EASTERN MUNICIPAL WATER DISTRICT
URBAN WATER 2020
MANAGEMENT PLAN
E A S T E R N M U N I C I P A L W A T E R D I S T R I C T Urban Water
Management Plan
J U L Y 1 , 2 0 2 1
Prepared by Water Systems Consulting, Inc.
Eastern Municipal Water District i Urban Water Management Plan
TABLE OF CONTENTS
List of Figures .................................................................................................................................................... vi List of Tables .................................................................................................................................................... vii Acronyms & Abbreviations ............................................................................................................................. ix Lay Description .................................................................................................................................................. 1 Water Supplies ....................................................................................................................................... 2 Water Demands ..................................................................................................................................... 2 Drought Risk ............................................................................................................................................. 2 Contingency Planning ............................................................................................................................. 2 Preparation and Outreach ................................................................................................................... 2
1. Introduction ................................................................................................................................................ 1-1
1.1 The California Water Code ........................................................................................................... 1-2
1.2 UWMP Organization ....................................................................................................................... 1-4
1.3 UWMPs in Relation to Other Efforts ............................................................................................. 1-5
1.4 UWMPs and Grant or Loan Eligibility .......................................................................................... 1-6
1.5 Demonstration of Consistency with the Delta Plan for Participants in Covered Actions ...... 1-6
2. Plan Preparation ...................................................................................................................................... 2-1
2.1 Plan Preparation ............................................................................................................................... 2-2
2.2 Basis for Preparing a Plan .............................................................................................................. 2-2
2.3 Coordination and Outreach ............................................................................................................ 2-3
2.3.1 Wholesale and Retail Coordination ..................................................................................... 2-3
2.3.2 Coordination with Other Agencies and the Community .................................................... 2-3
2.3.3 Notice to Cities and Counties................................................................................................. 2-4
3. System Description ................................................................................................................................... 3-1
3.1 General Description ......................................................................................................................... 3-2
3.2 Service Area Boundary Maps ........................................................................................................ 3-3
3.3 Service Area Climate ....................................................................................................................... 3-6
3.3.1 Climate Change ....................................................................................................................... 3-7
3.4 Service Area Population and Demographics............................................................................... 3-8
3.4.1 Service Area Population ......................................................................................................... 3-8
3.4.2 Other Social, Economic, and Demographic Factors ........................................................... 3-9
3.5 Land Uses within Service Area .................................................................................................... 3-10 Eastern Municipal Water District ii Urban Water Management Plan
3.6 Proposed Reorganization of Fallbrook Public Utility District and Rainbow Municipal Water District ........................................................................................................................................................ 3-10
4. Water Use Characterization ................................................................................................................. 4-1
4.1 Past, Current, and Projected Water Use by Sector ................................................................... 4-2
4.1.1 Codes and Other Considerations Used in Projections ....................................................... 4-3
4.2 Distribution System Water Losses .................................................................................................. 4-7
4.3 Water Use for Lower Income Households .................................................................................... 4-8
4.4 Climate Change Considerations ..................................................................................................... 4-9
5. SB X7-7 Baseline, Targets and 2020 Compliance ............................................................................ 5-1
5.1 SB X7-7 Forms and Tables .............................................................................................................. 5-2
5.1.1 Baselines and Target Summary ............................................................................................. 5-2
5.2 Methods for Calculating Population and Gross Water Use ..................................................... 5-3
5.2.1 Service Area Population ......................................................................................................... 5-3
5.2.2 Gross Water Use ..................................................................................................................... 5-3
5.3 2020 Compliance Daily Per-Capita Water Use (GPCD) ......................................................... 5-3
5.3.1 Adjustments Due to Factors Outside of a Supplier’s Control ........................................... 5-4
5.4 Regional Alliance .............................................................................................................................. 5-4
6. Water Supply Characterization ........................................................................................................... 6-1
6.1 Water Supply Analysis Overview ................................................................................................. 6-2
6.2 UWMP Water Supply Characterization ...................................................................................... 6-4
6.2.1 Purchased or Imported Water .............................................................................................. 6-4
6.2.2 Groundwater ............................................................................................................................ 6-5
6.2.3 Surface Water ...................................................................................................................... 6-11
6.2.4 Stormwater............................................................................................................................. 6-11
6.2.5 Wastewater and Recycled Water .................................................................................... 6-12
6.2.6 Desalinated Water Opportunities ..................................................................................... 6-20
6.2.7 Water Exchanges and Transfers ....................................................................................... 6-20
6.2.8 Future Water Projects .......................................................................................................... 6-21
6.2.9 Summary of Existing and Planned Sources of Water .................................................... 6-23
6.2.10 Climate Change Effects ..................................................................................................... 6-26
6.3 Energy Intensity .............................................................................................................................. 6-26
7. Water Service Reliability and Drought Risk Assessment .................................................................. 7-1
7.1 Water Service Reliability Assessment ........................................................................................... 7-2
7.1.1 Imported Water Reliability ................................................................................................... 7-2
7.1.2 Groundwater and Desalinated Groundwater Supply Reliability .................................. 7-3
7.1.3 Recycled Water Supply Reliability ...................................................................................... 7-3 Eastern Municipal Water District iii Urban Water Management Plan
7.1.4 Water Quality Constraints on Water Sources ................................................................... 7-3
7.1.5 Year Type Characterization .................................................................................................. 7-6
7.1.6 Water Service Reliability ....................................................................................................... 7-7
7.2 Drought Risk Assessment ............................................................................................................... 7-12
8. Water Shortage Contingency Plan ...................................................................................................... 8-1
8.1 WSCP Overview ............................................................................................................................... 8-2
9. Demand Management Measures .......................................................................................................... 9-1
9.1 Demand Management Measures for Wholesale Suppliers ...................................................... 9-2
9.1.1 Metering .................................................................................................................................... 9-2
9.1.2 Public Education and Outreach ............................................................................................. 9-3
9.1.3 Water Conservation Program Coordination and Staffing .............................................. 9-4
9.1.4 Other Demand Management Measures .............................................................................. 9-4
9.1.5 Asset Management .................................................................................................................. 9-4
9.1.6 Wholesale Supplier Assistance Programs ........................................................................... 9-3
9.2 Existing Demand Management Measures for Retail .................................................................. 9-4
9.2.1 Water Waste Prevention Ordinances ................................................................................. 9-4
9.2.2 Metering .................................................................................................................................... 9-4
9.2.3 Conservation Pricing ................................................................................................................ 9-5
9.2.4 Public Education and Outreach ............................................................................................. 9-7
9.2.5 Programs to Assess and Manage Distribution System Real ............................................. 9-9
9.2.6 Water Conservation Program Coordination and Staffing Support ............................ 9-10
9.2.7 Other Demand Management Measures ........................................................................... 9-10
9.3 Reporting Implementation ............................................................................................................ 9-13
9.3.1 Implementation Over the Past Five Years ........................................................................ 9-13
9.3.2 Implementation Achieve Water Use Targets ................................................................... 9-15
9.4 Water Use Objectives (Future Requirements) .......................................................................... 9-15
10. Plan Adoption, Submittal, and Implementation ....................................................................... 10-1
10.1 Inclusion of All 2020 Data ......................................................................................................... 10-2
10.2 Notice of Public Hearing ............................................................................................................ 10-2
10.2.1 Notice to Cities and Counties ........................................................................................... 10-2
10.2.2 Notice to the Public ............................................................................................................ 10-3
10.3 Public Hearing and Adoption ................................................................................................... 10-3
10.3.1 Public Hearing ..................................................................................................................... 10-4
10.3.2 Adoption .............................................................................................................................. 10-4
10.4 Plan Submittal .............................................................................................................................. 10-4
10.4.1 Submittal of the UWMP and Water Shortage Contingency Plan to DWR ............. 10-4 Eastern Municipal Water District iv Urban Water Management Plan
10.4.2 Electronic Data Submittal .................................................................................................. 10-4
10.4.3 Submittal of the UWMP to the California State Library ............................................ 10-4
10.4.4 Submittal of the UWMP to Cities and Counties ............................................................ 10-4
10.5 Public Availability ....................................................................................................................... 10-4
10.6 Notification to Public Utilities Commission ............................................................................... 10-5
10.7 Amending an Adopted UWMP or Water Shortage Contingency Plan ............................ 10-5
10.7.1 Amending a UWMP ........................................................................................................... 10-5
10.7.2 Amending a Water Shortage Contingency Plan .......................................................... 10-5
Eastern Municipal Water District v Urban Water Management Plan
APPENDICES
Appendix A DWR UWMP Checklist
Appendix B DWR Standard UWMP Tables
Appendix C DWR Standard SB X7-7 Tables
Appendix D AWWA Water Loss Audits
Appendix E West San Jacinto Groundwater Basin Management Plan Appendix F Hemet/San Jacinto Groundwater Management Area Water Management Plan Appendix G Stipulated Judgment
Appendix H Soboba Settlement Agreement
Appendix I Water Shortage Contingency Plan
Appendix J Notice of Public Hearing
Appendix K Resolution for Adoption of the 2020 UWMP
Appendix L Reduced Delta Reliance
Eastern Municipal Water District vi Urban Water Management Plan
LIST OF FIGURES
Figure 3-1. Water Agencies in and around EMWD Boundary 3-4 Figure 3-2. Cities in EMWD Boundary 3-5
Figure 3-3. Historical Climate Data at CIMIS Station 179 3-7 Figure 6-1. Agencies and Facilities 6-3
Figure 6-2. Groundwater Management Zones 6-8
Figure 6-3. EMWD Recycled Water System 6-15
Eastern Municipal Water District vii Urban Water Management Plan
LIST OF TABLES
Table 1-1. Related Planning Efforts 1-5
Table 2-1. DWR 2-1R Public Water Systems 2-2
Table 2-2. DWR 2-2 Plan Identification 2-2
Table 2-3. DWR 2-3 Agency Identification 2-2
Table 2-4. DWR 2-4 Water Supplier Information Exchange 2-3 Table 2-5. DWR 2-4W Water Supplier Information Exchange 2-3 Table 2-6. Outreach to Other Agencies and Entities 2-4
Table 3-1. EMWD Climate 3-6
Table 3-2. Historical Population within EMWD's Boundary - 1990 to 2010 3-8 Table 3-3. Projections of Population, Households, and Employment 3-8 Table 3-4. DWR 3-1R Current and Projected Population 3-9 Table 3-5. DWR 3-1W Current and Projected Population 3-9 Table 4-1. DWR 4-1R Actual Demands for Water 4-2
Table 4-2. DWR 4-1W Actual Demands for Water 4-3
Table 4-3. DWR 4-2R Projected Demands for Water 4-5
Table 4-4. DWR 4-2W Projected Demands for Water 4-5
Table 4-5. DWR 4-3R Total Gross Water Use 4-6
Table 4-6. DWR 4-3W Total Gross Water Use 4-6
Table 4-7. DWR 4-4R 12 Month Water Loss Audit Reporting 4-7 Table 4-8. Low Income Housing Unit Projection 4-8
Table 4-9. DWR 4-5R Inclusion in Water Use Projections 4-8 Table 5-1. DWR 5-1R Baselines and Targets Summary 5-2
Table 5-2. DWR 5-2R 2020 Compliance 5-3
Table 6-1. Groundwater Management Zones 6-7
Table 6-2. DWR 6-1R Groundwater Volume Pumped 6-11
Table 6-3. RWRF Treatment Capacity 6-12
Table 6-4. DWR 6-2R Wastewater Collected within Service Area in 2020 6-13 Table 6-5. DWR 6-3R Wastewater Treatment and Discharge within Service Area in 2020 6-13 Table 6-6. Recycled Water Coordination Agencies 6-14
Table 6-7. DWR 6-4R Recycled Water within Service Area in 2020 6-17 Table 6-8. DWR 6-4W Recycled Water Within Service Area in 2020 6-17 Table 6-9. DWR 6-5R 2015 Recycled Water Use Projection Compared to 2020 Actual 6-18 Table 6-10. DWR 6-5W 2015 Recycled Water Use Projection Compared to 2020 Actual 6-18 Table 6-11. DWR 6-6R Methods to Expand Future Recycled Water Use 6-19 Table 6-12. DWR 6-7R Expected Future Water Supply Projects or Programs 6-22 Eastern Municipal Water District viii Urban Water Management Plan Table 6-13. DWR 6-8R Actual Water Supplies 6-24
Table 6-14. DWR 6-8W Actual Water Supplies 6-24
Table 6-15. DWR 6-9R Projected Water Supplies 6-25
Table 6-16. DWR 6-9R Projected Water Supplies 6-25
Table 6-17. DWR Table O-1-1B Energy Intensity of Water Operations 6-27 Table 6-18. DWR Table O-2 Energy Intensity of Wastewater and Recycled Water Operations 6-28 Table 7-1. DWR 7-1R Basis for Water Year Data (Reliability Assessment) 7-6 Table 7-2. DWR 7-1W Basis for Water Year Data (Reliability Assessment) 7-7 Table 7-3. DWR 7-2R Normal Year Supply and Demand Comparison 7-8 Table 7-4. DWR 7-2W Normal Year Supply and Demand Comparison 7-8 Table 7-5. DWR 7-3R Single Dry Year Supply and Demand Comparison 7-8 Table 7-6. DWR 7-3W Single Dry Year Supply and Demand Comparison 7-9 Table 7-7. DWR 7-4R Multiple Dry Years Supply and Demand Comparison 7-10 Table 7-8. DWR 7-4W Multiple Dry Years Supply and Demand Comparison 7-11 Table 7-9. DWR 7-5 Five-Year Drought Risk Assessment Tables to Address Water Code Section 10635(b) 7-13
Table 9-1. Meter Testing and Replacement Frequency 9-5
Table 9-2. DMM Implementation 9-14
Table 10-1. DWR 10-1R Notification to Cities and Counties 10-3 Table 10-2. DWR 10-1W Notification to Cities and Counties 10-3
Eastern Municipal Water District ix Urban Water Management Plan
ACRONYMS & ABBREVIATIONS
C Degrees Celsius
F Degrees Fahrenheit
AB Assembly Bill
AF Acre Foot
AFY Acre Feet per Year
AHHG Area of Historic High Groundwater
AMR Automatic Meter Reader
APA Administrative Procedures Act
AWWA American Water Works Association
BMP Best Management Practice
CALWARN California Water/Wastewater Agency Response Network CAT Climate Action Team
CCF Hundred Cubic Feet
CCR California Code of Regulations
CEQA California Environmental Quality Act
CFS Cubic Feet per Second
CII Commercial, Industrial, and Institutional
CIMIS California Irrigation Management Irrigation System CUWCC California Urban Water Conservation Council
DCR DWR SWP Delivery Capacity Report
DDW SWRCB Division of Drinking Water
DFW California Department of Fish and Wildlife
DIP Ductile Iron Pipe
DMM Demand Management Measure
DWR California Department of Water Resources
EIR Environmental Impact Report
EMWD Eastern Municipal Water District
EPA United States Environmental Protection Agency
ERNIE Emergency Response Network of the Inland Empire
ESA Endangered Species Act
ET Evapotranspiration
Eastern Municipal Water District x Urban Water Management Plan ETo Reference Evapotranspiration
GAC Granulated Activated Carbon
GIS Geographic Information System
GPCD Gallons per Capita per Day
GPM Gallons per Minute
HECW High Efficiency Clothes Washer
HET High Efficiency Toilet
IX Ion Exchange
KAF Thousand Acre Feet
KAFY Thousand Acre Feet per Year
LAFCO Local Agency Formation Commission
MAF Million Acre-Feet
MCL Maximum Contaminant Level
Metropolitan Metropolitan Water District of Southern California MF Multi-family
MG Million Gallons
MGD Million Gallons per Day
MOU Memorandum of Understanding
MSL Mean Sea Level
MTBE Methyl Tertiary Butyl Ether
NMFS National Marine Fisheries Service
NOAA National Oceanic and Atmospheric Administration
NPDES National Pollutant Discharge Elimination System
PCE Perchloroethylene
PPCP Pharmaceuticals and Personal Care Products
PVC Polyvinyl Chloride
QWEZ Qualified Water Efficient Landscaper
RIX Rapid Infiltration and Extraction
RPA Reasonable and Prudent Alternative
RUWMP Regional Urban Water Management Plan
RWQCB Regional Water Quality Control Board
SBX7-7 Senate Bill 7 of Special Extended Session 7
SF Single Family
SOC Synthetic Organic Chemicals
SOI Sphere of Influence
SWRCB State Water Resources Control Board
Eastern Municipal Water District xi Urban Water Management Plan TDS Total Dissolved Solids
TCE Trichloroethylene
ULFT Ultra-Low Flush Toilet
UV Ultraviolet
UWMP Urban Water Management Plan
UWMP Act Urban Water Management Planning Act
VOC Volatile Organic Compound
WBIC Weather Based Irrigation Controller
WSCP Water Shortage Contingency Plan
WFF Water Filtration Facility
WSS Water Sense Specification
WTP Water Treatment Plant
WWTP Wastewater Treatment Plant
E-1
Lay Description
This Urban Water Management Plan (UWMP) presents a discussion of how Eastern Municipal Water District (EMWD) manages its water supplies to meet customer demands.
EMWD is required to prepare an UWMP and submit it to the California Department of Water Resources (DWR) every five years. DWR prepares guidance materials for water suppliers to help them prepare UWMPs that meet requirements of the
California Water Code (CWC). EMWD has used these
guidance materials to prepare its 2020 UWMP.
IN THIS SECTION
Summary of
fundamental
determinations of the
UWMP
Lay Description
Eastern Municipal Water District E-2 Urban Water Management Plan Water Supplies
EMWD provides potable water, recycled water, and wastewater services to an area of approximately 555 square miles in western Riverside County. The service area includes seven incorporated cities in addition to unincorporated areas of Riverside County. EMWD has a diverse portfolio of local and imported supplies. Local supplies include recycled water, potable groundwater, and desalinated groundwater. EMWD is a leader in recycled water and generally uses 100 percent of its recycled water to irrigate landscape and agricultural fields and provide water for industrial customers. EMWD has groundwater wells in two groundwater management areas and works with other stakeholders to protect the quality and integrity of the groundwater basins. EMWD receives imported water from the Metropolitan Water District of Southern California (Metropolitan). About half of the water used in EMWD’s service area is imported by Metropolitan. Through the implementation of local supply projects and increased water use efficiency, EMWD has been able to maintain a balance of local and imported water even as new connections have been added.
Water Demands
EMWD is both a retail supplier, selling to residential and commercial customers, and a wholesale supplier, selling to other water agencies. EMWD has a comprehensive conservation program to encourage customers to use water wisely and efficiently. Through the successful implementation of these programs, EMWD’s average water use per person has dropped significantly since 2010. Looking forward, EMWD expects demands to increase as new residential and commercial development continues in the service area.
Drought Risk
EMWD’s supply portfolio has a high degree of reliability. The local groundwater basins are managed to protect them from overdraft, and EMWD participates in programs to bank water in the groundwater basins in wet years so that it can be used in dry years. EMWD’s imported water is provided by Metropolitan, which has made extensive investments in programs to increase the reliability of its supply.
In its 2020 UWMP, Metropolitan has shown the ability to continue to meet demands through 2045, even during an extended drought. EMWD would benefit from Metropolitan’s storage and supply programs and also expects that it can meet demands through 2045 during normal and dry conditions.
Contingency Planning
Even with highly reliable supplies, events such as statewide water use restrictions or a catastrophic natural disaster (such as an earthquake) that disrupts imported water supplies may require EMWD to temporarily reduce water demands. EMWD’s Water Shortage Contingency Plan (WSCP) defines the actions that EMWD could take to conserve water during a shortage. The WSCP describes how EMWD would communicate these requirements to customers, and it describes how the restrictions on use (for example, limiting watering to certain days of the week) would be enforced.
Preparation and Outreach
EMWD coordinated with Metropolitan and EMWD’s wholesale customers on the preparation of the 2020 UWMPs to present a clear and consistent picture of water supply management in the region.
EMWD held a public hearing to receive feedback on the UWMP and the WSCP and used that feedback to help develop the plans. If a shortage occurs, EMWD will continue to monitor how the WSCP works and considering making changes where needed.
1-1
Introduction
The Urban Water Management Planning Act (Act), adopted in 1983, requires water suppliers in California to conduct long-term water resources planning.
Prior to adoption of the Act, water agencies were more vulnerable to supply disruptions during periods of drought or supply shortages.
The Act sought to reduce susceptibility to supply shortages by requiring a minimum level of long-term resource assessment and planning by water suppliers. The planning requirements
established by the Act and subsequent legislation encourage regional coordination and focus on water use efficiency as described in the sections below.
This 2020 Urban Water Management Plan (UWMP) addresses
the water supply sources, projected demands, and supply reliability for Eastern Municipal Water District (EMWD).
IN THIS SECTION
California Water Code
UWMP Organization
Related Efforts
Introduction Section 1
Eastern Municipal Water District 1-2 Urban Water Management Plan
1.1 The California Water Code
California Water Code (CWC) Section 10620 (a) of the Urban Water Management Act, states, “Every urban water supplier shall prepare and adopt an urban water management plan in the manner set forth in Article 3 (commencing with Section 10640)”. These plans are to be updated every five years and submitted to the California Department of Water Resources (DWR). Requirements for the UWMP include:
Assessment of current and projected water supplies
Evaluation of demand and customer types
Evaluation of the reliability of water supplies
Description of conservation measures implemented by the urban water supplier Response plan, in the event of a water shortage
Comparison of demand and supply projections
In November of 2009, the California Legislature passed Senate Bill (SB) 7 as part of the Seventh Extraordinary Session, referred to as SBX7-7 or the Water Conservation Act of 2009. SBX7-7 set the goal of achieving a 20 percent reduction in urban per capita water use statewide by 2020. Retail water agencies were required to set targets and track progress toward decreasing daily per capita urban water use in their service areas, in order to assist the State in meeting its 20 percent reduction goal by 2020. This law required that every UWMP include:
Baseline per capita water use
Urban water use target for 2020
Compliance daily per capita water use
This 2020 UWMP has been prepared to comply with the Urban Water Management Planning Act and SBX7-7. In addition to meeting the requirements of the Act, this report will be used to support water supply assessments and written verifications of water supply required by SB 610 and SB 221 of 2001.
These bills require that water supply information be provided to counties and cities for projects of a certain size, prior to discretionary project approval. Both bills allow a UWMP to be used as a source document to fulfill these legislative requirements.
Since EMWD’s 2015 UWMP was completed and submitted to DWR, the Legislature has passed additional requirements that need to be incorporated in 2020 UWMPs. Major new requirements include:
Water Reliability Assessment for five consecutive dry years, more than the three consecutive dry years previously required.
Drought Risk Assessment to assess water supply reliability over a five-year period from 2021 to 2025 under a reasonable prediction for five consecutive dry years. Seismic risk assessment and mitigation plan for a supplier’s infrastructure. Water Shortage Contingency Plan with prescribed elements. Coordination on groundwater supply planning with plans being completed to address the Sustainable Groundwater Management Act (SGMA).
Lay Description to describe the fundamental determinations of the UWMP in lay-person’s language.
Introduction Section 1
Eastern Municipal Water District 1-3 Urban Water Management Plan This 2020 UWMP was developed to incorporate these new requirements, under the guidance of DWR’s 2020 UWMPs Guidebook for Urban Water Suppliers. A checklist to document compliance of this UWMP with the Act and the CWC is provided in Appendix A.
This UWMP includes the required DWR standardized tables within relevant chapters, and they are compiled in Appendix B. Within the UWMP chapters, tables are numbered sequentially, and the standard DWR table number is also provided where applicable.
This UWMP also includes all required SB X7-7 tables in Appendix C to verify compliance with the SB X7-7 targets.
Introduction Section 1
Eastern Municipal Water District 1-4 Urban Water Management Plan
1.2 UWMP Organization
This report is structured with the layout recommended by the DWR Guidebook. The chapters include:
Chapter 1 – Introduction and Lay Description
General legal requirements for UWMPs
Lay description of fundamental
determinations
Chapter 2 – Plan Preparation
Plan preparation and agency identification
Agency coordination and outreach
Chapter 3 – System Description
General description of EMWD’s retail and
wholesale service areas
Climate characteristics of EMWD’s service
area
Current and projected population and
demographic factors
Chapter 4 – Customer Water Use
Overview of past, current, and projected
water use
System water losses
Climate change impacts on water use
Chapter 5 – Baselines and Targets
Information on the Water Conservation Act of
2009
Water use targets for 2020 and confirmation
of compliance
Chapter 6 – System Supplies
Information about current and projected
supplies
Background on imported water supply,
including the Metropolitan Water District of
Southern California (Metropolitan)
Description of groundwater basin
management and supplies
Description of EMWD’s recycled water
system and the beneficial uses of recycled
water
Description of planned water projects
Climate change impacts to supplies
Chapter 7 – Water Supply Reliability
Assessment
Overview of the reliability of each of EMWD’s
supplies
Water quality of supplies
Projections for water supply and water
demands under normal, single dry, and
multiple dry year hydrologic conditions
Regional supply reliability
Five-Year Drought Risk Assessment (DRA)
Chapter 8 – Water Shortage Contingency
Planning
EMWD’s annual procedure for performing an
assessment of supplies and demands to
determine the potential need for implementing
the WSCP in the coming year.
Overview of EMWD’s water shortage stages
and associated response actions for each
stage
Potential fiscal impacts of implementing
demand reduction actions
The contents of this chapter were placed into
a stand-alone Water Shortage Contingency
Plan (WSCP) that can be adopted and
amended separately from the UWMP.
Chapter 9 – Demand Management Measures
Summary of EMWD’s retail and wholesale
demand management measures
Chapter 10 – Plan Adoption, Submittal, and
Implementation
Overview of the UWMP adoption process
Implementation of the Plan
Introduction Section 1
Eastern Municipal Water District 1-5 Urban Water Management Plan
1.3 UWMPs in Relation to Other Efforts
UWMPs allow for integration of information from other planning documents, as well as regional planning efforts. EMWD has recently completed a number of planning documents that were used to inform estimates of water supplies and water use projections for the 2020 UWMP update. Additionally, regional planning efforts conducted by Metropolitan were used to assess the EMWD imported water supply reliability. A summary of related planning efforts is presented in Table 1-1.
Table 1-1. Related Planning Efforts
DOCUMENT DESCRIPTION
Water Master Plan, EMWD 2016 This document analyzes EMWD’s facilities needs to meet current and future customer demands.
Recycled Water Strategic and Master
Plan, EMWD 2016
The document analyzes EMWD’s recycled water opportunities and contains recycled water projections through the year 2045, including descriptions of planned recycled water projects and facilities.
Wastewater Collection Master Plan,
EMWD 2016
This document analyzes EMWD’s facilities needs to collect existing and future wastewater.
Regional Water Reclamation Facilities
Master Plan
This document analyzes EMWD’s reclamation facility needs for treating existing and future wastewater.
Metropolitan Water District Integrated
Resources Plan
The document analyzes multiple supply and demand scenarios and describes Metropolitan’s plan for providing adequate and reliable supplies to member agencies under the different scenarios. The detailed analyses of further local and imported water supplies; economic growth, demographics, and water demands; and changing hydrology are incorporated into Metropolitan’s UWMP.
Metropolitan Water District Urban Water
Management Plan
The document describes Metropolitan’s demand and supply reliability and is used as the basis of EMWD’s imported water supply reliability.
Introduction Section 1
Eastern Municipal Water District 1-6 Urban Water Management Plan
1.4 UWMPs and Grant or Loan Eligibility
Water suppliers are required to have a current UWMP on file with DWR in order to be eligible for any water grant or loan administered by DWR. DWR must also determine that the supplier’s UWMP has addressed the requirements of the Water Code.
EMWD’s 2015 UWMP was determined by DWR to address the requirements of the Water Code. This 2020 UWMP will be submitted to DWR for review and a similar determination.
1.5 Demonstration of Consistency with the Delta Plan for Participants in Covered Actions
EMWD receives imported water supplies from the State Water Project (SWP) through Metropolitan.
Agencies that receive water from the SWP are required to demonstrate consistency with the Delta Plan’s policy to reduce reliance on the Sacramento-San Joaquin Delta (Delta).
EMWD has worked with Metropolitan to demonstrate this consistency. The documentation is included in Appendix L.
2-1
Plan Preparation
The Urban Water Management Planning Act (UWMP Act) requires every urban water supplier that provides water for municipal purposes to more than 3,000 connections or supplies more than 3,000 acre-feet of water annually to adopt and submit an Urban Water Management Plan (UWMP) to the California Department of Water Resources (DWR) every five years.
The main purposes of developing and updating a UWMP are to forecast water demands and supplies under normal, single-dry, and multiple-dry year conditions; assess supply reliability; and describe methods of reducing demands under potential water shortages.
IN THIS SECTION
Coordination and
Outreach
Cities and Counties
Served by EMWD
Basis for Plan
Plan Preparation Section 2
Eastern Municipal Water District 2-2 Urban Water Management Plan
2.1 Plan Preparation
This UWMP satisfies the requirements of the UWMP Act and its amendments and provides an overview of Eastern Municipal Water District’s (EMWD)’s long-term supplies and demands. The 2020 UWMP also demonstrates EMWD’s compliance with the water use efficiency targets set by the Water Conservation Act of 2009 (SB X7-7).
EMWD operates a Public Water System that qualifies as an “Urban Water Supplier” under the CWC Section 10617, serving more than 3,000 customers and more than 3,000 acre-feet per year (AFY). The qualifying information about EMWD is shown in Table 2-1. The number of connections and volume of water supplied in Table 2-1 reflect EMWD’s potable water system only and do not include recycled water users or water supplied on a wholesale basis.
Table 2-1. DWR 2-1R Public Water Systems
PUBLIC WATER SYSTEM
NUMBER
PUBLIC WATER
SYSTEM NAME
NUMBER OF MUNICIPAL
CONNECTIONS 2020
VOLUME OF WATER
SUPPLIED 2020
CA3310009 Eastern Municipal Water District 155,561 84,673
2.2 Basis for Preparing a Plan
This plan is an individual plan to meet EMWD’s reporting requirements as a wholesale supplier and a retail supplier. Although EMWD has coordinated with appropriate retail agencies and constituents, EMWD is not participating in a Regional UWMP or a Regional Alliance. The plan identification details are provided in Table 2-2.
Table 2-2. DWR 2-2 Plan Identification
TYPE OF PLAN MEMBER OF RUWMP MEMBER OF REGIONAL ALLIANCE Individual UWMP No No
EMWD is both a retail and wholesale Urban Water Supplier and has selected to report UWMP data in calendar years and in units of acre-feet (AF). The agency identification details are provided in Table 2-3.
Table 2-3. DWR 2-3 Agency Identification
TYPE OF SUPPLIER YEAR TYPE UNIT TYPE
Wholesale and Retail Calendar Years Acre Feet (AF)
Plan Preparation Section 2
Eastern Municipal Water District 2-3 Urban Water Management Plan
2.3 Coordination and Outreach
EMWD has coordinated with other agencies to prepare consistent evaluations of projected water demands and supplies. These coordination efforts are described in the following sections.
2.3.1 Wholesale and Retail Coordination
EMWD is both a retail and wholesale agency. As a retail agency, EMWD is required to provide its wholesaler, Metropolitan, with projected water demand in five-year increments for 20 years. As a wholesale agency, EMWD is required to provide information to its customer urban water suppliers identifying and quantifying water supplies available to those agencies in five-year increments.
The agencies affected are shown in Table 2-4 and Table 2-5.
Table 2-4. DWR 2-4 Water Supplier Information Exchange
WHOLESALE WATER SUPPLIER NAME
Metropolitan Water District of Southern California
Table 2-5. DWR 2-4W Water Supplier Information Exchange
WHOLESALE WATER SUPPLIER NAME
City of Hemet
City of Perris
City of San Jacinto
Lake Hemet Municipal Water District
Nuevo Water Company
Rancho California Water District
Western Municipal Water District
2.3.2 Coordination with Other Agencies and the Community Article 3, Section 10642 of the UWMP Act requires each urban water supplier to encourage the active involvement of diverse social, cultural, and economic elements of the population within the service area. EMWD has encouraged the participation of sub agencies, cities, the County of Riverside, and other public groups. Public participation and coordination efforts included outreach to the entities shown in Table 2-6.
Plan Preparation Section 2
Eastern Municipal Water District 2-4 Urban Water Management Plan Table 2-6. Outreach to Other Agencies and Entities
ENTITY ROLE
Metropolitan Water District of Southern California Wholesaler supplier to EMWD City of Beaumont EMWD’s retail service area overlaps portion of City City of Canyon Lake EMWD’s retail service area overlaps portion of City City of Hemet EMWD is wholesale supplier to agency
City of Menifee EMWD’s retail service area overlaps portion of City City of Moreno Valley EMWD’s retail service area overlaps portion of City City of Murrieta EMWD’s retail service area overlaps portion of City City of Perris EMWD is wholesale supplier to agency
City of Riverside EMWD’s retail service area overlaps portion of City City of San Jacinto EMWD is wholesale supplier to agency City of Temecula EMWD’s retail service area overlaps portion of City Elsinore Valley Municipal Water District EMWD sells recycled water to agency Lake Hemet Municipal Water District EMWD is wholesale supplier to agency Nuevo Water Company EMWD is wholesale supplier to agency Rancho California Water District EMWD is wholesale supplier to agency Western Municipal Water District EMWD is wholesale supplier to agency Fallbrook Public Utility District Agency is a potential future wholesale customer of EMWD (pending the outcome of the reorganization proposal filed by Fallbrook PUD which is being processed by San Diego County Local Agency Formation Commission)
Rainbow Municipal Water District Agency is a potential future wholesale customer of EMWD (pending the outcome of the reorganization proposal filed by Rainbow MWD which is being processed by San Diego County Local Agency Formation Commission)
County of Riverside
Hemet – San Jacinto Watermaster Oversee administration of Stipulated Judgement in the Management Area (Canyon Subbasin, the San Jacinto Upper Pressure Subbasin downstream to Bridge Street and the Hemet Subbasin)
Santa Ana Watershed Protection Authority Integrated Regional Water Management Plan Pechanga Band of Luiseño Indians EMWD sells recycled water to Tribal Government Soboba Band of Luiseño Indians Party to Soboba Settlement Agreement California Department of Water Resources Administers Urban Water Management Planning Act General Public
2.3.3 Notice to Cities and Counties
EMWD provided notice to the cities and counties within its service area that the UWMP was being updated. These notices are included in Appendix J and were provided more than 60 days prior to the public hearing held to consider the draft plan.
3-1
System Description
EMWD is a public water agency formed in 1950 by popular vote. In 1951, it was annexed into Metropolitan and gained access to a supply of imported water from the Colorado River Aqueduct (CRA). Today, EMWD remains one of Metropolitan’s 26 member agencies and receives water from Northern California through the State Water Project (SWP) in addition to deliveries through the CRA.
EMWD’s initial mission was to deliver imported water to supplement local groundwater for a small, mostly agricultural, community. Over time, EMWD’s list of services has evolved to include groundwater production, desalination, water filtration, wastewater collection and treatment, and regional water recycling.
IN THIS SECTION
Service Area
Land Uses
System Description Section 3
Eastern Municipal Water District 3-2 Urban Water Management Plan
3.1 General Description
EMWD provides both retail and wholesale water service covering a total population of over 800,000.
EMWD’s mission is, “To deliver value to our diverse customers and the communities we serve by providing safe, reliable, economical and environmentally sustainable water, wastewater and recycled water services.” A five-member Board of Directors governs EMWD. Each Director serves an area of equivalent population size within EMWD’s boundaries and is elected to office every four years. As a member agency of Metropolitan, EMWD also has a member appointed to the Metropolitan Board.
EMWD provides potable water, recycled water, and wastewater services to an area of approximately 555 square miles in western Riverside County. EMWD is both a retail and wholesale agency.
Approximately half of EMWD’s retail demands are supplied using local sources, while the balance is served by imported water purchased from Metropolitan. EMWD also purchases imported water from Metropolitan to supplement the local supplies of its wholesale customers. Imported water is delivered to EMWD either as potable water treated by Metropolitan, or as raw water that EMWD can either treat at one of its two local filtration plants or deliver as raw water for non-potable uses.
EMWD’s local supplies include groundwater, desalinated groundwater, and recycled water.
Groundwater is pumped from the Hemet/San Jacinto and West San Jacinto areas of the San Jacinto Groundwater Basin. Groundwater in portions of the West San Jacinto Basin is high in salinity and requires desalination for potable use. EMWD owns and operates two desalination plants that convert brackish groundwater from the West San Jacinto Basin into potable water. EMWD also owns, operates, and maintains its own recycled water system that consists of four Regional Water Reclamation Facilities and several storage ponds spread throughout EMWD’s service area that are all connected through the recycled water system. EMWD’s goal is to beneficially use 100 percent of the recycled water it produces.
EMWD is located in western Riverside County, approximately 75 miles east of Los Angeles. The 555- square mile service area includes seven incorporated cities in addition to unincorporated areas in the County of Riverside. The cities and unincorporated areas within EMWD’s boundary include:
City of Beaumont
City of Canyon Lake
City of Hemet
City of Menifee
City of Moreno Valley
City of Murrieta
City of Perris
City of Riverside
City of San Jacinto
City of Temecula
Homeland
Lakeview
Nuevo
Quail Valley
Romoland
Valle Vista
Winchester
In most of the listed areas, EMWD provides both water and wastewater service. However, in some places EMWD provides only water or wastewater service or provides wholesale water to a purveyor agency. EMWD is a wholesale potable provider to the following agencies:
City of Hemet Water Department
City of Perris Water System
City of San Jacinto Water Department
Lake Hemet Municipal Water District
(LHMWD)
Murrieta Division of WMWD
Nuevo Water Company
Rancho California Water District (RCWD)
System Description Section 3
Eastern Municipal Water District 3-3 Urban Water Management Plan Additionally, EMWD sells recycled water to RCWD and Elsinore Valley Municipal Water District (EVMWD) and has an emergency connection with the City of Perris’ North Perris Water System.
Several of these agencies are preparing their own UWMP. EMWD has discussed and reviewed the supplemental water demands required by each agency with representatives of those agencies. The demand and water supply requirements are incorporated in this UWMP.
EMWD has four sources of water supply: imported water from Metropolitan, local groundwater, desalinated groundwater, and recycled water. Delivery points for each source of water are located throughout the EMWD service area.
Potable imported water is treated and delivered to EMWD directly from Metropolitan’s two large filtration plants. The Henry J. Mills (Mills) Water Treatment Plant treats water from Northern California and provides it to EMWD through two connection points located in the northeast portion of EMWD’s service area. The Robert F. Skinner (Skinner) Water Treatment Plant treats a blend of Colorado River water and water from Northern California and provides it to EMWD through a connection point in the southwest portion of EMWD’s service area.
EMWD owns and operates two microfiltration plants that filter raw imported water delivered through Metropolitan, removing particulate contaminants to achieve potable water standards. The two treatment plants, the Perris Water Filtration Plant and the Hemet Water Filtration Plant, are located in Perris and Hemet, respectively. Raw water from Metropolitan is also used for groundwater replenishment in the eastern part of EMWD. EMWD and others can extract this water at a later date for beneficial uses. Untreated water from Metropolitan used for agricultural purposes is delivered in the northeast for use by EMWD retail and wholesale accounts and in the south for RCWD agricultural accounts.
EMWD produces potable and brackish groundwater from the San Jacinto Groundwater Basin that underlies the EMWD service area. EMWD’s groundwater wells pump primarily from the eastern portion of EMWD, with the largest amount of production taking place around the cities of Hemet and San Jacinto. EMWD owns and operates two desalination plants in Sun City, the Menifee Desalter and the Perris I Desalter, which treat brackish groundwater through reverse osmosis to achieve potable water standards.
In addition to the potable water system, EMWD maintains a regional recycled water system that provides tertiary-treated recycled water to customers for agricultural, landscape irrigation, environmental, and industrial use. EMWD’s recycled water system consists of four regional water reclamation facilities (RWRFs) that treat municipal sewage and produce water for recycling. The four RWRFs, the San Jacinto Valley RWRF, the Moreno Valley RWRF, the Temecula Valley RWRF, and the Perris Valley RWRF, are spread throughout EMWD’s service area. A network of pipelines connects the four RWRFs, as well as several distribution storage ponds, to manage the delivery of recycled water.
EMWD’s water supplies and facilities are described in more detail in Chapter 6.
3.2 Service Area Boundary Maps
EMWD’s service area boundary and the intersecting and adjacent water agencies within that boundary are shown in Figure 3-1. The cities in EMWD’s service area are shown in Figure 3-2.
System Description Section 3
Eastern Municipal Water District 3-4 Urban Water Management Plan Figure 3-1. Water Agencies in and around EMWD Boundary
System Description Section 3
Eastern Municipal Water District 3-5 Urban Water Management Plan Figure 3-2. Cities in EMWD Boundary
System Description Section 3
Eastern Municipal Water District 3-6 Urban Water Management Plan
3.3 Service Area Climate
EMWD has a semi-arid climate characterized by hot, dry summers and cooler winters. The region experiences a wide variation in rainfall and periodic drought. The average total rainfall in the service area is approximately 7.6 inches, occurring mostly December through March. A summary of historical average climatological data is presented in Table 3-5, and the values are plotted in Figure 3-3.
Table 3-1. EMWD Climate
STANDARD MONTHLY
AVERAGE ETO (INCHES)
AVERAGE RAINFALL
(INCHES)
AVERAGE MAXIMUM
TEMPERATURE
(FAHRENHEIT)
AVERAGE MINIMUM
TEMPERATURE
(FAHRENHEIT)
JANUARY 2.3 1.4 67 35
FEBRUARY 2.8 2.0 62 33
MARCH 4.3 2.4 65 37
APRIL 5.5 1.3 70 41
MAY 6.7 0.3 72 46
JUNE 7.5 0.0 81 51
JULY 8.0 0.0 92 60
AUGUST 7.8 0.0 94 60
SEPTEMBER 6.2 0.0 91 57
OCTOBER 4.5 0.2 82 47
NOVEMBER 2.8 1.1 74 40
DECEMBER 2.1 1.8 66 35
TOTAL / AVERAGE 60.5 10.6 76 45
Data from California Irrigation Management Information System (CIMIS) Station Winchester 179 Data from 2002 through 2020
System Description Section 3
Eastern Municipal Water District 3-7 Urban Water Management Plan Figure 3-3. Historical Climate Data at CIMIS Station 179
3.3.1 Climate Change
EMWD has considered the potential impacts of climate change on its demands (described in Chapter 4) and its supplies (described in Chapter 6).
1.4 2.0
2.4 1.3
0.3 0.0 0.0 0.0 0.0
0.2 1.1
1.8 2.3
2.8 4.3
5.5 6.7
7.5 8.0
7.8 6.2
4.5 2.8
2.1 0
10 20
30 40
50 60
70 80
90 100
0.0 1.0
2.0 3.0
4.0 5.0
6.0 7.0
8.0 9.0 Temperature (F) Precipitation and ETo (in)
Precipitation (in) ETo (in) Maximum Air Temperature (F) Minimum Air Temperature (F) System Description Section 3
Eastern Municipal Water District 3-8 Urban Water Management Plan
3.4 Service Area Population and Demographics
EMWD’s service area has experienced population growth driven by cycles of economic expansion and conversion of agricultural land to urban development.
3.4.1 Service Area Population
EMWD used the DWR Population Tool to estimate the population in its service area for the census years of 1990, 2000, and 2010. The historic growth in population is shown in Table 3-2.
Table 3-2. Historical Population within EMWD's Boundary - 1990 to 2010 WATER SERVICE AREA 1990 2000 2010 2015
EMWD Retail Service Area 240,293 297,111 519,880 546,146 EMWD Wholesale Service Area 102,362 167,104 200,789 215,075 TOTAL 342,655 464,215 720,669 761,221
Service area population was estimated using Census data and DWR’s Population Tool.
The DWR Population Tool was used to estimate the 2020 population based on the census data for 2010 and the change in the number of connections from 2010 to 2020.
For future population projections, EMWD evaluated projections prepared by the Southern California Association of Governments (SCAG). SCAG recently completed an updated regional growth forecast known as 2020 Connect SoCal. SCAG generated estimates of population, households, and employment in each Traffic Analysis Zone (TAZ). The results are summarized in Table 3-3.
Table 3-3. Projections of Population, Households, and Employment 2025 2030 2035 2040 2045
POPULATION
EMWD Boundary 921,200 983,300 1,045,300 1,088,300 1,131,300 EMWD Water Service Area 649,700 695,500 741,300 774,300 807,200 EMWD Wholesale Service Area 271,500 287,800 304,000 314,000 324,100
HOUSEHOLDS
EMWD Boundary 290,800 317,000 343,200 360,800 378,400
EMWD Water Service Area 199,600 218,700 237,700 251,000 264,200 EMWD Wholesale Service Area 91,200 98,300 105,500 109,800 114,200
EMPLOYMENT
EMWD Boundary 231,400 250,100 268,800 282,500 296,300
EMWD Water Service Area 123,600 132,300 141,000 149,000 157,000 EMWD Wholesale Service Area 107,800 117,800 127,800 133,500 139,300 Estimates from SCAG forecast in 2020 Connect SoCal
The current and projected future population in the retail service area is shown in Table 3-4, and the estimates for the wholesale service area are shown in Table 3-5.
System Description Section 3
Eastern Municipal Water District 3-9 Urban Water Management Plan Table 3-4. DWR 3-1R Current and Projected Population
POPULATION SERVED 2020 2025 2030 2035 2040 2045
Retail 603,950 649,700 695,500 741,300 774,300 807,200
1) Retail population for 2020 was estimated using the DWR Population Tool and persons per connection. 2) Retail population projections for 2025-2045 were estimated using population projections prepared by the Southern California Association of Governments for 2020 Connect SoCal..
Table 3-5. DWR 3-1W Current and Projected Population
POPULATION SERVED 2020 2025 2030 2035 2040 2045
Wholesale 255,210 271,500 287,800 304,000 314,000 324,100 1) Wholesale population for 2020 was estimated using the data from the Southern California Association of Governments. 2) Wholesale population projections for 2025-2045 were estimated using population projections prepared by the Southern California Association of Governments for 2020 Connect SoCal.
3.4.2 Other Social, Economic, and Demographic Factors
As the population within EMWD’s service area continues to grow, the characteristics of the service area are continually changing. Tract homes, commercial centers and new industrial warehouses are replacing areas of agriculture and vacant land.
EMWD has a history of development cycles with wide variations in the rate of growth. From the mid1980’s to 1990’s, population growth in EMWD routinely exceeded 10 percent per year. In the early 1990’s, growth slowed during an economic recession. During the late 1990’s, growth began to steadily increase, and the first five years of the 2000’s again brought accelerated population growth to the area.
Growth within EMWD’s service area reached its peak rate in 2005, but then there was a major decline in housing development and growth slowed again. Starting in 2006 EMWD saw a sharp decline in the number of new connections added, reaching a low point in 2010. Since 2010, new connections have slowly been increasing; but they remain well below the peak levels of new development seen in the early 2000’s.
The cycle of booming growth followed by slower growth makes new development in EMWD’s service area difficult to predict. On average, 6,700 new equivalent dwelling units (EDUs) per year were added to EMWD’s service area from 2000 through 2015; but over that 15-year time period there were two years with more than 15,000 EDUs added and three years with less than 2,000 EDUs added. Because of the variability in demand cycles, EMWD has developed a comprehensive database of planned projects that tracks proposed new development and land use changes. This database is used in facility and supply planning to project future demands.
Ultimate demand estimates indicate that before EMWD reaches build out, the population will more than double compared to the current size. Land will continue to be developed in western Riverside County as more and more people move into the area. Just as it has in the past, EMWD will continue to meet the challenges of new development with innovation, efficiency, and responsibility.
System Description Section 3
Eastern Municipal Water District 3-10 Urban Water Management Plan
3.5 Land Uses within Service Area
EMWD’s service area includes a number of cities and unincorporated communities within Riverside County. The regional growth projections prepared by SCAG included consultation with these agencies to reflect the current and planned land uses within their jurisdictions. As part of its planning process, EMWD has also reviewed general and specific plans available from Riverside County and the cities within the service area.
3.6 Proposed Reorganization of Fallbrook Public Utility District and Rainbow Municipal Water District
The San Diego Local Agency Formation Commission (LAFCO) is currently processing two related proposals separately filed by the Rainbow Municipal Water District (MWD) and Fallbrook Public Utility District (PUD). These proposals request LAFCO approval for each agency to separately and concurrently detach from the San Diego County Water Authority (SDCWA) and annex to EMWD for purposes of changing wholesale water suppliers. Fallbrook PUD and Rainbow MWD are currently being supplied with imported water from Metropolitan’s Robert A. Skinner (Skinner) Water Treatment Plant via the Metropolitan/San Diego Aqueduct, and if the proposal is approved, would continue to be supplied with the same water by EMWD.
As part of the LAFCO process, EMWD evaluated current and projected supplies and demands with and without the annexation of Fallbrook PUD and Rainbow MWD under various hydrologic conditions.
Through the analysis, EMWD determined that EMWD’s current retail and wholesale customers would continue to recognize the same water supply reliability regardless of whether or not Fallbrook PUD and Rainbow MWD become wholesale customers of EMWD.
4-1
Water Use
Characterization
When EMWD was formed in 1950 it was a small agency, primarily serving agricultural customers. Since then, potable water use in EMWD’s service area has shifted from primarily agricultural to urban use. The reduction in agricultural demand has two major causes: rural farmland has been transformed to urban housing, and most remaining agricultural demands have been shifted to the recycled water system.
The development of new homes and the accompanying
increase in population has led to the increasing demand for domestic water. EMWD has experienced increases in demand as the region has experienced dry weather patterns and a growing economy. Even with the warmer, drier weather, and improvements in the economy, demand has remained well
below the peak seen in 2007. EMWD’s proactive conservation program, including an allocation-based tiered rate billing structure, has reduced demand even as the agency has added new dwelling units.
IN THIS SECTION
Water Use by Sector
Projections of Future
Demand
Water Use Characterization Section 4
Eastern Municipal Water District 4-2 Urban Water Management Plan
4.1 Past, Current, and Projected Water Use by Sector
In addition to retail potable water demand, EMWD delivers water to seven wholesale customer agencies and meets a significant portion of demand with recycled water. The sections below summarize the past and projected retail and wholesale water use within EMWD’s service area.
EMWD’s primary retail customers can be divided into residential, commercial, industrial, institutional, landscape and agricultural irrigation sectors. Although the residential sector is by far EMWD’s largest customer segment, each market segment plays a role in the growth and development of EMWD’s service area.
EMWD wholesales water to seven different agencies. The demand from each agency differs based on its need each year. These demands can be unstable at times as these agencies use water from EMWD to supplement their system when their local facilities are inadequate or fail. EMWD will also provide backup for the North Perris Water System if an emergency should occur.
Under the Hemet/San Jacinto Groundwater Management Area Water Management Plan (HSJ Management Plan), EMWD is responsible for providing water to recharge the groundwater basin. A portion of the water supplied will be SWP water imported through Metropolitan to meet the requirements of the Soboba Band of Luiseño Indians Water Settlement Agreement and to improve the reliability of groundwater in the area. Individual agencies, including EMWD, will be able to extract their allotted amount of the recharged water from the basin.
A portion of the water EMWD wholesales to Lake Hemet Municipal Water District (LHMWD) is raw water for agricultural uses. This water is needed especially when surface water is not available to LHMWD in dry years.
Water use for 2020 is shown in Table 4-1 and Table 4-2.
Table 4-1. DWR 4-1R Actual Demands for Potable and Raw Water
USE TYPE ADDITIONAL DESCRIPTION
LEVEL OF TREATMENT
WHEN DELIVERED
2020
VOLUME
Single Family Drinking Water 52,162
Multi-Family Drinking Water 6,535
Commercial Drinking Water 4,267
Industrial Drinking Water 571
Institutional/Governmental Drinking Water 1,629
Landscape Drinking Water 8,155
Agricultural irrigation Drinking Water 1,114
Agricultural irrigation Raw Water 446
Other Drinking Water 1,287
Non-Revenue System losses & unbilled, authorized consumption Drinking Water 8,507 TOTAL: 84,673
1) Passive water savings due to the restrictions outlined in the Administrative Code are included in the demand projections for EMWD’s retail service area. 2) Landscape demands remain constant/decrease over time as landscape accounts are offset by conversion to the recycled water system. 3) Projections for losses in the table include system losses (real and apparent) and unbilled, authorized consumption. EMWD’s water loss audits are completed on a fiscal year basis (rather than calendar year) and report estimated system losses.
Water Use Characterization Section 4
Eastern Municipal Water District 4-3 Urban Water Management Plan Table 4-2. DWR 4-1W Actual Demands for Potable and Raw Water
USE TYPE ADDITIONAL
DESCRIPTION
LEVEL OF TREATMENT
WHEN DELIVERED
2020
VOLUME
Groundwater Recharge Imported water recharge to the Hemet/San Jacinto Basin
Raw Water 6,467
Sales/Transfers/Exchanges to
Other Agencies
City of Perris Water System Drinking Water 1,685
Sales/Transfers/Exchanges to
Other Agencies
Western Municipal Water District Murrieta Division Drinking Water 1,809 Sales/Transfers/Exchanges to
Other Agencies
Nuevo Water Company Drinking Water 409
Sales/Transfers/Exchanges to
Other Agencies
Rancho California Water District Drinking Water 11,105
Sales/Transfers/Exchanges to
Other Agencies
Rancho California Water District Raw Water 13,923
Sales/Transfers/Exchanges to
Other Agencies
City of Hemet Drinking Water 0
Sales/Transfers/Exchanges to
Other Agencies
City of San Jacinto Drinking Water 0
Sales/Transfers/Exchanges to
Other Agencies
Lake Hemet Municipal Water District Raw Water 986
TOTAL: 36,384
Projected demands for EMWD were developed using information about planned development and land use. To track new developments, EMWD updates a Geographic Information System (GIS) database that tracks proposed development quarterly. Currently, EMWD is tracking the status of over 800 proposed projects and over 125,000 equivalent dwelling units. Growth rates were based on a forecast of future population prepared by the Southern California Association of Governments (SCAG). EMWD’s growth forecasts include both the retail and wholesale service areas.
EMWD’s retail demand projections include the water savings needed to meet the Water Conservation Act of 2009, SB X7-7 requirements. Demand forecasts for wholesale customers are developed from growth projections and through collaboration with sub agencies.
Wholesale demand projections are based on communications with sub agencies and respective growth projections for those agencies.
4.1.1 Codes and Other Considerations Used in Projections EMWD demand projections include water savings that result from a progressive conservation rate structure. EMWD uses an allocation-based tiered rate structure to encourage conservation by sending a strong price signal for water use over a budget allocation. Indoor budgets are based on an allocation of 55 gallons per capita per day. Outdoor budgets are based on the irrigated area and a percent of evapotranspiration. The percent of evapotranspiration is tied to the date the home was connected to EMWD’s system. The rate structure is used to enforce codes and standards in place to promote efficiency.
As codes and standards increase efficiency over time, EMWD has the ability to adjust the allocations.
The most recent update to EMWD’s allocations occurred in May of 2015, when a fifty percent Water Use Characterization Section 4
Eastern Municipal Water District 4-4 Urban Water Management Plan evapotranspiration standard was adopted for all new non-functional landscape installed after June 1, 2015. The details on EMWD’s rate structure can be found in Section 5, Article 6 of EMWD’s Administrative Code.
Senate Bill (SB) 606 and Assembly Bill (AB) 1668 because law in 2018. These laws establish guidelines for efficient water use and a framework for the implementation and oversight of new water use standards. The State will establish water use objectives and long-term standards for efficient water use applying to indoor use, outdoor use, and other use types including losses. Rulemaking is currently underway to implement this legislation and develop the standards for efficient water use. When the final standards are adopted, EMWD will evaluate the need to modify its water use budgets for customers.
Residential consumption is the dominant demand for EMWD, and this will continue in the future according to current general plans for the County of Riverside and local cities. Residential accounts are required to keep their demands below a budgeted allocation or pay a high rate for water use.
Accounts dedicated to irrigating landscaped areas have the second highest consumption rate. Just as with residential accounts, landscape accounts are subject to a budgeted allocation or pay a higher rate for over budget use. New development in both of these account classes are provided with lower budget allocations to account for water use efficiency requirements for new development.
Section 5, Article 6 of EMWD’s Administrative Code details EMWD’s rate structure. Passive water savings due to the provisions outlined in the Administrative Code are included in the demand projections for EMWD’s retail service area.
In 2019, EMWD began implementing water budgets and tiered rates for additional commercial, industrial, and institutional (CII) customers. Commercial developments will also continue to increase and will be focused along the major transportation corridors through EMWD’s boundary (Interstate Highway 15, Interstate Highway 215, Highway 79, and Highway 74). Land use-based projections indicate that the ratio of commercial demand to retail demand will increase slightly over time.
EMWD has a very small industrial use sector, accounting for less than one percent of retail demand.
Industrial developments are proposed around Interstate Highway 215 and other main transportation corridors. Much of the proposed growth consists of large warehouse projects with minimal water demand. As much as feasible, EMWD will meet the needs of high-water demand industrial customers with recycled water.
Currently, the demand from institutional accounts account for about two percent of retail demand for potable water. EMWD works closely with institutional and government accounts to help reduce their demand and promote the efficient use of water. Whenever possible, recycled water is used for landscape irrigation for schools and other government facilities. EMWD has also developed conservation programs designed to assist public sector accounts like schools to reduce demand through the retrofit of inefficient devices. These programs are discussed further in Chapter 9.
EMWD’s service area has gone through a major transformation from a farming community to a residential community. Currently, agricultural demand accounts for less than four percent of EMWD’s potable and raw water market, with a substantial portion of the agricultural community being served by the recycled water system. Agricultural demand for potable and raw water is expected to remain relatively stable for the next twenty years with some fluctuations from year to year due to changes in weather or crop rotations. It is also possible that a general decline over time may be observed both as a result of continued urbanization and increased recycled water usage.
Project demands for the retail and wholesale customers are shown in Table 4-3 and Table 4-4.
Water Use Characterization Section 4
Eastern Municipal Water District 4-5 Urban Water Management Plan Table 4-3. DWR 4-2R Projected Demands for Potable and Raw Water -
ADDITIONAL DESCRIPTION
PROJECTED WATER USE
USE TYPE 2025 2030 2035 2040 2045
Single Family 66,900 71,700 76,700 80,500 84,000
Multi-Family 8,500 9,100 9,700 10,200 10,600
Commercial 6,100 6,500 7,000 7,300 7,600
Industrial 600 600 700 700 700
Institutional/Governmental 2,700 2,900 3,100 3,200 3,400 Landscape 8,400 7,600 6,800 6,200 5,500
Agricultural irrigation Potable Water 1,500 1,500 1,500 1,500 1,500 Agricultural irrigation Raw Water 500 500 500 500 500
Other 0 0 0 0 0
Non-Revenue System losses & unbilled, authorized
consumption 7,400 7,900 8,400 8,800 9,200
TOTAL: 102,600 108,300 114,400 118,900 123,000
1) Passive water savings due to the provisions outlined in the Administrative Code are included in the demand projections for EMWD’s retail service area. 2) Landscape demands remain constant/decrease over time as landscape accounts are offset by conversion to the recycled water system. 3) Projections for losses in the table include system losses (real and apparent) and unbilled, authorized consumption.
Table 4-4. DWR 4-2W Projected Demands for Potable and Raw Water -
ADDITIONAL DESCRIPTION
PROJECTED WATER USE
USE TYPE 2025 2030 2035 2040 2045
Groundwater Recharge Imported water recharge to the
Hemet/San Jacinto Basin 7,500 7,500 7,500 7,500 7,500
Sales/Transfers/Exchanges
to Other Agencies
City of Perris Water System 1,800 1,900 2,100 2,200 2,300 Sales/Transfers/Exchanges
to Other Agencies
Western Municipal Water District Murrieta
Division
1,000 1,300 1,600 2,000 2,300
Sales/Transfers/Exchanges
to Other Agencies
Nuevo Water Company 500 1,000 1,100 1,200 1,200
Sales/Transfers/Exchanges
to Other Agencies
Rancho California Water District (Potable) 27,100 20,000 21,000 15,200 16,500 Sales/Transfers/Exchanges
to Other Agencies
Rancho California Water District (Raw) 15,200 15,200 15,200 22,300 22,300 Sales/Transfers/Exchanges
to Other Agencies
City of Hemet 0 0 0 0 0
Sales/Transfers/Exchanges
to Other Agencies
City of San Jacinto 0 0 0 0 0
Sales/Transfers/Exchanges
to Other Agencies
Lake Hemet Municipal Water District 5,100 5,500 5,900 6,300 6,700 TOTAL: 58,200 52,400 54,400 56,700 58,800
1) Lake Hemet Municipal Water District generally receives raw water, but may purchase some potable water in the future based on operational conditions 2) Groundwater recharge will occur under the Hemet/San Jacinto Water Management Plan.
Water Use Characterization Section 4
Eastern Municipal Water District 4-6 Urban Water Management Plan In addition to potable and raw water demands, EMWD also uses recycled water for beneficial uses such as municipal, industrial, landscape, agricultural and environmental use. These uses are described in more detail in Chapter 6.
The gross water use including recycled water for the retail and wholesale systems is shown in Table 4-5 and Table 4-6.
Table 4-5. DWR 4-3R Total Gross Water Use
- 2020 2025 2030 2035 2040 2045
Potable and Raw Water
From Table 4-1R and 4-2R
84,673 102,600 108,300 114,400 118,900 123,000
Recycled Water Demand*
From Table 6-4R
31,243 43,330 49,020 54,500 59,800 64,100
TOTAL WATER USE: 115,916 145,930 157,320 168,900 178,700 187,100
Table 4-6. DWR 4-3W Total Gross Water Use
- 2020 2025 2030 2035 2040 2045
Potable and Raw Water
From Table 4-1W and 4-2W 36,384 58,200 52,400 54,400 56,700 58,800 Recycled Water Demand*
From Table 6-4W 1,285 4,770 5,180 5,600 5,600 5,600
TOTAL WATER DEMAND: 37,699 62,970 57,580 60,000 62,300 64,400
Water Use Characterization Section 4
Eastern Municipal Water District 4-7 Urban Water Management Plan
4.2 Distribution System Water Losses
Water loss is a combination of apparent losses and real losses. Apparent losses are attributed to unauthorized consumption, customer metering inaccuracies and systematic data handling errors. Real losses are attributed to such physical water losses as leakage along the pipe system, at the storage tanks, or at the service connections. Real losses in EMWD’s potable system are highest where pipelines are older and smaller in size, especially in the Hemet and San Jacinto areas that were once owned by the Fruitvale Mutual Water Company. EMWD tracks pipe leaks and identifies pipes for replacement as part of its capital improvement program. These efforts are described in more detail in Chapter 9.
EMWD used the American Water Works Association (AWWA) water system balance methodology to prepare water audits for the last five fiscal years. While EMWD provides both retail and wholesale service and generally reports these services separately throughout this UWMP, its physical facilities are shared. Therefore, losses cannot be easily attributed to one system or the other. For this reason, all of EMWD’s water losses are reported in a single table.
The results of the water audits are summarized in Table 4-7. The completed audits are included in Appendix D.
Table 4-7. DWR 4-4R 12 Month Water Loss Audit Reporting
REPORT PERIOD START DATE
MM YYYY VOLUME OF WATER LOSS (AF)
7 2015 8,865
7 2016 6,221
7 2017 4,321
7 2018 7,360
7 2019 5,096
1) EMWD's retail and wholesale physical facilities are shared. Therefore, losses cannot be easily attributed to one system or the other. For this reason, all of EMWD’s water losses are reported in the DWR Table 4-4 for retail. 2) Water Loss includes Real losses and Apparent losses
Water Use Characterization Section 4
Eastern Municipal Water District 4-8 Urban Water Management Plan
4.3 Water Use for Lower Income Households
Senate Bill 1087 requires that water use projections in an UWMP include the projected water use for single family and multi-family residential housing for lower income households as identified in the housing element of any city and county in the service area of the supplier. EMWD used the percent of low income and very low-income housing identified in the Regional Housing Needs Assessment (RHNA) for 2021 through 2029, approved by the Southern California Association of Governments, to estimate the number of new low-income housing units that may require service within EMWD’s retail service area. The number of projected low-income housing units within each jurisdiction served by EMWD is shown in Table 4-8. The demands for these units are included in the total projected residential retail demands.
Table 4-8. Low Income Housing Unit Projection
JURISDICTION
PROJECTED HOUSING UNITS PERCENT VERY LOW INCOME
TOTAL VERY LOW INCOME LOW INCOME OR LOW INCOME
Hemet 6,466 812 732 24%
Menifee 6,609 1,761 1,051 43%
Moreno Valley 13,627 3,779 2,051 43%
Murrieta 3,043 1,009 583 52%
Perris 7,805 2,030 1,127 40%
San Jacinto 3,392 800 465 37%
Temecula 4,193 1,359 801 52%
TOTAL 45,135 11,550 6,810 41%
The demand projections in this UWMP include future water savings and demand for lower income residential households as summarized in Table 4-9.
Table 4-9. DWR 4-5R Inclusion in Water Use Projections
ARE FUTURE WATER SAVINGS INCLUDED IN PROJECTIONS?
REFER TO APPENDIX K OF UWMP GUIDEBOOK. Yes
SECTION OR PAGE NUMBER WHERE THE CITATIONS UTILIZED IN
THE DEMAND PROJECTS CAN IT BE FOUND: Section 4.1.1
ARE LOWER INCOME RESIDENTIAL DEMANDS INCLUDED IN
PROJECTIONS? Yes
Water Use Characterization Section 4
Eastern Municipal Water District 4-9 Urban Water Management Plan
4.4 Climate Change Considerations
EMWD has considered the impacts of climate change on water demands as part of long-term strategic planning. Climate change is expected to cause a rise in temperatures in the region which will increase evapotranspiration and water demand. This is particularly true for EMWD’s agricultural sector.
Additionally, in urbanized areas with limited vegetation, climate change can exacerbate the heat island effect which may result in increased energy and cooling demands.
EMWD’s service area lies within the Santa Ana River and Santa Margarita River Watersheds. The Santa Ana River Watershed is covered under the Santa Ana Watershed Planning Authority’s (SAWPA)’s Integrated Regional Water Management (IRWM) Plan for the Santa Ana River Watershed.
A climate change vulnerability assessment was completed for the region as part of the IRWM Plan update. Key demand vulnerabilities identified by the SAWPA Region that relate to EMWD’s service area include:
Increased temperature could lead to increases in industrial cooling water needs Seasonal outdoor water use is expected to increase
Climate-sensitive crops will be impacted
Continued education and increased employment of efficient use technologies will be required Changes in snowmelt patterns in the future may make it difficult to balance water demands EMWD continues to work toward decreasing demands for potable water through water conservation programs and full utilization of recycled water. EMWD’s conversion of agricultural, landscape and industrial uses to recycled water has helped EMWD mitigate climate change impacts on these demands.
EMWD is currently preparing a Climate Action Plan (CAP). EMWD has a two-pronged approach for investing in projects that address climate change. EMWD is committed to investing in climate resilient water supplies and landscapes as well as demand reduction efforts. EMWD is also committed to investing in projects that mitigate climate change by maximizing energy independence, reducing GHG emissions, and advancing policies and strategies that address climate adaptation.
5-1
SB X7-7 Baseline, Targets
and 2020 Compliance
The Water Conservation Act of 2009, SB X7-7, set a requirement for water agencies to reduce their per capita water use by the year 2020. The overall goal was to reach a statewide reduction of per capita urban water use of 20 percent by December 31, 2020.
DWR, through a public process, developed and published
Methodologies for Calculating Baseline and Compliance Urban Water Per Capita Use for consistent application of SB X7-7 throughout the state.
IN THIS SECTION
Baselines & Targets
2020 Compliance
SB X7-7 Baseline, Targets and 2020 Compliance Section 5 Eastern Municipal Water District 5-2 Urban Water Management Plan As a wholesaler, EMWD is required to provide an assessment of its present and proposed future measures, programs, and policies that will help its wholesale customers achieve their SB X7-7 water use reduction targets. As both a wholesaler and a retailer, EMWD currently participates in and supports programs developed and implemented by Metropolitan that benefit its entire service area, including wholesale customers. These programs include region-wide rebates for both commercial and residential customers, conservation messaging and outreach, and research and development of new conservation programs and devices. EMWD also actively promotes conservation throughout Riverside County through participation in organizations such as the Riverside County Water Task Force. EMWD will continue to support water reduction by wholesale customers through the use of outreach, technical support, and participation in regional programs. EMWD’s wholesale water conservation efforts are described in more detail in Chapter 9.
Any one of four methods can be used to determine the per capita water use targets. Three methods were specified in the legislation, and the fourth was developed by DWR. The four methods are:
Method 1: Use 80 percent of the baseline as the per capita water use target. Method 2: Use an efficiency standard with targets for indoor use, landscape use, and commercial, industrial, and institutional (CII) use and an optional target for agricultural use. Method 3: Use 95 percent of the applicable state hydrologic region target developed by DWR and published in the state’s 20X2020 Water Conservation Plan. Method 4: Use an alternative method developed by DWR that accounts for water savings due to water metering and achieving water conservation measures in three water use sectors.
As documented in its 2015 UWMP, EMWD used Method 2 to calculate its target water use for 2020.
Water purveyors were required to define a continuous 10- to 15-year baseline period ending between December 31, 2004 and December 31, 2010 and calculate an average water use over this period. If the percentage of recycled water used in the year 2008 was at least 10 percent of the total water used, the agency could use up to a 15-year period. If the percentage of recycled water was less than 10 percent, a 10-year baseline period was required. Additionally, a continuous five-year period ending between December 31, 2007 and December 31, 2010 was used to confirm that the selected 2020 target meets the minimum water use reduction requirements.
EMWD selected a 10-year baseline period beginning 1999 and ending 2008 despite providing more than 10 percent recycled water in 2008. A 5-year baseline period was chosen between 2003 and 2007 for the target confirmation.
5.1 SB X7-7 Forms and Tables
EMWD has completed the required forms for compliance with SB X7-7 and included them in Appendix C.
5.1.1 Baselines and Target Summary
The baselines and targets calculated in EMWD’s 2015 UWMP are summarized in Table 5-1. EMWD is not making any changes to its baselines or targets in the 2020 UWMP.
Table 5-1. DWR 5-1R Baselines and Targets Summary
BASELINE PERIOD START YEAR END YEAR AVERAGE BASELINE GPCD* CONFIRMED 2020 TARGET * 10-15 Year 1999 2008 197
176
5 Year 2003 2007 195
*All values are in Gallons per Capita per Day (GPCD)
SB X7-7 Baseline, Targets and 2020 Compliance Section 5 Eastern Municipal Water District 5-3 Urban Water Management Plan
5.2 Methods for Calculating Population and Gross Water Use EMWD used methods consistent with previous UWMPs and guidance from DWR to calculated service area population and gross water use for 2020.
5.2.1 Service Area Population
EMWD’s retail baseline population was calculated using DWR’s Population Tool. For 2020, EMWD used the Population Tool in combination with data from the Southern California Association of Governments and estimated persons per connection. The Population Tool uses preloaded Census data for the years 1990, 2000, and 2010 and uploaded service area boundary maps for the corresponding years to calculate service area population in Census years. The annual numbers of single family and multi-family connections in EMWD’s retail service area were used to calculate a population-per-connection ratio for Census years. The Population Tool interpolated the population-perconnection ratio to estimate population for non-Census years.
5.2.2 Gross Water Use
Gross water use was calculated using the best available meter data for water entering and exiting EMWD’s distribution system. The distribution system includes potable water service for both domestic and agricultural demand, and raw water service to a few agricultural customers.
Potable sources include potable groundwater wells, treated water from two desalination plants, imported water from Metropolitan and water wheeled from other agencies. Imported water from Metropolitan includes water delivered directly to the potable distribution system and raw water treated at EMWD facilities. Small amounts of water are also delivered from Western Municipal Water District and Rancho California Water District. Only water delivered to the distribution system is included in the gross water calculations. The single source for the raw water system is imported raw water from Metropolitan.
EMWD sells a portion of the water that enters its distribution system to wholesale customers. Some Metropolitan connections also have a portion of water that is diverted to other agencies without entering EMWD’s distribution system. RCWD, EMWD’s largest wholesale customer, has dedicated connections to Metropolitan’s system and does not impact EMWD’s distribution system.
5.3 2020 Compliance Daily Per-Capita Water Use (GPCD)
In the 2020 UWMP, agencies must demonstrate compliance with their confirmed 2020 Target GPCD.
EMWD estimated its gross water use and service area populations using the methods described for previous years. EMWD did not make any optional adjustments to its 2020 gross water use.
A summary of EMWD’s compliance is provided in Table 5 2.
Table 5-2. DWR 5-2R 2020 Compliance
ACTUAL 2020
GPCD*
OPTIONAL ADJUSTMENTS TO 2020 GPCD 2020 CONFIRMED
TARGET GPCD
SUPPLIER ACHIEVED TARGETED
TOTAL ADJUSTMENTS* ADJUSTED 2020 GPCD* REDUCTION IN 2020 125 0 0 176 Yes
*All values are in Gallons per Capita per Day (GPCD)
SB X7-7 Baseline, Targets and 2020 Compliance Section 5 Eastern Municipal Water District 5-4 Urban Water Management Plan
5.3.1 Adjustments Due to Factors Outside of a Supplier’s Control EMWD has not made any special adjustments to its water use for 2020.
5.4 Regional Alliance
EMWD has elected to comply with SB X7-7 as an individual agency and is not participating in a Regional Alliance.
6-1
Water Supply
Characterization
This chapter describes the sources of supply used by EMWD to meet demands.
EMWD’s supply sources include local groundwater, imported water from Metropolitan, and recycled water. The discussion in this chapter is structured to follow the order recommended by DWR.
IN THIS SECTION
Sources of Supply
Recycled Water
Program
Projected Future
Supply Portfolio
Water Supply Characterization Section 6
Eastern Municipal Water District 6-2 Urban Water Management Plan
6.1 Water Supply Analysis Overview
EMWD has a diverse portfolio of local and imported supplies. Local supplies include recycled water, potable groundwater, and desalinated groundwater. EMWD is a leader in recycled water production and use. EMWD generally uses 100 percent of its recycled water to irrigate landscape and agricultural fields and provide water for industrial customers.
Groundwater is produced from two management areas within the service area. EMWD works diligently with other stakeholders to protect the quality and integrity of the groundwater basins. These efforts include recharging the basins with imported water and limiting native groundwater production when appropriate. EMWD has developed plans to expand groundwater recharge to improve reliability for its customers during normal and dry year demand periods. These plans include water banking which allows for imported water from northern California to be percolated into local aquifers for use during dry years and implementation of an advanced water purification facility for water to be used in aquifer recharge.
In addition to the production of potable groundwater, EMWD treats brackish groundwater at two locations, with a third desalter scheduled to come online during 2021. EMWD’s groundwater desalination program has the benefit of not only providing a sustainable, reliable source of potable water for its customers, but also protecting higher quality groundwater from rising levels of brackish groundwater. These local supplies help EMWD meet regional goals for supply reliability and help limit the impact of imported water shortages.
In addition to local supplies, EMWD receives imported water from the Metropolitan Water District of Southern California (Metropolitan) in three forms: delivered directly as potable water, delivered to EMWD as raw water and then treated at EMWD’s two local filtration plants, or delivered to EMWD as raw water for non-potable use and groundwater recharge.
Approximately half of the water used in the EMWD service area is imported by Metropolitan. EMWD has been able to maintain a balance of local and imported water even as new connections have been added. This has been accomplished through the implementation of local supply projects and increased water use efficiency.
These supplies are discussed in more detail in the sections that follow. Key facilities in EMWD’s service area are shown in Figure 6-1.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-3 Urban Water Management Plan Figure 6-1. Agencies and Facilities
Water Supply Characterization Section 6
Eastern Municipal Water District 6-4 Urban Water Management Plan
6.2 UWMP Water Supply Characterization
6.2.1 Purchased or Imported Water
Metropolitan was formed in 1928 by thirteen Southern California cities to develop, store and distribute water for domestic and municipal purposes to the residents of Southern California. Today, the Metropolitan service area stretches across the Southern California coastal plain to 26 member agencies and includes portions of Los Angeles, Orange, Riverside, San Bernardino, and Ventura counties.
Metropolitan is a wholesale water provider and has no retail customers. It provides treated and untreated water directly to its member agencies. Over the last ten years, Metropolitan has provided between 50 percent and 60 percent of the municipal, industrial, and agricultural water used in its nearly 5,200-square mile service area. The remaining water is provided through local resources and imported water from other sources.
EMWD is one of the 26 member agencies that make up Metropolitan, which include fourteen cities, ten other municipal water districts and one county water authority. The statutory relationship between Metropolitan and its member agencies establishes the scope of EMWD’s entitlements from Metropolitan. EMWD, like other member agencies, receives deliveries at different points in the system and pays for the service through a rate structure made up of multiple components. Each year member agencies advise Metropolitan how much water they anticipate they will need during the next five years.
Metropolitan then works with member agencies to develop forecasts of long-term future water supply.
Metropolitan delivers supply to member agencies from two sources, the Colorado River Aqueduct (CRA), which it owns and operates, and the State Water Project (SWP), owned and operated by DWR.
Additional information about Metropolitan is provided in Metropolitan’s 2020 UWMP.
EMWD and Metropolitan
The original mission of Metropolitan was to build the CRA, bringing Colorado River water to Southern California. As Metropolitan was constructing the San Jacinto Tunnel Portion of the project, a large amount of seepage was encountered in the pipeline. As the seepage began to affect local water resources within the region, residents began to organize to protect their water supply. Around the same time, the region experienced a period of dry weather conditions and the groundwater basin began to experience overdraft. It became clear that a source of imported water was necessary. EMWD was formed in 1950 to bring imported water into the area. In 1951, it was annexed into Metropolitan and the first major sale of Colorado River water within EMWD began in July of 1952.
In 1960, Metropolitan contracted for additional water supplies from the SWP, operated by DWR. In 1972, the SWP began conveying water from the wet climate of northern California to the dry climate of Southern California. Through the 1980s, EMWD built facilities to take advantage of the SWP water available, and today, EMWD continues to receive a portion of its imported water supply from Northern California. Treated potable water is available in the north from the Mills Water Treatment Plant and in the south through the Skinner Water Treatment Plant. EMWD also owns and operates two water filtration plants that treat raw imported water, in Perris and Hemet. Raw imported water is also used for recharge purposes and to meet agricultural demands.
Metropolitan does not provide supply projections for each member agency. Instead Metropolitan uses a regional approach to developing projections. Metropolitan calculates the demand for the entire region, as discussed in its UWMP. Using information about existing and proposed local projects, Metropolitan then determines the amount of imported water supply and demand. Throughout the preparation of the 2020 UWMP, EMWD has provided to Metropolitan information about local supply Water Supply Characterization Section 6
Eastern Municipal Water District 6-5 Urban Water Management Plan and projects, clarifications on boundary information, and population projections. Based on this information and information provided by other member agencies, Metropolitan has determined it is able to meet the demands of all member agencies through 2045.
6.2.2 Groundwater
EMWD produces potable groundwater from two management plan areas within the San Jacinto Groundwater Basin. Both management plan areas are part of the San Jacinto Groundwater Basin (DWR Bulletin 118 Groundwater Basin Number 8-05). The areas are the West San Jacinto Groundwater Sustainability Agency Plan Area (West San Jacinto Basin) and the Hemet/San Jacinto Water Management Plan area (Hemet/San Jacinto Basin). EMWD also owns and operates two desalination plants that convert brackish groundwater from the West San Jacinto Basin into potable water. These plants not only provide a reliable source of potable water, but they also protect potable sources of groundwater and support EMWD’s groundwater salinity management program.
EMWD is a key player in three cooperative efforts to protect groundwater quality and reliability:
The West San Jacinto Basin was formerly governed by the West San Jacinto Groundwater Basin Management Plan (WSJ Management Plan), developed in 1995 and included in Appendix E of this UWMP. Eastern Municipal Water District (EMWD), acting as the Groundwater Sustainability Agency (GSA) for the non-adjudicated portions of the San Jacinto Groundwater Basin, has developed a Groundwater Sustainability Plan (GSP) in compliance with the 2014 Sustainable Groundwater Management Act (SGMA), which is codified in California Water Code (CWC), Part 2.75 (Sustainable Groundwater Management), Section 10720 et seq. The West San Jacinto Basin will be governed by the GSP following its adoption by January 31, 2022.
The Hemet / San Jacinto (HSJ) Management Plan is implemented by the Hemet-San Jacinto Watermaster (Watermaster). The Watermaster was appointed and is supervised by the Superior Court of the State of California for the County of Riverside, pursuant to the Stipulated Judgment entered in April 2013 (Appendix G).
Additionally, a subset of participants (EMWD, LHMWD and the Soboba Band of Luiseño Indians [Soboba Tribe]) also actively manage water levels under a separate agreement under the Canyon Operating Plan.
Native potable groundwater production in the Hemet/San Jacinto Basin is limited according to HSJ Management Plan provisions to prevent continued overdraft. EMWD anticipated the limitations on native groundwater production it has experienced and has developed alternatives to assure reliability including an Integrated Recharge and Recovery Program (IRRP), filtration plants to treat and deliver imported water to areas dependent on groundwater, and recycled water use for irrigation of landscape and agriculture. In addition to the existing IRRP, EMWD is developing the Enhanced Recharge and Recovery Program (ERRP) to increase conjunctive use and facilitate groundwater banking. Phase 1 of the ERRP program is included in the Santa Ana River Conservation & Conjunctive Use Program (SARCCUP), a cooperative program between Metropolitan, EMWD, and other agencies in the Santa Ana Watershed to store imported water during wet years for use during dry years.
Portions of EMWD also overlay the Santa Margarita Valley Groundwater Basin. EMWD does not extract groundwater from the Santa Margarita Valley Groundwater Basin and has no plans to do so.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-6 Urban Water Management Plan
6.2.2.1 Basin Description
The West San Jacinto Basin and the Hemet/San Jacinto Basin are both located within the San Jacinto Groundwater Basin. Groundwater management zones within the San Jacinto Groundwater Basin were delineated based on areas of lower groundwater flow, groundwater divides, and changes in groundwater quality. The West San Jacinto Basin covers the Perris North, Perris South, San Jacinto Lower Pressure, and Menifee Groundwater Management Zones, and the Lakeview portion of the Lakeview/Hemet North Groundwater Management Zone. The Hemet/San Jacinto Basin is comprised of the Hemet South, Canyon, and San Jacinto Upper Pressure Groundwater Management Zones, as well as the Hemet North portion of the Lakeview/Hemet North Groundwater Management Zone.
EMWD produces water for potable use or blending in four of the groundwater management zones:
Perris North, Hemet South, San Jacinto Upper Pressure and Canyon. Desalter production wells are located in the Perris South and Lakeview/Hemet North Groundwater Management Zones. The Groundwater Management Zones are summarized in Table 6-1 and are shown in Figure 6-2.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-7 Urban Water Management Plan Table 6-1. Groundwater Management Zones
BASIN MANAGEMENT AREA DESCRIPTION
WEST SAN
JACINTO
Perris North Boundaries include the Casa Loma fault to the northeast bordering the San Jacinto Lower Pressure Management Zone; a bedrock constriction to the south bordering the Perris South Groundwater Management Zone; the Bernasconi Hills and the Lakeview Mountains to the west; and the bedrock and surrounding hills the north and west. The Casa Loma fault zone is generally not a barrier to groundwater flow in this section of the fault. Therefore, groundwater leaks across the fault zone as underflow from the San Jacinto Lower Pressure Groundwater Management Zone.
Lake Perris is located to the east of the Perris North Groundwater Management Zone and is surrounded by the Bernasconi Hills and Lakeview Mountains to the north, east, and south, and a dam on the west side. Seepage is known to occur under the dam through a subterranean channel into the Perris North Groundwater Management Zone.
Perris South Boundaries include a groundwater divide in the Winchester area; bedrock constrictions/saddles bordering the Menifee Groundwater Management Zone; a bedrock constriction/saddle bordering the Lakeview/Hemet North Groundwater Management Zone; a bedrock constriction bordering the Perris North Groundwater Management Zone; and the surrounding bedrock mountains and hills. A groundwater divide exists in the Winchester area near Highway 79. The divide is likely an artifact of natural and artificial recharge and groundwater production patterns. As such, the position (or the very existence) of this groundwater divide may vary with changing seasons, artificial recharge and/or production patterns.
Southwest of EMWD's Winchester Ponds, a narrow constriction in the bedrock coincides with a buried bedrock saddle. This area of constriction in the water-bearing alluvium is a boundary between the Perris South and Menifee Groundwater Management Zones. Groundwater can flow through this bedrock gap from the Winchester area into the Menifee Groundwater Management Zone; this is especially true during times of high groundwater levels.
Southeast of Sun City, a bedrock constriction in the water-bearing alluvium is also a boundary between the Perris South and Menifee Groundwater Management Zones. Groundwater flows through this bedrock gap from the Sun City area into the Menifee Groundwater Management Zone.
To the northeast, the gap between the Bernasconi Hills and the Lakeview Mountains becomes narrow and the buried bedrock surface forms a saddle. This area of constriction in the water-bearing alluvium is the boundary between the Perris South and Lakeview Groundwater Management Zones. Under historic flow conditions, groundwater flowed westward from Lakeview into Perris South. However, groundwater currently flows from Perris South eastward into Lakeview toward a “pumping depression” in the groundwater table.
San Jacinto Lower
Pressure
Boundaries include the Claremont fault to the northeast; the Casa Loma fault and its northwestward extension; various crystalline bedrock outcrops to the north and west; and the flow system boundary with the San Jacinto Upper Pressure Groundwater Management Zone to the southeast. The Casa Loma fault zone is a leaky barrier to groundwater flow to the Perris North Groundwater Management Zone in this section of the San Jacinto Groundwater Basin.
Recharge rates along with water quality differences between San Jacinto Upper Pressure and San Jacinto Lower Pressure characterize the location of the barrier between the two zones.
Menifee Boundaries include the bedrock constrictions/saddles bordering the Perris South Groundwater Management Zone, a bedrock constriction to the east, and the surrounding bedrock mountains and hills. Southwest of the Winchester Ponds, a narrow constriction in the bedrock coincides with a buried bedrock saddle surface. This area of constriction in the water-bearing alluvium is a boundary between the Perris South and Menifee Groundwater Management Zones. Groundwater can flow through this bedrock gap from the Winchester area into the Menifee Groundwater Management Zone, especially during times of high groundwater levels.
Southeast of Sun City, a bedrock constriction in the water-bearing alluvium is also a boundary between the Perris South and Menifee Groundwater Management Zones. Groundwater flows through this bedrock gap from the Sun City area into the Menifee Groundwater Management Zone.
WSJ AND HSJ
Lakeview / Hemet
North
Boundaries of the Lakeview/Hemet North Groundwater Management Zone include the Casa Loma fault zone to the east; the groundwater divide near Esplanade Avenue to the south; the Lakeview Mountains to the west and south; the Bernasconi Hills to the north; and a bedrock constriction/saddle to the west. The Casa Loma fault zone is a partial barrier to groundwater flow. Generally, groundwater leaks across the fault zone as underflow from the San Jacinto Upper Pressure Groundwater Management Zone. Impermeable, crystalline bedrock outcrops that compose the Bernasconi Hills and the Lakeview Mountains to the north and south, respectively, are hard rock barriers to groundwater flow. To the west, the gap between the Bernasconi Hills and the Lakeview Mountains becomes narrow and the buried bedrock surface forms a saddle. This area of constriction in the water-bearing alluvium is the boundary between the Perris South and Lakeview/Hemet North Groundwater Management Zones.
HEMET/SAN
JACINTO
Hemet South Boundaries include the Casa Loma and Bautista Creek fault zones to the east; the groundwater divide near Esplanade Avenue to the north; the Lakeview Mountains to the northwest; the groundwater divide in the Winchester area to the west; and various crystalline bedrock outcrops to the south. The Casa Loma and Bautista Creek fault zones are generally known barriers to groundwater. However, groundwater leaks across portions of the Casa Loma Fault Zone as underflow into the San Jacinto Upper Pressure Groundwater Management Zone.
San Jacinto Canyon The boundaries include the San Jacinto Mountains to the east, north, and south, as well as the San Jacinto fault zone to the west. The San Jacinto Mountains are composed of consolidated crystalline bedrock and semi-consolidated sedimentary rocks. These rocks are relatively impermeable, providing limited groundwater seepage into the basin and bound the water-bearing, alluvium-filled canyons within this groundwater management zone. A branch of the San Jacinto fault zone extends southeast along the channel of Bautista Creek until it intersects the Park Hill fault and acts as an impermeable barrier at depth. The barrier effect of the fault forces groundwater upwards within the San Jacinto River upstream of the fault causing muddy areas at the surface. This area is known as the Cienega and is an area of significant municipal groundwater production.
San Jacinto Upper
Pressure The San Jacinto Upper Pressure Groundwater Management Zone is bounded by the San Jacinto fault to the northeast, the Casa Loma and Bautista Creek fault zones to the southwest and the flow system boundary with the San Jacinto Lower Pressure Groundwater Management Zone to the northwest. The Claremont fault is a known barrier to groundwater flow and separates the San Jacinto Graben from both the San Timoteo Badlands and the San Jacinto Mountains. East of the City of San Jacinto, a branch of the San Jacinto fault zone cuts the alluvial fill by extending southeast across the San Jacinto River and along the channel of Bautista Creek until it intersects the Park Hill fault.
This branch of the San Jacinto fault zone separates the San Jacinto Upper Pressure Groundwater Management Zone from the Canyon Groundwater Management Zone. The Casa Loma and Bautista Creek fault zones are generally known barriers to groundwater flow. However, studies show groundwater leaks across portions of the Casa Loma Fault zones as underflow along the Hemet South and Lakeview/Hemet North Groundwater Management Zones.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-8 Urban Water Management Plan Figure 6-2. Groundwater Management Zones
Eastern Municipal Water District 6-9 Urban Water Management Plan
6.2.2.2 WSJ Management
In the West San Jacinto Basin, a cooperative groundwater management plan is already in place to protect the reliability and quality of the water supply. In June 1995, EMWD adopted the WSJ Management Plan in accordance with the statutes in the California Water Code Sections 10750 through 10755 resulting from the passage of AB 3030. The plan was adopted after extensive public outreach and meetings with interested individuals and agencies. A copy of the Management Plan is included in Appendix E.
Implementation of the WSJ Management Plan began directly after its adoption. Initial efforts to implement the WSJ Management Plan included establishing an advisory committee; prioritizing the management zones; evaluating groundwater resources including establishing groundwater quality, level, and extraction monitoring programs; and conducting hydro-geophysical investigations. The West San Jacinto Groundwater Basin Management Plan Annual Report, documenting the implementation of the plan and activities in the groundwater management zones, has been published annually since 1996.
SGMA was passed into law in 2014 and required that medium and high priority groundwater basins designated by the DWR be managed by GSAs. The San Jacinto Groundwater Basin was deemed a high priority basin by the DWR. Subsequently, EMWD notified DWR of its intent to become the GSA for the non-adjudicated portion of the San Jacinto Groundwater Basin in January 2017. EMWD performed an extensive public outreach effort to ensure that the interests of all beneficial uses and users of groundwater would be considered in the process of forming the GSA, and in the development and implementation of this GSP. After EMWD staff conducted public workshops, reached out to stakeholder agencies (e.g., cities, counties, water districts, watermasters, and state agencies), and circulated notices in the press, the EMWD Board of Directors approved Resolution No. 2016-135 in December 2016, which formalized EMWD’s intention to be the GSA for the West San Jacinto GSA Area and, EMWD’s Board of Directors became the exclusive GSA for the western portion of the San Jacinto Groundwater Basin on April 24, 2017.
EMWD, as the GSA, initiated the development of the San Jacinto Groundwater Basin GSP in February 2019 and is anticipated to adopt and submit the GSP to the DWR by January 31, 2022. The purpose of the GSP is to define the conditions under which the groundwater resources of the West San Jacinto GSA Plan Area, which support agricultural, domestic, municipal and industrial, and environmental uses, will be managed sustainably in the future. The adoption of the GSP represents the commitment of the West San Jacinto GSA to maintain long-term, sustainable use of groundwater resources within the West San Jacinto GSA Plan Area, as required by SGMA. Over the next 20 years, data will continue to be gathered, analyzed, and used to refine the estimated sustainable yield and understanding of the sources of and influences on degraded water quality. As the understanding of the West San Jacinto GSA Plan Area improves, the findings of this GSP will be evaluated and updated as necessary. The GSP documents a viable approach, determined by the GSA in collaboration with stakeholders and informed by the best available information, to maintaining the long-term sustainability of the groundwater resources within the West San Jacinto GSA Plan Area.
Eastern Municipal Water District 6-10 Urban Water Management Plan
6.2.2.3 HSJ Management
In 2001, the Cities of Hemet and San Jacinto, LHMWD, EMWD, and representatives of the private groundwater producers, with DWR acting as an impartial mediator, began working on a groundwater management plan for the Hemet/San Jacinto Basin. The group discussed and resolved several controversial issues, including San Jacinto Tunnel seepage water, the Fruitvale Judgment and Decree, export of groundwater from the basins, and how to maximize the use of recycled water. As a result of their efforts, a final HSJ Management Plan was completed in 2007, and a Stipulated Judgment was entered with the Superior Court of the State of California for the County of Riverside in April of 2013.
These documents are included in Appendix G.
The HSJ Management Plan:
Limits the amount of water being extracted from the basin free of the replenishment charge to a sustainable yield.
Implements continued recharge of the basin using imported water through the IRRP. Ensures settlement claims by the Soboba Tribe are facilitated and accommodated. Expands the existing water production and water services system to meet future urban growth through the use of imported water recharged into the basin. Protects and/or enhances water quality in the Hemet/San Jacinto Basin. Supports cost-effective water supplies and treatment by the public agencies. Eliminates groundwater overdraft and enhances basin yield. Continues the monitoring program to promote and provide for best management and engineering principles to protect water resources.
Long-term groundwater management includes recharge using Metropolitan replenishment water via permanent facilities through the IRRP Program. An agreement with the Soboba Tribe (the Soboba Settlement Agreement) requires Metropolitan to deliver, on average, 7,500 AFY of water for the next 30 years to EMWD, LHMWD, and the Cities of Hemet and San Jacinto as part of an effort to recharge groundwater in the Hemet/San Jacinto Basin, fulfilling the Soboba Tribe’s water rights and addressing chronic groundwater overdraft. A copy of the Agreement is included in Appendix H.
In 2015, the Canyon Operating Plan, an agreement between EMWD, LHMWD and the Soboba Tribe, was completed as a result of a Memorandum of Understanding (MOU) related to the Soboba Settlement Act. The Canyon Operating Plan provides a framework for operating the Canyon Management Zone in a manner to avoid significant impacts to the Soboba Tribe’s wells and does not reduce the overall supply available in the Hemet/San Jacinto Basin.
The HSJ Management Plan recognizes that the Hemet/San Jacinto Basin is presently in a condition of groundwater overdraft. The Watermaster has implemented long-term base production rights that will eliminate overdraft conditions within the Hemet/San Jacinto Basin, with interim production rights that step down gradually. The long-term adjusted base production right for EMWD is 7,303 AF annually.
In addition to the recharge occurring under the Soboba Settlement Agreement and future recharge under ERRP, EMWD has historically also recharged groundwater in the Hemet/San Jacinto Basin with imported surplus water from Metropolitan since 1990 using temporary facilities constructed under various pilot programs. EMWD and the other three local HSJ agencies are also contributing to the replenishment of the basin by providing recycled water in lieu of groundwater production. The Recycled In-Lieu Program supplies recycled water for agricultural irrigation in-lieu of pumping native groundwater. The project costs are jointly funded by EMWD, LHMWD, and the Cities of Hemet and San Jacinto. Agreements that set limits on groundwater production and provide for a payment of a portion of the operation and maintenance costs have been in place since 2008.
Eastern Municipal Water District 6-11 Urban Water Management Plan
6.2.2.4 Past Five Years
The volume of groundwater pumped by EMWD for the past five years is reported in Table 6-2. The volumes in the table include potable groundwater pumped from the Hemet/San Jacinto Basin and the West San Jacinto Basin as well as brackish groundwater pumped from the West San Jacinto Basin that is treated at EMWD’s desalters before being used as a potable supply. Brackish groundwater volumes reported in Table 6-2 are reported as a desalinated water supply in other supply tables of this UWMP.
EMWD does not use groundwater to meet wholesale demands.
Table 6-2. DWR 6-1R Groundwater Volume Pumped
GROUNDWATER TYPE LOCATION OR BASIN NAME 2016 2017 2018 2019 2020 Alluvial Basin Hemet/San Jacinto Basin portion of the San Jacinto Groundwater Basin (DWR 8-05)
6,171 6,498 6,367 5,213 9,383
Alluvial Basin Pumping of EMWD share of unused Soboba
Settlement Water recharged in the
Hemet/San Jacinto Basin portion of the San
Jacinto Groundwater Basin (DWR 8-05)
3,585 3,864 3,850 1,508 2,625
Alluvial Basin West San Jacinto Basin portion of the San Jacinto Groundwater Basin (DWR 8-05)
4,429 2,908 3,307 1,323 2,402
Alluvial Basin Brackish Groundwater from the West San
Jacinto Basin portion of the San Jacinto
Groundwater Basin (DWR 8-05)
10,254 8,585 8,547 9,801 9,565
TOTAL: 24,439 21,855 22,071 17,845 23,975
1) Brackish groundwater pumped from the West San Jacinto Basin is not a direct supply – it is used to feed desalination facilities. The treated volume of this supply is shown in the other supply tables of this chapter as desalinated water instead of groundwater. 2) EMWD share of unused Soboba Settlement Water is pumped from wells in the Hemet/San Jacinto Basin. However, since this volume originates from water imported under the Soboba Settlement Agreement (and unused by the Soboba Tribe), this supply is shown in other supply tables of this chapter as imported water instead of groundwater.
3) In 2019 EMWD voluntarily reduced groundwater pumping through participation in Metropolitan’s cyclic storage program.
6.2.3 Surface Water
EMWD holds a right to divert up to 5,760 AFY of San Jacinto River flows for recharge and subsequent use from September 1st through June 30th each year. EMWD's diversion and recharge of San Jacinto River surface water to the Canyon Management Zone takes place at EMWD’s Grant Avenue Ponds in the Valle Vista area. EMWD's diverted water is recharged into the groundwater aquifer of the Canyon Groundwater Management Zone and is not used for direct use or sale. The San Jacinto River is an ephemeral river and, consequently, river flows may be insufficient for any diversion at all in some years.
Water that is recharged helps the regional water balance and contributes to the safe yield of the basin.
6.2.4 Stormwater
The San Jacinto Water Harvesting Project allows EMWD to capture stormwater for the purposes of recharging the groundwater aquifers in the Hemet/San Jacinto Basin. The San Jacinto Water Harvesting Project uses the San Jacinto Reservoir as a retention basin for flows rerouted from Riverside County Flood Control and Water Conservation District storm drain Line E. The San Jacinto Water Harvesting Project is currently not monitored; however, at time of construction, the project was estimated to capture 300 to 320 AFY of storm water on a long-term average.
Eastern Municipal Water District 6-12 Urban Water Management Plan A potential stormwater capture component was considered during preliminary design of the Phase I Facilities, but it was not determined to be cost-effective. Later phases of the ERRP project may reevaluate the cost-effectiveness of a stormwater capture component.
6.2.5 Wastewater and Recycled Water
EMWD provides wastewater collection, treatment, and recycled water services throughout its service area. Recycled water is extensively used in EMWD’s service area to meet non-potable demands. The supply of recycled water will continue to increase with EMWD’s population size (though it is also impacted by conservation measures). The four RWRFs that EMWD operates have recently completed expansions. Recycled water is currently used for both municipal and agricultural purposes. Municipal customers use recycled water for landscape irrigation and industrial process water. Agricultural customers use recycled water for irrigation of crops. A portion of agricultural demand for recycled water is provided in-lieu of using groundwater. Due in part to drier conditions and higher demands, EMWD has been able to meet its goal of eliminating discharges and using almost all of the recycled water available within EMWD. Some of the recycled water use offsets demands of existing potable customers.
6.2.5.1 Wastewater Collection, Treatment, and Disposal
EMWD is responsible for all wastewater collection and treatment in its service area. It has four operational RWRFs located throughout EMWD. Inter-connections between the local collection systems serving each treatment plant allow for operational flexibility, improved reliability, and expanded deliveries of recycled water. All of EMWD’s RWRFs produce tertiary effluent, suitable for all permitted uses, including irrigation of food crops and full-body contact. The four RWRFs have a combined capacity of 86,300 AFY as summarized in Table 6-3.
Table 6-3. RWRF Treatment Capacity
FACILITY TREATMENT CAPACITY (AFY)
San Jacinto Valley 15,700
Moreno Valley 17,900
Temecula Valley 25,800
Perris Valley 26,900
TOTAL 86,300
Water Supply Characterization Section 6
Eastern Municipal Water District 6-13 Urban Water Management Plan Table 6-4. DWR 6-2R Wastewater Collected within Service Area in 2020
WASTEWATER COLLECTION RECIPIENT OF COLLECTED WASTEWATER
NAME OF WASTEWATER
COLLECTION AGENCY
WASTEWATER VOLUME
METERED OR ESTIMATED
WASTEWATER VOLUME COLLECTED
FROM UWMP SERVICE AREA IN 2020
(AFY)
NAME OF WASTEWATER AGENCY RECEIVING
COLLECTED WASTEWATER
WASTEWATER TREATMENT PLANT
NAME
WASTEWATER TREATMENT PLANT LOCATED
WITHIN UWMP AREA
WWTP OPERATION CONTRACTED TO A
THIRD PARTY
Eastern Municipal Water District Metered 8,194 Eastern Municipal Water District San Jacinto Valley RWRF Yes No Eastern Municipal Water District Metered 11,507 Eastern Municipal Water District Moreno Valley RWRF Yes No Eastern Municipal Water District Metered 16,090 Eastern Municipal Water District Temecula Valley RWRF Yes No Eastern Municipal Water District Metered 17,282 Eastern Municipal Water District Perris Valley RWRF Yes No TOTAL: 53,073
Table 6-5. DWR 6-3R Wastewater Treatment and Discharge within Service Area in 2020 2020 VOLUMES (AFY)
WASTEWATER TREATMENT
PLANT NAME
DISCHARGE LOCATION
NAME OR IDENTIFIER
DISCHARGE
LOCATION
DESCRIPTION
WASTEWATER
DISCHARGE ID
NUMBER
METHOD OF
DISPOSAL
PLANT TREATS WASTEWATER
GENERATED OUTSIDE THE
SERVICE AREA
TREATMENT
LEVEL
WASTEWATER
TREATED
DISCHARGED
TREATED
WASTEWATER
RECYCLED WITHIN
SERVICE AREA
RECYCLED OUTSIDE
OF SERVICE AREA
INSTREAM FLOW
PERMIT
REQUIREMENT
San Jacinto Valley RWRF Reach 4 Dissipater Temescal Creek River or creek outfall No Tertiary 7,441 436 6,319 Moreno Valley RWRF Reach 4 Dissipater Temescal Creek River or creek outfall No Tertiary 10,451 1,600 8,874 Temecula Valley RWRF Reach 4 Dissipater Temescal Creek River or creek outfall No Tertiary 14,612 1,600 12,407 Perris Valley RWRF Reach 4 Dissipater Temescal Creek River or creek outfall No Tertiary 15,696 3,637 13,327 TOTAL: 48,200 7,273 40,927 0 0
1) Volumes recycled from each facility in the table were estimated based on the proportion of wastewater collected and treated at each plant compared to the total volume of wastewater treated 2) Recycled water sold to RCWD and EVMWD is included in the total volume recycled within EMWD’s service area and not reported separately in DWR Table 6-3 for wholesale. Recycled water deliveries to wholesale customers are distinguished from retail sales in DWR Table 6-4.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-14 Urban Water Management Plan
6.2.5.2 Recycled Water Coordination
As a full-spectrum provider of water, wastewater collection, and treatment and recycled water services, EMWD has been active in developing local and regional plans for expanded water recycling in its service area. EMWD’s first Recycled Water Facilities Master Plan was developed in 1990. In 2009, EMWD completed a Recycled Water System Strategic Plan that provides guidelines for moving forward with recycled water projects. Information from the strategic plan was incorporated into the EMWD Integrated Resource Plan (IRP) to evaluate potential recycled water projects. Both the Recycled Water Facilities Master Plan and the Recycled Water Strategic Plan were updated in 2016. EMWD’s local water recycling plan is also incorporated into the IRWM Plan developed by SAWPA for the Santa Ana River Watershed.
EMWD has worked closely with the Santa Ana Regional Water Quality Control Board in updating local basin plans and developing a long-term salinity management plan to support and ensure compliance with local basin objectives for salinity and nitrogen. EMWD is involved with a variety of local agencies and public interest groups in recycled water planning efforts and has coordinated with these agencies as part of the development of this UWMP. Table 6-6 lists agencies participating in recycled water planning.
Table 6-6. Recycled Water Coordination Agencies
GROUP / AGENCY ROLE
Santa Ana Watershed Project Authority Regional Cooperative Planning Santa Ana Regional Water Quality Control Board Basin Planning / Salinity Management.
Rancho California Water District Facility Planning / Market Development West San Jacinto Groundwater Management
Plan Advisory Board
Plan Review / Public Oversight
Hemet/San Jacinto Groundwater Management Plan Policy Committee (Cities of Hemet and San Jacinto, and Lake Hemet Municipal Water District) Plan Review / Public Oversight
Elsinore Valley Municipal Water District Facility Planning / Market Development EMWD Recycled Water Advisory Committee Plan Review / Public Oversight San Jacinto Watershed Council Plan Review / Public Oversight Lake Elsinore/San Jacinto Watershed Authority Plan Review / Water Quality Metropolitan Water District of Southern California Regional Urban Water Mgmt. Planning / Funding
6.2.5.3 Recycled Water System Description
The majority of recycled water sold is used for agricultural irrigation. A portion of the water sold for agriculture is used in lieu of groundwater, preserving the groundwater basin, and improving water supply reliability. In addition to meeting agricultural demand, recycled water is delivered to municipal customers for landscape irrigation. EMWD also sells recycled water to the California Department of Fish and Wildlife (CDFW) for environmental use within the San Jacinto Wildlife Area and to recreational customers that are comprised of private duck clubs and bird sanctuaries that use recycled water for ponds. EMWD uses existing storage facilities to store water during off peak periods for delivery in peak months and maximize the amount of recycled water sold. EMWD’s recycled water production and distribution facilities are shown in Figure 6-3.
Eastern Municipal Water District 6-15 Urban Water Management Plan Figure 6-3. EMWD Recycled Water System
Water Supply Characterization Section 6
Eastern Municipal Water District 6-16 Urban Water Management Plan
6.2.5.4 Potential, Current, and Projected Recycled Water Uses EMWD’s current and projected retail recycled water sales are summarized in Table 6-7.
EMWD’s wholesale customer category consists of recycled water delivered to other agencies for use in their service areas. EMWD delivers recycled water to EVMWD and RCWD. EMWD’s wholesale current and projected recycled water use is shown in Table 6-8.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-17 Urban Water Management Plan Table 6-7. DWR 6-4R Recycled Water within Service Area in 2020 Name of Supplier Producing (Treating) the Recycled Water: Eastern Municipal Water District Name of Supplier Operating the Recycled Water Distribution System: Eastern Municipal Water District Supplemental Volume of Water Added in 2020: 0
Source of 2020 Supplemental Water: N/A
BENEFICIAL USE TYPE POTENTIAL BENEFICIAL USES
OF RECYCLED WATER
AMOUNT OF POTENTIAL
USES OF RECYCLED WATER
GENERAL DESCRIPTION
OF 2020 USES LEVEL OF TREATMENT 2020 2025 2030 2035 2040 2045 AGRICULTURAL IRRIGATION Tertiary 21,178 22,240 24,640 20,000 20,000 20,000 LANDSCAPE IRRIGATION (EXCLUDES GOLF COURSES) Tertiary 4,275 7,600 10,080 10,600 11,100 11,100 GOLF COURSE IRRIGATION Tertiary 1,457 2,750 3,130 3,500 3,500 3,500 INDUSTRIAL USE Tertiary 0 440 870 1,310 1,310 1,310
RECREATIONAL IMPOUNDMENT Tertiary 1,029 1,400 1,400 1,400 1,400 1,400 WETLANDS OR WILDLIFE HABITAT Tertiary 3,231 4,500 4,500 4,500 4,500 4,500
GROUNDWATER RECHARGE (INDIRECT POTABLE REUSE)
Blend of Tertiary and
Advanced Water Treatment 4,100 4,100 12,300 12,300 12,300 OTHER
Split between agricultural and
landscape usage, proportion to be
determined in future
Tertiary 590 5,390 9,690
OTHER Construction Tertiary 73 300 300 300 300 300
TOTAL: 31,243 43,330 49,020 54,500 59,800 64,100
Note: Some recycled water in EMWD’s storage ponds infiltrates into the ground or evaporates. DWR does not consider this water to be put to beneficial use, and therefore those volumes are not included in the table.
Table 6-8. DWR 6-4W Recycled Water Within Service Area in 2020 NAME OF RECEIVING SUPPLIER OR DIRECT USE BY WHOLESALER LEVEL OF TREATMENT 2020 2025 2030 2035 2040 2045 Elsinore Valley Municipal Water District Tertiary 533 1,120 1,120 1,120 1,120 1,120 Rancho California Water District Tertiary 752 3,650 4,060 4,480 4,480 4,480 TOTAL: 1,285 4,770 5,180 5,600 5,600 5,600
Water Supply Characterization Section 6
Eastern Municipal Water District 6-18 Urban Water Management Plan EMWD’s board has a policy to reuse 100 percent of the recycled water produced. The actual 2020 use is compared to the projections from the 2015 UWMP in Table 6-9 and Table 6-10.
Table 6-9. DWR 6-5R 2015 Recycled Water Use Projection Compared to 2020 Actual BENEFICIAL USE TYPE 2015 PROJECTION FOR 2020 2020 ACTUAL USE Agricultural Irrigation 18,784 21,178
Landscape Irrigation (excludes golf courses) 5,124 4,275 Golf Course Irrigation 2,375 1,457
Commercial Use 300 0
Industrial Use 2,912 0
Recreational Impoundment 1,250 1,029
Wetlands or Wildlife Habitat 4,500 3,231
Other (Construction) 0 73
TOTAL: 35,245 31,243
Note: Some recycled water in EMWD’s storage ponds infiltrates into the ground or evaporates. DWR does not consider this water to be put to beneficial use, and therefore those volumes are not included in the table.
Table 6-10. DWR 6-5W 2015 Recycled Water Use Projection Compared to 2020 Actual
NAME OF RECEIVING SUPPLIER OR DIRECT USE BY
WHOLESALER
2015 PROJECTION FOR 2020 2020 ACTUAL USE
Elsinore Valley Municipal Water District 289 533
Rancho California Water District 1,367 752
TOTAL: 1,656 1,285
6.2.5.5 Actions to Exchange and Optimize Future Recycled Water Use EMWD is considering several options for the expansion of recycled water use in EMWD’s service area.
Historically, EMWD has used recycled water to meet the needs of agricultural and landscape demands.
Water has also been used for environmental purposes at the CDFW’s San Jacinto Wildlife Area. Other proposed special projects include Indirect Potable Reuse (IPR) using recycled water from the San Jacinto Valley RWRF for groundwater recharge.
IPR is included in EMWD’s IRP and modeled under several hydraulic and supply conditions. EMWD’s Recycled Water Strategic Plan and Recycled Water Facilities Master Plan also evaluate the storage and system improvements needed to offset peak demand. Additional storage is not required to fully utilize EMWD’s recycled water supply.
To ensure that recycled water continues to be used to the fullest extent possible, EMWD uses five methods to expand the use of recycled water within its service area. These methods are:
1. Mandatory Recycled Water Use Ordinance – EMWD has adopted an ordinance requiring new and existing customers to use recycled water for appropriate permitted uses when it is available.
This ordinance provides a basis for denying potable water service and providing recycled water for permitted uses.
2. Rate Incentives – Recycled water is currently priced below the cost of potable water for both municipal and agricultural use.
Eastern Municipal Water District 6-19 Urban Water Management Plan
3. Water Supply Assessments – EMWD’s Water Supply Assessments require all major new developments to use recycled water as a condition of service where it is available and permitted.
4. Public Education – EMWD actively promotes the use of recycled water with its water education program. EMWD also places prominent signage at public recycled water use sites promoting the benefits of water recycling.
5. Facilities Financing – EMWD will work with private parties to arrange or provide financing for construction of facilities needed to convert potable demands to recycled water.
EMWD does not have any data to support a projection of how much increased recycled water sales will result from each of the listed methods of encouraging recycled water use. Historically, the low cost of recycled water was the primary inducement for agricultural customers to use recycled water in-lieu of groundwater. However, as municipal customers continue to replace agriculture, it is reasonable to assume that the mandatory provisions of EMWD’s Recycled Water Use Ordinance will play a major role in program expansion.
Table 6-11 summarizes EMWD’s methods to expand future retail recycled water use.
Table 6-11. DWR 6-6R Methods to Expand Future Recycled Water Use
NAME OF ACTION DESCRIPTION
PLANNED
IMPLEMENTATION YEAR
EXPECTED INCREASE OF
RECYCLED WATER USE
Mandatory Recycled
Water Use Ordinance
The ordinance requiring new and existing
customers to use recycled water for
appropriate permitted uses when it is
available
Ongoing
Rate Incentives EMWD prices recycled water below the cost of potable water for both municipal and
agricultural use
Ongoing
Water Supply
Assessments
Assessments condition all major new
developments to use recycled water as a
condition of service where it is available and
permitted
Ongoing
Public Education EMWD has a recycled water public education campaign to promote the benefits of recycled
water
Ongoing
Facilities Financing EMWD helps arrange or provide financing for the construction of facilities needed to convert
potable demands to recycled water
Ongoing
TOTAL:
EMWD does not have data to support a projection of how much increased recycled water sales will result from each of the listed methods of encouraging recycled water use. Historically, the low cost of recycled water was the primary inducement for agricultural customers to use recycled water in-lieu of groundwater. However, as municipal customers continue to replace agriculture, it is reasonable to assume that the mandatory provisions of EMWD’s Recycled Water Use Ordinance will play a major role in program expansion.
Eastern Municipal Water District 6-20 Urban Water Management Plan
6.2.6 Desalinated Water Opportunities
EMWD currently uses groundwater desalination to remove salts from basins in the West San Jacinto Basin. The 250 square mile area experiences increasing water levels due to the inward migration of high total dissolved solids (TDS) groundwater and decreased production. The high TDS groundwater is migrating into the Lakeview portion of the Lakeview/Hemet North Management Zone, which is an area of good quality groundwater. Lowering groundwater levels and removal of saline groundwater is an integral element of the WSJ Management Plan. To address these concerns, EMWD implemented a Groundwater Salinity Management Program. This program currently consists of two desalination facilities owned and operated by EMWD, with a third under construction. These facilities recover high TDS groundwater from the Menifee and Perris South Management Zones, and the Lakeview portion of the Lakeview/Hemet North Management Zone, for potable use. In addition to being a source of potable water, the main role of the desalters is to play a part in managing the groundwater management zones by addressing the migration of brackish groundwater into areas of good quality groundwater.
Desalter wells pump water to an integrated brackish water system that delivers water to the desalination plants where it is treated prior to entering the distribution system. The Menifee Desalter was the first desalter to be built. This facility began producing potable water in 2003. The second desalter, the Perris I Desalter, is located next to the Menifee Desalter in Sun City. This plant began production in 2006 and has a production capacity of approximately 7,500 AFY. Groundwater extraction for use in the desalter program has caused local declines in water levels to date; but the overall West San Jacinto Basin shows groundwater levels that continue to exhibit a stable or upward trend.
High iron and manganese concentrations along with silica irreversibly impact the desalter membranes and have resulted in several brackish groundwater extraction wells being offline. In 2004, an effort was initiated to evaluate alternative technologies for removal of iron and manganese prior to desalination. In late 2013, iron and manganese removal facilities were placed online and allowed EMWD to begin producing from four previously inactive wells.
6.2.7 Water Exchanges and Transfers
EMWD currently relies on Metropolitan for any transfers or exchanges. As a member agency, EMWD benefits from Metropolitan’s efforts to improve supply reliability through transfers and exchanges, as detailed in Metropolitan’s 2020 UWMP.
In addition to relying on Metropolitan, water transfers have been identified as a method of improving reliability, especially during periods of water shortage. The five regional water agencies in the Santa Ana River Watershed have identified a watershed scale project, the Santa Ana Conservation and Conjunctive Use Program (SARCCUP), to store imported water during wet years in order to help meet dry-year demands. The group includes representatives from the following regional water agencies:
EMWD
Inland Empire Utilities Agency
Orange County Water District
San Bernardino Valley Municipal Water District
Western Municipal Water District
The program goals of SARCCUP include:
Providing watershed wide benefits based upon regional collaboration Creating significant new dry year yield (about 70,000 AFY in Phase 1) Increasing resiliency and reliability of water supply Eastern Municipal Water District 6-21 Urban Water Management Plan The SARCCUP includes four separate groundwater banks located in different groundwater basins within the Santa Ana Watershed. The total storage proposed for SARCCUP is about 137,000 AF. Each of the banks is expected to be able to recharge and extract one third of its storage capacity in any year.
The combined extraction capacity is 45,667 AFY. Since the participants are sharing the benefits equally, each agency receives 25 percent (1/4) of the total capacity (IEUA does not currently have any storage capacity), resulting in each of the SARCCUP agencies receiving 11,417 AFY of new dry year yield. This may require transfers, in-lieu, or exchanges between the agencies in both wet and dry years.
EMWD’s SARCCUP facilities include recharge facilities, three production wells, eleven monitoring wells, and associated equipping and ancillary facilities.
In early 2016, SAWPA was formally notified that it had been awarded $64,268,000 by DWR for its Proposition 84 2015 IRWM grant proposal, which included the SARCCUP. From the grant, SAWPA governance designated $55 million for SARCCUP implementation. The SARCCUP Proposition 84 grant award includes the development of a Decision Support Model which was used to help refine the proposed facilities and identified additional facilities that could be included in future phases of the program. The total cost of Phase 1 of the SARCCUP program is approximately $150 million.
Construction of the SARCCUP facilities is on-going and estimated to be complete by 2023. The SARCCUP agencies will continue work to finalize all of the individual agreements needed for operations of the facilities and water purchases. This includes an agreement between the SARCCUP agencies and Metropolitan to allow purchase of water made available under the program and special conditions associated with use of the water during droughts and emergencies. Metropolitan recently authorized agreements associated with SARCCUP to be executed. All agreements associated with SARCCUP have been or will be presented to EMWD’s Board for approval prior to completion of the SARCCUP facilities.
6.2.8 Future Water Projects
EMWD is in the process of updating planning efforts for wastewater, water and recycled water supplies and facilities. EMWD’s expected future water supply projects and programs that have a quantifiable increase in supply and are reasonably expected to be implemented over the next 25 years are summarized in Table 6-12.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-22 Urban Water Management Plan Table 6-12. DWR 6-7R Expected Future Water Supply Projects or Programs
NAME OF FUTURE
PROJECTS OR PROGRAMS
JOINT PROJECT
WITH OTHER
SUPPLIERS AGENCY NAME DESCRIPTION
PLANNED
IMPLEMENTATION
YEAR
PLANNED FOR
USE IN YEAR
TYPE
EXPECTED
INCREASE IN
WATER SUPPLY
TO SUPPLIER
SARCCUP / San Jacinto
Enhanced Recharge and
Recovery Program (ERRP)
Phase I
Yes Inland Empire Utilities Agencies,
Orange County Water District,
San Bernardino Valley Municipal
Water District, Western
Municipal Water District, DWR
Project to be completed in phases
and includes conjunctive use of
groundwater recharge
2025 Multi-Dry Year 7,000 AFY
Perris North Basin
Groundwater
Contamination Prevention
and Remediation Program
Yes SWRCB (funding partner),
WMWD
Combined MV and North Perris GW
Development, and wells near MARB
2023 Average Year 6,450 AFY
Perris II Desalter Yes Army Corps of Engineers Expected to be online mid-2021 2021 Average Year 5,400 AFY Purified Water
Replenishment, Phase I
(IPR)
No N/A Advanced treated recycled water
used to recharge the Hemet/San
Jacinto Basin
2024 Average Year 4,000 AFY
Purified Water
Replenishment, Phase II
(IPR)
No N/A Advanced treated recycled water
used to recharge the Hemet/San
Jacinto Basin - could be increased to
11,000 AFY if brine issues are
resolved
2035 Average Year 8,000 AFY
San Jacinto Enhanced
Recharge and Recovery
Program (ERRP) Phase II
No Project to be completed in phases
and includes conjunctive use of
groundwater recharge
2030 - 2035 Multi-Dry Year 7,500 AFY
San Jacinto Enhanced
Recharge and Recovery
Program (ERRP) Phase III
No Project to be completed in phases
and includes conjunctive use of
groundwater recharge
2040 - 2050 Multi-Dry Year TBD
Water Supply Characterization Section 6
Eastern Municipal Water District 6-23 Urban Water Management Plan
6.2.9 Summary of Existing and Planned Sources of Water
As described throughout this chapter, EMWD has developed a number of local supplies to offset imported water demand including recycled water, groundwater, and desalinated groundwater. EMWD’s planned supply projects will increase supply reliability to mitigate against impacts to supply during dry and multi-dry years.
The following tables summarize EMWD’s retail and wholesale current and projected supplies.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-24 Urban Water Management Plan Table 6-13. DWR 6-8R Actual Water Supplies
2020
WATER SUPPLY ADDITIONAL DETAIL ON WATER SUPPLY ACTUAL VOLUME (AF) WATER QUALITY
Purchased or Imported Water Treated water purchased from Metropolitan 44,726 Drinking Water Purchased or Imported Water Untreated water purchased from Metropolitan, treated at EMWD Filtration Plants 17,584 Drinking Water
Purchased or Imported Water EMWD share of unused Soboba Settlement Water 2,625 Drinking Water Purchased or Imported Water Raw Water for Agriculture 642 Other Non-Potable Water Groundwater (not desalinated) Potable water pumped from the Hemet/San Jacinto Basin portion of the San Jacinto Groundwater Basin (DWR 8-05) 9,383 Drinking Water Groundwater (not desalinated) Potable water pumped from the West San Jacinto Basin portion of the San Jacinto Groundwater Basin (DWR 8-05) 2,402 Drinking Water Groundwater (not desalinated) Brackish water pumped from the West San Jacinto Basin portion of the San Jacinto Groundwater Basin (DWR 8-05) used to supplement the recycled water system
0 Other Non-Potable Water
Desalinated Water - Groundwater Desalinated water pumped from the West San Jacinto Basin portion of the San Jacinto Groundwater Basin (DWR 8-05) 7,310 Drinking Water Recycled Water Includes Storage Pond Incidental Recharge / Evaporation 39,642 Other Non-Potable Water TOTAL: 124,314
Table 6-14. DWR 6-8W Actual Water Supplies
2020
WATER SUPPLY ADDITIONAL DETAIL ON WATER SUPPLY ACTUAL VOLUME (AF) WATER QUALITY Purchased or Imported Water Treated Water purchased from Metropolitan 15,008 Drinking Water Purchased or Imported Water Raw Water purchased from Metropolitan 14,909 Other Non-Potable Water Purchased or Imported Water Soboba Settlement Water 6,467 Other Non-Potable Water Recycled Water 1,285 Recycled Water
TOTAL: 37,669
Water Supply Characterization Section 6
Eastern Municipal Water District 6-25 Urban Water Management Plan Table 6-15. DWR 6-9R Projected Water Supplies
PROJECTED WATER SUPPLY (AFY)
REASONABLY AVAILABLE VOLUME
WATER SUPPLY ADDITIONAL DETAIL ON WATER SUPPLY 2025 2030 2035 2040 2045 Purchased or Imported Water Metropolitan Treated/ Untreated 66,447 72,147 70,247 74,747 78,847 Groundwater (not desalinated) Pumped from the Hemet/San Jacinto Basin 7,303 7,303 7,303 7,303 7,303 Groundwater (not desalinated) Pumped from the West San Jacinto Basin 11,450 11,450 11,450 11,450 11,450 Desalinated Water - Groundwater Desalinated water from the West San Jacinto Basin 13,400 13,400 13,400 13,400 13,400
Recycled Water Excludes Storage Pond Incidental Recharge / Evaporation 43,330 49,020 54,500 59,800 64,100
Other Purified Water Replenishment (IPR) 4,000 4,000 12,000 12,000 12,000 TOTAL: 145,930 157,320 168,900 178,700 187,100
The projected recycled water supply total is inclusive of recycled water that is required to be recharged as part of EMWD’s planning Purified Water Replenishment (PWR) Program – an Indirect Potable Reuse project with multiple phases. This recharge volume is reported under the groundwater recharge line item in Table 6-7 (DWR 6-4R) as a demand/beneficial use of EMWD’s recycled water supply. The projected supply total under the “other” category reflects the volume of water produced by PWR that will be used to meet demands on EMWD’s potable water system.
Table 6-16. DWR 6-9W Projected Water Supplies
PROJECTED WATER SUPPLY (AFY)
REASONABLY AVAILABLE VOLUME
WATER SUPPLY ADDITIONAL DETAIL ON WATER SUPPLY 2025 2030 2035 2040 2045 Purchased or Imported Water Metropolitan Treated / Untreated 50,700 44,900 46,900 49,200 51,300 Purchased or Imported Water Soboba Settlement Water 7,500 7,500 7,500 7,500 7,500 Recycled Water 4,770 5,180 5,600 5,600 5,600
TOTAL: 62,970 57,580 60,000 62,300 64,400
Soboba Settlement requires Metropolitan to provide a long term annual average recharge of 7,500 AFY - any portion unused by the Soboba Tribe is split for use by EMWD, LHMWD, City of Hemet, and the City of San Jacinto
Water Supply Characterization Section 6
Eastern Municipal Water District 6-26 Urban Water Management Plan
6.2.10 Climate Change Effects
EMWD has considered the impact of climate change on water supplies as part of its long-term strategic planning. Climate change has the potential to affect not only local demand and supplies, but to reduce the amount of water available for import. Warmer temperatures will lead to higher demand for water within EMWD’s service area and throughout California. An increase in intensity and frequency of extreme weather events can impact both local and imported supplies. EMWD gets approximately half of its retail supply from Metropolitan which imports water from the Bay-Delta system through the SWP and the Colorado River through the CRA. Potential impacts to these imported supplies are discussed in Metropolitan’s UWMP.
In its climate change vulnerability assessment for the Santa Ana River Watershed, the SAWPA Region identified key supply vulnerabilities to climate change. The vulnerabilities identified in the assessment related to EMWD’s supplies include:
Reduction in the Sierra Nevada snowpack;
Increased strain on imported supplies
Inability to meet water demands during drought
Shortage of long-term water storage
One of the outcomes of climate change could be more frequent limitations on imported supplies. To limit the impact of climate change, EMWD’s long-term planning focuses on the development of reliable local resources and the implementation of water use efficiency. This includes the full utilization of recycled water, which is a highly resilient supply source, and the proactive management, monitoring, and recharge of local groundwater basins to ensure supply reliability even during potential periods of severe hydrologic conditions. EMWD is also focused on reducing demand for water supplies, especially outdoors. Increasing the use of local resources and reducing the need for imported water has the dual benefit of not only improving water supply reliability, but reducing the energy required to import water to EMWD’s service area.
6.3 Energy Intensity
EMWD has calculated the energy intensity of its water management operations using the approach recommended by DWR. EMWD has self-regenerated renewable energy for both the potable and recycled water systems. This renewable energy is provided through solar generation and use of digester gas. The energy generated is used for the treatment processes and helps reduce the need for purchased power. The energy use for calendar year 2019 for the two systems are shown in Table 6-17 and Table 6-18.
Water Supply Characterization Section 6
Eastern Municipal Water District 6-27 Urban Water Management Plan Table 6-17. DWR Table O-1-1B Energy Intensity of Water Operations Urban Water Supplier: Eastern Municipal Water District
Water Delivery Product (If delivering more than one type of product use Table O-1C): Other
TABLE O-1B: RECOMMENDED ENERGY REPORTING - TOTAL UTILITY APPROACH Start Date for Reporting Period: 1/1/2019
End Date for Reporting Period: 12/31/2019 URBAN WATER SUPPLIER OPERATIONAL CONTROL Is upstream embedded in the values reported?
SUM OF ALL WATER
MANAGEMENT PROCESSES NON-CONSEQUENTIAL HYDROPOWER
Water Volume Units Used TOTAL UTILITY HYDROPOWER NET UTILITY Volume of Water Entering Process (volume unit) 119205 0 119205 Energy Consumed (kWh) 53763864 0 53763864
ENERGY INTENSITY (KWH/VOLUME) 451.0 0.0 451.0
QUANTITY OF SELF-GENERATED RENEWABLE ENERGY
0 kWh
DATA QUALITY (ESTIMATE, METERED DATA, COMBINATION OF ESTIMATES AND METERED DATA) Combination of Estimates and Metered Data
DATA QUALITY NARRATIVE:
NARRATIVE:
Water Supply Characterization Section 6
Eastern Municipal Water District 6-28 Urban Water Management Plan Table 6-18. DWR Table O-2 Energy Intensity of Wastewater and Recycled Water Operations TABLE O-2: RECOMMENDED ENERGY REPORTING - WASTEWATER & RECYCLED WATER Start Date for Reporting Period: 1/1/2019
End Date for Reporting Period: 12/31/2019 URBAN WATER SUPPLIER OPERATIONAL CONTROL
WATER MANAGEMENT PROCESS
Is upstream embedded in the values reported? COLLECTION /
CONVEYANCE TREATMENT DISCHARGE / DISTRIBUTION TOTAL
Volume of Water Units Used AF
Volume of Wastewater Entering Process (volume units selected above) 48,415 48,415 6,120 48,415 Wastewater Energy Consumed (kWh) 17,014,851 54,199,173 0 71,214,024 WASTEWATER ENERGY INTENSITY (KWH/VOLUME) 351.4 1,119.5 0.0 1,470.9 Volume of Recycled Water Entering Process (AF) 0 0 42,300 42,300 Recycled Water Energy Consumed (kWh) 0 0 7,415,833 7,415,833 RECYCLED WATER ENERGY INTENSITY (KWH/VOLUME) 0.0 0.0 175.3 175.3
QUANTITY OF SELF-GENERATED RENEWABLE ENERGY RELATED TO RECYCLED WATER AND WASTEWATER OPERATIONS Wastewater system: 8,756,363 kWh of self-generated solar (included in use above) Recycled water system: 2,213,990 kWh of self-generated solar (included in use above) Wastewater system: 21,486,638 kWh of digester gas generation (included in use above)
DATA QUALITY (ESTIMATE, METERED DATA, COMBINATION OF ESTIMATES AND METERED DATA) Combination of Estimates and Metered Data
DATA QUALITY NARRATIVE:
NARRATIVE:
7-1
Water Service Reliability and
Drought Risk Assessment
This chapter presents a comparison of EMWD’s expected supplies and demands during future conditions
Each of EMWD supply’s sources has potential constraints that could affect future reliability. This section describes these potential constraints. EMWD’s diverse supply portfolio is expected to allow it to maintain reliable water service for the next 25 years.
IN THIS SECTION
Water Service
Reliability
Assessment
Drought Risk
Assessment
Water Service Reliability and Drought Risk Assessment Section 7 Eastern Municipal Water District 7-2 Urban Water Management Plan
7.1 Water Service Reliability Assessment
This section presents an assessment of the expected reliability of EMWD’s sources of supply.
7.1.1 Imported Water Reliability
Approximately half of EMWD’s current and projected retail water supplies are imported through Metropolitan. EMWD also imports water from Metropolitan to augment the supplies of its wholesale customers. Metropolitan’s resource management strategy depends on improving the reliability and availability of imported water supplies, increasing local storage and developing local resources. In Metropolitan’s 2020 UWMP, it evaluated challenges to supply reliability, including drought conditions, environmental regulations, water quality concerns, infrastructure vulnerabilities to natural disaster, and responses to variations in water supply availability from year to year.
Flexible and adaptive regional planning strategies are required. Metropolitan’s continued progress in developing a diverse resource portfolio will allow it to meet the region’s water supply needs.
Metropolitan’s 2020 UWMP details its planning initiatives and based on these efforts concludes that with the storage and transfer programs developed, Metropolitan has sufficient supply capabilities to meet the expected demands of its member agencies from 2020 through 2045 under normal, historic single-dry and historic multiple-dry year conditions. EMWD is relying on Metropolitan’s 2020 UWMP to evaluate the reliability of imported supplies and the amount of imported water which will be available in EMWD’s service area during normal, single dry, and multiple dry water year periods.
In February 2008, Metropolitan adopted its Water Supply Allocation Plan (WSAP) to allocate water based on need during periods of mandatory imported water allocations throughout the region. The WSAP contains a specific formula and methodology to determine member agency supply allocations.
Metropolitan works with member agencies to periodically review the WSAP formula and make adjustments as needed. The most recent revision to the WSAP was completed in December of 2014.
The plan takes into consideration:
The impact on retail customers and the economy
Population and growth
Changes and/or loss of local supply
Reclamation and recycling
Conservation
Investment in local resources
In the event allocation is required, the WSAP establishes base period demands and then adjusts them for population growth and changes in local supply; it then calculates the water supply allocation for each member agency based on the calculated needs. Regional shortages are defined in 10 stages and credits are given for conservation and investment in local extraordinary supplies. These credits would potentially reduce a member agency’s cutback under an allocation. EMWD currently expects that its contribution to SARCCUP would qualify for the extraordinary supply credit. It is Metropolitan’s intent to prevent member agencies from experiencing retail shortages that are greater than corresponding regional shortages.
The probability of Metropolitan meeting dry year demands is dependent on the amount of water Metropolitan has in its reserves. Under some conditions, Metropolitan may choose to implement the WSAP proactively to preserve storage reserved for a future year. Accordingly, a Metropolitan allocation does not necessarily represent a Metropolitan shortage, and member agencies are not prohibiting from Water Service Reliability and Drought Risk Assessment Section 7 Eastern Municipal Water District 7-3 Urban Water Management Plan making purchases over their allocated volume. However, any purchases made over the allocation would be subject to a surcharge.
7.1.2 Groundwater and Desalinated Groundwater Supply Reliability Protecting the available groundwater supply is an integral component of EMWD’s planning efforts.
EMWD is actively working with other agencies and groups to ensure that groundwater will be a reliable resource far into the future. To improve groundwater reliability EMWD and other groundwater producers are reducing production of native groundwater and using imported water to supplement natural recharge.
EMWD and the other participants in the Hemet/San Jacinto area have agreed to reduce production.
The long-term adjusted base production right for EMWD is 7,303 AFY.
Production over the base production right requires basin replenishment. There is a long-term agreement in place for Metropolitan to provide an average of 7,500 AFY for replenishment in the Hemet/San Jacinto Basin. This water is to be used by the Soboba Tribe with any unused water available to the other municipal producers in the Hemet/San Jacinto Basin, as described in Chapter 6.
The municipal producers are allowed to carry over quantities of both unused replenishment water and adjusted base production rights to future years. EMWD has also purchased carry over credits from other municipal producers in the basin. At the end of 2020, EMWD’s carry over credit balance in the Hemet/San Jacinto Basin was over 25,000 acre-feet.
EMWD has plans to expand recharge through the ERRP.
Potable groundwater production from the West San Jacinto Basin will increase once the Perris North Basin Groundwater Contamination Prevention and Remediation Program is completed, and brackish groundwater production will increase as EMWD’s desalter program comes online in 2021.
Desalination of groundwater from the West San Jacinto Basin increases groundwater supply reliability in the San Jacinto Basin by helping manage increasing groundwater levels that are due to decreased production. Desalination also prevents migration of brackish groundwater that could otherwise contaminate potable groundwater supplies.
7.1.3 Recycled Water Supply Reliability
EMWD has established a strategic goal of maximizing beneficial reuse of recycled water and frequently reuses 100 percent of the wastewater generated in its service area as recycled water. Because recycled water supply is dependent on wastewater generation and not precipitation, it is considered a nearly 100 percent reliable, drought-resistant supply. EMWD also has optimization efforts underway to improve operation of the recycled water system.
7.1.4 Water Quality Constraints on Water Sources
Promoting and protecting the quality of its water resources is a vital part of EMWD’s planning and operations. Water quality constraints for imported water and groundwater are part of the criteria used to evaluate the value of a proposed project. EMWD does not anticipate a reduction in supply reliability due to water quality constraints. Contaminants of concern may require treatment or blending, but long-term supply planning indicates that the quantity of available water will not be diminished from projected levels due to quality.
Eastern Municipal Water District 7-4 Urban Water Management Plan
7.1.4.1 Imported Water Quality
As part of the Metropolitan IRP and other planning efforts, Metropolitan has concentrated on maintaining the quality of source water and developing management programs that protect and enhance water quality. Metropolitan has two water sources: the CRA and the SWP. Metropolitan responds to water quality concerns by concentrating on protecting the quality of source water and developing water management programs that maintain and enhance water quality. Based on current knowledge, the only water quality threat to Metropolitan water supplies that may require future treatment is the potential for increased salinity levels.
To date, Metropolitan has not identified any other water quality issues that cannot be mitigated.
Increased salinity may impact the amount of water available in the future. If additional treatment is required, Metropolitan could experience a loss of up to 15 percent of the water processed. Since only a small portion of the total water supply would be treated and blended with the remaining unprocessed water, there is no significant risk to Metropolitan’s water supply availability.
Additional information and analysis of water quality is included in Metropolitan’s 2020 UWMP.
7.1.4.2 Groundwater and Desalinated Groundwater Quality EMWD has an extensive and proactive groundwater monitoring program that includes collecting, compiling and analyzing data related to groundwater quality. There are no known significant threats to EMWD’s groundwater supply that cannot be mitigated by treatment or blending and EMWD does not anticipate a significant loss of supply due to water quality issues. EMWD may occasionally alter operational patterns to support treatment or blending.
EMWD protects groundwater supplies from potential water quality risks including contamination from salinity, nitrates, and chlorinated and other volatile organic compounds. Other contaminants have also been found in local groundwater sources at levels exceeding PHGs and may require additional treatment in the future.
Salinity and Nitrates
In partnership with other agencies, EMWD is responsible for the protection and preservation of local groundwater under the authority of the HSJ Management Plan and the WSJ Management Plan. Salinity and nitrate levels in groundwater increase due to agricultural activities, urban use, and recycled water use. EMWD monitors the salinity and nitrate levels in local basins as part of the groundwater management plan. EMWD also evaluates the ambient water quality for the basins and the data indicates that the basins are slowly increasing in concentrations of salinity and nutrients. Typically, the groundwater water quality meets the safe drinking water standards for salinity and nutrients and can be used directly. Where the salt and nutrients exceed the drinking water standards, EMWD addresses water quality through the efforts of the desalination program. Two operational desalination plants and one planned plant are part of EMWD’s effort to remove salts and nutrients from the brackish water supply. In addition to supplying a source of drinking water, desalination also prevents the migration of brackish groundwater into other management zones.
Chlorinated Solvents and Other Volatile Organic Compounds In the WSJ Management Plan, chlorinated solvents and other volatile organic compounds have been found in amounts that exceed PHGs. Chlorinated solvents are volatile organic compounds (VOCs) that contain chlorine. In general, they are used in aerospace and electronics industries, dry-cleaning, and degreasing industries. EMWD is vigilant in protecting groundwater basins from VOC contamination by closely monitoring the construction of new businesses such as gas stations and manufacturing within the vicinity of production wells. Through the review of proposed new development, EMWD works with local land agencies to ensure that groundwater quality is protected.
Water Service Reliability and Drought Risk Assessment Section 7 Eastern Municipal Water District 7-5 Urban Water Management Plan Arsenic
Arsenic is a naturally occurring compound found in rocks, soil, water and air. Arsenic has been found in several of EMWDs wells at levels that range from not detected to 12 µg/L (2015 data). In 2006, the MCL for arsenic in domestic water supplies was lowered to 10 µg/L by the USEPA. Currently, high arsenic concentration sources are blended with lower concentration sources to comply with the MCL.
Should California lower the State’s MCL below the federal level, some of EMWD’s production wells could be impacted, requiring additional treatment facilities to utilize these wells.
Pharmaceuticals and Personal Care Products
Pharmaceuticals and Personal Care Products (PPCPs) are constituents of emerging concern and EMWD has been and will continue to be proactive in addressing water quality concerns that arise.
EMWD participates in the USEPA’s Unregulated Contaminant Monitoring Rule program, which recently has included monitoring for PPCPs.
Per-and Polyfluoroalkyl Substances
Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals that includes PFOA, PFOS, GenX and many other chemicals. Historical activities at the former March Air Force Base have been identified as sources of PFOA and PFOS contamination in the groundwater. PFOA and PFOS have been detected at levels that exceed the current Division of Drinking Water notification levels in the Perris North and Perris South subbasins; however, groundwater extracted from these basins for drinking water that exceed the notification levels is treated to reduce PFOA and PFOS concentrations to below the notification levels. Should California lower notification levels, establish MCLs that are lower than current notification levels, or add notification levels/MCLs for additional PFAS compounds, some of EMWD’s production wells could be impacted, requiring additional treatment facilities to utilize these wells.
7.1.4.3 Recycled Water Quality
EMWD has an extensive recycled water program and this supply is used for landscape, agricultural, and environmental uses. It significantly offsets non-potable water demands throughout the EMWD.
Water quality issues with recycled water include high salinity, nutrients, and PPCPs.
Salinity and Nutrient Management
One of the challenges with the use of the recycled water is that it has salinity and nutrient concentrations that exceed the Santa Ana Region’s basin plan objectives. EMWD has a Salinity and Nutrient Management Program (SNMP) specifically designed to evaluate and address the salinity and nutrient impacts that may be associated with the use of recycled water. The SNMP determines whether or not the recycled water complies with the basin plan water quality objectives. In the basins where the recycled water does not meet the water quality objectives, the SNMP determines the excess loading to the basin and describes EMWD’s offset mitigation measure to address the added salt and nutrient load.
Because recycled water offers a great benefit to the region and reduces the demand on the potable water system for non-potable water purposes, the basin plan allows the excess salt and nutrient load to be mitigated. The SNMP describes the approved offset mitigation measures utilized by EMWD. This offset program ensures that for every excess pound of salt or nutrient added to the basin, a corresponding pound is removed by desalinization wells or mitigated by replenishment with higher quality water.
Pharmaceuticals and Personal Care Products
PPCPs are a source of concern in EMWD’s recycled water. In 2008, EMWD participated with SAWPA to form a Task Force to develop a plan to characterize emerging constituents (ECs) throughout the region. In 2009, the Task Force presented an acceptable monitoring plan to the Santa Ana Regional Eastern Municipal Water District 7-6 Urban Water Management Plan Water Quality Control Board to monitor specific ECs. The plan included monitoring by SAWPA members to evaluate EC levels in wastewater effluent, local receiving streams and other raw water supplies imported into the area. Samples were collected in the spring of 2010 and a final report was prepared by SAWPA in late 2010. The results indicated the presence of some ECs at trace levels (parts per trillion) in the wastewater effluent that are consistent with the results from other wastewater agencies. EMWD tests for ECs in recycled water every three years, and monitors efforts towards the development of regulations.
7.1.5 Year Type Characterization
Since approximately half of EMWD’s service area supplies are imported from Metropolitan, EMWD’s normal, single-dry, and multi-dry year conditions are based on the same years used by Metropolitan in its 2020 UWMP. As described in Metropolitan’s UWMP, these years are based on hydrological conditions impacting SWP supplies. EMWD’s single-dry year condition is represented by 1977 hydrology and the multiple-dry year condition is represented by 1988-1992 hydrology. EMWD’s average year is represented by the average of the 1922-2017 hydrologic conditions.
The base years for EMWD’s retail and wholesale supplies are identified in Table 7-1 and Table 7-2.
Table 7-1. DWR 7-1R Basis for Water Year Data (Reliability Assessment) - AVAILABLE SUPPLY IF YEAR TYPE REPEATS
YEAR
TYPE
BASE
YEAR
VOLUME
AVAILABLE
PERCENT OF
AVERAGE SUPPLY
AVERAGE YEAR 1922 - 2017 100%
SINGLE-DRY YEAR 1977 100%
CONSECUTIVE DRY YEARS 1ST YEAR 1988 100%
CONSECUTIVE DRY YEARS 2ND YEAR 1989 100%
CONSECUTIVE DRY YEARS 3RD YEAR 1990 100%
CONSECUTIVE DRY YEARS 4TH YEAR 1991 100%
CONSECUTIVE DRY YEARS 5TH YEAR 1992 100%
Note: Because EMWD is able to purchase additional water from Metropolitan to meet demands, percent of supply is 100% or greater.
Water Service Reliability and Drought Risk Assessment Section 7 Eastern Municipal Water District 7-7 Urban Water Management Plan Table 7-2. DWR 7-1W Basis for Water Year Data (Reliability Assessment) - AVAILABLE SUPPLY IF YEAR TYPE REPEATS
YEAR
TYPE
BASE
YEAR
VOLUME
AVAILABLE
PERCENT OF
AVERAGE SUPPLY
AVERAGE YEAR 1922 - 2017 100%
SINGLE-DRY YEAR 1977 100%
CONSECUTIVE DRY YEARS 1ST YEAR 1988 100%
CONSECUTIVE DRY YEARS 2ND YEAR 1989 100%
CONSECUTIVE DRY YEARS 3RD YEAR 1990 100%
CONSECUTIVE DRY YEARS 4TH YEAR 1991 100%
CONSECUTIVE DRY YEARS 5TH YEAR 1992 100%
Note: Because EMWD is able to purchase additional water from Metropolitan to meet demands, percent of supply is 100% or greater.
7.1.6 Water Service Reliability
Based on the information provided in the Metropolitan UWMP, EMWD has the ability to meet current and projected water demands through 2045 during normal, historic single-dry and historic multiple-dry year periods using imported water from Metropolitan with existing supply resources. Planned local supplies will complement imported supplies and improve reliability for EMWD and the region.
EMWD will continue to rely on imported water from Metropolitan as the main source of supply for its retail and wholesale customers, yet recognizes the need to increase local supplies and water conservation to manage supply and demand. Metropolitan evaluated challenges to supply reliability in its UWMP, including drought conditions, environmental regulations, water quality concerns, and infrastructure vulnerability. Metropolitan has undertaken several planning initiatives to assess and prepare for vulnerabilities including its Integrated Resources Plan, its Water Surplus and Drought Management Plan, and its Water Supply Allocation Plan (WSAP). Additionally, Metropolitan has developed dry-year storage through groundwater and surface water reservoirs that help meet dry-year demands. Based on the information provided in Metropolitan’s UWMP, Metropolitan has sufficient supply capabilities to meet the expected demands of its member agencies from 2020 through 2045 under normal, historic single-dry and historic multiple-dry year conditions.
If another multiple-dry year period were to occur over the next five years, Metropolitan could declare an allocation. EMWD is able to respond to a potential allocation through implementation of its WSCP and its balance of carry over credits in the Hemet/San Jacinto Management Plan Area. EMWD has the ability to meet current and projected water demands through 2045 under normal, historic single-dry and historic multiple-dry year conditions using a combination of imported water from Metropolitan and existing local supply resources.
7.1.6.1 Water Service Reliability – Normal Year
Table 7-3 and Table 7-4 demonstrate that EMWD will have sufficient supplies to meet both retail and wholesale demands from 2020 to 2045 under average year conditions.
Eastern Municipal Water District 7-8 Urban Water Management Plan Table 7-3. DWR 7-2R Normal Year Supply and Demand Comparison - 2025 2030 2035 2040 2045
Supply Totals
From Table 6-9R
145,930 157,320 168,900 178,700 187,100
Demand Totals
From Table 4-3R
145,930 157,320 168,900 178,700 187,100
DIFFERENCE: 0 0 0 0 0
Table 7-4. DWR 7-2W Normal Year Supply and Demand Comparison - 2025 2030 2035 2040 2045
Supply Totals
From Table 6-9W
62,970 57,580 60,000 62,300 64,400
Demand Totals
From Table 4-3W
62,970 57,580 60,000 62,300 64,400
DIFFERENCE: 0 0 0 0 0
7.1.6.2 Water Service Reliability – Single Dry Year
The single-dry year represents the year with the lowest water supply available to the agency. EMWD’s single-dry year is represented using 1977 hydrologic conditions. EMWD has developed programs to help accommodate increases in demand during dry years including the planned ERRP project which would allow EMWD to rely more heavily on groundwater supplies to meet demand in dry years.
Additionally, EMWD could import more water from Metropolitan to meet increases in demand. Table 7-5 and Table 7-6 demonstrate that EMWD will have sufficient supplies to meet both retail and wholesale demands from 2020 to 2045 under single-dry year conditions.
Table 7-5. DWR 7-3R Single Dry Year Supply and Demand Comparison - 2025 2030 2035 2040 2045
Supply Totals 151,130 162,820 174,700 184,700 193,300
Demand Totals 151,130 162,820 174,700 184,700 193,300
DIFFERENCE: 0 0 0 0 0
Water Service Reliability and Drought Risk Assessment Section 7 Eastern Municipal Water District 7-9 Urban Water Management Plan Table 7-6. DWR 7-3W Single Dry Year Supply and Demand Comparison - 2025 2030 2035 2040 2045
Supply Totals 64,770 59,080 61,600 63,600 65,900
Demand Totals 64,770 59,080 61,600 63,600 65,900
DIFFERENCE: 0 0 0 0 0
7.1.6.3 Water Service Reliability – Five Consecutive Dry Years The multiple-dry year period represents the lowest average water supply availability to the agency for a consecutive five-year period. EMWD’s multiple-dry year period is represented using hydrologic conditions similar to the 1988-1992 period.
As demonstrated in Table 7-7 and Table 7-8, EMWD will have sufficient supplies to meet both retail and wholesale demands from 2020 to 2045 under multiple-dry year conditions. During dry periods, EMWD would be able to utilize stored groundwater from the proposed ERRP project or import more water from Metropolitan to meet demands, if needed.
Eastern Municipal Water District 7-10 Urban Water Management Plan Table 7-7. DWR 7-4R Multiple Dry Years Supply and Demand Comparison - - 2025 2030 2035 2040 2045
First Supply Totals 151,130 162,820 174,700 184,700 193,300 Year Demand Totals 151,130 162,820 174,700 184,700 193,300 - DIFFERENCE: 0 0 0 0 0
Second Supply Totals 132,700 143,300 153,700 162,500 170,300 Year Demand Totals 132,700 143,300 153,700 162,500 170,300 - DIFFERENCE: 0 0 0 0 0
Third Supply Totals 134,900 145,500 155,500 164,100 171,900 Year Demand Totals 134,900 145,500 155,500 164,100 171,900 - DIFFERENCE: 0 0 0 0 0
Fourth Supply Totals 137,100 147,600 157,400 165,700 173,500 Year Demand Totals 137,100 147,600 157,400 165,700 173,500 - DIFFERENCE: 0 0 0 0 0
Fifth Supply Totals 140,200 150,800 160,000 168,000 175,800 Year Demand Totals 140,200 150,800 160,000 168,000 175,800 - DIFFERENCE: 0 0 0 0 0
Water Service Reliability and Drought Risk Assessment Section 7 Eastern Municipal Water District 7-11 Urban Water Management Plan Table 7-8. DWR 7-4W Multiple Dry Years Supply and Demand Comparison - - 2025 2030 2035 2040 2045
First Supply Totals 64,770 59,080 61,600 63,600 65,900
Year Demand Totals 64,770 59,080 61,600 63,600 65,900
- DIFFERENCE: 0 0 0 0 0
Second Supply Totals 63,200 59,100 61,400 63,400 65,600 Year Demand Totals 63,200 59,100 61,400 63,400 65,600
- DIFFERENCE: 0 0 0 0 0
Third Supply Totals 62,100 59,600 61,800 63,900 66,000
Year Demand Totals 62,100 59,600 61,800 63,900 66,000
- DIFFERENCE: 0 0 0 0 0
Fourth Supply Totals 61,000 60,100 62,200 64,300 66,400 Year Demand Totals 61,000 60,100 62,200 64,300 66,400
- DIFFERENCE: 0 0 0 0 0
Fifth Supply Totals 59,800 60,600 62,600 64,700 66,900
Year Demand Totals 59,800 60,600 62,600 64,700 66,900
- DIFFERENCE: 0 0 0 0 0
Note: Includes 7,500 AFY of Soboba Settlement Recharge.
Eastern Municipal Water District 7-12 Urban Water Management Plan
7.2 Drought Risk Assessment
EMWD anticipates it will have enough supplies to meet demands under all water year conditions from 2020 through 2045. To supplement Metropolitan imported sources and improve reliability, EMWD has several local resource programs. Production of local groundwater has been a source of supply for EMWD’s service area for decades, but overproduction of groundwater has led to a need for groundwater management. Native production is limited and plans are in place to recharge local ground water basins to increase supply reliability. Desalination of high TDS groundwater also provides a reliable local supply of water.
Recycled water production and sales reduce the demand for imported water and provide a sustainable supply. EMWD’s continued investment in improved facilities will continue to grow the market for recycled water, and innovative planning and recycled water management will allow EMWD’s recycled water supply to bring an even greater benefit to the service area.
EMWD also has several planned projects that will increase regional supply reliability by increasing local supplies and decreasing demands for imported water from Metropolitan. These projects include increasing local groundwater banking through the ERRP, expanding the desalter program with the Perris II Desalter, and full utilization of recycled water through implementation of IPR.
In addition to the development of local resources, EMWD aggressively promotes the efficient use of water. Through the implementation of local ordinances, conservation programs and an innovative tiered pricing structure, EMWD is reducing demands on retail accounts. Reducing demands allows existing and proposed water supplies to stretch farther and reduces the potential for water supply shortages.
The California Water Code requires suppliers to prepare a Five-Year Drought Risk Assessment (DRA) to assess their ability to meet demands if the next five years are dry.
The results of the DRA are summarized in Table 7-9.
Water Service Reliability and Drought Risk Assessment Section 7 Eastern Municipal Water District 7-13 Urban Water Management Plan Table 7-9. DWR 7-5 Five-Year Drought Risk Assessment
2021 Gross Water Use 177,900
Total Supplies 177,900
Surplus/Shortfall without WSCP Action 0
Planned WSCP Actions (Use Reduction and Supply Augmentation) WSCP (Supply Augmentation Benefit) 0
WSCP (Use Reduction Savings Benefit) 0
Revised Surplus/Shortfall 0
Resulting Percent Use Reduction from WSCP Action 0%
2022 Gross Water Use 185,400
Total Supplies 185,400
Surplus/Shortfall without WSCP Action 0
Planned WSCP Actions (Use Reduction and Supply Augmentation) WSCP (Supply Augmentation Benefit)
WSCP (Use Reduction Savings Benefit) 14,900
Revised Surplus/Shortfall 0
Resulting Percent Use Reduction from WSCP Action 8%
2023 Gross Water Use 194,400
Total Supplies 194,400
Surplus/Shortfall without WSCP Action 0
Planned WSCP Actions (Use Reduction and Supply Augmentation) WSCP (Supply Augmentation Benefit) 0
WSCP (Use Reduction Savings Benefit) 15,400
Revised Surplus/Shortfall 0
Resulting Percent Use Reduction from WSCP Action 8%
2024 Gross Water Use 209,400
Total Supplies 209,400
Surplus/Shortfall without WSCP Action 0
Planned WSCP Actions (Use Reduction and Supply Augmentation) WSCP (Supply Augmentation Benefit) 0
WSCP (Use Reduction Savings Benefit) 16,000
Revised Surplus/Shortfall 0
Resulting Percent Use Reduction from WSCP Action 8%
2025 Gross Water Use 217,500
Total Supplies 217,500
Surplus/Shortfall without WSCP Action 0
Planned WSCP Actions (Use Reduction and Supply Augmentation) WSCP (Supply Augmentation Benefit) 0
WSCP (Use Reduction Savings Benefit) 16,500
Revised Surplus/Shortfall 0
Resulting Percent Use Reduction from WSCP Action 8%
For each year: “revised surplus/shortfall” is still 0 AF because WSCP savings result in less purchases from Metropolitan.
8-1
Water Shortage
Contingency Plan
For the 2020 UWMP reporting cycle, EMWD prepared a Water Shortage Contingency Plan (WSCP). The WSCP is an appendix to this document and is being adopted separately by the EMWD Board of Directors.
Adopting the UWMP as a separate document will allow EMWD to make adjustments as needed without triggering the need to amend and re-adopt the UWMP.
This chapter has been retained in the UWMP to maintain
consistency with the chapter numbering defined in the DWR Guidebook.
IN THIS SECTION
The WSCP is
attached as
Appendix I.
Water Shortage Contingency Plan Section 8
Eastern Municipal Water District 8-2 Urban Water Management Plan
8.1 WSCP Overview
The WSCP includes a description of the shortage response actions that EMWD could implement to close a gap between supply and demand. It was developed and adopted as a separate document from the UWMP so that it can be modified if needed during the next five years.
Eastern Municipal Water District 9-1 Urban Water Management Plan Demand Management
Measures
The CWC and UWMP Act require water agencies to describe the Demand Management Measures (DMMs) that an agency is implementing as part of its overall water conservation program. As both a retail and wholesale water agency, EMWD is responsible for fulfilling the requirements of both the retail and wholesale DMMs.
EMWD has established itself as a statewide leader in water use efficiency and continues to promote water conservation through investments in infrastructure, technology, education, and community outreach programs.
IN THIS SECTION
Programs to
Encourage and
Incentivize Efficient
Water Use
Demand Management Measures Section 9
Eastern Municipal Water District 9-2 Urban Water Management Plan In 2009, EMWD first implemented the use of water budgets for its residential customers. The tiered water rate structure was designed to promote water conservation by encouraging efficient water use and discouraging wasteful water usage. All residential customers received a monthly water budget allocation customized to meet their specific household and landscape irrigation needs. The rate structure set budgets for indoor usage and usage in excess of the total budget. In 2017, the Board adopted a new water rate structure, adjusted to meet new State standards that call for making water efficiency a permanent way of life. The changes maintained the principles behind EMWD’s rate structure, reflecting the cost of service while rewarding customers who use less and penalize those who are wasteful.
In 2019, EMWD launched its WaterWise Plus program, a comprehensive and forward-thinking program designed to assist customers and partner agencies with finding new and cost-effective ways to become more water efficient. The program integrates existing water use efficiency-based programs with longterm solutions that are promoted regardless of drought conditions. These programs help customers make lifestyle changes to their water use habits resulting in becoming more efficient with their water use, gaining a better understanding of their water usage, and making them better able to manage their monthly bills.
EMWD offers a wide range of programs for residential customers, including participation in the Metropolitan Water District of Southern California (Metropolitan) turf removal rebate program, EMWD offered water efficient devices and EMWD’s Demonstration Garden which is available for customers to view to obtain ideas on various water efficient and sustainable landscape options.
EMWD is also working with government agencies and the business community to develop long-term sustainable approaches to see the benefits that the average residential customers may realize. It is partnering with the cities it serves in introducing a landscape transformation program, promoting investments in climate appropriate landscaping in commercial, industrial, and instructional areas through turf replacement programs. EMWD is also partnering with its local agricultural customers to better understand current irrigation practices and to incorporate programs that will further assist local farmers in managing their water use.
EMWD is an industry leader in recycled water, one of the largest by volume recyclers in the nation and one of the few agencies that achieves 100 percent beneficial reuse in most years. Its recycled water system receives and treats more than 45 million gallons of wastewater each day at its four operating regional treatment plants. About 75 percent of recycled water production is sold to agricultural irrigation, landscaping, and industrial customers. It also serves several schools, parks, cities and county streetscaping, HOA landscape areas, golf courses, wetlands habitat areas and industrial cooling towers. EMWD has the ability to store more than two billion gallons of recycled water. With significant urban development, it is prepared to manage the increase in recycled water production and is securing the regions’ water future through water banking and its groundwater reliability efforts.
9.1 Demand Management Measures for Wholesale Suppliers
As a wholesale agency, EMWD is responsible for implementing DMMs for wholesale suppliers, as well as assisting its wholesale customers with their own DMM implementation. EMWD works closely with its wholesale customers to help fund, market, and implement a number of conservation programs.
9.1.1 Metering
All of EMWD’s wholesale customers are fully metered and billed volumetrically each month.
Eastern Municipal Water District 9-3 Urban Water Management Plan
9.1.2 Public Education and Outreach
As a wholesale agency, EMWD maintains extensive Public Information and School Education Programs for all of its wholesale customers.
Public Information Programs
As a wholesale agency, EMWD participates in a biennial landscaping competition with customers from EMWD, Western Municipal Water District (WMWD), and other water agencies throughout the Inland Empire as well as the respective sub agencies. EMWD initiated a long-term campaign to encourage all customers to use water wisely and offered materials with sub agencies. EMWD sponsors workshops and produces videos on California-friendly plants to promote landscaping using drought tolerant plants and the Water Waste Program to report/correct the wasteful use of water.
School Education Programs
EMWD implements an Education Program to foster understanding of water and wastewater issues and to promote wise water use among the future leaders of the community. EMWD’s extensive education program is designed to provide a useful academic experience at all grade levels (K-12). Any school within EMWD’s service area is eligible to benefit from the program. EMWD offers resources such as lesson plans, curriculum packets, and student materials.
As a wholesale agency, EMWD has created the language arts program “Write Off” for middle school students and is the lead agency in partnership with Rancho California Water District (RCWD), a sub agency of EMWD. Multiple presentations, which include complete curriculum packets, have resulted from this program, and agencies throughout California and other states have either duplicated the program or have requested materials to add to their current education programs.
Demand Management Measures Section 9
Eastern Municipal Water District 9-4 Urban Water Management Plan
9.1.3 Water Conservation Program Coordination and Staffing EMWD maintains full-time staffing for water conservation programs.
EMWD’s full time Conservation Staff include:
One Executive Assistant
One Conservation Program Assistant
One Conservation Program Specialist
One Water Resources Planning Manager
One Principal Water Resources Specialist
Two Water Resources Specialist Assistants
One Water Resources Specialist Associate
9.1.4 Other Demand Management Measures
EMWD’s wholesale agencies’ customers are eligible to participate in the region-wide rebate program offered through Metropolitan. EMWD has also worked with wholesale customers to implement agency administered programs funded in part by Metropolitan. EMWD provides support and information about water use efficiency to sub agencies and offers training opportunities in landscape efficiency.
EMWD has a volume-based rate structure for wholesale customers.
9.1.5 Asset Management
EMWD’s wholesale distribution system asset management program is the same as its retail asset management program.
The mission of EMWD is to deliver value to customers and the communities within EMWD’s service area by providing safe, reliable, economical, and environmentally sustainable water, wastewater, and recycled water services. One of the ways this mission is carried out is through the EMWD’s Asset Management program. This program was established to effectively manage assets throughout their lifecycle. The underpinnings of this program are rooted in research of other water agencies that have implemented Asset Management Plans.
One of the key components of the program is EMWD’s Computerized Maintenance Management System. This system is a transactional database system that is used to capture physical attributes as well as work activities performed on assets. Asset technicians manage the asset records during new construction, refurbishment, and replacements. Two of the initial attributes captured for asset records are installation date and original purchase price. In addition, other important data is collected such as horsepower, revolutions per minute (rpm), and power requirements. Asset grouping is employed to compare histories of like assets. Further analysis may provide insight on premature failures and lead to the procurement of better performing assets.
The lifecycles of assets are determined by a number of factors. Due to the nature of business at EMWD, assets may be found in office, potable water, wastewater, and recycled water operating environments. Wastewater produces the harshest operating conditions and, therefore, decreases the life of an asset more than other EMWD environments. Another factor that impacts the life of an asset is its expected life. Empirical data is the best indicator for predicting an asset’s expected life. This takes into account the operating conditions of the asset at a particular location using real-world parameters.
However, this method takes time to build history from maintenance activities. An alternative method entails using industry standards from similar operations. Combining these factors allows for the remaining life of assets to be calculated.
An Asset Management model was produced to provide a framework for business decisions related to the replacement and refurbishment (R&R) of EMWD’s assets. The inputs to the model include the Eastern Municipal Water District 9-3 Urban Water Management Plan physical location, remaining life expectancy, and the corrective maintenance costs. The health of an asset can be determined, in part, by the cost of maintenance relative to like assets. For example, if a potable pump historically costs more to maintain than another potable pump operating under similar conditions it should be further analyzed to understand the cause. Another input to the model includes EMWD’s Capital Improvement Projects. By including Capital Improvement Project commitments into the model, assets that are likely candidates based on maintenance costs or end of life may be excluded from R&R consideration.
Output from the Asset Management model is provided to management for budget preparation. Assets may be grouped by site for a holistic review. Furthermore, the model allows for grouping of assets by maintenance responsibility whether electrical, mechanical, or other maintenance group. Management can easily review assets nearing end of life or with higher than usual maintenance costs. Assets are earmarked for budget inclusion or deferred to a future budget cycle. These decisions are recorded in the Asset Management model for future reference.
9.1.6 Wholesale Supplier Assistance Programs
EMWD has implemented these programs:
Financial incentives provided for by Metropolitan for a variety of water efficient devices are administered through the SoCal Water$mart regional rebate program for residential and commercial customers. Both residential and commercial customers of EMWD’s sub agencies are eligible to participate in the regional rebate programs.
EMWD has hosted and/or conducted workshops for landscape professionals, including personnel and customers of EMWD’s sub agencies, providing certification opportunities for smart irrigation controller technologies. EMWD’s Board members hold Director Advisory Committee meetings with stakeholders throughout the year; and staff members attend/participate at local city councils and planning commissions. EMWD also provides assistance to sub agencies with various Geographic Information System (GIS) mapping requests.
EMWD is the first water agency in Riverside County to offer the Qualified Water Efficient Landscaper (QWEL) professional certification program which provides landscape professionals with 24 hours of education on principles of proper plant selection for the local climate, irrigation system design and maintenance, and irrigation system programming and operation. In order to obtain the QWEL certification an individual must demonstrate their ability to perform an irrigation system audit as well as pass the QWEL exam.
Staff meets with sub agencies to discuss conservation related topics. Regional incentive programs are administered though vendors assigned by Metropolitan and sub agencies are encouraged to participate in these programs. Metropolitan hosts monthly water use efficiency meetings to discuss the implementation of conservation programs; EMWD’s sub agencies are encouraged to participate. During a shortage, supply to wholesale customers could be allocated using the formula and methodology based on Metropolitan’s Water Supply Allocation Plan (WSAP). This plan takes into consideration: the impact on retail customers and the economy; population and growth; changes and/or loss of local supply; reclamation and recycling; conservation; and investment in local resources.
EMWD will establish base period demands and then adjust them for growth and changes in local supply. Regional shortages will be phased in 10 stages. At each stage the wholesale customers will not experience shortages on the wholesale level that are greater than one-and-a-half times the percentage shortage of regional water supplies; nor will they face a retail shortage less than the regional shortage. Credits will be given for conservation and investment in local supplies.
Demand Management Measures Section 9
Eastern Municipal Water District 9-4 Urban Water Management Plan
9.2 Existing Demand Management Measures for Retail
EMWD has implemented programs to meet the requirements for DMMs as a retail agency.
9.2.1 Water Waste Prevention Ordinances
EMWD has implemented the following initiatives:
Ordinance 72.25 – Water Use Efficiency Ordinance, implemented January 1991. EMWD reviews ordinances on a regular basis with the most recent revision effective February 2016. This ordinance prohibits water waste, imposes penalties for runoff, and requires efficient design in new development. The ordinance is enforced in two ways, (1) through EMWD’s allocation-based tiered rate structure for single family, multi-family and landscape accounts utilizing the domestic water system; and (2) through penalties for runoff.
Ordinance 117.2 – Water Shortage Contingency Plan, implemented July 2005. EMWD reviews the WSCP on a regular basis with the most recent modification adopted in 2017. This ordinance is designed for the purpose of protecting the integrity of water supply facilities (infrastructure), and implementing a contingency plan in times of drought, supply reductions, failure of water distribution systems or emergencies. The ordinance is included in Title 5, Article 10 of EMWD’s administrative code (amended by Resolution No 2017-152 on December 20, 2017). EMWD supports legislation and local ordinances that prohibit water waste, and supports local ordinances that establish requirements for water efficient design in new development. As a member of the Riverside County Water Task Force, EMWD participated in updating Riverside County’s Water Efficient Landscape Requirements Ordinance 859.
In mid-2015, EMWD adopted new development standards to further promote conservation throughout its service area. Beginning in July 2015, all new developments are prohibited from having non-functional turf, including turf in the front yards of new homes. With more than 60 percent of water in EMWD’s service area being used outdoors, this was designed to be a long-term strategy to minimize the impact of new development. EMWD’s service area is currently 40 percent built out, making it one of the few regions in Southern California that will see significant population growth in the coming decades. EMWD also helped the County of Riverside adopt a similar ordinance prohibiting turf in the front yards of new homes in all unincorporated areas of Riverside County. EMWD has also prohibited the installation of non-functional turf in all new Commercial, Industrial, and Institutional (CII) developments. While turf is being allowed in functional areas of new development, including parks and schools, it is no longer permitted within common area landscaping that provides no functional community benefit. Non-functional turf can best be described as turf that is only ever walked on when it is being mowed.
9.2.2 Metering
A water meter is defined as a device that measures the actual volume of water delivered to an account in conformance with the guidelines of the American Water Works Association (AWWA).
EMWD has implemented this DMM through the following programs:
1. Meters are required on all new service connections
2. All service connections in EMWD’s service area are metered
3. Meters are read on a monthly basis and billed monthly in hundred cubic feet
4. EMWD’s program for meter testing and replacement is referenced in Table 9-1 Eastern Municipal Water District 9-5 Urban Water Management Plan
5. EMWD has identified and measured all commercial customers with mixed use meters and completed creating water budgets for these customers in 2019
6. In an effort to reduce leaks, a continuous water use notification system was implemented in February 2016 which notifies customers of the presence of a constant water flow running through their meter (for every hour for several days), which is a strong indication of a possible leak
7. As part of the Water Loss Analysis that takes place every few years, EMWD now sends back approximately 30 small (5/8”-2”) meters each month for random testing to ensure accuracy
8. To better serve its customers in a more accurate and efficient manner, EMWD upgraded its meters to Advanced Metering Infrastructure (AMI) technology and Flex Net meters.
Table 9-1. Meter Testing and Replacement Frequency
METER TYPE METER SIZE
MONTHLY
CONSUMPTION
(HUNDRED CUBIC FEET)
METER TESTING
FREQUENCY
METER REPLACEMENT
FREQUENCY
Residential 5/8” – 2” Not Applicable Customer Request Upon Failure Commercial 3” and Larger 1,001 – Above 6 Months Upon Failure Commercial 3” and Larger 401 – 1,000 12 Months Upon Failure Commercial 3” and Larger 201 – 400 24 Months Upon Failure Commercial 3” and Larger 0 – 200 36 Months Upon Failure Sample Not Applicable Not Applicable Bi-Annually Upon Failure 1) Meter testing frequency based on age segment (1960’s, 1961 – 1969, 1970 – 1979, etc.)
9.2.3 Conservation Pricing
Retail Water Rates
Conservation pricing provides economic incentives (a price signal) to customers to use waster efficiently. Because conservation pricing requires a volumetric rate, metered water service is a necessary condition of conservation pricing.
This DMM is intended to reinforce the need for water agencies to establish a strong nexus between volume-related systems costs and volumetric commodity rates. Conservation pricing requires volumetric rates. The goal of this DMM is to recover the maximum amount of water sales revenue from volumetric rates that is consistent with utility costs (which may include utility long-run marginal costs), financial stability, revenue sufficiency, and customer equity. In addition to volumetric rates, conservation pricing may also include service connection charges, meter service charges and/or special rates and charges for temporary service, fire protection service and other irregular services provided by the utility.
The following volumetric rate designs are potentially consistent with the above definition:
1. Uniform rate in which the volumetric rate is constant regardless of the quantity consumed
2. Seasonal rates in which the volumetric rate reflects seasonal variation in water delivery costs
3. Tiered rates in which the volumetric rate increases as the quantity used increases
4. Allocation-based rates in which the consumption tiers and respective volumetric rates are based on water use norms and water delivery costs established by the utility Demand Management Measures Section 9
Eastern Municipal Water District 9-6 Urban Water Management Plan In February 2009, EMWD implemented an allocation-based tiered rate structure for single family residential, multi-family residential and landscape accounts. The rate structure was instituted to promote the efficient use of water and is designed to provide customers a significant economic incentive to use the proper amount of water required to serve indoor and outdoor (landscape) demands. This is accomplished by setting a customized “allocation” for each customer account based on a variety of factors such as: irrigated area, daily weather characteristics, size of household, and other more unique characteristics such as the presence of a pool, livestock, or medical needs. Water is then sold to customers under a four-tier structure based upon their monthly allocation which varies for landscape use relating to daily weather patterns. Customers using water within their allocation purchase water in the lower two tiers. Customers using in excess of their allocation also purchase water in the remaining two tiers that generally will result in relatively high water bills which can send a strong price signal for excessive use. The tiered rate structure was also designed so that 70 percent of the rate is variable.
In January 2019, EMWD implemented water budgets and tiered rates for additional commercial, industrial, and institutional (CII) customers. The water budgets for these non-residential customers are based on industry-standard methodology, which considers factors such as business, historical average use, and amount of irrigated landscape. The structure for the CII customers includes a three-tier structure, in which Tier 1 represents the budgeted supply, and, similar to the residential and landscape structure, customers using water within their allocation purchase water in the lower tier. Customers using in excess of their allocation also purchase water in the remaining two tiers that generally will result in relatively high water bills which can send a strong price signal for excessive use.
Retail Wastewater Rates
Conservation pricing of sewer service provides incentives to reduce average or peak use, or both.
Such pricing includes: (a) rates designed to recover the cost of providing service, and (b) billing for sewer service based on metered water use.
The following rate options are available for wastewater service:
1. Uniform rates in which the unit rate is the same across all units of service
2. Increasing block rates in which the unit rate increases as the quantity of units purchased increases
3. Rates in which the unit rate is based upon the long-run marginal cost or the cost of adding the next unit of capacity to the sewer system
4. Rates that charge customers a fixed amount per billing cycle for sewer service regardless of the unit of service consumed; and/or rates in which the typical bill is determined by high fixed charges and low commodity charges do not satisfy the definition of conservation pricing of sewer services.
EMWD complies with an at least as effective approach for this DMM. EMWD and RCWD, its largest sub agency, both have allocation-based tiered rate billing structures. The allocation-based tiered rate billing structure sends a strong price signal against using excessive water both indoors and outdoors.
EMWD also uses the household size provided water budgets to tier sewer pricing. Finally, EMWD recycles all of its wastewater and reuses it within the service area. These methods are at least as effective as a conserving rate structure for wastewater.
Eastern Municipal Water District 9-7 Urban Water Management Plan
9.2.4 Public Education and Outreach
California water agencies have played a major role in promoting water use efficiency through both public information and school education programs. EMWD’s Public Information and Education Programs for its retail service area are described below.
Public Information Programs
Public information programs are an effective tool to educate customers about the need for water use efficiency and to influence customer behavior towards conservation. The following actions are necessary to implement a public information program to promote water conservation and related benefits:
Public speakers to employees, community groups and the media Advertising using paid and public service
Customer communication using bill inserts and on bill comparison charts for multi-year usage Coordination with government agencies, industry groups, public interest groups and media Marketing designed to change attitudes and influence behavior EMWD has implemented this DMM in the following ways:
1. EMWD provides public speakers at new employee orientation which is conducted twice each year; provides information to employees via intranet updates on a regular basis; and occasionally provides employees with fact sheets or talking points on industry issues that may be topics of discussion with individuals outside of EMWD. Public speakers are also provided to community groups, in a variety of settings such as rotary clubs, homeowners associations, religious organizations, and mobile home parks. EMWD’s active speakers’ bureau provides multiple presentations each month. EMWD maintains an active relationship with reporters by phone, email and direct contact regarding topical issues relating the need to encourage water use efficiency throughout its service area. EMWD utilizes a number of means for paid advertising such as various Chambers of Commerce programs and newsletters and a variety of community publications.
Monthly cable slides are used for public service advertising. Customer communication includes bill inserts, bill messaging, monthly usage comparisons on the water bills, monthly emails, and bimonthly newsletters.
2. EMWD provides public information to promote water conservation measures. In an effort to effect changes in attitude and influence behavior, EMWD has active pages on common social media sites that are updated regularly, and dedicated water use efficiency web pages that are updated on a regular basis. Addressing the subject of training stakeholders, EMWD has hosted and/or conducted workshops for landscape professionals, providing certification opportunities for smart irrigation controller technologies. EMWD’s Board members hold Director Advisory Committee meetings with stakeholders throughout the year; and staff members attend/participate at local city councils, planning commissions, and chambers of commerce events. Ongoing outreach efforts targeting new residential customers consists of a welcome letter and bi-monthly newsletters containing seasonal tips and ideas for water use efficiency. EMWD enforces local and state landscape ordinances through the use of budget based tiered rates.
3. EMWD’s Education Program uses a variety of grade-appropriate curriculum to educate area students about the importance of water use efficiency. Through its wide range of programs, EMWD reaches more than 60,000 students per year. The long-term objective of the program is to establish positive water use efficiency habits at a young age in order to have a future generation of ratepayers who understand the importance of using water efficiently. Among the programs offered are: school assembly programs, field trips, classroom and virtual presentations, annual “Write-Off” Demand Management Measures Section 9
Eastern Municipal Water District 9-8 Urban Water Management Plan contests where students write and illustrate a water-themed book, and participation in regional poster contests.
EMWD participates in Metropolitan’s regional rebate programs administered through SoCal Water$mart for residential and commercial customers.
School Education Programs
School education programs have been implemented to reach the youngest water users at an early age and reinforce the need to engage in water conservation as a life-long behavior. The following actions are necessary to implement school education programs to promote water conservation and related benefits:
1. Provide instructional assistance to school districts and private schools within the service area
2. Provide educational materials and classroom presentations that identify urban, agricultural and environmental issues and conditions in the local watershed
3. Develop and/or provide grade appropriate educational materials that meet the state education framework requirements
EMWD has implemented this DMM in the following ways:
1. EMWD has a very robust school education program that promotes water conservation and all aspects of environmental education. Additionally, EMWD works very closely with public and private schools within both its retail and wholesale service areas to provide educational materials which are in alignment with the California content standards for grades K-12.
2. EMWD provides classroom presentations covering water conservation, potable water treatment, desalination, wastewater treatment, purified water replenishment, and all aspects of environmental education. EMWD sponsors weekly field trips for students in eleven school districts throughout EMWD’s service area to tour one of EMWD’s wastewater treatment facilities and wetlands project and includes water education activities that are conducted in the education facility. EMWD provides materials developed by EMWD education staff and Metropolitan for K-12 students.
EMWD has also developed a variety of curriculum for K-5 students including:
Wastewater Treatment for All Curious Beings – activity book Dewie the Dragon – curriculum packet
Gobi’s Adventure – curriculum packet
Otis the Turtle gets Water Wise – curriculum packet
Lily and the Seven Drops – curriculum packet
Bartholomew the Bird Investigates How to Use Water Wisely – curriculum packet and puppet show
The following contests are also promoted by EMWD on an annual basis:
Grades K-5 Students – Poster contest “Water Use it Wisely” Grades 6-8 Students – Language Arts contest “Write-Off” (results in a published book, written and illustrated by 6-8 grade students)
Grades 9-12 Students – Solar Cup event (MWD provides boat hull for students to assemble and EMWD provides financial support for students to outfit the boat with a motor and solar panels); and new video contest
Eastern Municipal Water District 9-9 Urban Water Management Plan EMWD participates in the following school and community activities:
Environmental, science, health, and community fairs – provide activities and materials Annual environmental youth conference – provided in partnership with other agencies Sponsoring an environmental assembly program for schools in EMWD’s service area EMWD offers the following assistance for teachers in the service area:
Training programs offered by EMWD and Metropolitan
Training workshops offered by EMWD in partnership with other agencies to spotlight programs
Training for Project WET offered
Conservation and Education have joined together to develop the Augmented Reality Sandbox Program (ARS) to help students learn about watersheds and topography by shaping and molding kinetic sand.
Students will learn about the importance of watersheds, how we can protect them, and study elevation levels to create measurements. The ARS directly supports fourth and fifth grade common curriculum by concentrating on mathematics and science standards.
EMWD is one of Metropolitan’s member agencies, as such Metropolitan has taken the lead as the wholesale agency in the Student Poster Contest Program and the Annual Solar Cup Event.
Metropolitan has also provided curriculum for K-12 students.
9.2.5 Programs to Assess and Manage Distribution System Real The goals of modern water loss control methods include both an increase in water use efficiency in the utility operations and proper economic valuation of water losses to support water loss control activities.
In May 2009, the AWWA published the 3rd Edition M36 Manual “Water Audits and Loss Control Programs.” This DMM incorporates these water loss management procedures and applies them in California. Agencies are expected to use the AWWA Free Water Audit Software to complete their standard water audit and water balance. For the 2020 UWMP, water agencies are required to calculate water loss using the AWWA software and report it with water use in Chapter 4.
EMWD has implemented this DMM in the following ways:
1. EMWD has compiled the standard water audit report for the past five years and included those results in Chapter 4.
2. The following methods are used to test source, import and production meters:
Source Meters: Well meters are recalibrated or replaced annually. Filtration Plant and Desalter system supply meters are monitored against the raw water supply meters and calibrated annually.
Import Meters: Metropolitan tests their connection meters bi-annually. EMWD’s system meters are recalibrated annually and flows are monitored daily. Significant differences with Metropolitan deliveries are addressed jointly between EMWD and Metropolitan.
Production Meters: Production meters are bench tested by a certified independent laboratory.
Some large volume meters are calibrated twice a year.
3. EMWD has completed component analyses of real losses for fiscal years 2010 and 2014.
4. EMWD repairs reported leaks and breaks to the extent that are cost effective. A work order tracking system is used to track pipeline and service leaks by type and completed repairs.
5. In order to identify unreported leaks, EMWD monitors water use by customers and notifies them of anomalies that could indicate a possible leak.
Demand Management Measures Section 9
Eastern Municipal Water District 9-10 Urban Water Management Plan
9.2.6 Water Conservation Program Coordination and Staffing Support EMWD has implemented this DMM.
EMWD’s full time Conservation Staff include
One Executive Assistant
One Conservation Program Assistant
One Conservation Program Specialist
One Water Resources Planning Manager
One Principal Water Resources Specialist
Two Water Resources Specialist Assistants
One Water Resources Specialist Associate
The Principal Water Resources Specialist and Water Resources Planning Manager serve as liaisons between EMWD and other public agencies, community and industry groups, and the media; recommends, develops and coordinates implementation of EMWD conservation programs; and assists in analyzing program goals, performance measures, and sources of funding. The Water Resources Specialist Associate participates in the implementation of conservation programs; develops and implements programs to inform, educate and assist with efficient water use and conservation; represents EMWD with customers in community events and meetings regarding conservation issues; and develops and implements methods to measure improvements in water use efficiency and customer satisfaction. The Conservation Program Specialist assists in the development and implementation of conservation programs; conduct water leak investigations; issue citations to enforce mandatory water conservation ordinances during times of water shortage; and represent EMWD with customers and community events and meetings on conservation issues. The Conservation Program and Water Resources Specialist Assistants perform a variety of customer service functions related to water conservation; assists with residential, landscape and CII water surveys; measures landscape area for water budgets; sends water waste notices; research problems; and conducts related duties assigned.
The Executive Assistant provides administrative support for the Conservation Program.
9.2.7 Other Demand Management Measures
EMWD has implemented the following additional DMMs.
Residential Assistance Program
In 1997 EMWD’s Conservation staff began performing residential surveys on a limited basis; during FY 2007/2008 and a portion of FY 2008/2009 these surveys were outsourced to a third party. In early 2009, the number of Conservation staff members increased, and in April 2009 the function of performing residential surveys was resumed by internal staff. With a dramatic increase in field and office work in August 2013, the residential surveys were outsourced to a new vendor “Water-Wise Consulting”. In 2020 a new vendor was selected through a competitive process and awarded to “ConServe Inc. and to date the vendor continues to perform both residential and multi-family home surveys. Components of the indoor water survey include checking the water meter leak detector and testing the water meter for accuracy; testing flow rates for kitchen faucet, bathroom faucet(s) and showerhead(s) to determine gallons per minute (gpm); verify toilet(s) gallons per flush and perform a leak detection dye test on each toilet; verify use of dishwasher, hot water heater setting and clothes washer type. Upon completion of each survey, the customer is provided with a report that includes survey results and water efficient recommendations, along with information on incentives for eligible Eastern Municipal Water District 9-11 Urban Water Management Plan water saving devices when available. Showerheads, aerators and toilet flappers are distributed with surveys as needed.
In addition to surveys EMWD provides leak detection assistance to customers through the distribution of conservation packets. On average, staff members also distribute more than 250 conservation packets to residential customers each month. These packets are available in both English and Spanish to accommodate the needs of a majority of EMWD’s residential retail customers. Conservation packets provide the customer with information on how to read their water meter, leak detection dye tablets for toilets, and instructions on how to identify leaks in the home.
In January 2010, EMWD began to distribute Outdoor Water Use Efficiency Kits to residential customers. The Outdoor Water Use Efficiency Kit is designed to help residential customers create a custom irrigation schedule, repair a leaky hose and eliminate water running from an unattended hose.
Since 1990, EMWD has maintained a program to provide residential customers with water efficient showerheads and faucet aerators. These devices continue to be distributed when needed and are made available to customers at EMWD’s office, as part of the residential survey program and at various outreach events.
EMWD was awarded a grant for the Spray-to-Drip Retrofit Kit Program (Kit Program) from the United States Bureau of Reclamation (USBR) in March 2019. Through this grant, 1,110 Spray-to-Drip conversion kits are offered to residential customers free of charge. The kits contain enough equipment to convert between 250 and 400 square-feet of planter beds from spray to drip irrigation, depending on planting density. As of February 2020, all 1,110 Spray-to-Drip conversion kits required for grant compliance have been distributed and installation verified. EMWD will look for opportunities to expand this program in the future.
EMWD was awarded a grant for the Residential Irrigation Efficiency Project (Project) from the USBR in September 2019. Through this grant, 50 single family homes will have their existing irrigation systems replaced with high efficiency irrigation equipment and manage the watering schedules for a one-year period. The equipment installation and watering schedule management will be conducted by a qualified contractor. Staff will monitor water consumption via EMWD’s automated meter infrastructure system, and the homeowners will agree to keep their irrigation system in good working order for the duration of the project. The Project offers cost share funding for water use efficiency activities that result in water savings, improved water management and energy efficiency.
Landscape Water Survey
The landscape water survey requirement is being met through the implementation of tiered rates. A water budget for efficient landscape irrigation was developed for all residential customers. The water budget is enforced monthly through a tiered billing system. For those who exceed budget targets a residential survey may be performed to assist the customer in identifying where water can be saved.
Staff members and/or the vendor perform on-site landscape surveys as part of the complete residential survey. Components of the outdoor water survey for single family residential accounts include checking the water meter leak detector and testing the water meter for accuracy; checking irrigation timer programming; running a one-minute test for each irrigation station to obtain gpm data and checking for system leaks; checking system pressure; obtaining plant and soil type(s) for reporting and measuring irrigated landscape area. Upon completion of each survey, the customer is provided with a report that includes survey results and a watering schedule, water efficient recommendations, and information on incentives for eligible water saving devices when available. EMWD has also developed a cost share program for the direct installation of residential smart irrigation controllers, high-efficiency precision nozzles, drip irrigation, and on-site landscape surveys as a component of this program.
Demand Management Measures Section 9
Eastern Municipal Water District 9-12 Urban Water Management Plan High Efficiency Clothes Washers
EMWD has provided incentives for HECWs since 2001. In late 2010, EMWD established partnerships with the United States Bureau of Reclamation (USBR) through grant funding, and Southern California Gas Company, for the direct installation of HECWs with a water factor of 4.0 or less.
WaterSense Specification Toilets
EMWD began offering incentives for toilet retrofits in 1992, beginning with Ultra Low-Flush Toilets (ULFT). Incentives included customer rebates and free distribution events. Incentives for High Efficiency Toilets (HET) were added in 2005. HET incentive programs included customer rebates, free distribution events and a direct installation program which began in 2008. To continue to encourage the installation of water saving devices, the Replace and Save Multi-Family Toilet Program was implemented in 2014 and was targeted towards multi-family customers to help reduce or eliminate the cost associated with replacing older inefficient toilets with new efficient toilets.
Commercial, Industrial, and Institutional
CII water demands make up a large percentage of total demand for California. CII water use varies dramatically between business sectors as well as within a given water agency’s territory. The goal of this DMM is to implement comprehensive yet flexible measures, allowing each water agency to tailor the implementation of each practice to fit local needs and opportunities. The end result is a practice that is successful and will produce the greatest amount of cost-effective water savings.
EMWD continues to encourage efficiency by CII customers and in 2019 implemented budget-based tiered rates for these customers. Financial incentives provided for by Metropolitan for a variety of water efficient devices used in the CII sector are administered through the SoCal Water$mart regional rebate program. In 2008, EMWD implemented the Public School Retrofit program; providing surveys and direct installation of both indoor and outdoor devices for more than 40 school sites within EMWD’s retail service area. In 2009, conservation staff developed a program to identify CII accounts with mixed use meters, accounts with the highest water use are contacted first and offered CII water use surveys.
Components of the CII water use survey include checking the water meter leak detector and testing the water meter for accuracy; checking irrigation timer programming; running a one-minute test for each irrigation station obtain gpm data and check for system leaks; checking system pressure; obtaining plant and soil type(s) for reporting and measuring irrigated landscape area. Upon completion of each survey, the customer is provided with a report that includes survey results and a watering schedule, water efficient recommendations, and information on incentives for eligible water saving devices when available.
Landscape
Irrigation accounts for a large portion of urban water use in California. Irrigation water use varies dramatically depending on water pricing and availability, plant choice, geographic locations, seasonal conditions, and the level of commitment to sound water efficiency practices. The goal of this DMM is that irrigators, with assistance from signatories, will achieve a higher level of water use efficiency consistent with the actual irrigation needs of the plant materials. Reaching this goal would reduce overall demands for water, reduce demands during the peak summer months, and still result in a healthy and vibrant landscape in California.
Accounts with Dedicated Irrigation Meters:
Through the tiered rate process, EMWD has developed water budgets for 100 percent of dedicated landscape accounts.
Eastern Municipal Water District 9-13 Urban Water Management Plan Water bills for these accounts include data that reflect the relationship between the water budget 70 percent ETo and actual usage.
Each water bill for dedicated landscape meters provides a contact number with an offer for assistance. An audit program and technical assistance are made available to customers that make a request.
EMWD has offered financial incentive programs for landscape since 1992, including large landscape audits, soil moisture sensors, weather-based irrigation controller (WBIC) rebates and distribution, large rotary nozzle rebates, and rotating nozzle and synthetic turf rebates. In 2006, EMWD implemented a program to supplement the cost of high efficiency nozzles, including labor for installation, for large landscape accounts. In 2008, EMWD also implemented a public school retrofit program that includes the direct installation of WBICs and high efficiency nozzles. In 2012, EMWD implemented the Large Landscape Assistance Program which provides large landscape customers with the option to have Toro precision nozzles directly installed or receive a voucher for high efficiency nozzles and smart controllers.
Commercial, Industrial, Institutional Accounts without Meters or with Mixed-Use Meters EMWD’s retail service area includes an estimated 4,500 CII accounts. In July 2009, Conservation staff developed a program to identify CII accounts with mixed use meters and offer on-site surveys.
EMWD has offered financial incentive programs for landscape since 1992, including large landscape audits, soil moisture sensors, WBIC rebate and distribution, large rotary nozzle rebates, rotating nozzle, and synthetic turf rebates.
9.3 Reporting Implementation
9.3.1 Implementation Over the Past Five Years
A summary of the extent to which these programs have been implemented is provided in Table 9-2.
Demand Management Measures Section 9
Eastern Municipal Water District 9-14 Urban Water Management Plan Table 9-2. DMM Implementation
2016 2017 2018 2019 2020
PROGRAM TYPE DEVICES COST PARTICIPANTS DEVICES COST PARTICIPANTS DEVICES COST PARTICIPANTS DEVICES COST PARTICIPANTS DEVICES COST PARTICIPANTS CII & Multi-Family Drip
Rebate Commercial - $- - 221,706 $79,739 12 353,068 $176,501 17 97,151 $42,608 9 55,746 $27,873 2 Drip Retrofit Kit Voucher
Program Residential - $- - 52 $5,564 36 6 $757 5 437 $66,895 231 319 $49,954 166 HECW Direct Install Residential 161 $10,465 161 845 $54,015 831 332 $21,450 330 173 $11,245 173 232 $14,885 228 Large Landscape Controller
Voucher Program Commercial 1 $3,567 4 19 $8,969 17 3 $2,361 2 5 $32,184 2 7 $24,652 4 Large Landscape Nozzle
Voucher Program Commercial 3,994 $20,138 11 - $- - - $- - - $- - - $- - Regional Rebates: Cistern Residential 3 $950 3 - $- - - $- - - $- - - $- - Regional Rebates: HECW Residential 985 $102,105 986 326 $45,000 326 225 $33,685 225 150 $22,060 148 261 $39,150 261 Regional Rebates: HET Residential 233 $19,153 133 35 $1,400 19 37 $1,480 18 27 $1,475 19 579 $23,160 9 Regional Rebates: HET Commercial 2 $196 1 - $- - - $- - - $- - - $- - Regional Rebates: Ice-Making
Machine Commercial - $- - - $- - 1 $1,000 1 - $- - - $- - Regional Rebates: NOZZLES Residential 392 $1,110 10 291 $580 6 235 $470 5 144 $288 3 95 $190 3 Regional Rebates: NOZZLES Commercial - $- - - $- - - $- - - $- - - $- - Regional Rebates: RAIN
BARREL Residential 205 $15,413 82 19 $665 11 6 $210 4 6 $210 4 8 $280 5 Regional Rebates: Soil
Moisture Sensor System Residential - $- - - $- - 1 $145 1 - $- - - $- - Regional Rebates: Soil
Moisture Sensor System Commercial - $- - - $- - - $- - - $- - - $- - Regional Rebates: Synthetic
Turf Residential - $- - - $- - - $- - - $- - - $- -
Regional Rebates: Urinal Commercial - $- - - $- - - $- - - $- - - $- - Regional Rebates: WBIC Residential 146 $25,813 141 164 $21,921 159 326 $39,581 315 280 $30,060 273 361 $35,636 349 Regional Rebates: WBIC Commercial 59 $95,239 20 12 $27,624 4 36 $80,987 13 9 $16,256 8 1 $1,680 1 Residential Water Survey Residential 113 $14,125 113 94 $11,750 94 473 $59,125 473 252 $31,500 252 77 $9,625 77 Smart Controller Direct Install
Program (Residential) Residential 53 $6,669 48 2 $150 2 7 $675 9 2 $225 3 9 $2575 8 Toro Direct Install Program
(Commercial) Commercial 3,417 $10,319 6 - $- - - $- - - $- - - $- - Toro Nozzle Direct Install
Program (Residential) Residential 1,194 $7,304 23 - $- - - $- - - $- - - $- - Turf Buy Back Program Residential 696,153 $264,162 463 30,041 $58,468 19 9,789 $10,416 11 51,247 $95,358 46 76,076 $169,931 58 Turf Buy Back Program Commercial 1,946,465 $3,219,438 58 1,023,072 $1,752,401 53 342,580 $1,113,855 10 333,457 $476,040 13 409,230 $855,944 12
Demand Management Measures Section 9
Eastern Municipal Water District 9-15 Urban Water Management Plan
9.3.2 Implementation Achieve Water Use Targets
EMWD estimates water saving have occurred due to ordinances in place, the implementation of tiered rates and active conservation. EMWD will continue to improve water efficiency through a budget based tiered rate, requirements for water efficiency in new construction and an active conservation program.
Water use reduction will be focused on outdoor demand reduction by all customer types. Even after surpassing its water efficiency target for 2020, EMWD estimates that there is the potential for additional conservation savings through 2045.
EMWD will continue to reduce potable water demand in two ways: using recycled water to offset potable water demand and reducing demand for water through conservation. In December 2015, EMWD completed a Water Use Efficiency Master Plan which articulates the goals, strategies, and tactics required to deliver long-term solutions for secure and reliable water supplies. The Water Use Efficiency Master Plan helped to identify and update the targets for saving water through active conservation and provided a portfolio of projects and actions to meet the requirements of SB X7-7.
EMWD anticipates continuing these programs to meet the requirements of future water use standards.
9.4 Water Use Objectives (Future Requirements)
EMWD’s final water use objectives have not yet been determined.
Eastern Municipal Water District 10-1 Urban Water Management Plan Plan Adoption,
Submittal, and
Implementation
This chapter describes the processes for adoption of this UWMP and WSCP, submittal of required information to DWR and other entities, and EMWD’s implementation of the plan.
EMWD has coordinated with cities and counties within its service area to solicit input and feedback during preparation of this UWMP.
IN THIS SECTION
Public Hearing
Notices
Adoption by EMWD
Board of Directors
Future Amendments
Plan Adoption, Submittal, and Implementation Section 10 Eastern Municipal Water District 10-2 Urban Water Management Plan
10.1 Inclusion of All 2020 Data
This UWMP and WSCP have been prepared on a calendar year basis and include data through the end of December 2020.
10.2 Notice of Public Hearing
EMWD encouraged public participation during the development of this UWMP and WSCP and provided opportunities for public review and comment. First, EMWD sent out notices via electronic mail on January 19, 2021 to cities within its retail and wholesale service area and the County of Riverside to inform these stakeholders that the UWMP was being reviewed, modified, and prepared in advance of the 60-day period leading up to the public hearing. Additional notices went out to these agencies announcing when the draft UWMP and WSCP would be available for public review and announcing the time and date of the public hearing. The agencies receiving these notices are shown in Table 10-1 and Table 10-2.
Notices of the public hearing were also published in the local newspaper and placed at the EMWD office. The notice included the time and date of the hearing and stated that the draft UWMP and WSCP were available for public review and comment until June 30, 2021 at the EMWD office or on EMWD’s website. A copy of the public notice is provided in Appendix J.
EMWD conducted the public hearing on June 30, 2021 at the EMWD office to hear and discuss public comments on the draft UWMP and WSCP prior to EMWD Board adoption. No written comments were received on the draft documents.
10.2.1 Notice to Cities and Counties
Notices were provided to the cities and counties within the service area. Notice was provided more than 60 days before the public hearing, and subsequent notice was provided with information about the date and time of the public hearing.
10.2.1.1 60 Day Notification
EMWD provided notices to the agencies shown in Table 10-1 and Table 10-2 that this UWMP and WSCP was being updated and asking for input.
10.2.1.2 Notice of Public Hearing
EMWD provided notices to the agencies shown in Table 10-1 and Table 10-2 that a public hearing had been scheduled to review and consider adoption of the UWMP and WSCP.
Plan Adoption, Submittal, and Implementation Section 10 Eastern Municipal Water District 10-3 Urban Water Management Plan Table 10-1. DWR 10-1R Notification to Cities and Counties CITY 60 DAY NOTICE NOTICE OF PUBLIC HEARING
City of Beaumont Yes Yes
City of Canyon Lake Yes Yes
City of Menifee Yes Yes
City of Moreno Valley Yes Yes
City of Murrieta Yes Yes
City of Riverside Yes Yes
City of Temecula Yes Yes
Pechanga Band of Luiseño Indians Yes Yes
Soboba Band of Luiseño Indians Yes Yes
COUNTY 60 DAY NOTICE NOTICE OF PUBLIC HEARING
Riverside County Yes Yes
Table 10-2. DWR 10-1W Notification to Cities and Counties CITY 60 DAY NOTICE NOTICE OF PUBLIC HEARING
City of Perris Yes Yes
City of Hemet Yes Yes
City of San Jacinto Yes Yes
COUNTY 60 DAY NOTICE NOTICE OF PUBLIC HEARING
Riverside County Yes Yes
OTHER 60 DAY NOTICE NOTICE OF PUBLIC HEARING
Lake Hemet Municipal Water District Yes Yes
Nuevo Water Company Yes Yes
Rancho California Water District Yes Yes
Western Municipal Water District Yes Yes
Elsinore Valley Municipal Water District Yes Yes
Metropolitan Water District of Southern California Yes Yes Fallbrook Public Utility District Yes Yes
Rainbow Municipal Water District Yes Yes
10.2.2 Notice to the Public
EMWD provided notice to the public through its web site that the UWMP and WSCP were being updated. Notice of the public hearing was published twice in the local newspaper in accordance with Section 6066 of the Government Code. Copies of these notices are included in Appendix J.
10.3 Public Hearing and Adoption
EMWD’s Board of Directors held a public hearing to consider adoption of this UWMP and WSCP. The documents were adopted by the Board after the hearing.
Plan Adoption, Submittal, and Implementation Section 10 Eastern Municipal Water District 10-4 Urban Water Management Plan
10.3.1 Public Hearing
EMWD held a public hearing on June 30, 2021 at 8:00 a.m. The meeting was held at EMWD’s headquarters, with an option to join virtually through an online collaboration platform. EMWD staff made a brief presentation of the contents of the UWMP and WSCP, and the public was given the opportunity to provide comments.
10.3.2 Adoption
The UWMP and WSCP were adopted by the EMWD Board of Directors on June 30, 2021 after the public hearing. Copies of the resolutions are provided in Appendix K.
10.4 Plan Submittal
EMWD plans to implement the adopted UWMP in accordance with the schedule described in the plan.
Any amendments made to this UWMP will require completion of the same series of notification, public hearing, adoption, and submittals as required in submittal of this UWMP.
10.4.1 Submittal of the UWMP and Water Shortage Contingency Plan to DWR
The UWMP and WSCP will be submitted to DWR electronically on or prior to the CWC’s deadline of July 1, 2021.
10.4.2 Electronic Data Submittal
The standardized UWMP data tables will be uploaded to the WUEData portal electronically on or prior to the CWC’s deadline of July 1, 2021.
10.4.3 Submittal of the UWMP to the California State Library No later than 30 days after adoption, EMWD will submit a copy of the UWMP and WSCP to the California State Library.
10.4.4 Submittal of the UWMP to Cities and Counties
The UWMP will be made available to Riverside County and the cities within EMWD’s service area.
Email notifications were sent to these entities to make them aware that the plan was available.
10.5 Public Availability
A hard copy of the UWMP and WSCP will be made publicly available at the EMWD office, and an electronic copy of the UWMP and WSCP will be available for public viewing on the EMWD website.
Plan Adoption, Submittal, and Implementation Section 10 Eastern Municipal Water District 10-5 Urban Water Management Plan
10.6 Notification to Public Utilities Commission
EMWD is not regulated by the California Public Utilities Commission (CPUC) and is therefore not required to notify the CPUC that this report has been updated.
10.7 Amending an Adopted UWMP or Water Shortage Contingency Plan
If EMWD elects to make changes to the UWMP or WSCP, the required processes will be followed for notification and adoption.
10.7.1 Amending a UWMP
Amending this UWMP will require the same steps for notification, public hearing, adoption, and submittal as the original 2020 plan.
10.7.2 Amending a Water Shortage Contingency Plan
Amending the WSCP included in this UWMP will require the same steps for notification, public hearing, adoption, and submittal as the original 2020 plan.
Eastern Municipal Water District 10-6 Urban Water Management Plan
A
Appendix A: DWR UWMP
Checklist
Retail Wholesale
2020 Guidebook Location Water Code Section Summary as Applies to UWMP Subject 2020 UWMP Location (Optional Column for Agency Review Use) xx Chapter 1 10615 A plan shall describe and evaluate sources of supply, reasonable and practical efficient uses, reclamation and demand management activities. Introduction and Overview Section 1.1 xx
Chapter 1 10630.5
Each plan shall include a simple description of the supplier’s plan including water availability, future requirements, a strategy for meeting needs, and other pertinent information. Additionally, a supplier may also choose to include a simple description at the beginning of each chapter.
Summary Lay Description
xx Section 2.2 10620(b) Every person that becomes an urban water supplier shall adopt an urban water management plan within one year after it has become an urban water supplier. Plan Preparation Section 2.1 xx
Section 2.6 10620(d)(2)
Coordinate the preparation of its plan with other appropriate agencies in the area, including other water suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable.
Plan Preparation Section 2.3
xx
Section 2.6.2 10642
Provide supporting documentation that the water supplier has encouraged active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of the plan and contingency plan.
Plan Preparation Section 2.3
x Section 2.6, Section 6.1 10631(h) Retail suppliers will include documentation that they have provided their wholesale supplier(s) - if any - with water use projections from that source. System Supplies Section 2.3.1 x
Section 2.6 10631(h)
Wholesale suppliers will include documentation that they have provided their urban water suppliers with identification and quantification of the existing and planned sources of water available from the wholesale to the urban supplier during various water year types.
System Supplies Section 2.3.1
xx Section 3.1 10631(a) Describe the water supplier service area. System Description Section 3.1 xx Section 3.3 10631(a) Describe the climate of the service area of the supplier. System Description Section 3.3xx Section 3.4 10631(a) Provide population projections for 2025, 2030, 2035, 2040 and optionally 2045. System Description Section 3.4.1xx Section 3.4.2 10631(a) Describe other social, economic, and demographic factors affecting the supplier’s water management planning. System Description Section 3.4.2 xx Sections 3.4 and 5.4 10631(a) Indicate the current population of the service area. System Description and Baselines and Targets Section 3.4.1 xx Section 3.5 10631(a) Describe the land uses within the service area. System Description Section 3.5 xx Section 4.2 10631(d)(1) Quantify past, current, and projected water use, identifying the uses among water use sectors. System Water Use Section 4.1xx Section 4.2.4 10631(d)(3)(C) Retail suppliers shall provide data to show the distribution loss standards were met. System Water Use Section 4.2 xx Section 4.2.6 10631(d)(4)(A) In projected water use, include estimates of water savings from adopted codes, plans and other policies or laws. System Water Use Section 4.1.1 xx Section 4.2.6 10631(d)(4)(B) Provide citations of codes, standards, ordinances, or plans used to make water use projections. System Water Use Section 4.1.1x optional Section 4.3.2.4 10631(d)(3)(A) Report the distribution system water loss for each of the 5 years preceding the plan update. System Water Use Section 4.2 x optional Section 4.4 10631.1(a) Include projected water use needed for lower income housing projected in the service area of the supplier. System Water Use Section 4.3 xx Section 4.5 10635(b) Demands under climate change considerations must be included as part of the drought risk assessment. System Water Use Section 4.4 x
Chapter 5 10608.20(e)
Retail suppliers shall provide baseline daily per capita water use, urban water use target, interim urban water use target, and compliance daily per capita water use, along with the bases for determining those estimates, including references to supporting data.
Baselines and Targets Section 5.1
x Chapter 5 10608.24(a) Retail suppliers shall meet their water use target by December 31, 2020. Baselines and Targets Section 5.3 x
Section 5.1 10608.36 Wholesale suppliers shall include an assessment of present and proposed future measures, programs, and policies to help their retail water suppliers achieve targeted water use reductions. Baselines and Targets Section 5 x
Section 5.2 10608.24(d)(2)
If the retail supplier adjusts its compliance GPCD using weather normalization, economic adjustment, or extraordinary events, it shall provide the basis for, and data supporting the adjustment.
Baselines and Targets Section 5.3.1
x
Section 5.5 10608.22
Retail suppliers’ per capita daily water use reduction shall be no less than 5 percent of base daily per capita water use of the 5 year baseline. This does not apply if the suppliers base GPCD is at or below 100.
Baselines and Targets Section 5.1
x Section 5.5 and Appendix E 10608.4 Retail suppliers shall report on their compliance in meeting their water use targets. The data shall be reported using a standardized form in the SBX7-7 2020 Compliance Form. Baselines and Targets Section 5.1 xx Sections 6.1 and 6.2 10631(b)(1) Provide a discussion of anticipated supply availability under a normal, single dry year, and a drought lasting five years, as well as more frequent and severe periods of drought. System Supplies Section 7.1 xx
Sections 6.1 10631(b)(1)
Provide a discussion of anticipated supply availability under a normal, single dry year, and a drought lasting five years, as well as more frequent and severe periods of drought, including changes in supply due to climate change.
System Supplies Section 7.1
xx Section 6.1 10631(b)(2) When multiple sources of water supply are identified, describe the management of each supply in relationship to other identified supplies. System Supplies Section 6.1
Retail Wholesale
2020 Guidebook Location Water Code Section Summary as Applies to UWMP Subject 2020 UWMP Location (Optional Column for Agency Review Use) xx Section 6.1.1 10631(b)(3) Describe measures taken to acquire and develop planned sources of water. System Supplies Section 6.2.8 xx Section 6.2.8 10631(b) Identify and quantify the existing and planned sources of water available for 2020, 2025, 2030, 2035, 2040 and optionally 2045. System Supplies Section 6.2.9 xx Section 6.2 10631(b) Indicate whether groundwater is an existing or planned source of water available to the supplier. System Supplies Section 6.2.2 xx
Section 6.2.2 10631(b)(4)(A)
Indicate whether a groundwater sustainability plan or groundwater management plan has been adopted by the water supplier or if there is any other specific authorization for groundwater management. Include a copy of the plan or authorization.
System Supplies Section 6.2.2
xx Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. System Supplies Section 6.2.2 xx Section 6.2.2 10631(b)(4)(B) Indicate if the basin has been adjudicated and include a copy of the court order or decree and a description of the amount of water the supplier has the legal right to pump. System Supplies Section 6.2.2xx Section 6.2.2.1 10631(b)(4)(B)
For unadjudicated basins, indicate whether or not the department has identified the basin as a high or medium priority. Describe efforts by the supplier to coordinate with sustainability or groundwater agencies to achieve sustainable groundwater conditions.
System Supplies Section 6.2.2
xx Section 6.2.2.4 10631(b)(4)(C) Provide a detailed description and analysis of the location, amount, and sufficiency of groundwater pumped by the urban water supplier for the past five years System Supplies Section 6.2.2 xx Section 6.2.2 10631(b)(4)(D) Provide a detailed description and analysis of the amount and location of groundwater that is projected to be pumped. System Supplies Section 6.2.9 xx Section 6.2.7 10631(c) Describe the opportunities for exchanges or transfers of water on a short-term or long- term basis. System Supplies Section 6.2.7 xx Section 6.2.5 10633(b) Describe the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project. System Supplies (Recycled Water) Section 6.2.5 xx Section 6.2.5 10633(c) Describe the recycled water currently being used in the supplier's service area. System Supplies (Recycled Water) Section 6.2.5xx Section 6.2.5 10633(d) Describe and quantify the potential uses of recycled water and provide a determination of the technical and economic feasibility of those uses. System Supplies (Recycled Water) Section 6.2.5xx Section 6.2.5 10633(e)
Describe the projected use of recycled water within the supplier's service area at the end of 5, 10, 15, and 20 years, and a description of the actual use of recycled water in comparison to uses previously projected.
System Supplies (Recycled Water) Section 6.2.5
xx
Section 6.2.5 10633(f) Describe the actions which may be taken to encourage the use of recycled water and the projected results of these actions in terms of acre-feet of recycled water used per year. System Supplies (Recycled Water) Section 6.2.5 xx Section 6.2.5 10633(g) Provide a plan for optimizing the use of recycled water in the supplier's service area. System Supplies (Recycled Water) Section 6.2.5 xx Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply.System Supplies Section 6.2.6 xx Section 6.2.5 10633(a) Describe the wastewater collection and treatment systems in the supplier’s service area with quantified amount of collection and treatment and the disposal methods. System Supplies (Recycled Water) Section 6.2.5 xx
Section 6.2.8, Section 6.3.7 10631(f)
Describe the expected future water supply projects and programs that may be undertaken by the water supplier to address water supply reliability in average, single-dry, and for a period of drought lasting 5 consecutive water years.
System Supplies Section 6.2.8
xx Section 6.4 and Appendix O 10631.2(a) The UWMP must include energy information, as stated in the code, that a supplier can readily obtain. System Suppliers, Energy Intensity Section 6.3 xx
Section 7.2 10634 Provide information on the quality of existing sources of water available to the supplier and the manner in which water quality affects water management strategies and supply reliability Water Supply Reliability Assessment Section 7.1.4 xx Section 7.2.4 10620(f) Describe water management tools and options to maximize resources and minimize the need to import water from other regions. Water Supply Reliability Assessment Section 7.1 xx
Section 7.3 10635(a)
Service Reliability Assessment: Assess the water supply reliability during normal, dry, and a drought lasting five consecutive water years by comparing the total water supply sources available to the water supplier with the total projected water use over the next 20 years.
Water Supply Reliability Assessment Section 7.1
xx Section 7.3 10635(b) Provide a drought risk assessment as part of information considered in developing the demand management measures and water supply projects. Water Supply Reliability Assessment Section 7.2 xx
Section 7.3 10635(b)(1)
Include a description of the data, methodology, and basis for one or more supply shortage conditions that are necessary to conduct a drought risk assessment for a drought period that lasts 5 consecutive years.
Water Supply Reliability Assessment Section 7.2
xx Section 7.3 10635(b)(2) Include a determination of the reliability of each source of supply under a variety of water shortage conditions. Water Supply Reliability Assessment Section 7.1 xx Section 7.3 10635(b)(3) Include a comparison of the total water supply sources available to the water supplier with the total projected water use for the drought period. Water Supply Reliability Assessment Section 7.2
Retail Wholesale
2020 Guidebook Location Water Code Section Summary as Applies to UWMP Subject 2020 UWMP Location (Optional Column for Agency Review Use) xx
Section 7.3 10635(b)(4)
Include considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.
Water Supply Reliability Assessment Section 7.2
xx Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below. Water Shortage Contingency Planning WSCP xx Chapter 8 10632(a)(1) Provide the analysis of water supply reliability (from Chapter 7 of Guidebook) in the WSCP Water Shortage Contingency Planning WSCP, Section 1xx Section 8.10 10632(a)(10)
Describe reevaluation and improvement procedures for monitoring and evaluation the water shortage contingency plan to ensure risk tolerance is adequate and appropriate water shortage mitigation strategies are implemented.
Water Shortage Contingency Planning WSCP, Section 2
xx Section 8.2 10632(a)(2)(A) Provide the written decision-making process and other methods that the supplier will use each year to determine its water reliability.
Water Shortage Contingency Planning WSCP, Section 2
xx Section 8.2 10632(a)(2)(B) Provide data and methodology to evaluate the supplier’s water reliability for the current year and one dry year pursuant to factors in the code. Water Shortage Contingency Planning WSCP, Section 2xx Section 8.3 10632(a)(3)(A)
Define six standard water shortage levels of 10, 20, 30, 40, 50 percent shortage and greater than 50 percent shortage. These levels shall be based on supply conditions, including percent reductions in supply, changes in groundwater levels, changes in surface elevation, or other conditions. The shortage levels shall also apply to a catastrophic interruption of supply.
Water Shortage Contingency Planning WSCP, Section 3
xx Section 8.3 10632(a)(3)(B) Suppliers with an existing water shortage contingency plan that uses different water shortage levels must cross reference their categories with the six standard categories. Water Shortage Contingency Planning WSCP, Section 3 xx Section 8.4 10632(a)(4)(A) Suppliers with water shortage contingency plans that align with the defined shortage levels must specify locally appropriate supply augmentation actions.
Water Shortage Contingency Planning WSCP, Section 4
xx Section 8.4 10632(a)(4)(B) Specify locally appropriate demand reduction actions to adequately respond to shortages. Water Shortage Contingency Planning WSCP, Section 4xx Section 8.4 10632(a)(4)(C) Specify locally appropriate operational changes. Water Shortage Contingency Planning WSCP, Section 4xx Section 8.4 10632(a)(4)(D) Specify additional mandatory prohibitions against specific water use practices that are in addition to state-mandated prohibitions are appropriate to local conditions. Water Shortage Contingency Planning WSCP, Section 4xx Section 8.4 10632(a)(4)(E) Estimate the extent to which the gap between supplies and demand will be reduced by implementation of the action. Water Shortage Contingency Planning WSCP, Section 4xx Section 8.4.6 10632.5 The plan shall include a seismic risk assessment and mitigation plan. Water Shortage Contingency Plan WSCP, Section 4.6xx Section 8.5 10632(a)(5)(A) Suppliers must describe that they will inform customers, the public and others regarding any current or predicted water shortages. Water Shortage Contingency Planning WSCP, Section 5xx Section 8.5 and 8.6 10632(a)(5)(B) 10632(a)(5)(C) Suppliers must describe that they will inform customers, the public and others regarding any shortage response actions triggered or anticipated to be triggered and other relevant communications. Water Shortage Contingency Planning WSCP, Section 5 x Section 8.6 10632(a)(6) Retail supplier must describe how it will ensure compliance with and enforce provisions of the WSCP. Water Shortage Contingency Planning WSCP, Section 6 x Section 8.7 10632(a)(7)(A) Describe the legal authority that empowers the supplier to enforce shortage response actions. Water Shortage Contingency Planning WSCP, Section 7 xx Section 8.7 10632(a)(7)(B) Provide a statement that the supplier will declare a water shortage emergency Water Code Chapter 3. Water Shortage Contingency Planning WSCP, Section 7xx Section 8.7 10632(a)(7)(C) Provide a statement that the supplier will coordinate with any city or county within which it provides water for the possible proclamation of a local emergency.
Water Shortage Contingency Planning WSCP, Section 7
xx Section 8.8 10632(a)(8)(A) Describe the potential revenue reductions and expense increases associated with activated shortage response actions. Water Shortage Contingency Planning WSCP, Section 8xx Section 8.8 10632(a)(8)(B) Provide a description of mitigation actions needed to address revenue reductions and expense increases associated with activated shortage response actions. Water Shortage Contingency Planning WSCP, Section 8x Section 8.8 10632(a)(8)(C) Retail suppliers must describe the cost of compliance with Water Code Chapter 3.3: Excessive Residential Water Use During Drought Water Shortage Contingency Planning WSCP, Section 8x Section 8.9 10632(a)(9)
Retail suppliers must describe the monitoring and reporting requirements and procedures that ensure appropriate data is collected, tracked, and analyzed for purposes of monitoring customer compliance.
Water Shortage Contingency Planning WSCP, Section 8
x Section 8.11 10632(b) Analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas. Water Shortage Contingency Planning WSCP, Section 11 xx
Sections 8.12 and 10.4 10635(c)
Provide supporting documentation that Water Shortage Contingency Plan has been, or will be, provided to any city or county within which it provides water, no later than 30 days after the submission of the plan to DWR.
Plan Adoption, Submittal, and Implementation WSCP, Section 12 xx Section 8.12 10632(c) Make available the Water Shortage Contingency Plan to customers and any city or county where it provides water within 30 after adopted the plan. Water Shortage Contingency Planning WSCP, Section 12
Retail Wholesale
2020 Guidebook Location Water Code Section Summary as Applies to UWMP Subject 2020 UWMP Location (Optional Column for Agency Review Use) x
Sections 9.1 and 9.3 10631(e)(2) Wholesale suppliers shall describe specific demand management measures listed in code, their distribution system asset management program, and supplier assistance program. Demand Management Measures Section 9.1 x
Sections 9.2 and 9.3 10631(e)(1)
Retail suppliers shall provide a description of the nature and extent of each demand management measure implemented over the past five years. The description will address specific measures listed in code.
Demand Management Measures Section 9.2 and 9.3
x Chapter 10 10608.26(a) Retail suppliers shall conduct a public hearing to discuss adoption, implementation, and economic impact of water use targets (recommended to discuss compliance). Plan Adoption, Submittal, and Implementation Section 10.3 xx
Section 10.2.1 10621(b)
Notify, at least 60 days prior to the public hearing, any city or county within which the supplier provides water that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan. Reported in Table 10-1.
Plan Adoption, Submittal, and Implementation Section 10.2 xx Section 10.4 10621(f) Each urban water supplier shall update and submit its 2020 plan to the department by July 1, 2021. Plan Adoption, Submittal, and Implementation Section 10.3 xx
Sections 10.2.2, 10.3, and 10.5 10642
Provide supporting documentation that the urban water supplier made the plan and contingency plan available for public inspection, published notice of the public hearing, and held a public hearing about the plan and contingency plan.
Plan Adoption, Submittal, and Implementation Section 10.2 xx
Section 10.2.2 10642 The water supplier is to provide the time and place of the hearing to any city or county within which the supplier provides water. Plan Adoption, Submittal, and Implementation Section 10.2 xx
Section 10.3.2 10642 Provide supporting documentation that the plan and contingency plan has been adopted as prepared or modified.
Plan Adoption, Submittal, and Implementation Section 10.3 xx Section 10.4 10644(a) Provide supporting documentation that the urban water supplier has submitted this UWMP to the California State Library. Plan Adoption, Submittal, and Implementation Section 10.4xx Section 10.4 10644(a)(1) Provide supporting documentation that the urban water supplier has submitted this UWMP to any city or county within which the supplier provides water no later than 30 days after adoption. Plan Adoption, Submittal, and Implementation Section 10.4 xx Sections 10.4.1 and 10.4.2 10644(a)(2) The plan, or amendments to the plan, submitted to the department shall be submitted electronically. Plan Adoption, Submittal, and Implementation Section 10.4 xx
Section 10.5 10645(a)
Provide supporting documentation that, not later than 30 days after filing a copy of its plan with the department, the supplier has or will make the plan available for public review during normal business hours.
Plan Adoption, Submittal, and Implementation Section 10.5 xx
Section 10.5 10645(b)
Provide supporting documentation that, not later than 30 days after filing a copy of its water shortage contingency plan with the department, the supplier has or will make the plan available for public review during normal business hours.
Plan Adoption, Submittal, and Implementation Section 10.5 xx Section 10.6 10621(c) If supplier is regulated by the Public Utilities Commission, include its plan and contingency plan as part of its general rate case filings. Plan Adoption, Submittal, and Implementation Section 10.6 xx Section 10.7.2 10644(b) If revised, submit a copy of the water shortage contingency plan to DWR within 30 days of adoption. Plan Adoption, Submittal, and Implementation Section 10.7
B
Appendix B: DWR
Standard UWMP Tables
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2020
Volume of
Water Supplied
2020 *
CA3310009 Eastern Municipal
Water District 155,561 84,673
155,561 84,673
Submittal Table 2‐1 Retail Only: Public Water Systems
NOTES:
TOTAL
Add additional rows as needed
* Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Water Supplier is also a member
of a RUWMP
Water Supplier is also a member
of a Regional Alliance
Regional Urban Water Management Plan
(RUWMP)
Submittal Table 2‐2: Plan Identification
NOTES:
Individual UWMP
Name of RUWMP or Regional Alliance
if applicable
(select from drop down list)
Select
Only One Type of Plan
Supplier is a wholesaler
Supplier is a retailer
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Unit AF
NOTES:
Submittal Table 2‐3: Supplier Identification
Type of Supplier (select one or both)
Fiscal or Calendar Year (select one)
If using fiscal years provide month and date that the
fiscal year begins (mm/dd)
Units of measure used in UWMP * (select from drop down)
* Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Submittal Table 2‐4 Retail: Water Supplier Information Exchange The retail Supplier has informed the following wholesale supplier(s) of projected water use in accordance with Water Code Section 10631.
Wholesale Water Supplier Name
Add additional rows as needed
Metropolitan Water District of Southern California
NOTES:
Supplier has informed more than 10 other water suppliers of water supplies available in accordance with Water Code Section 10631. Completion of the table below is optional. If not completed, include a list of the water suppliers that were informed.
Provide page number for location of the list.
Supplier has informed 10 or fewer other water suppliers of water supplies available in accordance with Water Code Section 10631.
Complete the table below.
NOTES:
Submittal Table 2‐4 Wholesale: Water Supplier Information Exchange (select one) Water Supplier Name
City of Hemet
Rancho California Water District
Add additional rows as needed
Western Municipal Water District
Nuevo Water Company
Lake Hemet Municipal Water District
City of San Jacinto
City of Perris
2020 2025 2030 2035 2040 2045(opt)
603,950 649,700 695,500 741,300 774,300 807,200
Submittal Table 3‐1 Retail: Population ‐ Current and Projected Population
Served
NOTES:
2020 2025 2030 2035 2040 2045(opt)
255,210 271,500 287,800 304,000 314,000 324,100
Submittal Table 3‐1 Wholesale: Population ‐ Current and Projected Population
Served
NOTES:
Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be
recognized by the WUEdata online
submittal tool
Additional Description
(as needed)
Level of Treatment
When Delivered
Drop down list
Volume2
Single Family Drinking Water 52,162
Multi‐Family Drinking Water 6,535
Commercial Drinking Water 4,267
Industrial Drinking Water 571
Institutional/Governmental Drinking Water 1,629
Landscape Drinking Water 8,155
Agricultural irrigation Drinking Water 1,114
Agricultural irrigation Raw Water 446
Other Drinking Water 1,287
Other Systems losses & unbilled,
authorized consumption Drinking Water 8,507
84,673
Submittal Table 4‐1 Retail: Demands for Potable and Non‐Potable 1 Water ‐ Actual 2020 Actual
NOTES:
TOTAL
Add additional rows as needed
1 Recycled water demands are NOT reported in this table. Recycled water demands are reported in Table 6‐4. 2 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Use Type
Drop down list
May select each use multiple times
These are the only use types that will be
recognized by the WUE data online submittal tool
Additional Description
(as needed)
Level of
Treatment When
Delivered
Drop down list
Volume2
Groundwater recharge Imported water recharge to the
Hemet/San Jacinto Basin
Raw Water 6,467
Sales to other agencies City of Perris Water System Drinking Water 1,685 Sales to other agencies Western Municipal Water District Murrieta Division Drinking Water 1,809
Sales to other agencies Nuevo Water Company Drinking Water 409 Sales to other agencies Rancho California Water District Drinking Water 11,105 Sales to other agencies Rancho California Water District Raw Water 13,923 Sales to other agencies City of Hemet Drinking Water 0
Sales to other agencies City of San Jacinto Drinking Water 0 Sales to other agencies Lake Hemet Municipal Water District Raw Water 986 36,384
Submittal Table 4‐1 Wholesale: Demands for Potable and Non‐Potable1Water ‐ Actual 2020 Actual
NOTES:
TOTAL
Add additional rows as needed
1 Recycled water demands are NOT reported in this table. Recycled water demands are reported in Table 6‐4. 2 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be recognized by the WUEdata online submittal tool
2025 2030 2035 2040 2045
(opt)
Single Family 66,900 71,700 76,700 80,500 84,000
Multi‐Family 8,500 9,100 9,700 10,200 10,600
Commercial 6,100 6,500 7,000 7,300 7,600
Industrial 600 600 700 700 700
Institutional/Governmental 2,700 2,900 3,100 3,200 3,400 Landscape 8,400 7,600 6,800 6,200 5,500
Agricultural irrigation Potable Water 1,500 1,500 1,500 1,500 1,500 Agricultural irrigation Raw Water 500 500 500 500 500
Other 00000
Other System losses & unbilled,
authorized consumption 7,400 7,900 8,400 8,800 9,200
102,600 108,300 114,400 118,900 123,000
Projected Water Use2
Report To the Extent that Records are Available
Submittal Table 4‐2 Retail: Use for Potable and Non‐Potable1 Water ‐ Projected Additional Description
(as needed)
NOTES:
TOTAL
Add additional rows as needed
1 Recycled water demands are NOT reported in this table. Recycled water demands are reported in Table 6‐4. 2 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be recognized
by the WUEdata online submittal tool.
2025 2030 2035 2040
2045
(opt)
Groundwater recharge Imported water recharge to
the Hemet/San Jacinto Basin 7,500 7,500 7,500 7,500 7,500 Sales to other agencies City of Perris Water System 1,800 1,900 2,100 2,200 2,300 Sales to other agencies Western Municipal Water
District Murrieta Division 1,000 1,300 1,600 2,000 2,300 Sales to other agencies Nuevo Water Company 500 1,000 1,100 1,200 1,200 Sales to other agencies Rancho California Water
District (Potable) 27,100 20,000 21,000 15,200 16,500
Sales to other agencies Rancho California Water
District (Raw) 15,200 15,200 15,200 22,300 22,300
Sales to other agencies City of Hemet 00000
Sales to other agencies City of San Jacinto 00000
Sales to other agencies Lake Hemet Municipal Water
District 5,100 5,500 5,900 6,300 6,700
58,200 52,400 54,400 56,700 58,800
Add additional rows as needed
Submittal Table 4‐2 Wholesale: Use for Potable and Raw Water 1 ‐ Projected Additional Description
(as needed)
Projected Water Use 2
Report To the Extent that Records are Available
NOTES:
TOTAL
1 Recycled water demands are NOT reported in this table. Recycled water demands are reported in Table 6‐4. 2 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3. 2020 2025 2030 2035 2040 2045 (opt)
Potable Water, Raw, Other
Non‐potable
From Tables 4‐1R and 4‐2 R
84,673 102,600 108,300 114,400 118,900 123,000
Recycled Water Demand1
From Table 6‐4 31,243 43,330 49,020 54,500 59,800 64,100 Optional Deduction of
Recycled Water Put Into Long‐
Term Storage2
TOTAL WATER USE 115,916 145,930 157,320 168,900 178,700 187,100 Submittal Table 4‐3 Retail: Total Water Use (Potable and Non‐Potable) NOTES:
1 Recycled water demand fields will be blank until Table 6‐4 is complete 2 Long term storage means water placed into groundwater or surface storage that is not removed from storage in the same year. Supplier may deduct recycled water placed in long‐term storage from their reported demand. This value is manually entered into Table 4‐3. 2020 2025 2030 2035 2040
2045
(opt)
Potable and Raw Water
From Tables 4‐1W and 4‐2W 36,384 58,200 52,400 54,400 56,700 58,800 Recycled Water Demand*
From Table 6‐4W 1,285 4,770 5,180 5,600 5,600 5,600
TOTAL WATER DEMAND 37,669 62,970 57,580 60,000 62,300 64,400 Submittal Table 4‐3 Wholesale: Total Water Use (Potable and Non‐Potable) NOTES:
*Recycled water demand fields will be blank until Table 6‐4 is complete.
Reporting Period Start Date
(mm/yyyy) Volume of Water Loss 1,2
07/2015 8,865
07/2016 6,221
07/2017 4,321
07/2018 7,360
07/2019 5,096
Submittal Table 4‐4 Retail: Last Five Years of Water Loss Audit Reporting
NOTES:
1 Taken from the field "Water Losses" (a combination of apparent losses and real losses) from the AWWA worksheet. 2 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Are Future Water Savings Included in Projections?
(Refer to Appendix K of UWMP Guidebook)
Drop down list (y/n) Yes
If "Yes" to above, state the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.
Section 4.1.1
Are Lower Income Residential Demands Included In Projections? Drop down list (y/n) Yes
Submittal Table 4‐5 Retail Only: Inclusion in Water Use Projections NOTES:
10‐15
year
1999 2008 197
5 Year 2003 2007 195
Submittal Table 5‐1 Baselines and Targets Summary
From SB X7‐7 Verification Form
Retail Supplier or Regional Alliance Only
*All cells in this table should be populated manually from the supplier's SBX7‐7 Verification Form and reported in Gallons per Capita per Day (GPCD) NOTES:
176
Baseline
Period Start Year * End Year *
Average
Baseline
GPCD*
Confirmed
2020 Target*
Actual
2020 GPCD*
2020 TOTAL
Adjustments*
Adjusted 2020
GPCD*
(Adjusted if
applicable)
125 0 0 176 Y
NOTES:
2020 Confirmed
Target GPCD*
Did Supplier
Achieve
Targeted
Reduction for
2020? Y/N
2020 GPCD
Submittal Table 5‐2: 2020 Compliance From SB X7‐7 2020 Compliance Form
Retail Supplier or Regional Alliance Only
*All cells in this table should be populated manually from the supplier's SBX7‐7 2020 Compliance Form and reported in Gallons per Capita per Day (GPCD) Groundwater Type
Drop Down List
May use each category
multiple times
Location or Basin Name 2016* 2017* 2018* 2019* 2020*
Alluvial Basin
Hemet/San Jacinto Basin
portion of the San Jacinto
Groundwater Basin (DWR 8‐
05)
6,171 6,498 6,367 5,213 9,383
Alluvial Basin
Pumping of EMWD share of
unused Soboba Settlement
Water recharged in the
Hemet/San Jacinto Basin
portion of the San Jacinto
Groundwater Basin (DWR 8‐
05)
3,585 3,864 3,850 1,508 2,625
Alluvial Basin
West San Jacinto Basin portion
of the San Jacinto
Groundwater Basin (DWR 8‐
05)
4,429 2,908 3,307 1,323 2,402
Alluvial Basin
Brackish Groundwater from
the West San Jacinto Basin
portion of the San Jacinto
Groundwater Basin (DWR 8‐
05)
10,254 8,585 8,547 9,801 9,565
24,439 21,855 22,071 17,845 23,975
Add additional rows as needed
Submittal Table 6‐1 Retail: Groundwater Volume Pumped
Supplier does not pump groundwater.
The supplier will not complete the table below.
NOTES:
TOTAL
All or part of the groundwater described below is desalinated. * Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Name of
Wastewater
Collection
Agency
Wastewater
Volume Metered
or Estimated?
Drop Down List
Volume of
Wastewater
Collected from
UWMP Service
Area 2020 *
Name of
Wastewater
Treatment
Agency Receiving
Collected
Wastewater
Treatment Plant
Name
Is WWTP Located
Within UWMP
Area?
Drop Down List
Is WWTP
Operation
Contracted to a
Third Party?
(optional)
Drop Down List
Eastern
Municipal Water
District
Metered 8,194
Eastern
Municipal Water
District
San Jacinto
Valley RWRF
Yes No
Eastern
Municipal Water
District
Metered 11,507
Eastern
Municipal Water
District
Moreno Valley
RWRF
Yes No
Eastern
Municipal Water
District
Metered 16,090
Eastern
Municipal Water
District
Temecula Valley
RWRF
Yes No
Eastern
Municipal Water
District
Metered 17,282
Eastern
Municipal Water
District
Perris Valley
RWRF
Yes No
53,073
Total Wastewater Collected from
Service Area in 2020:
NOTES:
* Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3 .
Submittal Table 6‐2 Retail: Wastewater Collected Within Service Area in 2020 There is no wastewater collection system. The supplier will not complete the table below.
Percentage of 2020 service area covered by wastewater collection system (optional) Percentage of 2020 service area population covered by wastewater collection system (optional) Wastewater Collection Recipient of Collected Wastewater Wastewater
Treated
Discharged
Treated
Wastewater
Recycled
Within Service
Area
Recycled
Outside of
Service Area
Instream Flow
Permit
Requirement
San Jacinto Valley
RWRF
Reach 4
Dissipater
Temescal
Creek
River or creek
outfall No Tertiary 7,441 436 6,319
Moreno Valley
RWRF
Reach 4
Dissipater
Temescal
Creek
River or creek
outfall No Tertiary 10,451 1,600 8,874
Temecula Valley
RWRF
Reach 4
Dissipater
Temescal
Creek
River or creek
outfall No Tertiary 14,612 1,600 12,407
Perris Valley
RWRF
Reach 4
Dissipater
Temescal
Creek
River or creek
outfall No Tertiary 15,696 3,637 13,327
Total 48,200 7,273 40,927 0 0
1 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3. 2 If the Wastewater Discharge ID Number is not available to the UWMP preparer, access the SWRCB CIWQS regulated facility website at https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/CiwqsReportServlet?inCommand=reset&reportName=RegulatedFacility NOTES:
Submittal Table 6‐3 Retail: Wastewater Treatment and Discharge Within Service Area in 2020 No wastewater is treated or disposed of within the UWMP service area. The supplier will not complete the table below.
Wastewater
Treatment
Plant Name
Discharge
Location
Name or
Identifier
Discharge
Location
Description
Wastewater
Discharge ID
Number
(optional) 2
Method of
Disposal
Drop down list
Does This
Plant Treat
Wastewater
Generated
Outside the
Service Area?
Drop down list
Treatment
Level
Drop down list
2020 volumes 1
Potential Beneficial
Uses of Recycled
Water (Describe)
Amount of Potential
Uses of Recycled Water
(Quantity)
Include volume units 1
General Description
of 2020 Uses
Level of
Treatment
Drop down list
2020 1 2025 1 20301 20351 20401 20451 (opt)
Tertiary 21,178 22,240 24,640 20,000 20,000 20,000
Tertiary 4,275 7,600 10,080 10,600 11,100 11,100
Tertiary 1,457 2,750 3,130 3,500 3,500 3,500
Tertiary 0 440 870 1,310 1,310 1,310
Tertiary 1,029 1,400 1,400 1,400 1,400 1,400
Tertiary 3,231 4,500 4,500 4,500 4,500 4,500
Advanced 4,100 4,100 12,300 12,300 12,300
Construction Tertiary 73 300 300 300 300 300
Split between
agricultural and
landscape usage,
proportion to be
determined in future
Tertiary 590 5,390 9,690
Total: 31,243 43,330 49,020 54,500 59,800 64,100
NOTES:
0 N/A
Agricultural irrigation
Landscape irrigation (exc golf courses)
Commercial use
Golf course irrigation
Supplemental Water Added in 2020 (volume) Include units Source of 2020 Supplemental Water
Beneficial Use Type Insert additional rows if needed.
Geothermal and other energy production
Other (Description Required)
2020 Internal Reuse
1 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Other (Description Required)
Reservoir water augmentation (IPR)
Direct potable reuse
Submittal Table 6‐4 Retail: Recycled Water Direct Beneficial Uses Within Service Area Recycled water is not used and is not planned for use within the service area of the supplier.
The supplier will not complete the table below.
Name of Supplier Producing (Treating) the Recycled Water:
Name of Supplier Operating the Recycled Water Distribution System:
Eastern Municipal Water District
Eastern Municipal Water District
Wetlands or wildlife habitat
Groundwater recharge (IPR)
Industrial use
Seawater intrusion barrier
Recreational impoundment
Name of Receiving Supplier or Direct
Use by Wholesaler
Level of Treatment
Drop down list
2020* 2025* 2030* 2035* 2040* 2045* (opt)
Elsinore Valley Municipal Water
District Tertiary 533 1,120 1,120 1,120 1,120 1,120
Rancho California Water District Tertiary 752 3,650 4,060 4,480 4,480 4,480 1,285 4,770 5,180 5,600 5,600 5,600
Submittal Table 6‐4 Wholesale: Current and Projected Retailers Provided Recycled Water Within Service Area NOTES:
Recycled water is not directly treated or distributed by the Supplier. The Supplier will not complete the table below.
Total
Add additional rows as needed
* Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3. 2015 Projection for
2020 1 2020 Actual Use1
18,784 21,178
5,124 4,275
2,375 1,457
300 0
2,912 0
1,250 1,029
4,500 3,231
73 35,245 31,243
Submittal Table 6‐5 Retail: 2015 UWMP Recycled Water Use Projection Compared to 2020 Actual Recycled water was not used in 2015 nor projected for use in 2020.
The supplier will not complete the table below. If recycled water was not used in 2020, and was not predicted to be in 2015, then check the box and do not complete the table.
Beneficial Use Type
Agricultural irrigation
Reservoir water augmentation (IPR)
Landscape irrigation (exc golf courses)
Insert additional rows as needed.
Golf course irrigation
Commercial use
Industrial use
Geothermal and other energy production
Seawater intrusion barrier
Recreational impoundment
Wetlands or wildlife habitat
Groundwater recharge (IPR)
Total
Other (Description Required) (Construction)
Direct potable reuse
NOTE:
1 Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Name of Receiving Supplier or Direct Use by
Wholesaler 2015 Projection for 2020* 2020 Actual Use*
Elsinore Valley Municipal Water District 289 533
Rancho California Water District 1,367 752
Total 1,656 1,285
Submittal Table 6‐5 Wholesale: 2015 UWMP Recycled Water Use Projection Compared to 2020 Actual Recycled water was not used or distributed by the supplier in 2015, nor projected for use or distribution in 2020.
The wholesale supplier will not complete the table below.
NOTES:
Add additional rows as needed
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Name of Action Description
Planned
Implementation
Year
Expected Increase in
Recycled Water Use *
Mandatory Recycled
Water Use Ordinance
The ordinance requiring new and existing
customers to use recycled water for
appropriate permitted uses when it is
available
Ongoing
Rate Incentives
EMWD prices recycled water below the cost
of potable water for both municipal and
agricultural use
Ongoing
Water Supply
Assessments
Assessments condition all major new
developments to use recycled water as a
condition of service where it is available
and permitted
Ongoing
Public Education
EMWD has a recycled water public
education campaign to promote the
benefits of recycled water
Ongoing
Facilities Financing
EMWD helps arrange or provide financing
for the construction of facilities needed to
convert potable demands to recycled water
Ongoing
0 NOTES: EMWD does not have data to support a projection of how much increased recycled water sales will result from each of the listed methods of encouraging recycled water use. Historically, the low cost of recycled water was the primary inducement for agricultural customers to use recycled water in‐lieu of groundwater. However, as municipal customers continue to replace agriculture, it is reasonable to assume that the mandatory provisions of EMWD’s Recycled Water Use Ordinance will play a major role in program expansion.
Submittal Table 6‐6 Retail: Methods to Expand Future Recycled Water Use Supplier does not plan to expand recycled water use in the future. Supplier will not complete the table below but will provide narrative explanation.
Provide page location of narrative in UWMP
Add additional rows as needed
Total
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Drop Down List (y/n) If Yes, Supplier Name
SARCCUP / San Jacinto
Enhanced Recharge and
Recovery Program
(ERRP) Phase I
Yes
Inland Empire
Utilities Agencies,
Orange County
Water District, San
Bernardino Valley
Municipal Water
District, Western
Municipal Water
District, DWR
Project to be
completed in
phases and
includes
conjunctive use of
groundwater
recharge
2025 Multi‐Dry Year 7,000
Perris North Basin
Groundwater
Contamination
Prevention and
Remediation Program
Yes
SWRCB (funding
partner), WMWD
Combined MV and
North Perris GW
Development, and
wells near MARB
2023 Average Year 6,450
Perris II Desalter Yes Army Corps of
Engineers
Expected to be
online mid‐2021 2021 Average Year 5,400
Purified Water
Replenishment, Phase I
(IPR)
Yes N/A
Advanced treated
recycled water
used to recharge
the Hemet/San
Jacinto Basin
2024 Average Year 4,000
Purified Water
Replenishment, Phase II
(IPR)
Yes N/A
Advanced treated
recycled water
used to recharge
the Hemet/San
Jacinto Basin ‐
could be increased
to 11,000 AFY if
brine issues are
resolved
2035 Average Year 8,000
San Jacinto Enhanced
Recharge and Recovery
Program (ERRP) Phase II
Yes
Project to be
completed in
phases and
includes
conjunctive use of
groundwater
recharge
2030 ‐ 2035 Multi‐Dry Year 7,500
San Jacinto Enhanced
Recharge and Recovery
Program (ERRP) Phase III
No
Project to be
completed in
phases and
includes
conjunctive use of
groundwater
recharge
2040 ‐ 2050 Multi‐Dry Year TBD
No expected future water supply projects or programs that provide a quantifiable increase to the agency's water supply. Supplier will not complete the table below.
Some or all of the supplier's future water supply projects or programs are not compatible with this table and are described in a narrative format.
Submittal Table 6‐7 Retail: Expected Future Water Supply Projects or Programs Joint Project with other suppliers?
NOTES:
Name of Future Projects
or Programs
Description
(if needed)
Planned
Implementation
Year
Expected Increase
in Water Supply
to Supplier*
This may be a range
Planned for Use in
Year Type
Drop Down List
Provide page location of narrative in the UWMP
Add additional rows as needed
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Water Supply
Drop down list
May use each category multiple
times.These are the only water
supply categories that will be
recognized by the WUEdata online
submittal tool
Actual Volume* Water Quality
Drop Down List
Total Right or Safe
Yield* (optional)
Purchased or Imported Water
Treated water
purchased from
Metropolitan
44,726 Drinking Water
Purchased or Imported Water
Untreated water
purchased from
Metropolitan, treated at
EMWD Filtration Plants
17,584 Drinking Water
Purchased or Imported Water
EMWD share of unused
Soboba Settlement
Water
2,625 Drinking Water
Purchased or Imported Water
Raw Water for
Agriculture 642
Other Non‐
Potable Water
Groundwater (not desalinated)
Potable water pumped
from the Hemet/San
Jacinto Basin portion of
the San Jacinto
Groundwater Basin
(DWR 8‐05)
9,383 Drinking Water
Groundwater (not desalinated)
Potable water pumped
from the West San
Jacinto Basin portion of
the San Jacinto
Groundwater Basin
(DWR 8‐05)
2,402 Drinking Water
Groundwater (not desalinated)
Brackish water pumped
from the West San
Jacinto Basin portion of
the San Jacinto
Groundwater Basin
(DWR 8‐05) used to
supplement the recycled
water system
0 Other Non‐
Potable Water
Desalinated Water ‐
Groundwater
Desalinated water
pumped from the West
San Jacinto Basin
portion of the San
Jacinto Groundwater
Basin (DWR 8‐05)
7,310 Drinking Water
Recycled Water
Includes Storage Pond
Incidental Recharge /
Evaporation
39,642
Other Non‐
Potable Water
124,314 0
Submittal Table 6‐8 Retail: Water Supplies — Actual
Additional Detail on
Water Supply
2020
NOTES:
Add additional rows as needed
Total
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Water Supply
Drop down list
May use each category multiple
times.These are the only water supply
categories that will be recognized by
the WUEdata online submittal tool
Actual Volume* Water Quality
Drop Down List
Total Right or Safe
Yield* (optional)
Purchased or Imported Water
Treated Water
purchased from
Metropolitan
15,008 Drinking Water
Purchased or Imported Water
Raw Water purchased
from Metropolitan 14,909
Other Non‐
Potable Water
Purchased or Imported Water
Soboba Settlement
Water 6,467
Other Non‐
Potable Water
Recycled Water 1,285 Recycled Water
37,669 0
NOTES:
Total
Add additional rows as needed
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Submittal Table 6‐8 Wholesale: Water Supplies — Actual Additional Detail on
Water Supply
2020
Water Supply
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Purchased or Imported Water Metropolitan Treated/
Untreated 66,447 72,147 70,247 74,747 78,847
Groundwater (not desalinated) Pumped from the
Hemet/San Jacinto Basin 7,303 7,303 7,303 7,303 7,303
Groundwater (not desalinated) Pumped from the West
San Jacinto Basin 11,450 11,450 11,450 11,450 11,450
Desalinated Water ‐
Groundwater
Desalinated water from
the West San Jacinto
Basin
13,400 13,400 13,400 13,400 13,400
Recycled Water
Excludes Storage Pond
Incidental Recharge /
Evaporation
43,330 49,020 54,500 59,800 64,100
Other Purified Water
Replenishment (IPR) 4,000 4,000 12,000 12,000 12,000
145,930 0 157,320 0 168,900 0 178,700 0 187,100 0
NOTES
Submittal Table 6‐9 Retail: Water Supplies — Projected
Additional Detail on
Water Supply
Projected Water Supply *
Report To the Extent Practicable
2025 2030 2035 2040 2045 (opt)
Total
Drop down list
May use each category multiple
times. These are the only water
supply categories that will be
recognized by the WUEdata online
submittal tool
Add additional rows as needed
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
Drop down list
May use each category
multiple times. These are the
only water supply categories
that will be recognized by the
WUEdata online submittal
tool
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Reasonably
Available
Volume
Total Right or
Safe Yield
(optional)
Purchased or Imported
Water
Metropolitan Treated /
Untreated 50,700 44,900 46,900 49,200 51,300
Purchased or Imported
Water
Soboba Settlement
Water 7,500 7,500 7,500 7,500 7,500
Recycled Water 4,770 5,180 5,600 5,600 5,600
62,970 0 57,580 0 60,000 0 62,300 0 64,400 0
NOTES:
Submittal Table 6‐9 Wholesale: Water Supplies — Projected Additional Detail on
Water Supply
Projected Water Supply*
Report To the Extent Practicable
2025 2030 2035 2040 2045 (opt)
Total
Add additional rows as needed
Water Supply
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3. % of Average Supply
Average Year 1922‐2017 100%
Single‐Dry Year 1977 100%
Consecutive Dry Years 1st Year 1988 100%
Consecutive Dry Years 2nd Year 1989 100%
Consecutive Dry Years 3rd Year 1990 100%
Consecutive Dry Years 4th Year 1991 100%
Consecutive Dry Years 5th Year 1992 100%
Submittal Table 7‐1 Retail: Basis of Water Year Data (Reliability Assessment) Year Type
Base Year
If not using a calendar
year, type in the last
year of the fiscal,
water year, or range
of years, for example,
water year 2019‐
2020, use 2020
Available Supplies if
Year Type Repeats
Quantification of available supplies is not
compatible with this table and is provided
elsewhere in the UWMP. Location __________________________
Quantification of available supplies is provided in
this table as either volume only, percent only, or
both.
Volume Available *
NOTES:
Supplier may use multiple versions of Table 7‐1 if different water sources have different base years and the supplier chooses to report the base years for each water source separately. If a Supplier uses multiple versions of Table 7‐1, in the "Note" section of each table, state that multiple versions of Table 7‐1 are being used and identify the particular water source that is being reported in each table. *Units of measure (AF, CCF, MG ) must remain consistent throughout the UWMP as reported in Table 2‐3. % of Average Supply
Average Year 1922‐2017 100%
Single‐Dry Year 1977 100%
Consecutive Dry Years 1st Year 1988 100%
Consecutive Dry Years 2nd Year 1989 100%
Consecutive Dry Years 3rd Year 1990 100%
Consecutive Dry Years 4th Year 1991 100%
Consecutive Dry Years 5th Year 1992 100%
Submittal Table 7‐1 Wholesale: Basis of Water Year Data (Reliability Assessment) Year Type
Base Year
If not using a calendar
year, type in the last
year of the fiscal,
water year, or range of
years, for example,
water year 1999‐2000,
use 2000
Available Supplies if
Year Type Repeats
Quantification of available supplies is not
compatible with this table and is provided
elsewhere in the UWMP. Location __________________________
Quantification of available supplies is provided in
this table as either volume only, percent only, or
both.
Volume Available *
NOTES:
Supplier may use multiple versions of Table 7‐1 if different water sources have different base years and the supplier chooses to report the base years for each water source separately. If a supplier uses multiple versions of Table 7‐1, in the "Note" section of each table, state that multiple versions of Table 7‐1 are being used and identify the particular water source that is being reported in each table. Suppliers may create an additional worksheet for the additional tables.
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3. 2025 2030 2035 2040 2045 (Opt)
Supply totals
(autofill from Table 6‐9) 145,930 157,320 168,900 178,700 187,100 Demand totals
(autofill from Table 4‐3) 145,930 157,320 168,900 178,700 187,100 Difference
0 0 0 0 0
Submittal Table 7‐2 Retail: Normal Year Supply and Demand Comparison NOTES:
2025 2030 2035 2040 2045 (Opt)
Supply totals
(autofill from Table 6‐9) 62,970 57,580 60,000 62,300 64,400 Demand totals
(autofill fm Table 4‐3) 62,970 57,580 60,000 62,300 64,400 Difference 0 0 0 0 0
Submittal Table 7‐2 Wholesale: Normal Year Supply and Demand Comparison NOTES:
2025 2030 2035 2040 2045 (Opt)
Supply totals* 151,130 162,820 174,700 184,700 193,300
Demand totals* 151,130 162,820 174,700 184,700 193,300
Difference 0 0 0 0 0
Submittal Table 7‐3 Retail: Single Dry Year Supply and Demand Comparison NOTES:
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
2025 2030 2035 2040 2045 (Opt)
Supply totals* 64,770 59,080 61,600 63,600 65,900
Demand totals* 64,770 59,080 61,600 63,600 65,900
Difference 0 0 0 0 0
Submittal Table 7‐3 Wholesale: Single Dry Year Supply and Demand Comparison *Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3.
NOTES:
2025* 2030* 2035* 2040* 2045* (Opt)
Supply totals 151,130 162,820 174,700 184,700 193,300
Demand totals 151,130 162,820 174,700 184,700 193,300
Difference 0 0 0 0 0
Supply totals 132,700 143,300 153,700 162,500 170,300
Demand totals 132,700 143,300 153,700 162,500 170,300
Difference 0 0 0 0 0
Supply totals 134,900 145,500 155,500 164,100 171,900
Demand totals 134,900 145,500 155,500 164,100 171,900
Difference 0 0 0 0 0
Supply totals 137,100 147,600 157,400 165,700 173,500
Demand totals 137,100 147,600 157,400 165,700 173,500
Difference 0 0 0 0 0
Supply totals 140,200 150,800 160,000 168,000 175,800
Demand totals 140,200 150,800 160,000 168,000 175,800
Difference 0 0 0 0 0
Supply totals
Demand totals
Difference 0 0 0 0 0
Submittal Table 7‐4 Retail: Multiple Dry Years Supply and Demand Comparison First year
Second year
Third year
NOTES:
Fourth year
Fifth year
Sixth year
(optional)
*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2‐3. 2025* 2030* 2035* 2040* 2045* (Opt)
Supply totals 64,770 59,080 61,600 63,600 65,900
Demand totals 64,770 59,080 61,600 63,600 65,900
Difference 0 0 0 0 0
Supply totals 63,200 59,100 61,400 63,400 65,600
Demand totals 63,200 59,100 61,400 63,400 65,600
Difference 0 0 0 0 0
Supply totals 62,100 59,600 61,800 63,900 66,000
Demand totals 62,100 59,600 61,800 63,900 66,000
Difference 0 0 0 0 0
Supply totals 61,000 60,100 62,200 64,300 66,400
Demand totals 61,000 60,100 62,200 64,300 66,400
Difference 0 0 0 0 0
Supply totals 59,800 60,600 62,600 64,700 66,900
Demand totals 59,800 60,600 62,600 64,700 66,900
Difference 0 0 0 0 0
Supply totals
Demand totals
Difference 0 0 0 0 0
NOTES:
Fourth year
Fifth year
Sixth year
(optional)
*Units of measure (AF, CCF, MG) m ust remain consistent throughout the UWMP as reported in Table 2‐3.
Submittal Table 7‐4 Wholesale: Multiple Dry Years Supply and Demand Comparison First year
Second year
Third year
2021 Total
Total Water Use 177,900
Total Supplies 177,900
Surplus/Shortfall w/o WSCP Action 0
WSCP ‐ supply augmentation benefit
WSCP ‐ use reduction savings benefit
Revised Surplus/(shortfall) 0
Resulting % Use Reduction from WSCP action 0%
2022 Total
Total Water Use 185,400
Total Supplies 185,400
Surplus/Shortfall w/o WSCP Action 0
WSCP ‐ supply augmentation benefit
WSCP ‐ use reduction savings benefit 14,900
Revised Surplus/(shortfall) 14,900
Resulting % Use Reduction from WSCP action 8%
2023 Total
Total Water Use 194,400
Total Supplies 194,400
Surplus/Shortfall w/o WSCP Action 0
WSCP ‐ supply augmentation benefit
WSCP ‐ use reduction savings benefit 15,400
Revised Surplus/(shortfall) 15,400
Resulting % Use Reduction from WSCP action 8%
2024 Total
Total Water Use 209,400
Total Supplies 209,400
Surplus/Shortfall w/o WSCP Action 0
WSCP ‐ supply augmentation benefit
WSCP ‐ use reduction savings benefit 16,000
Revised Surplus/(shortfall) 16,000
Resulting % Use Reduction from WSCP action 8%
2025 Total
Total Water Use 217,500
Total Supplies 217,500
Surplus/Shortfall w/o WSCP Action 0
WSCP ‐ supply augmentation benefit
WSCP ‐ use reduction savings benefit 16,500
Revised Surplus/(shortfall) 16,500
Resulting % Use Reduction from WSCP action 8%
Submittal Table 7‐5: Five‐Year Drought Risk Assessment Tables to address Water Code Section 10635(b)
Planned WSCP Actions (use reduction and supply augmentation) Planned WSCP Actions (use reduction and supply augmentation) Planned WSCP Actions (use reduction and supply augmentation) Planned WSCP Actions (use reduction and supply augmentation) Planned WSCP Actions (use reduction and supply augmentation) Shortage
Level
Percent Shortage
Range
Shortage Response Actions
(Narrative description)
1 Up to 10% Supply watch. Customers will be asked to reduce up to 10% of demand voluntarily.
2 Up to 25% Supply alert. Customers will be asked to reduce 25% of demand voluntarily. 3 Up to 25% Mandatory Waste Reduction. At this stage efforts will be focused on a mandatory reduction of excessive water use.
4 Up to 50% Mandatory Outdoor Reduction. At this stage efforts will be focused on mandatory reduction of outdoor water use.
5 >50%
Severe shortage or catastrophic incident
Mandatory Indoor Reduction. At this stage efforts will be focused on mandatory reduction of indoor water use. This stage would only be implemented in response to a catastrophic loss of supplies requiring a 50 percent or more reduction in demand.
NOTES:
Submittal Table 8‐1
Water Shortage Contingency Plan Levels
Shortage
Level
Demand Reduction Actions
Drop down list
These are the only categories that will be accepted by the WUEdata online submittal tool. Select those that apply.
How much is this going to reduce the
shortage gap? Include units used (volume
type or percentage)
Additional Explanation or
Reference
(optional)
Penalty, Charge, or
Other
Enforcement?
For Retail Suppliers Only
Drop Down List
1 ‐ 5 Expand Public Information Campaign N/A No
1 Other ‐ Prohibit use of potable water for washing hard surfaces N/A Yes
1 Other ‐ Customers must repair leaks, breaks, and
malfunctions in a timely manner N/A Yes
1 Landscape ‐ Limit landscape irrigation to specific times N/A Yes 1 Landscape ‐ Prohibit certain types of landscape
irrigation N/A Yes
1 Landscape ‐ Restrict or prohibit runoff from landscape irrigation N/A Yes
1 Other water feature or swimming pool restriction N/A Yes 1 Other N/A Yes
1 Other N/A Yes
1 Landscape ‐ Other landscape restriction or prohibition N/A Yes 2 Landscape ‐ Other landscape restriction or prohibition Medium Yes 2 Other ‐ Customers must repair leaks, breaks, and
malfunctions in a timely manner Medium Yes
2 Other water feature or swimming pool restriction Low Yes 2 Other Medium Yes
3 Implement or Modify Drought Rate Structure or
Surcharge High Yes
3a Other Medium Yes
3b Implement or Modify Drought Rate Structure or
Surcharge High Yes
3c Implement or Modify Drought Rate Structure or
Surcharge High Yes
4 Implement or Modify Drought Rate Structure or
Surcharge High Yes
4 Landscape ‐ Other landscape restriction or prohibition Medium Yes 4a Implement or Modify Drought Rate Structure or
Surcharge High Yes
4b Implement or Modify Drought Rate Structure or
Surcharge High Yes
4c Implement or Modify Drought Rate Structure or
Surcharge High Yes
5 Implement or Modify Drought Rate Structure or
Surcharge High Yes
5a Implement or Modify Drought Rate Structure or
Surcharge High Yes
5b Implement or Modify Drought Rate Structure or
Surcharge High Yes
5c Implement or Modify Drought Rate Structure or
Surcharge High Yes
5 Implement or Modify Drought Rate Structure or
Surcharge High Yes
Submittal Table 8‐2: Demand Reduction Actions
NOTES:
Add additional rows as needed
Shortage Level
Supply Augmentation Methods and Other
Actions by Water Supplier
Drop down list
These are the only categories that will be accepted
by the WUEdata online submittal tool
How much is this going to reduce the
shortage gap? Include units used
(volume type or percentage)
Additional Explanation or Reference
(optional)
Submittal Table 8‐3: Supply Augmentation and Other Actions Add additional rows as needed
NOTES:
City Name 60 Day Notice
Notice of Public
Hearing
City of Beaumont Yes Yes
City of Canyon
Lake Yes Yes
City of Menifee Yes Yes
City of Moreno
Valley
Yes Yes
City of Murrieta Yes Yes
City of Riverside Yes Yes
City of Temecula Yes Yes
Pechanga Band of
Luiseño Indians Yes Yes
Soboba Band of
Luiseño Indians Yes Yes
County Name
Drop Down List
60 Day Notice Notice of Public
Hearing
Riverside County Yes Yes
NOTES:
Submittal Table 10‐1 Retail: Notification to Cities and Counties
Add additional rows as needed
Add additional rows as needed
City Name 60 Day Notice Notice of Public Hearing City of Perris Yes Yes
City of Hemet Yes Yes
City of San
Jacinto Yes Yes
County Name
Drop Down List
60 Day Notice Notice of Public Hearing
Riverside County Yes Yes
NOTES:
Submittal Table 10‐1 Wholesale: Notification to Cities and Counties (select one)
Supplier has notified more than 10 cities or counties in accordance with Water Code Sections 10621 (b) and 10642.
Completion of the table below is not required. Provide a separate list of the cities and counties that were notified.
Supplier has notified 10 or fewer cities or counties.
Complete the table below.
Provide the page or location of this list in the UWMP.
Add additional rows as needed
Add additional rows as needed
C
Appendix C: DWR
Standard SB X7-7 Tables
SB X7-7 Table 0: Units of Measure Used in 2020 UWMP*
(select one from the drop down list)
Acre Feet
*The unit of measure must be consistent throughout the UWMP, as reported in Submittal Table 2-3.
NOTES:
NOTES:
SB X7-7 Table 2: Method for 2020 Population Estimate
Method Used to Determine 2020 Population
(may check more than one)
1. Department of Finance (DOF) or
American Community Survey (ACS)
3. DWR Population Tool
4. Other
DWR recommends pre-review
2. Persons-per-Connection Method
2020 603,950
SB X7-7 Table 3: 2020 Service Area Population
2020 Compliance Year Population
NOTES:
Exported
Water *
Change in
Dist. System
Storage*
(+/-)
Indirect
Recycled
Water
This column will
remain blank
until SB X7-7
Table 4-B is
completed.
Water
Delivered for
Agricultural
Use*
Process Water
This column will
remain blank
until SB X7-7
Table 4-D is
completed.
84,672 - - - - - 84,672
NOTES:
SB X7-7 Table 4: 2020 Gross Water Use
2020 Volume
Into
Distribution
System
This column will
remain blank until
SB X7-7 Table 4-A
is completed.
2020 Gross Water
Use
2020 Deductions
* Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP, as reported in SB X7-7 Table 0 and Submittal Table 2-3.
Compliance
Year 2020
Volume Entering
Distribution System 1
Meter Error
Adjustment 2
Optional
(+/-)
Corrected Volume
Entering
Distribution System
44,726 - 44,726
Volume Entering
Distribution System 1
Meter Error
Adjustment 2
Optional
(+/-)
Corrected Volume
Entering
Distribution System
17,584 17,584
Volume Entering
Distribution System 1
Meter Error
Adjustment 2
Optional
(+/-)
Corrected Volume
Entering
Distribution System
2,625 2,625
A purchased or imported source
1 Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP, as reported in SB X7-7 Table 0 and Submittal Table 2-3.
2 Meter Error Adjustment -
See guidance in Methodology 1, Step 3 of Methodologies Document EMWD share of unused Soboba Settlement Water
This water source is (check one) :
1 Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP, as reported in SB X7-7 Table 0 and Submittal Table 2-3.
2 Meter Error Adjustment -
See guidance in Methodology 1, Step 3 of Methodologies Document NOTES:
Compliance Year
2020
Compliance Year
2020
SB X7-7 Table 4-A: 2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.
Name of Source Untreated water from Metropolitan
Name of Source
SB X7-7 Table 4-A: 2020 Volume Entering the Distribution System(s) Meter Error Adjustment
Complete one table for each source.
1 Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP, as reported in SB X7-7 Table 0 and Submittal Table 2-3.
2 Meter Error
Adjustment - See guidance in Methodology 1, Step 3 of Methodologies Document NOTES
This water source is (check one) :
The supplier's own water source
A purchased or imported source
Treated water from Metropolitan
Compliance Year
2020
This water source is (check one) :
The supplier's own water source
NOTES:
SB X7-7 Table 4-A: 2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.
The supplier's own water source
A purchased or imported source
Name of Source
Volume Entering
Distribution System 1
Meter Error
Adjustment 2
Optional
(+/-)
Corrected Volume
Entering
Distribution System
11,785 11,785
Volume Entering
Distribution System 1
Meter Error
Adjustment 2
Optional
(+/-)
Corrected Volume
Entering
Distribution System
7,310 7,310
Volume Entering
Distribution System 1
Meter Error
Adjustment 2
Optional
(+/-)
Corrected Volume
Entering
Distribution System
642 642
1 Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP, as reported in SB X7-7 Table 0 and Submittal Table 2-3.
2 Meter Error Adjustment -
See guidance in Methodology 1, Step 3 of Methodologies Document NOTES:
SB X7-7 Table 4-A: 2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.
SB X7-7 Table 4-A: 2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.
NOTES:
1 Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP, as reported in SB X7-7 Table 0 and Submittal Table 2-3.
2 Meter Error Adjustment -
See guidance in Methodology 1, Step 3 of Methodologies Document 1 Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP, as reported in SB X7-7 Table 0 and Submittal Table 2-3.
2 Meter Error Adjustment -
See guidance in Methodology 1, Step 3 of Methodologies Document Compliance Year
2020
Compliance Year
2020
Compliance Year
2020
Groundwater
This water source is (check one) :
The supplier's own water source
A purchased or imported source
This water source is (check one) :
The supplier's own water source
A purchased or imported source
Name of Source Agriculture
A purchased or imported source
NOTES:
SB X7-7 Table 4-A: 2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.
Name of Source
Name of Source Desalinated groundwater
This water source is (check one) :
The supplier's own water source
2020 Gross Water
Fm SB X7-7 Table 4
2020 Population Fm
SB X7-7 Table 3
2020 GPCD
603,950 84,672 125
SB X7-7 Table 5: 2020 Gallons Per Capita Per Day
(GPCD)
NOTES:
Extraordinary
Events1
Weather
Normalization1
Economic
Adjustment1
125 - - - 125 - 176 YES
NOTES:
1 All values are reported in GPCD
2 2020 Confirmed Target GPCD is taken from the Supplier's SB X7-7 Verification Form Table SB X7-7, 7-F.
SB X7-7 Table 9: 2020 Compliance
Optional Adjustments to 2020 GPCD
Did Supplier
Achieve
Targeted
Reduction for
2020?
Actual 2020
GPCD1
2020 Confirmed
Target GPCD 1, 2 TOTAL
Adjustments1
Adjusted 2020
GPCD 1
(Adjusted if
applicable)
Enter "0" if Adjustment Not Used
D
Appendix D: AWWA
Water Audits
Water Audit Report for:
Reporting Year:
All volumes to be entered as: ACRE-FEET PER YEAR
Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 39,038.703 acre-ft/yr 5 acre-ft/yr Water imported: 5 47,433.023 acre-ft/yr 2 acre-ft/yr
Water exported: 5 12,382.642 acre-ft/yr 3 acre-ft/yr
Enter negative % or value for under-registration
WATER SUPPLIED: 74,089.084 acre-ft/yr Enter positive % or value for over-registration .
AUTHORIZED CONSUMPTION
Billed metered: 8 65,197.120 acre-ft/yr
Billed unmetered: n/a 0.000 acre-ft/yr
Unbilled metered: n/a 0.000 acre-ft/yr Pcnt: Value:
Unbilled unmetered: 6 27.360 acre-ft/yr 1.25% acre-ft/yr AUTHORIZED CONSUMPTION: 65,224.480 acre-ft/yr
WATER LOSSES (Water Supplied - Authorized Consumption) 8,864.604 acre-ft/yr Apparent Losses Pcnt: Value:
Unauthorized consumption: 5 185.223 acre-ft/yr 0.25% acre-ft/yr Customer metering inaccuracies: 8 658.557 acre-ft/yr 1.00% acre-ft/yr Systematic data handling errors: 5 162.993 acre-ft/yr 0.25% acre-ft/yr Apparent Losses: 1,006.772 acre-ft/yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 7,857.832 acre-ft/yr WATER LOSSES: 8,864.604 acre-ft/yr
NON-REVENUE WATER
NON-REVENUE WATER: 8,891.964 acre-ft/yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 2,576.0 miles
Number of active AND inactive service connections: 8 154,989 Service connection density: 60 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 5 74.0 psi
COST DATA
Total annual cost of operating water system: 10 $111,535,107 $/Year Customer retail unit cost (applied to Apparent Losses): 4 $3.75 Variable production cost (applied to Real Losses): 4 $872.75 $/acre-ft WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Water imported
2: Volume from own sources
3: Customer retail unit cost (applied to Apparent Losses) Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
0.000
*** YOUR SCORE IS: 61 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? AWWA Free Water Audit Software:
Reporting Worksheet
27.360
2015-2016 7/2015 - 6/2016
Eastern Municipal Water District (3310009 SRO)
<----------- Enter grading in column 'E' and 'J' ----------> ?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades ?
?
?
?
?
?
(length of service line, beyond the property boundary,
that is the responsibility of the utility)
Use buttons to select percentage of water supplied
OR
value
Click here: ?
for help using option
buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 Water Audit Report for:
Reporting Year:
All volumes to be entered as: ACRE-FEET PER YEAR
Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 6 36,847.860 acre-ft/yr 3 acre-ft/yr Water imported: 6 54,030.710 acre-ft/yr 2 acre-ft/yr
Water exported: 6 14,032.420 acre-ft/yr 3 acre-ft/yr
Enter negative % or value for under-registration
WATER SUPPLIED: 76,846.150 acre-ft/yr Enter positive % or value for over-registration .
AUTHORIZED CONSUMPTION
Billed metered: 7 70,593.100 acre-ft/yr
Billed unmetered: n/a 0.000 acre-ft/yr
Unbilled metered: n/a 0.000 acre-ft/yr Pcnt: Value:
Unbilled unmetered: 5 32.040 acre-ft/yr 1.25% acre-ft/yr AUTHORIZED CONSUMPTION: 70,625.140 acre-ft/yr
WATER LOSSES (Water Supplied - Authorized Consumption) 6,221.010 acre-ft/yr Apparent Losses Pcnt: Value:
Unauthorized consumption: 5 192.115 acre-ft/yr 0.25% acre-ft/yr Customer metering inaccuracies: 7 354.739 acre-ft/yr 0.50% acre-ft/yr Systematic data handling errors: 5 176.483 acre-ft/yr 0.25% acre-ft/yr Apparent Losses: 723.337 acre-ft/yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 5,497.673 acre-ft/yr WATER LOSSES: 6,221.010 acre-ft/yr
NON-REVENUE WATER
NON-REVENUE WATER: 6,253.050 acre-ft/yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 2,576.0 miles
Number of active AND inactive service connections: 8 157,519 Service connection density: 61 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 4 74.0 psi
COST DATA
Total annual cost of operating water system: 10 $121,089,214 $/Year Customer retail unit cost (applied to Apparent Losses): 4 $3.71 Variable production cost (applied to Real Losses): 6 $885.55 $/acre-ft WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Water imported
2: Customer retail unit cost (applied to Apparent Losses) 3: Volume from own sources
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? AWWA Free Water Audit Software:
Reporting Worksheet
32.040
2017 7/2016 - 6/2017
Eastern Municipal Water District (3310009 SRO)
<----------- Enter grading in column 'E' and 'J' ----------> Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
0.000
*** YOUR SCORE IS: 63 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score ?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades ?
?
?
?
?
?
(length of service line, beyond the property boundary,
that is the responsibility of the utility)
Use buttons to select percentage of water supplied
OR
value
Click here: ?
for help using option
buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 Water Audit Report for:
Reporting Year:
All volumes to be entered as: ACRE-FEET PER YEAR
Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 7 34,988.040 acre-ft/yr 4 acre-ft/yr Water imported: 7 65,369.400 acre-ft/yr 4 -0.28% acre-ft/yr Water exported: 7 17,592.890 acre-ft/yr 3 -0.60% acre-ft/yr Enter negative % or value for under-registration
WATER SUPPLIED: 82,811.984 acre-ft/yr Enter positive % or value for over-registration .
AUTHORIZED CONSUMPTION
Billed metered: 7 78,470.600 acre-ft/yr
Billed unmetered: n/a 0.000 acre-ft/yr
Unbilled metered: n/a 0.000 acre-ft/yr Pcnt: Value:
Unbilled unmetered: 4 20.050 acre-ft/yr 1.25% acre-ft/yr AUTHORIZED CONSUMPTION: 78,490.650 acre-ft/yr
WATER LOSSES (Water Supplied - Authorized Consumption) 4,321.334 acre-ft/yr Apparent Losses Pcnt: Value:
Unauthorized consumption: 5 207.030 acre-ft/yr 0.25% acre-ft/yr Customer metering inaccuracies: 7 473.666 acre-ft/yr 0.60% acre-ft/yr Systematic data handling errors: 5 196.177 acre-ft/yr 0.25% acre-ft/yr Apparent Losses: 876.872 acre-ft/yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 3,444.462 acre-ft/yr WATER LOSSES: 4,321.334 acre-ft/yr
NON-REVENUE WATER
NON-REVENUE WATER: 4,341.384 acre-ft/yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 2,281.1 miles
Number of active AND inactive service connections: 8 160,017 Service connection density: 70 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 4 74.0 psi
COST DATA
Total annual cost of operating water system: 10 $129,977,810 $/Year Customer retail unit cost (applied to Apparent Losses): 5 $3.73 Variable production cost (applied to Real Losses): 6 $886.17 $/acre-ft WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Water imported
2: Customer retail unit cost (applied to Apparent Losses) 3: Billed metered
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? AWWA Free Water Audit Software:
Reporting Worksheet
20.050
2018 7/2017 - 6/2018
Eastern Municipal Water District (3310009 SRO)
<----------- Enter grading in column 'E' and 'J' ---------->
29.920
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
0.000
*** YOUR SCORE IS: 68 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score ?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades ?
?
?
?
?
?
(length of service line, beyond the property
boundary, that is the responsibility of the utility)
Use buttons to select percentage of water supplied
OR
value
Click here: ?
for help using option
buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 Water Audit Report for:
Reporting Year:
All volumes to be entered as: ACRE-FEET PER YEAR
Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 7 40,545.710 acre-ft/yr 5 acre-ft/yr Water imported: 7 53,578.970 acre-ft/yr 4 -0.18% acre-ft/yr Water exported: 7 18,362.290 acre-ft/yr 3 -1.20% acre-ft/yr Enter negative % or value for under-registration
WATER SUPPLIED: 75,659.982 acre-ft/yr Enter positive % or value for over-registration .
AUTHORIZED CONSUMPTION
Billed metered: 9 68,282.700 acre-ft/yr
Billed unmetered: n/a 0.000 acre-ft/yr
Unbilled metered: n/a 0.000 acre-ft/yr Pcnt: Value:
Unbilled unmetered: 4 17.740 acre-ft/yr 1.25% acre-ft/yr AUTHORIZED CONSUMPTION: 68,300.440 acre-ft/yr
WATER LOSSES (Water Supplied - Authorized Consumption) 7,359.542 acre-ft/yr Apparent Losses Pcnt: Value:
Unauthorized consumption: 5 189.150 acre-ft/yr 0.25% acre-ft/yr Customer metering inaccuracies: 7 829.345 acre-ft/yr 1.20% acre-ft/yr Systematic data handling errors: 5 170.707 acre-ft/yr 0.25% acre-ft/yr Apparent Losses: 1,189.201 acre-ft/yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 6,170.341 acre-ft/yr WATER LOSSES: 7,359.542 acre-ft/yr
NON-REVENUE WATER
NON-REVENUE WATER: 7,377.282 acre-ft/yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 2,314.0 miles
Number of active AND inactive service connections: 8 162,904 Service connection density: 70 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 4 76.0 psi
COST DATA
Total annual cost of operating water system: 10 $129,435,936 $/Year Customer retail unit cost (applied to Apparent Losses): 7 $4.21 Variable production cost (applied to Real Losses): 7 $841.65 $/acre-ft WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Water imported
2: Volume from own sources
3: Unauthorized consumption
Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? AWWA Free Water Audit Software:
Reporting Worksheet
17.740
2019 7/2018 - 6/2019
Eastern Municipal Water District (3310009 SRO)
*** YOUR SCORE IS: 73 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score -24.000
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
<----------- Enter grading in column 'E' and 'J' ----------> Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
17.740
?
?
?
?
?
? Click to access
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the ?
?
?
?
?
?
(length of service line, beyond the property boundary,
that is the responsibility of the utility)
Use buttons to select
percentage of water supplied
OR
value
Click here: ?
for help using option
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 Water Audit Report for:
Reporting Year:
All volumes to be entered as: ACRE-FEET PER YEAR
Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 7 36,583.280 acre-ft/yr 5 acre-ft/yr Water imported: 7 58,985.230 acre-ft/yr 4 -0.22% acre-ft/yr Water exported: 7 15,786.150 acre-ft/yr 3 -3.00% acre-ft/yr Enter negative % or value for under-registration
WATER SUPPLIED: 79,419.052 acre-ft/yr Enter positive % or value for over-registration .
AUTHORIZED CONSUMPTION
Billed metered: 9 74,299.500 acre-ft/yr
Billed unmetered: n/a 0.000 acre-ft/yr
Unbilled metered: n/a 0.000 acre-ft/yr Pcnt: Value:
Unbilled unmetered: 4 24.050 acre-ft/yr 1.25% acre-ft/yr AUTHORIZED CONSUMPTION: 74,323.550 acre-ft/yr
WATER LOSSES (Water Supplied - Authorized Consumption) 5,095.502 acre-ft/yr Apparent Losses Pcnt: Value:
Unauthorized consumption: 198.548 acre-ft/yr 0.25% acre-ft/yr Customer metering inaccuracies: 7 2,297.923 acre-ft/yr 3.00% acre-ft/yr Systematic data handling errors: 5 185.749 acre-ft/yr 0.25% acre-ft/yr Apparent Losses: 2,682.219 acre-ft/yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 2,413.283 acre-ft/yr WATER LOSSES: 5,095.502 acre-ft/yr
NON-REVENUE WATER
NON-REVENUE WATER: 5,119.552 acre-ft/yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 2,338.6 miles
Number of active AND inactive service connections: 8 165,627 Service connection density: 71 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 4 74.1 psi
COST DATA
Total annual cost of operating water system: 10 $140,926,497 $/Year Customer retail unit cost (applied to Apparent Losses): 7 $4.26 Variable production cost (applied to Real Losses): 7 $1,014.17 $/acre-ft WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Water imported
2: Volume from own sources
3: Unauthorized consumption
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
<----------- Enter grading in column 'E' and 'J' ----------> Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed *** YOUR SCORE IS: 73 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
5.130
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? AWWA Free Water Audit Software:
Reporting Worksheet
24.050
2020 7/2019 - 6/2020
Eastern Municipal Water District (3310009 SRO)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input ?
?
?
?
?
?
(length of service line, beyond the property boundary,
that is the responsibility of the utility)
Use buttons to select
percentage of water supplied
OR
value
Click here: ?
for help using option
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 E
Appendix E: West San
Jacinto Groundwater Basin
Management Plan
F
Appendix F: Hemet/San
Jacinto Groundwater
Management Area Water
Management Plan
Hemet/San Jacinto
Groundwater Management Area
Water Management Plan
Prepared for:
in coordination with:
Prepared by:
November 7, 2007
in association with Stetson Engineers and Geoscience
Water Resources & Information
Management Engineering, Inc.
1451 River Park Drive, Suite 142, Sacramento, CA 95815
Phone: 916-564-2236 Fax: 916-564-1639
E-mail: [email protected]
www.wrime.com
Water Resources & Information
Management Engineering, Inc.
Hemet/San Jacinto Groundwater Management Area
Water Management Plan
November 7, 2007
Prepared for:
Eastern Municipal Water District
Lake Hemet Municipal Water District
City of Hemet
City of San Jacinto
in coordination with
California Department of Water Resources
Prepared by:
Water Resources & Information Management Engineering, Inc. (WRIME)
1451 River Park Drive, Suite 142
Sacramento, CA 95815
in association with:
Stetson Engineers
Geoscience
Project Management Team
Behrooz Mortazavi, EMWD
Ali Taghavi, WRIME
Technical Team Legal Team
Jim Blanke, WRIME Art Littleworth, Best Best & Krieger
John Loncar, LHMWD Gerry Shoaf, Redwine & Sherrill
Steve Johnson, Stetson Engineers Eric Vale, Burke, Williams, Sorenson Dennis Williams, Geoscience Bob Hargreaves, Best Best & Krieger Facilitation
Dale Schafer, Center for Collaborative Policy
Department of Water Resources
Eric Hong, DWR
Maurice Hall, DWR
Hemet/San Jacinto Groundwater Management Area
Water Management Plan
(This Page Left Blank Intentionally)
Hemet/San Jacinto Groundwater Management Area
Water Management Plan
TABLE OF CONTENTS
TABLE OF CONTENTS............................................................................................................................i List of Figures.....................................................................................................................................vii List of Tables .......................................................................................................................................ix Selected Acronyms, Abbreviations, and Terminology .................................................................. x EXECUTIVE SUMMARY........................................................................................................................ 1 Background and Goals........................................................................................................................ 1 Groundwater as a Cornerstone for Water Management ............................................................... 2 Integration of Groundwater with Other Water Sources and Demand Management to Meet Future Water Needs .................................................................................................................. 2 Physical Solution is the Basis of Water Supply Project in the Management Area ..................... 4 A Firm Legal and Institutional Arrangement.................................................................................. 5 Implementation and Plan Evolution................................................................................................. 6 SECTION 1 INTRODUCTION.............................................................................................................. 9
1.1 Project Background ................................................................................................................ 9
1.2 Water Management Plan..................................................................................................... 11
1.3 Physical Solution .................................................................................................................. 11
1.4 Water Management Plan Goals.......................................................................................... 12 SECTION 2 MANAGEMENT PLAN FRAMEWORK..................................................................... 13
2.1 Management Area ................................................................................................................ 13
2.2 Management Plan Participants........................................................................................... 13
2.2.1 Public Agencies........................................................................................................ 13
2.2.2 Private Water Producers......................................................................................... 17
2.2.3 Role of State of California Department of Water Resources ............................. 19
2.2.4 Public Participation................................................................................................. 19
2.3 Previous Agreements and Institutional Bodies................................................................ 19
2.3.1 Fruitvale Judgment and Decree............................................................................. 19
2.3.2 Hemet/San Jacinto Groundwater Association ................................................... 20
2.4 Active Institutional Bodies .................................................................................................. 21
2.4.1 Hemet/San Jacinto Policy Committee.................................................................. 21 i Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Table of Contents
2.4.2 Hemet/San Jacinto Technical Committee............................................................ 21
2.4.3 Hemet/San Jacinto Consultant-Attorney-Managers Committee..................... 22
2.5 Related Groundwater Management Activities ................................................................ 22 SECTION 3 WATER MANAGEMENT PLAN ELEMENTS........................................................... 27
3.1 Management Plan Goals...................................................................................................... 27
3.1.1 Address Pumping Overdraft and Declining Groundwater Levels.................. 27
3.1.2 Provide for Soboba Prior and Paramount Water Rights.................................... 28
3.1.3 Ensure Reliable Water Supply............................................................................... 28
3.1.4 Provide for Planned Urban Growth ..................................................................... 28
3.1.5 Protect and Enhance Water Quality ..................................................................... 29
3.1.6 Develop Cost-Effective Water Supply.................................................................. 29
3.1.7 Provide Adequate Monitoring for Water Supply and Water Quality ............. 29
3.1.8 Supersede the Fruitvale Judgment and Decree................................................... 30
3.2 Water Management Plan Strategies................................................................................... 30
3.2.1 Reduce Public Agency Native Groundwater Production ................................. 30
3.2.2 Implement the San Jacinto River Recharge and Recovery Project ................... 31
3.2.3 Implement Groundwater Replenishment Program ........................................... 34
3.2.4 Expand the Use of Recycled Water....................................................................... 35
3.2.5 Provide for Reliable Water Supply to Meet the Future Demand ..................... 36
3.2.6 Implement Additional Water Conservation Measures...................................... 36
3.2.7 Implement and Expand Monitoring Program .................................................... 36 SECTION 4 STATE OF THE MANAGEMENT AREA ................................................................... 41
4.1 Geography and Climate ...................................................................................................... 41
4.1.1 Geography................................................................................................................ 41
4.1.2 Climate...................................................................................................................... 43
4.2 Surface Water Conditions ................................................................................................... 46
4.3 Geology.................................................................................................................................. 48
4.4 Delineation of Management Zones.................................................................................... 50
4.5 Soils......................................................................................................................................... 51
4.6 Groundwater Conditions .................................................................................................... 55
4.6.1 Artificial Recharge Operations .............................................................................. 55
4.6.2 Groundwater Levels and Flow.............................................................................. 56
4.6.3 Groundwater Budget.............................................................................................. 64
4.6.4 Land Subsidence...................................................................................................... 67 ii Hemet/San Jacinto Groundwater Management Area
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4.7 Land Use................................................................................................................................ 68
4.8 Current Water Supplies ....................................................................................................... 71
4.8.1 Groundwater............................................................................................................ 71
4.8.2 Imported Water ....................................................................................................... 80
4.8.3 Recycled Water........................................................................................................ 81
4.8.4 Surface Water........................................................................................................... 82
4.8.5 Purchases from EMWD .......................................................................................... 83
4.9 Estimates of Safe Yield and Overdraft .............................................................................. 83
4.9.1 Safe Yield .................................................................................................................. 83
4.9.2 Overdraft .................................................................................................................. 88
4.10 Water Quality Conditions ................................................................................................... 88 SECTION 5 PROJECTED WATER DEMANDS AND FUTURE PLAN PHASES ..................... 95
5.1 Projected Land Use Conditions .......................................................................................... 95
5.2 Projected Water Demands................................................................................................... 97
5.2.1 EMWD....................................................................................................................... 97
5.2.2 LHMWD ................................................................................................................... 98
5.2.3 City of Hemet Water Service Area........................................................................ 99
5.2.4 City of San Jacinto ................................................................................................... 99
5.2.5 Soboba Tribe........................................................................................................... 100
5.2.6 Private Water Producers....................................................................................... 101
5.2.7 Management Area................................................................................................. 101
5.3 Future Plan Phases ............................................................................................................. 102
5.3.1 San Jacinto River Integrated Recharge and Recovery Project, Phase II......... 102
5.3.2 Potential Conjunctive Use Projects ..................................................................... 104
5.3.3 Direct Recharge Projects....................................................................................... 105
5.3.4 In-Lieu Projects ...................................................................................................... 110 SECTION 6 GROUNDWATER RIGHTS ........................................................................................ 113
6.1 Public Agencies Base Production Rights......................................................................... 113
6.1.1 General.................................................................................................................... 113
6.1.2 EMWD Base Production Rights .......................................................................... 114
6.1.3 LHMWD Base Production Rights ....................................................................... 115
6.1.4 City of Hemet Base Production Rights............................................................... 115
6.1.5 City of San Jacinto Base Production Rights ....................................................... 115
6.2 Private Water Producer’s Production Rights ................................................................. 115 iii Hemet/San Jacinto Groundwater Management Area
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6.2.1 General.................................................................................................................... 115
6.2.2 Class A Production Rights ................................................................................... 116
6.2.3 Class B Production Rights .................................................................................... 116
6.3 Soboba Tribe Water Rights................................................................................................ 117 SECTION 7 SURFACE WATER RIGHTS........................................................................................ 119
7.1 LHMWD’s Diversion Rights............................................................................................. 119
7.1.1 Lake Hemet ............................................................................................................ 119
7.1.2 South Fork of the San Jacinto River .................................................................... 119
7.1.3 North Fork of the San Jacinto River.................................................................... 121
7.1.4 Strawberry Creek................................................................................................... 121
7.2 EMWD’s Diversion Rights ................................................................................................ 121 SECTION 8 SOBOBA TRIBE SETTLEMENT REQUIREMENTS .............................................. 123
8.1 Original Soboba Claim....................................................................................................... 123
8.1.1 Early Negotiations................................................................................................. 123
8.1.2 United States Settlement Proposal...................................................................... 123
8.1.3 Tribal Claim Against MWD................................................................................. 123
8.1.4 MWD’s Cross Complaint ..................................................................................... 123
8.1.5 Final Negotiations ................................................................................................. 124
8.1.6 Status of Congressional Approval ...................................................................... 124
8.2 Framework of the Settlement Agreement....................................................................... 124
8.3 Tribal Water Right.............................................................................................................. 124
8.4 Payments to the Tribe ........................................................................................................ 124
8.5 Funds Received by the Local Agencies ........................................................................... 124
8.6 Imported Water .................................................................................................................. 125
8.6.1 MWD Storage Right.............................................................................................. 125
8.6.2 Use of MWD Supply ............................................................................................. 125
8.7 Water Quality Requirements ............................................................................................ 125
8.8 Property Transactions........................................................................................................ 125
8.9 Approval of Water Management Plan ............................................................................ 125 SECTION 9 INSTITUTIONAL PLAN.............................................................................................. 127
9.1 Purpose ................................................................................................................................ 127
9.2 Watermaster........................................................................................................................ 127
9.2.1 Composition........................................................................................................... 127 iv Hemet/San Jacinto Groundwater Management Area
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9.2.2 Terms of Office....................................................................................................... 127
9.2.3 Removal and Replacement................................................................................... 127
9.2.4 Voting...................................................................................................................... 127
9.3 Rules and Regulations ....................................................................................................... 128
9.4 Meetings............................................................................................................................... 128
9.5 Watermaster Organization................................................................................................ 128
9.6 General Duties .................................................................................................................... 130
9.6.1 Policy....................................................................................................................... 130
9.6.2 Water Management Plan Implementation......................................................... 130
9.6.3 Technical Oversight .............................................................................................. 131
9.7 Watermaster Interaction with EMWD............................................................................. 132
9.7.1 Contract for Services ............................................................................................. 132
9.7.2 Financial Responsibilities ..................................................................................... 132 SECTION 10 FINANCIAL PLAN ...................................................................................................... 133
10.1 Annual Budget.................................................................................................................... 133
10.2 Ownership of Facilities ...................................................................................................... 133
10.2.1 Existing Facilities ................................................................................................... 133
10.2.2 Future Projects ....................................................................................................... 134
10.2.3 Use of Member Agency Assets............................................................................ 134
10.3 Assessments ........................................................................................................................ 134
10.3.1 Administrative Assessments ............................................................................... 134
10.3.2 Replenishment Assessments................................................................................ 135
10.3.3 Collections and Accounts..................................................................................... 135
10.4 Phase I Facilities Construction and Soboba Settlement Financing.............................. 136
10.4.1 EMWD Construction Cost.................................................................................... 136
10.4.2 Payments to Soboba Tribe.................................................................................... 136
10.4.3 EMWD Obligation................................................................................................. 137
10.4.4 Right to Transfer Entitlement to Use Facilities and/or Entitlement to Share in Rights to Water Not Used by Tribe .................................................................. 137
10.5 Future Capital Facilities..................................................................................................... 137 SECTION 11 IMPLEMENTATION PLAN ...................................................................................... 139
11.1 Organization........................................................................................................................ 139
11.2 Monitoring Program Implementation............................................................................. 141
11.3 Management Planning Tools ............................................................................................ 144 v Hemet/San Jacinto Groundwater Management Area
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vi Hemet/San Jacinto Groundwater Management Area
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11.4 Financial Administration................................................................................................... 145
11.5 Stipulated Judgment Administration .............................................................................. 146
11.6 Facilities and Projects......................................................................................................... 147
11.7 Special Projects and Studies.............................................................................................. 148
11.8 Conservation Programs ..................................................................................................... 148
11.9 Well Construction, Abandonment, and Destruction..................................................... 148
11.10 Public Participation........................................................................................................... 149
11.11 Groundwater Management Plan Components and Consistency with the California Water Code .................................................................................................................... 150
11.12 Schedule............................................................................................................................. 150 SECTION 12 REFERENCES................................................................................................................ 153 APPENDIX A. SETTLEMENT AGREEMENT
APPENDIX B. STIPULATED JUDGMENT
APPENDIX C. LIST OF GOVERNING BODIES
APPENDIX D. PRINCIPLES FOR WATER MANAGEMENT
APPENDIX E. LIST OF COMMITTEE ATTENDEES
APPENDIX F. HISTORICAL WATER SUPPLIES
APPENDIX G. EMWD LICENSE FOR SAN JACINTO RIVER DIVERSION APPENDIX H. MEMORANDA OF UNDERSTANDING
APPENDIX I. SB1938 GROUNDWATER MANAGEMENT PLAN COMPLIANCE
CHECKLIST
Table of Contents
LIST OF FIGURES
Figure ES.1 Hemet/San Jacinto Groundwater Management Area and Management Zones.. 1 Figure ES.2 Components of Management Area Water Supply..................................................... 3 Figure ES.3 Historical and Projected Water Demand .................................................................... 4 Figure ES.4 Plan Institutional Setup ................................................................................................. 6 Figure 1.1 Management Area and Management Zones............................................................... 10 Figure 2.1 Public Agencies and Soboba Reservation.................................................................... 14 Figure 3.1 Schematic of Integrated Recharge and Recovery Program - Phase I....................... 32 Figure 4.1 San Jacinto Watershed.................................................................................................... 42 Figure 4.2 Average Annual Precipitation in Watershed.............................................................. 44 Figure 4.3 Annual Precipitation and Cumulative Departure from Mean Precipitation.......... 45 Figure 4.4 Fault Locations ................................................................................................................ 49 Figure 4.5 Soil Series.......................................................................................................................... 53 Figure 4.6 Hydrologic Soils Groups................................................................................................ 54 Figure 4.7 Annual Imported Water Recharged............................................................................. 56 Figure 4.8 Early 20th Century Groundwater Flow Direction....................................................... 57 Figure 4.9 Current Groundwater Flow Direction ......................................................................... 58 Figure 4.10 Spring 2004 Groundwater Elevation.......................................................................... 60 Figure 4.11 Location of Representative Well Hydrographs ........................................................ 61 Figure 4.12 Groundwater Elevation, Canyon Management Zone, EMWD #6 Cienega.......... 62 Figure 4.13 Groundwater Elevation, Upper Pressure Management Zone, EMWD #9 Hewitt and Evans..................................................................................................................................... 63 Figure 4.14 Groundwater Elevation, Hemet North Management Zone, EMWD #21 Old Dairyland ..................................................................................................................................... 65 Figure 4.15 Groundwater Elevation, Hemet South Management Zone, EMWD #22 Sneed .. 66 Figure 4.16 1998 Land Use................................................................................................................ 69 Figure 4.17 Population Growth in Incorporated Hemet and San Jacinto.................................. 70 Figure 4.18 Components of Hemet/San Jacinto Groundwater Balance.................................... 72 Figure 4.19 Annual Management Area Water Supplies .............................................................. 73 Figure 4.20 EMWD Historical Annual Demand ........................................................................... 73 Figure 4.21 LHMWD Historical Annual Demand........................................................................ 74 Figure 4.22 City of Hemet Water Service Area Historical Annual Demand............................. 74 Figure 4.23 City of San Jacinto Water Service Area Historical Annual Demand ..................... 75 Figure 4.24 Private Water Producers Historical Annual Demand ............................................. 75 Figure 4.25 Soboba Historical Annual Demand............................................................................ 76 Figure 4.26a Annual Groundwater Production, by Management Zone.................................... 76 Figure 4.26b Annual Groundwater Production, by Entity.......................................................... 77 Figure 4.27 Average Annual Entity Groundwater Production, by Management Zone, 1984- 2004 ............................................................................................................................................... 77 vii Hemet/San Jacinto Groundwater Management Area
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Figure 4.28a EMWD 2004 Groundwater Production, Percentage by Supply Source .............. 78 Figure 4.28b LHMWD 2004 Groundwater Production, Percentage by Supply Source........... 78 Figure 4.28c City of Hemet Water Service Area 2004 Groundwater Production, Percentage by Supply Source ........................................................................................................................ 78 Figure 4.28d Soboba 2004 Groundwater Production, Percentage by Supply Source .............. 78 Figure 4.28e Private Water Producers 2004 Groundwater Production, Percentage by Supply Source.............................................................................................................................. 78 Figure 4.29a EMWD Historical Groundwater Production, Percentage by Supply Source..... 79 Figure 4.29b LHMWD Historical Groundwater Production, Percentage by Supply Source . 79 Figure 4.29c City of Hemet Water Service Area Historical Groundwater Production, Percentage by Supply Source .................................................................................................... 79 Figure 4.29d Soboba Historical Groundwater Production, Percentage by Supply Source..... 80 Figure 4.29e Private Water Producers Historical Groundwater Production, Percentage by Supply Source.............................................................................................................................. 80 Figure 4.30 Annual Imported Water Supply ................................................................................. 81 Figure 4.31 Annual Recycled Water Supply.................................................................................. 82 Figure 4.32 Annual Surface Water Supply..................................................................................... 82 Figure 4.33 Annual Sales by EMWD to Other Agencies within Management Area ............... 83 Figure 4.34 Safe Yield Estimates...................................................................................................... 87 Figure 4.35 Groundwater Production and Range of Safe Yield Estimates................................ 89 Figure 4.36 2004 Nitrate as N Concentrations in Groundwater (mg/L) ................................... 92 Figure 4.37 2004 TDS Concentrations in Groundwater (mg/L) ................................................. 93 Figure 5.1 Projected Ultimate Land Use......................................................................................... 96 Figure 5.2 EMWD Historical and Projected Demand .................................................................. 98 Figure 5.3 LHMWD Historical and Projected Demand............................................................... 98 Figure 5.4 City of Hemet Water Service Area Historical and Projected Demand.................... 99 Figure 5.5 City of San Jacinto Water Service Area Historical and Projected Demand .......... 100 Figure 5.6 Soboba Tribe Historical and Projected Demand....................................................... 100 Figure 5.7 Private Water Producers Historical and Projected Demand .................................. 101 Figure 5.8 Management Area Historical and Projected Demand............................................. 102 Figure 5.9 Schematic of Integrated Recharge and Recovery Program - Phase II ................... 103 Figure 5.10 Location of 9 Preferred Projects ................................................................................ 106 Figure 6.1 Average Annual Groundwater Production, 1995 - 1999 ......................................... 113 Figure 7.1 Location of Surface Water Diversions........................................................................ 120 Figure 11.1 Relationships between Entities ................................................................................. 140 Figure 11.2 Stream Gages and Groundwater Monitoring Sites ................................................ 143 viii Hemet/San Jacinto Groundwater Management Area
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LIST OF TABLES
Table ES.1 Public Agency Base Production Rights ......................................................................... 5 Table ES.2 Implementation Schedule ............................................................................................... 7 Table ES.3 Ongoing Schedule ............................................................................................................ 7 Table 4.1 USGS Surface Water Gaging Stations ............................................................................ 47 Table 4.2 Hydrologic Soils Groups ................................................................................................. 55 Table 4.3 Groundwater Budget for the Management Area ......................................................... 67 Table 4.4 Land Use Distribution Based on the 1998 Survey........................................................ 68 Table 4.5 Published Estimates of Safe Yield for the Management Area.................................... 85 Table 4.6 Historical (1954-1973), 1997 Current (1978-1997), and 2003 Current (1984-2003) Ambient Nitrate as N and TDS Concentrations (mg/L)....................................................... 90 Table 4.7 Change in Ambient Concentration (mg/L) of Nitrate as N and TDS, Between Historical (1954-1973) and 2003 Current (1984-2003) Time Periods .................................... 91 Table 5.1 Generalized Projected Acreage in the Management Area .......................................... 97 Table 5.2 Summary of Selected Conjunctive Use Site Conditions............................................ 107 Table 6.1 Base Production Rights .................................................................................................. 114 Table 11.1 Plan Implementation Schedule ................................................................................... 151 Table 11.2 Phase I Project Construction ....................................................................................... 152 ix Hemet/San Jacinto Groundwater Management Area
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SELECTED ACRONYMS, ABBREVIATIONS, AND TERMINOLOGY
Advisor independent engineering firm or a qualified individual AF acre-foot
AFY acre-feet per year
Agreement Settlement Agreement
Association Hemet/San Jacinto Groundwater Association
CAM Consultants-Attorneys-Managers
CEQA California Environmental Quality Act
cfs cubic feet per second
DWR California Department of Water Resources
EIR Environmental Impact Report
EMWD Eastern Municipal Water District
FMWC Fruitvale Mutual Water Company
GIS Geographic Information System
Hemet North Hemet North portion of the Lakeview/Hemet North IRRP Integrated Recharge and Recovery Program
JPA Joint Powers Authority
JUDGMENT Stipulated Judgment
Legal Counsel independent attorney or legal firm
LHMWD Lake Hemet Municipal Water District
Management Area Hemet/San Jacinto Groundwater Management Area MGD million gallons per day
MOU Memorandum of Understanding
MWD Metropolitan Water District of Southern California
PC Policy Committee
Plan Hemet/San Jacinto Water Management Plan
Plan Participants EMWD, LHMWD, Private Water Producers, and Cities of Hemet and San Jacinto (collectively)
Principles Principles for Water Management
Private Water Producers Property owners who are pumping groundwater pursuant to overlying water rights
Public Agencies EMWD, LHMWD, and Cities of Hemet and San Jacinto (collectively) RCFC&WCD Riverside County Flood Control and Water Conservation District RWQCB Santa Ana Regional Water Quality Control Board
RWRD Regional Water Resources Database
S.A.A. Settlement Agreement Approval
S.J.A. Stipulated Judgment Approval
Soboba Tribe Soboba Band of Luiseno Indians
TC Technical Committee
TDS Total Dissolved Solids
x Hemet/San Jacinto Groundwater Management Area
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TM Technical Memorandum
TMDL Total Maximum Daily Load
Upper Pressure San Jacinto - Upper Pressure Management Zone USGS United States Geological Survey
UWMP Urban Water Management Plan
Watermaster Watermaster Governing Board
WRIME Water Resources & Information Management Engineering, Inc. xi Hemet/San Jacinto Groundwater Management Area
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EXECUTIVE SUMMARY
BACKGROUND AND GOALS
The stakeholders in the Hemet/San Jacinto Groundwater Management Area (Figure ES.1) have developed the Hemet/San Jacinto Water Management Plan (Plan) to provide a foundation that guides and supports responsible water management into the future. The Participants in the Plan are Eastern Municipal Water District (EMWD), Lake Hemet Municipal Water District (LHMWD), Cities of Hemet and San Jacinto (Public Agencies), and Private Water Producers.
Figure ES.1 Hemet/San Jacinto Groundwater
Management Area and Management Zones
Private Water Producers are those property owners who are pumping groundwater pursuant to overlying water rights, typically for agricultural or domestic uses. Private Water Producers may elect two levels of participation in the Plan, with varying levels of benefits and responsibilities, or may elect not to participate. The details on this matter are described in Section 2 of the Plan document.
The Plan, adopted by the governing bodies of the Plan Participants, has eight primary goals:
Address pumping overdraft and declining groundwater levels, Provide for Soboba Tribe prior and paramount water rights, 1 Hemet/San Jacinto Groundwater Management Area
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Ensure reliable water supply,
Provide for planned urban growth,
Protect and enhance water quality,
Develop cost-effective water supply,
Provide adequate monitoring for water supply and water quality, and Supersede the Fruitvale judgment and agreement.
GROUNDWATER AS A CORNERSTONE FOR WATER MANAGEMENT
The goals of the Plan are interrelated and begin with maintaining groundwater as a highquality, low-cost, flexible source of water. Efforts are needed to make this happen, as historical groundwater pumping in excess of the Safe Yield of the groundwater basin has resulted in decreasing trends in water levels. In addition, historical land and water use practices for agricultural irrigation and dairy industry waste have raised the levels of nitrates and total dissolved solids in groundwater. Safe Yield, the long-term average quantity of water that can be pumped without causing undesirable results, has been estimated at 40,000 to 45,000 AFY, while average annual production exceeds this amount by approximately 10,000 to 15,000 AFY.
The 10,000 to 15,000 AFY difference between the long-term average annual groundwater production and Safe Yield is known as overdraft, which can be responsible for creating undesirable conditions in the basin, including degradation of groundwater quality. The Plan assumes a pragmatic and economic approach in setting the target to reduce overdraft, and assumes an overdraft of 10,000 AFY. This will allow the Plan Participants and the Watermaster to initiate and adopt plans and policies to eliminate overdraft with implementation of economically feasible and cost-effective projects. The Plan intends to stabilize or reverse the decreasing trend in water levels through reducing groundwater production to a level that brings the basin production within the Safe Yield of the Management Area. Higher water levels will increase water in storage, decrease energy costs for pumping, and inhibit the migration of poor quality groundwater from surrounding basins, helping to protect groundwater quality in the Management Area.
INTEGRATION OF GROUNDWATER WITH OTHER WATER SOURCES
AND DEMAND MANAGEMENT TO MEET FUTURE WATER NEEDS
The Plan Participants have several options available to increase water supply and reliability in the Management Area. Water used in the Management Area for agricultural and domestic use comes from groundwater, surface water, imports, and recycled water. As shown on Figure ES.2, most of this water has historically been from groundwater, based on 2004 data.
This allows significant opportunities for underutilized sources, particularly recycled water and 2 Hemet/San Jacinto Groundwater Management Area
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winter-time imported water, to replace or augment groundwater production. The regional cooperation developed over the years is also of importance as the supply mix varies between the different water users in the Management Area; by cooperating, the water users can fully utilize their available water resources.
81%
8%
9%
2% Groundwater
Surface Water
Imported Water
Recycled Water
Figure ES.2 Components of Management Area Water Supply
The high-quality groundwater basin also plays an important role in future water availability.
Historical declines in groundwater levels are a concern and a major impetus for the development of this Plan. However, even the dewatered portion of the groundwater basin is a significant asset and allows for the full utilization of the available water supplies mentioned above. The new water supplies can be introduced into the system filling the empty portions of the groundwater basin by either substitution for pumping groundwater (in-lieu recharge) or by placing the water in the groundwater system through seepage from specially designed ponds or through injection from wells (direct recharge). Both these methods benefit the Management Area groundwater basin, which is composed of materials that can store large quantities of water and holds high quality groundwater that can be pumped for usage at a later time. A complex system of faults and other geologic features separate the groundwater system into four Management Zones (see Figure ES.1), which require some degree of individual attention in planning and designing recharge and extraction projects, based on each Management Zone’s unique attributes.
The numerous water supply opportunities along with water conservation by both the Public Agencies and Private Water Producers will be utilized to meet the current and future water needs of the Management Area. Based on the latest data and information on land and water practices, general plans, urban water management plans, and other specific plans, water demand in the Management Area is projected to increase over the course of next 15-20 years (Figure ES.3). Based on these projections, there will also be a shift from agricultural water use 3 Hemet/San Jacinto Groundwater Management Area
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to urban water use, resulting in more stringent water quality requirements to meet drinking water standards.
0 10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure ES.3 Historical and Projected Water Demand
PHYSICAL SOLUTION IS THE BASIS OF WATER SUPPLY PROJECT IN
THE MANAGEMENT AREA
As described in the Stipulated Judgment, the Physical Solution is the court decreed method of managing the water supply in the Management Area to maximize the reasonable and beneficial use of the waters, eliminate overdraft, protect the prior rights of the Soboba Tribe, and provide for the substantial enjoyment of all water rights by recognizing their priorities. The Physical Solution consists of numerous water supply and conjunctive use projects, including direct and in-lieu recharge, increased use of recycled water, increased conservation, and improved monitoring. The core project in the Physical Solution is the Hemet/San Jacinto Integrated Recharge and Recovery Program (IRRP). Phase I of the IRRP has been designed, funded, the necessary environmental permits have been acquired, and construction is currently underway.
Phase II is in planning stages. The IRRP is a regional recharge and recovery program to meet the following goals:
Satisfy Prior and Paramount Soboba Tribe water rights; Offset the estimated 10,000 AFY overdraft in the Management Area; and Provide an additional 15,000 AFY to help meet the projected demand increases. 4 Hemet/San Jacinto Groundwater Management Area
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In addition to IRRP, the Plan identifies other projects that can potentially meet the above goals.
These include direct recharge, in-lieu recharge, and recycled water projects.
A FIRM LEGAL AND INSTITUTIONAL ARRANGEMENT
Development of a comprehensive system of water management begins with the legal and institutional framework. To meet the goal of reducing groundwater production to eliminate overdraft, the Public Agencies agreed upon some basic principles as a basis for allocating Base Production rights. Base Production rights establish the initial amount that each Public Agency would be able to pump without the need to replenish the basin. The Base Production rights are calculated on the basis of actual production by Public Agencies during 1995-99 calendar years, and adjusted for specific historical operational activities, such as:
Recharge Activities;
MWD San Jacinto Tunnel Seepage;
Fruitvale Entitlement Water Sold by EMWD to LHMWD, Hemet, and San Jacinto;
Stream Diversions;
Conveyance Water Deliveries; and
Other Considerations.
The Public Agencies have, therefore, agreed to the following Base Production Rights:
Table ES.1 Public Agency Base Production Rights
Public Agency Base Production Rights
(AFY)
Base Production Rights
(Percent)
EMWD 10,869 33.7
LHMWD 11,063 34.2
City of Hemet 6,320 19.6
City of San Jacinto 4,031 12.5
Total 32,283 100
Surface water rights are not impacted and/or changed by the Plan or any other recent agreements. LHMWD diverts water from the San Jacinto River and its tributaries through its pre-1914 water rights to meet their irrigation and municipal water demands, and EMWD has a license to divert water from the San Jacinto River for recharge purposes.
Soboba Tribal water rights are recognized throughout the Plan, and details of the monetary, water quantity, water quality, and property requirements to meet the obligations set forth in the settlement agreement with the Soboba Tribe are discussed in Section 8 of the Plan.
The Institutional Plan, discussed in Section 9 of the document, assigns the administration, 5 Hemet/San Jacinto Groundwater Management Area
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implementation, and monitoring of the Plan to a Watermaster. The Watermaster will consist of one elected official representing each of the Public Agencies and one representative selected by the participating Private Water Producers. The Watermaster will utilize the counsel of legal advisor, as well as provide technical oversight through an Advisor and Technical Advisory Committee. The Watermaster will utilize services of EMWD for recharge operations and administration and monitoring of the projects and the Plan. The relationships and basic responsibilities of these entities are summarized in Figure ES.4. The Watermaster will also review, approve, and adopt the annual budget, which will be funded by administrative assessments and replenishment assessments. The details of Watermaster administration are discussed in Section 9 of the Plan document.
EMWD
TECHNICAL
ADVISORY
COMMITEE
ADVISOR
WATERMASTER BOARD LEGAL
COUNSEL
Management
Evaluation
Recmmendations
Purchase water from MWD
Deliver water to recharge basins
Operation and maintain facilities and systems
Other activities related to physical operations
Data / sample collection
Lab analysis and data compilation
Meter reading / billing / collection / accounting
RECHARGE OPERATIONS ADMINISTRATION AND MONITORING
Figure ES.4 Plan Institutional Setup
IMPLEMENTATION AND PLAN EVOLUTION
The implementation of the Plan, along with any additions or modifications as may become appropriate, and all financial matters relating to Plan activities are the responsibility of the Watermaster. The implementation process can be divided into two processes: implementation and ongoing activities. The schedules for these processes are shown in Table ES.2 and Table ES.3.
6 Hemet/San Jacinto Groundwater Management Area
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Table ES.2 Implementation Schedule
Months after
Approval of
Stipulated
Judgment
Implementation Item
Month 1 Determine the method of selection for the Private Pumper representative.
Month 2 Select Public Agency and Private Pumper representatives.
Month 3 Hold first meeting of the Watermaster.
Contract with EMWD for Watermaster services.
Month 4 none
Month 5 none
Month 6
Retain legal council and advisor.
Prepare and adopt Rules and Regulations for its own operation as well as for the operation of the Water Management Plan and Judgment.
Review and reissue agreements and MOUs, as needed.
Upon Settlement
Agreement
Implementation
Recognize Tribal water rights.
Table ES.3 Ongoing Schedule
Timing Frequency Activity Responsibility
January 1 Annual Propose Monitoring Program. EMWD
End of January Annual Review Monitoring Program. Advisor End of February Annual Approve budget for Monitoring Program. Watermaster 1st Quarter Annual Advance payment of Administrative
Assessments. Public Agencies
1st Quarter Annual Payment of Replenishment Assessments. Public Agencies Four months
after completion
of calendar year
monitoring
Annual Submit Annual Hemet/San Jacinto
Water Management Area Report. EMWD
As needed As needed Revise safe yield. Advisor
TBD Annual Prepare, File, and Distribute Watermaster
Annual Report. Watermaster
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SECTION 1 INTRODUCTION
1.1 PROJECT BACKGROUND
The stakeholders in the Hemet/San Jacinto Groundwater Management Area (Figure 1.1) (Management Area) have developed the Hemet/San Jacinto Water Management Plan (Plan) to provide a foundation that guides and supports responsible water management in the future.
The local stakeholders involved in the Plan include Eastern Municipal Water District (EMWD), Lake Hemet Municipal Water District (LHMWD), Cities of Hemet and San Jacinto, and Private Water Producers, collectively referred to as “Plan Participants”. EMWD, LHMWD, and the Cities of Hemet and San Jacinto are collectively referred to as “Public Agencies”.
A Policy Committee (PC) of the Plan Participants developed and adopted the Principles for Water Management (Principles), which guide the management, development, and governance of local water supplies. The adopted Principles, along with a variety of technical analyses, guided development of the Plan. The PC established the Principles based on the historical data on the operation of the groundwater basin; historical and projected water demands; and existing and potential future facilities. The California Department of Water Resources (DWR) provided financial, facilitation, and technical support to the PC.
A Technical Committee (TC) supported the PC and served as the investigative and review body to ensure that proper technical analyses were conducted to provide a defensible technical foundation for the Plan. The TC provided technical input to support decisions by the Public Agencies, Private Water Producers, and other stakeholders. DWR also provided financial and technical support to the TC.
A Consultants-Attorneys-Managers (CAM) committee served as an interim body to develop and review technical, legal, institutional, and financial documents, plans, and standards. The CAM committee discussed the technical/policy/legal issues in anticipation of evolving documents and recommendations for action by the policy makers for the PC.
EMWD and LHMWD have also worked with the Soboba Band of Luiseño Indians (Soboba Tribe) and the Federal Government to develop a Settlement Agreement (Agreement) (Appendix A) that would resolve past issues with respect to Tribal water rights and the water management practices in the basin. The Agreement will be supported by two stipulated 9 Hemet/San Jacinto Groundwater Management Area
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!
!
San Jacinto River
Diamond Valley Lake
Lake Skinner
Hemet South
Hemet North
Portion of
Lakeview-Hemet North
San Jacinto
Upper Pressure
Canyon
Hemet
San Jacinto
·|}þ79
·243 |}þ
·|}þ74
·|}þ79
Legend
Management Area
Management Zones*
Hemet North
Hemet South
Canyon
San Jacinto Upper Pressure
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
October 2007
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judgments1 that will provide the legal and technical basis for future water supplies for the Soboba Tribe.
1.2 WATER MANAGEMENT PLAN
The Plan, adopted by the governing bodies of the Plan Participants, will provide a roadmap for implementation of the Physical Solution, ensure adequate and reliable sources of future water supply for the Management Area, and meet the Prior and Paramount Soboba Tribe water rights requirements. The Plan may be modified and updated in the future based on, among other things, the availability of new data, updated technical analysis, and changes in the institutional/financial structure of the stakeholders.
1.3 PHYSICAL SOLUTION
As described in the Stipulated Judgment (Appendix B), the Physical Solution is the court decreed method of managing the water supply in the Management Area to maximize the reasonable and beneficial use of the waters, eliminate overdraft, protect the prior rights of the Soboba Tribe, and provide for the substantial enjoyment of all water rights by recognizing their priorities. Therefore, the Physical Solution is a group of water supply and conjunctive use projects that would serve this purpose.
The project that is considered to be the core of the Physical Solution is Phase I of the Hemet/San Jacinto Integrated Recharge and Recovery Program (IRRP). Phase I of the IRRP has been designed, funded, and the necessary environmental permits are being acquired. Phase II is in planning stages. The complete project is designed to recharge (replenish) imported water and extract groundwater at a capacity such that the following goals are met:
1. Satisfy Prior and Paramount Soboba Tribe water rights;
2. Offset the estimated 10,000 acre-feet per year (AFY) overdraft in the Management Area; and
3. Provide an additional 15,000 AFY to help meet the projected demand increases.
Major elements of Phase I of the Project are:
Modifications to Pump Stations (Warren and Commonwealth); Construction of Pipelines;
1 These judgments are in the case of Soboba Tribe v. Metropolitan Water District, et. al.; U.S. District Court in Los Angeles, Case No. 00-04208 GAF, and in a Riverside County Superior Court action, yet to be filed.
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Design and Construction of Recharge Basins;
Drilling Three Extraction Wells;
Installation of Pumps and Chlorination Equipment for Three Extraction Wells; and
Design and Drilling of Three Monitoring Wells.
Additional details on Phase I of the IRRP are presented in Section 3.2.2 of this Plan, and details on Phase II are presented in Section 5.3.1.
In addition to the San Jacinto River Integrated Recharge and Recovery Project, there are other projects that the TC has identified as potential projects to be further considered in the future as part of the Physical Solution for the Management Area. These include direct recharge and in-lieu recharge projects and are described in Section 5.3 of this Plan.
1.4 WATER MANAGEMENT PLAN GOALS
The Principles include eight primary goals for the management of water resources in the Management Area. These are:
Address pumping overdraft and declining groundwater levels, Provide for Soboba Tribe prior and paramount water rights, Ensure reliable water supply,
Provide for planned urban growth,
Protect and enhance water quality,
Develop cost-effective water supply,
Provide adequate monitoring for water supply and water quality, and Supersede the Fruitvale judgment and agreement.
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SECTION 2 MANAGEMENT PLAN FRAMEWORK
This section briefly describes the geographic boundaries of the four divisions, or Management Zones, that make up the Management Area and provides a brief history and background on each of the primary stakeholder organizations. Past agreements and related activities leading to the Plan are discussed below, including the role of the state and public participation.
2.1 MANAGEMENT AREA
The Management Area is divided into four Management Zones: The Canyon, San Jacinto Upper Pressure (Upper Pressure), Hemet South, and the Hemet North portion of the Lakeview/Hemet North (Hemet North). The locations of the Management Zones are shown in Figure 1.1. The delineation of the Management Zones is based on the recent update by the Santa Ana Regional Water Quality Control Board (RWQCB) in the Water Quality Control Plan - Santa Ana River Basin (RWQCB, as amended 2004). The RWQCB defined these boundaries on the basis of hydrogeologic conditions to support implementation of specific water quality criteria.
Additional descriptions of the basin hydrogeology are provided in Section 4.
2.2 MANAGEMENT PLAN PARTICIPANTS
A map of the service areas of the Public Agencies near the Management Area and the Soboba Reservation is provided in Figure 2.1. The Plan Participants are briefly described below.
2.2.1 PUBLIC AGENCIES
EMWD, LHMWD, the City of Hemet, and the City of San Jacinto provide water service in various areas of the Canyon, Upper Pressure, Hemet South, and Hemet North Management Zones. A list of governing bodies is provided in Appendix C. Additionally, there are a number of Private Water Producers extracting groundwater for agricultural and domestic use.
2.2.1.1 Eastern Municipal Water District (EMWD)
Since its formation in 1950, EMWD has matured from a small agency primarily serving agriculture to one whose major demands come from domestic customers. In 1951, EMWD annexed to the Metropolitan Water District of Southern California (MWD). With the purchase of the Fruitvale Mutual Water Company (FMWC) in 1971, EMWD acquired all of Fruitvale’s 13 Hemet/San Jacinto Groundwater Management Area
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assets including appropriative, prescriptive, and riparian water rights; water system, wells, well sites, pumps, and storage; real property, easements, rights, and interests; and franchises, permits, and licenses. Over time, the agency has continued to grow. Today, in addition to providing retail service, EMWD provides wholesale water to the seven local water agencies within its service area, including the three remaining Public Agencies in the Management Area.
As of 2005, EMWD serves approximately 113,000 retail connections, including approximately 200 agricultural connections, in a service area with an estimated population of 567,000 within the 555-square-miles, including many areas outside the Management Area. The population within EMWD’s boundaries is expected to grow to 830,000 by 2025 (EMWD, 2005a), not including the population of the Rancho California Water District.
In addition to wholesale and retail potable water supply, EMWD’s services include wastewater collection and treatment as well as water recycling. The San Jacinto Valley Regional Water Reclamation Facility is an 11 million gallons per day (MGD) plant that provides most of the treatment and water recycling capability for the Management Area.
The five-member Board of Directors comprise the governing body of EMWD and are responsible for setting the policies guiding the operations of the District. Board members are elected to four-year terms by the registered voters from five geographic divisions, which are apportioned on the basis of population distribution. Terms of service are staggered to ensure continuity; public elections are held in at least two divisions every two years. Directors must reside within the division from which they are elected.
The 2004 water use in the portion of the EMWD service area within the Management Area was 13,900 AFY, and it is projected to increase to 21,000 AFY by the year 2020 (EMWD, 2005b).
2.2.1.2 Lake Hemet Municipal Water District (LHMWD)
LHMWD was created in its present form in 1955, but its origins date back to the late 1880s. The service area covers 16,500 acres in the Hemet/San Jacinto Valley area with an additional 2,200 acres in Garner Valley. LHMWD provides water to residential and agricultural customers in its service area. All wastewater collection and treatment within the LHMWD area is performed by EMWD.
LHMWD operates the Hemet Dam and reservoir. The dam, an engineering marvel at the time of its construction in 1895, is a gravity-type, granite dam. LHMWD historically treated a portion of this surface water for domestic use, however since 1998 the surface water treatment plant has been offline and all surface water usage has been for untreated agricultural uses. 15 Hemet/San Jacinto Groundwater Management Area
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LHMWD usually maintains approximately 11.7 million gallons in storage in the Hemet/San Jacinto Valley.
LHMWD customers are represented by a publicly elected board of five directors from five divisions, representing approximately 13,700 domestic and 52 agricultural connections within a 21-square mile service area with a 2005 population of approximately 39,100. The population within the LHMWD service area is expected to grow to approximately 49,500 by 2025 (LHMWD, 2005).
The 2004 water use within the LHMWD service area was estimated to be 16,900 AFY. Due to the expected benefits of more robust conservation efforts, demand is projected to remain fairly constant over the next several years despite an increasing number of service connections.
Demand in 2020 is expected to be 16,300 AFY before increasing above the 2004 demand level in years thereafter (LHMWD, 2005).
2.2.1.3 The City of Hemet
The development of Hemet began in 1887 with the formation of the Lake Hemet Water Company and the Hemet Land Company by W. F. Whittier and E. L. Mayberry. The completion of the Hemet Dam in 1895, the formation of Lake Hemet behind the dam, and a water distribution system to and through the valley made future development of the Hemet area possible.
As of 2005, the city had a population of 78,600 with an area of approximately 26 square miles.
City of Hemet anticipates a population growth to 154,000 by 2025 (Hemet, 2006).
The City of Hemet was incorporated on January 20, 1910 with a population of 992. The city government is a Council/Manager form of government with seven elected positions, which includes five Council Members, one City Treasurer, and one City Clerk. The Mayor is elected by the Council Members and serves a one-year term. All Council Members serve a four-year term.
The City of Hemet Water Department treats and distributes water to 9,500 connections, covering 5 square miles of the city area. The 2005 population of the Water Department’s service area is 20,200 and is projected to grow to 22,300 by 2025. EMWD and LHMWD serve the remaining 21 square miles of the city, with 7,830 and 3,025 connections, respectively. All wastewater collection and treatment within the City of Hemet area is performed by EMWD.
The 2004 water use within the City of Hemet Water service area was estimated to be 6,000 AFY, and is projected to increase to 6,700 AFY by year 2020 (Hemet, 2006). 16 Hemet/San Jacinto Groundwater Management Area
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2.2.1.4 The City of San Jacinto
Incorporated in 1888, San Jacinto is one of the oldest communities in Riverside County. The city has a Council/Manager form of government with a five member Council that includes a Mayor and Vice Mayor. The City of San Jacinto Water/Wastewater Divisions are responsible for the health and safety of the community through the delivery of the potable water supply and the collection of wastewater. The city wastewater collection system is maintained by this Division while wastewater treatment service is provided by EMWD.
The 2005 population of the city was 34,100; it is anticipated the population of the city will grow to 63,600 by 2025 (San Jacinto, 2005). The City of San Jacinto Water Department serves the central portion of the city with approximately 3,700 residential and commercial service connections. The 2005 population of the Water Department’s service area is 13,200 and is projected to grow to 24,000 by 2025. The remaining portions of the city are served by EMWD and LHMWD, which have 4,636 and 475 service connections within the city boundaries, respectively.
The 2004 water use within the City of San Jacinto water service area was estimated to be 3,100 AFY, and is projected to increase to 5,100 AFY by year 2020 (San Jacinto, 2005).
2.2.2 PRIVATE WATER PRODUCERS
Private Water Producers are those property owners who are pumping groundwater pursuant to overlying water rights, typically for agricultural or domestic uses. Historically there was no comprehensive metering program in-place to monitor groundwater production and/or water use by the Private Water Producers. EMWD collected groundwater data through an informal, voluntary monitoring program. In 2004 the Hemet/San Jacinto Groundwater Monitoring Program was initiated by the Public Agencies and the DWR to collect, analyze, and compile groundwater-related data (EMWD, 2005).
It is estimated, on the basis of limited data and land use analysis, that the 2004 water use by Private Water Producers was about 22,200 AFY. This annual level of water use is unusually low, compared to a long-term average of 31,000 for 1984-2004 (WRIME, 2003a). Water use is expected to drop to approximately 16,000 AFY by 2020.
The Public Agencies recognize the overlying water rights of Private Water Producers, and the Principles provide several options for voluntary participation in the Plan by the Private Producers. For more details, please see the Principles provided in Appendix D. 17 Hemet/San Jacinto Groundwater Management Area
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There are two classes of participants, Class A and Class B; both agree to have their wells metered and to have those meters read by EMWD personnel at no cost to the participants. The two types of participants are further explained below.
2.2.2.1 Class A Participants
A Private Water Producer can sign an agreement acknowledging the existence of the Plan, while not being required to participate in Plan implementation. Class A participants are allowed to vote for and/or serve as the Private Water Producer representative on the Watermaster board. The Class A participants may continue to pump from their property without assessments by the Watermaster, so long as the water is put to a reasonable and beneficial use as authorized by California law.
The Class A participants have the right to convert to Class B during a grace period that ends 3 years after the entry of the Stipulated Judgment, and upon payment of the total assessments without interest, as if they were Class B participants to begin with.
2.2.2.2 Class B Participants
A Private Water Producer can become a Class B participant by electing to limit annual pumping to their estimated average annual production during the 1995 – 1999 calendar years and by agreeing to pay replenishment assessments on amounts in excess of that average annual production.
Like Class A Participants, Class B Participants can vote for and/or serve as the Private Water Producer’s representative on the Plan’s governing board. Additional benefits are given to Class B Participants as well. Under certain conditions, the Class B Participant can convey their Adjusted Production Right to the Plan or to a Public Agency. Also, upon conversion from agricultural to urban uses, Class B Participants would receive credits from the Public Agency toward the satisfaction of any requirements then in effect for water supplies and toward any fees associated with water supply that the Public Agency may then have in effect. For more information on production rights, please see Section 6.
2.2.2.3 Non-Participants
A Private Water Producer can elect not to participate in the Plan and not to formally acknowledge its existence. These non-participants will continue to exercise their water rights unaffected by the Plan.
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2.2.3 ROLE OF STATE OF CALIFORNIA DEPARTMENT OF WATER RESOURCES In June 2001, the DWR executed a Memorandum of Understanding (MOU) with EMWD, LHMWD, and the Cities of Hemet and San Jacinto. Initially, DWR worked to bring the group together to establish a mutual understanding of the issues in the Management Area. The goals of the group were determined and included the following: (i) finalizing an approach to groundwater management; (ii) settling on a mechanism to involve the Plan Participants in the water rights claim by the Soboba Tribe; (iii) agreeing on the basic components of a regional conjunctive use program; and (iv) establishing the necessary institutional structures. Major involvement of the DWR to-date include providing technical support to the TC and PC on resolving various technical and data analysis issues, providing facilitation and mediation support to the PC and the CAM committee, providing financial support on a number of studies and projects, including the Plan document.
2.2.4 PUBLIC PARTICIPATION
There have been numerous opportunities for public input into the development of the Plan.
Meetings were held for the public at the beginning of the Plan process to provide information and gather input. While the Plan was being developed, more opportunities were provided for public input, including TC and PC meetings and meetings with the Private Water Producers, all of which were open to the public. The public was also given the opportunity to review the draft of the Plan and submit comments.
2.3 PREVIOUS AGREEMENTS AND INSTITUTIONAL BODIES
During the course of history of water supply in the Management Area, there have been other agreements and institutional bodies that have been formed and operated to facilitate the management of water supplies. Following is a brief description of these agreements and institutional bodies, which are no longer active or are superseded by this Plan.
2.3.1 FRUITVALE JUDGMENT AND DECREE
The Fruitvale Judgment and Decree (The City of San Jacinto, et al., v. Fruitvale Mutual Water Company, et al., No. 51546, Riverside County) was entered into Book 72, Page 164 of Judgments, Riverside County, on June 4, 1954. Under the Judgment and Decree, FMWC could extract groundwater from an area which largely corresponds to the Canyon Management Zone without any restrictions as long as a specified criteria regarding static depth to groundwater and production limits were met. After purchase of FMWC, EMWD was subject to the 19 Hemet/San Jacinto Groundwater Management Area
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provisions of the Judgment and Decree. The Water Management Plan and related Stipulated Judgment will subsume and supersede the 1954 Fruitvale Judgment and Decree, along with any other agreements between EMWD and other agencies related to the FMWC acquisition, provided that none of the service area agreements included in the Fruitvale documents or those related to mutual aid or system interties are affect by this Plan or the Stipulated Judgment.
In 1971, EMWD purchased all of FMWC’s assets and water rights, and FMWC was dissolved.
EMWD also agreed to continue to provide to the Cities of Hemet and San Jacinto and LHMWD the amounts of water which they had been entitled to receive as shareholders in FMWC. These deliveries were known as “entitlement water” and the water was provided at a fixed rate, subject to annual adjustments. The amounts of water to be provided were:
City of Hemet: 6.39% of the greater of FMWC pumping or 9,000 AFY; City of San Jacinto: 0.38% of FMWC pumping; and
LHMWD: 3.74% of FMWC pumping.
The reporting by EMWD since the purchase of FMWC shows that an average of approximately 10,000 AFY was pumped from FMWC wells. Of this total, an average of 61% was from Upper Pressure, 33% was from Canyon, and 6% AFY was from Hemet South.
2.3.2 HEMET/SAN JACINTO GROUNDWATER ASSOCIATION
The Hemet/San Jacinto Groundwater Association (Association) was formed in 1991 to provide an over-arching organization to proactively address groundwater issues in the Management Area. The Association Board of Directors included representatives from the Private Water Producers, EMWD, LHMWD, and the Cities of Hemet and San Jacinto.
The Mission Statement and Articles of Association were approved on September 9, 1991. The Mission Statement read: The Hemet/San Jacinto Groundwater Association serves as the regional groundwater management entity for portions of the San Jacinto Valley groundwater basins. The Mission of the Association is to maintain a secure reliable and reasonably priced supply of high quality water for groundwater producers in the basin. The Association will implement its Mission by developing and applying sound groundwater basin management concepts.
With regard to the area covered by the Association, the Articles of Association state: The portions of the San Jacinto Valley Groundwater Basins shall include the Canyon area, the Intake area, and the upper pressure area, of the San Jacinto Hydrologic Subarea; the Hemet Hydrologic Subarea; and a portion of the Winchester Hydrologic Subarea. Such also being that portion of the San Jacinto Valley southeasterly of Bridge Street and northeast of one-quarter mile west of California Avenue in the area of Simpson Road, together with tributary basins, streams, and watersheds. 20 Hemet/San Jacinto Groundwater Management Area
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In May 1994, following receipt of the Soboba Band of Mission Indians water rights settlement claim, requests were submitted to the U.S. Department of the Interior by EMWD, the Association, and the Soboba Tribe, to appoint an Indian Water Rights Settlement team to participate in settlement negotiations. The activities of the Association stopped when the current negotiations took precedence.
2.4 ACTIVE INSTITUTIONAL BODIES
As part of the on-going activities leading to the development and adoption of the Principles, the Stipulated Judgment, and agreement with the Soboba Tribe, the following institutional bodies are formed:
Hemet/San Jacinto Policy Committee (PC),
Hemet/San Jacinto Technical Committee (TC), and
Hemet/San Jacinto Consultant-Attorney-Managers Committee (CAM).
Following is a brief description of each body, their role, and participants.
2.4.1 HEMET/SAN JACINTO POLICY COMMITTEE
The PC is comprised of elected officials representing EMWD, LHMWD, the Cities of Hemet and San Jacinto, and representatives of the Private Water Producers. Each entity, including the Private Water Producers, has three representatives on this committee. In the case of the Public Agencies, the PC representatives are two members of the Board of Directors or City Council and the agency or city manager. Three representatives reflecting the Private Water Producers interests (agricultural, dairy, golf course, etc.) are selected by the Private Water Producers. Each entity participates and votes as a unit in the PC. The decision making process is based on consensus. DWR provides a facilitator, a project manager, and technical experts to support and facilitate the decisions of the PC and TC members. Observers to the PC include other Private Water Producers, attorneys, and/or consultants representing various members, and representatives of the Soboba Tribe.
The list of participants in the PC at the time of adoption of this Plan is presented in Appendix E.
2.4.2 HEMET/SAN JACINTO TECHNICAL COMMITTEE
The PC formed a TC to compile, share, interpret, evaluate, and reach agreement on data; to define problems; and to address the PC's technical issues and make recommendations to the PC.
Committee membership consists of representatives assigned by the Public Agencies, the Private 21 Hemet/San Jacinto Groundwater Management Area
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Water Producers, and DWR and an engineering consultant provided by DWR as a neutral thirdparty participant. The representative from LHMWD served as the TC chairman. Through a collaborative effort, the TC developed the data set (WRIME, 2003a) that provides the basis for understanding the area’s hydrology, and has identified potentially feasible initiatives, programs, and projects to enhance the safe yield of the Management Zones.
The list of participants in the TC at the time of adoption of this Plan is presented in Appendix E.
2.4.3 HEMET/SAN JACINTO CONSULTANT-ATTORNEY-MANAGERS COMMITTEE The PC formed the CAM Committee, consisting of technical, legal, and management representatives of each Public Agency, assisted by the DWR project manager and facilitator.
The role of the CAM Committee is to facilitate the preparation of technical and legal documents in support of the Stipulated Judgment, the Agreement, and the Plan. Tasks assigned to the CAM Committee include: the development of contractual agreements and MOUs, and the evaluation of the financial impacts to the community for consideration and action by the PC.
The CAM Committee provides administrative or policy recommendations to the PC.
The list of participants in the CAM Committee at the time of adoption of this Plan is presented in Appendix E.
2.5 RELATED GROUNDWATER MANAGEMENT ACTIVITIES
There have been numerous investigations and technical analyses conducted in the Management Area. This section highlights more recent reports that were produced to support the Plan, reviewed by the TC, and used by the PC to make decisions. There has been a significant amount of work completed by the local agencies documented in the form of presentations to the PC and the TC. These include:
Analysis of EMWD Fruitvale water transfer and use by other agencies; Analysis of Conveyance (export) water from the Management Area; Reconciliation of the Groundwater Production records amongst the participants; Estimation of basin overdraft;
Review and assessment of the San Jacinto Watershed Groundwater Model; and Recycled water use and activities.
A Basin Assessment Study was undertaken in 2003 by the local stakeholders with the support of DWR in order to evaluate the existing conditions of the Management Area, evaluate likely future conditions, and develop and evaluate potential conjunctive use opportunities in the 22 Hemet/San Jacinto Groundwater Management Area
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Management Area. To support the Basin Assessment Study, the following Technical Memoranda (TM) and reports were produced:
Operational Yield Study, Hemet/San Jacinto Groundwater Management Area (WRIME, 2003d);
Technical Memorandum No. 1 (TM1), Assessment of Historical and Projected Land and Water Use Data (WRIME, 2003a);
Technical Memorandum No. 2 (TM2) - Description of Preferred Potential Conjunctive Use Projects (WRIME, 2003c);
Basin Assessment Study Executive Summary (ES) (WRIME, 2003b); and Draft Technical Memorandum No. 3 (TM3) - Analysis of Impacts of Conjunctive Use Projects (January 2004).
The Operational Yield Study, Hemet/San Jacinto Groundwater Management Area presents estimates of the operational yield of the Management Area. Several time periods were used to examine the water budgets of each Management Zone and the Management Area as a whole under various hydrologic conditions. The purpose of the report was to review the previous estimates of hydrologic water budget and reconcile differences in the previously prepared water budgets, and to achieve a consensus on the assumptions, data, methods, and yield of the basin. The long-term period of 1958-2001 was used since it had the best available data at the time and represented a balanced hydrologic period, with wet, dry, and normal periods similar in frequency to the overall historical record.
Hemet/San Jacinto Basin Assessment Study – Basin Assessment Report/Integrated Water Management Plan, Technical Memorandum No. 1 (TM 1), Assessment of Historical and Projected Land and Water Use Data presents background and available data, and analyzes the quality and utility of the data for evaluating basin conditions. The data presented in TM 1 include historical groundwater production, water diversions, water sales, and imported water. The purpose of the report was to obtain agreement on existing conditions, document assumptions, and provide a baseline for purposes of future comparison.
Hemet/San Jacinto Basin Assessment Study – Basin Assessment Report/Integrated Water Management Plan, Technical Memorandum No. 2 (TM 2), Identification and Description of Potential Conjunctive Use Projects presents the process and basis of selection of sites for further evaluation for potential conjunctive use projects. Seven sites were selected from an initial group of 15. The sites were ranked based on screening criteria that included: general site characteristics (size, recharge needs, ownership, etc.), recharge water sources, hydrogeologic suitability, sub-basin interactions, engineering suitability, land use suitability, and environmental impacts. An initial screening was also performed for two potential in-lieu projects. 23 Hemet/San Jacinto Groundwater Management Area
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Hemet/San Jacinto Basin Assessment Study – Executive Summary provides a summary of TM 1 and TM 2.
Draft Hemet/San Jacinto Basin Assessment Study – Basin Assessment Report/Integrated Water Management Plan, Technical Memorandum No. 3 (TM 3), Analysis of Impacts of Conjunctive Use Projects (January 2004) presents a summary of available information on seven potential recharge sites and two potential in-lieu sites for conjunctive use. Draft TM 3 synthesizes information from multiple sources to compare potential recharge sites and proposes preferred sites and documents any additional study or data needs. The TM 3 was presented to the TC in draft form, and comments were received. Due to initiation of the development of the Water Management Plan, the work to finalize TM 3 was re-scoped, which obviated the need to prepare a final TM 3.
Significant other work has been performed and documented by EMWD. These reports include planning documents and feasibility studies with modeling efforts:
West San Jacinto Groundwater Basin Management Plan;
Hemet/San Jacinto Water Management Area 2004 Annual Report; Hemet-San Jacinto Recharge and Recovery Program- Feasibility Study; Regional Groundwater Model for the San Jacinto Watershed; Hemet-San Jacinto Integrated Recharge and Recovery Program- Feasibility Study Groundwater Flow Model;
Lake Elsinore and Canyon Lake Nutrient Source Assessment; Groundwater Infiltration Predictions Using Surface Water Model Output for the San Jacinto Watershed;
Development of the Regional Water Resources Database (RWRD); and Preliminary Design Report for the San Jacinto Agricultural In-Lieu Water Supply Project.
West San Jacinto Groundwater Basin Management Plan (EMWD, 1995). This plan was prepared in accordance with Assembly Bill 3030. This groundwater management plan covers the western portion of the EMWD service area in the San Jacinto Watershed. Since the groundwater management in the eastern San Jacinto watershed was being developed under Association in the early 1990s, the Management Area was excluded from the AB3030 planning process. The goal of the West San Jacinto Groundwater Basin Management Plan is “to maximize the use of groundwater for all beneficial uses in such a way as to lower the cost of water supply and to improve the reliability of the total water supply for all water users in the West San Jacinto Groundwater Basin Management Area” (EMWD, 2004). Implementation of the plan included the establishment of an Advisory Committee; Management Zone prioritization; and 24 Hemet/San Jacinto Groundwater Management Area
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groundwater resources evaluation including groundwater quality and level monitoring, extraction monitoring, and hydrogeophysical investigations.
Hemet/San Jacinto Water Management Area 2004 Annual Report (EMWD, 2005b). As part of the reporting process to the Management Area stakeholder group, EMWD produces annual reports that summarize groundwater quality, level, and extraction monitoring results, and provide an update on activities and progress toward meeting the previous year’s recommendations and goals of the groundwater management plan. The first annual report for the Hemet/San Jacinto Area was produced in June 2005.
Hemet-San Jacinto Recharge and Recovery Program- Feasibility Study (Psomas, 2003). This report documents the feasibility of a proposed recharge project. The proposed Hemet/San Jacinto Integrated Recharge and Recovery Program consists of average annual recharge of 43,750 acre-feet (AF) based on long-term hydrology at a site within the City of Hemet and near the San Jacinto River’s confluences with Poppet and Bautista Creeks. This program involves the construction of approximately 15 recharge ponds on a 100-acre site in the San Jacinto River channel, construction of new pipeline facilities, upgrade of existing pump stations, and construction of new extraction wells at various locations within the Management Area. In order to assess the feasibility of the proposed program, a comparative analysis was completed to evaluate potential alternatives to the preferred option of recharging imported water.
Regional Groundwater Model for the San Jacinto Watershed (TechLink Environmental, 2002a). This report documents the development of a regional groundwater flow and transport model for the San Jacinto watershed basin within EMWD’s service area, an area that includes the Management Area as well as the areas to the west included in the West San Jacinto Groundwater Basin Management Plan. Regional Groundwater Model for the San Jacinto Watershed includes review of available data, development of a conceptual model, setup of a flow and transport model, calibration of the model, and simulation of management scenarios.
Hemet-San Jacinto Integrated Recharge and Recovery Program - Feasibility Study Groundwater Flow Model (TechLink, 2002b). This report documents the application of the regional groundwater model to evaluate the various recharge and recovery activities and alternative water supplies.
These model simulations are intended to compare project and no-project alternatives, evaluate the aquifer capability to store large volumes of water, and evaluate the availability of recharged water for extraction.
Lake Elsinore and Canyon Lake Nutrient Source Assessment (TetraTech, 2003). TetraTech developed a watershed model of the San Jacinto watershed for the Lake Elsinore and San Jacinto Watershed Authority and the RWQCB as part of the Lake Elsinore and Canyon Lake Nutrient Source Assessment. The model provided a framework for nutrient source assessment through representation of contributing land uses in a subwatershed network and subsequent 25 Hemet/San Jacinto Groundwater Management Area
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determination of required nutrient load reductions and allocations to Total Maximum Daily Load (TMDL) objectives. Relating to the Management Area, the report showed that nutrients from the Management Area only reach the lakes when Mystic Lake overflows.
Groundwater Infiltration Predictions Using Surface Water Model Output for the San Jacinto Watershed (TetraTech, 2004). This report documents the update and modification of the watershed model by TetraTech to support EMWD’s development of a groundwater model of the San Jacinto River basin to simulate aquifer storage in the region. The update and modification included extension of the modeling period from January 1984 to March 2003, division of one subwatershed into 4 subwatersheds, and modification of model output. The model was validated and scenarios were run.
Regional Water Resources Database (EMWD, 2005c). A RWRD was developed for EMWD in 2004 to house the existing and future groundwater-related records and to interface Geographic Information System (GIS) maps and aerial photographs. The RWRD contains information for groundwater levels and extraction; streamflow and diversions; well information, construction data, downhole logs, and well/aquifer pump tests; precipitation; temperature; evaporation; imported water usage and quality; conjunctive use; and water quality data from other laboratories and published reports. While no formal document is available to-date describing the full development and implementation of this project, Regional Water Resources Database presents a concise summary of the capabilities of this important component of data management in the region.
Preliminary Design Report for the San Jacinto Agricultural In-Lieu Water Supply Project (Engineering Resources of Southern California, 2005). This report details how recycled water could be incorporated into existing irrigation infrastructure and how to be consistent with the regulatory constraints associated with recycled water use. This included study of water demands, pipeline alignment and size, and environmental issues and resulted in the development of a preliminary plan and cost estimate. The preliminary plan included 13,200 feet of 24-inch pipeline serving Rancho Casa Loma and Scott Brothers Dairy Farms. Total irrigation demand from these farms is estimated at 8,640 AFY. Of this amount, the project could deliver 3,215 AFY due to limited availability of recycled water during the summer months. The project is estimated to take 13 months to complete.
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SECTION 3 WATER MANAGEMENT PLAN ELEMENTS
The elements of this Plan include water management goals and a set of management strategies that discuss and identify the actions necessary for meeting the goals.
3.1 MANAGEMENT PLAN GOALS
The Plan has eight primary goals derived from the Principles and the Agreement. Each of the goals, listed below, is briefly discussed in subsequent sections:
Address pumping overdraft and declining groundwater levels, Provide for Soboba Tribe prior and paramount water rights, Ensure reliable water supply,
Provide for planned urban growth,
Protect and enhance water quality,
Develop cost-effective water supply,
Provide adequate monitoring for water supply and water quality, and Supersede the Fruitvale Judgment and Decree.
3.1.1 ADDRESS PUMPING OVERDRAFT AND DECLINING GROUNDWATER LEVELS The Principles and the Stipulated Judgment recognize that groundwater levels within the Management Area have generally been declining for a number of years, and that the Management Area is presently in a condition of groundwater overdraft. The amount of groundwater overdraft is estimated to range from 10,000 to 15,000 AFY. This Plan has a goal of reducing the overdraft in the short-term, and completely eliminating the annual overdraft in the long-term. The timeframe will depend on the extent of overdraft, as more knowledge is gained through the years. For example, a six-year period would be needed to eliminate overdraft if there is an annual overdraft of 10,000 AF.
The Principles identify management strategies to be included in the Plan to reduce overdraft and ensure a long-term supply of reliable water for current and future uses. The Plan contains both management (non-structural) and capital facility (structural) elements to reduce demand and/or increase the available supply. The management elements include: reduction in native groundwater production; enhanced recharge with local runoff, imported, and/or recycled water; and water conservation programs. Short-term planned reductions in pumping are part 27 Hemet/San Jacinto Groundwater Management Area
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of the Plan while further supplies are obtained through the identified management elements.
The management strategies are described in more detail in Section 3.2.
3.1.2 PROVIDE FOR SOBOBA PRIOR AND PARAMOUNT WATER RIGHTS The Agreement with the Soboba Tribe provides for financial obligations, settlement of all water rights claims, and water purchases from MWD, including infrastructure and groundwater storage. The Plan requires that all parts of the Agreement with the Soboba Tribe be met. The management elements to ensure this include: recognition of 9,000 AFY of Soboba Tribe water rights and up to 4,100 AFY of water use in Canyon and Upper Pressure Management Zones for the first 50 years from the date of Settlement, purchase of replenishment water, and MWD's long-term average delivery of 7,500 AFY of imported water.
3.1.3 ENSURE RELIABLE WATER SUPPLY
Reliability is a key component of any water supply system. This goal of the Plan is to ensure that the Public Agencies have a consensus and commitment to develop a comprehensive water supply portfolio that realizes all potential opportunities, and that plans are in place to adapt to changing demands, natural disasters, and drought conditions. Such a portfolio should rely on a range of sources of water supply and include a large component of local supply and storage.
These objectives minimize, to the extent possible, reliance on weather patterns, over-stressed aquifers, and over-allocated imported water. The Plan elements that address these goals include imported and recycled water use.
3.1.4 PROVIDE FOR PLANNED URBAN GROWTH
The Management Area, like much of the Inland Empire area of Southern California, is experiencing dramatic urbanization. The Principles and the Plan recognize and acknowledge that the Management Area will continue to experience residential, commercial, and industrial growth and development, and that the existing water production and service systems will need to be expanded to meet this growth. This urbanization will affect water supplies in several ways. Urban development on non-irrigated lands will increase water use. Urban development and conversion of irrigated lands may not significantly increase water use, but the urban water use requires a more dependable, higher quality water supply. It is estimated that at least 15,000 AFY incremental water supply capacities over the existing Base Production Rights of Public Agencies must be dedicated to adequately serve this growth. The Plan will help local communities comply with recent changes in state law effective January 2002 (SB 221 and SB 610) requiring municipal suppliers, water districts, and cities or counties to document water availability from all sources in normal, dry, and multiple dry years whenever land use decisions 28 Hemet/San Jacinto Groundwater Management Area
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are made. Planned urban growth, as identified in prevailing land use and general plans, or in approved Urban Water Management Plans (UWMP), provided the basis for all demand forecasts and assumptions in the Plan.
3.1.5 PROTECT AND ENHANCE WATER QUALITY
The Management Area has some of the highest quality groundwater in the San Jacinto Watershed, but it has its own problems and issues. Nitrates and Total Dissolved Solids (TDS) concentrations have historically increased as the area experienced urban and agricultural growth. As noted above, urban uses will replace agricultural uses, resulting in more stringent water quality standards for most constituents, including nitrates. The Plan seeks to meet goals for water quality through preventing degradation of the groundwater due to activities in the Management Area, and as a result of implementation of the Plan. Each of the Public Agencies also seeks to prevent degradation or to improve groundwater quality to avoid high costs for drinking water treatment.
3.1.6 DEVELOP COST-EFFECTIVE WATER SUPPLY
Equitable distribution of costs and benefits are part of the Plan. It is important that the Plan elements are selected and implemented in a way that keeps costs to a minimum so as to keep water bills as low as possible for customers. Cost management includes purchasing imported water at low rates; utilizing groundwater storage space; fully utilizing existing infrastructure; promoting conservation; efficiently implementing new infrastructure; and maintaining good quality groundwater and surface water to keep treatment costs low. The Public Agencies also seek to cost-effectively reclaim municipal wastewater for beneficial reuse whenever possible.
3.1.7 PROVIDE ADEQUATE MONITORING FOR WATER SUPPLY AND WATER QUALITY Monitoring programs will be implemented to determine if the Plan’s goals are being met; to document that anticipated benefits are being achieved; and to predict future needs. Included in the monitoring should be water quality, sampled at sufficient locations to be representative, with analysis for all constituents of concern. In addition, the monitoring program should include monitoring of water levels, well metering, and tracking of imported water and recycled water availability and deliveries. Monitoring can also be used to improve yield estimates and groundwater model performance through the development of better estimates of stream recharge and other components. The results of monitoring will be used to strengthen or relax actions needed to meet Plan goals.
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3.1.8 SUPERSEDE THE FRUITVALE JUDGMENT AND DECREE
The Fruitvale Judgment and Decree (The City of San Jacinto, et al., v. Fruitvale Mutual Water Company, et al., No. 51546, Riverside County) was entered into Book 72, Page 164 of Judgments, Riverside County, on June 4, 1954. EMWD, as successor in interest to FMWC, is subject to the provisions of the Judgment and Decree. Provisions in the document are discussed and summarized in Section 2 of this Plan. The Stipulated Judgment and its Water Management Plan are to supersede the Fruitvale Judgment and Agreement subject to certain exceptions in Section 3.5 of the Stipulated Judgment.
3.2 WATER MANAGEMENT PLAN STRATEGIES
To meet the stated goals of the Plan, the stakeholders have adopted the following specific strategies.
3.2.1 REDUCE PUBLIC AGENCY NATIVE GROUNDWATER PRODUCTION The Public Agencies have agreed to reduce native groundwater production so that total production is within the Safe Yield of the Management Area. The average annual groundwater production in the Management Area for the hydrologic period 1958-2004 is estimated to be 54,800 AFY. The initial estimate of Safe Yield is 45,000 AF. The Public Agencies have also agreed to a 10% reduction from each Base Production Right in the first full year after entry of the Stipulated Judgment. The Public Agencies’ share of Safe Yield is calculated based on their Adjusted Production Right, and is discussed further in Section 11. Within the first six years, the Watermaster will make a determination of the Safe Yield of the Management Area. Thereafter, the Safe Yield shall be reviewed and modified, if necessary, upon the recommendation of the TC or as the Watermaster may determine. Until Adjusted Production Rights are consistent with the Public Agencies' share of Safe Yield, the Watermaster will determine the required reductions in Adjusted Production Rights in each subsequent year to achieve Safe Yield within a reasonable period of time as determined by the Watermaster. The Watermaster is to consider the extent of the overdraft, the economic impact on the parties bound by this Judgment, and other relevant factors in determining the total and pro-rata shares of Adjusted Production Rights. The goal is to achieve production at the same level as Safe Yield over a six-year period assuming an annual overdraft of 10,000 acre-feet. In the event the extent of the overdraft is different than assumed, then the period of time reasonably required to reach Safe Yield may be extended or reduced accordingly. However, in no event shall any reduction for any Public Agency be more than 10% of the Adjusted Production Rights of the prior year. 30 Hemet/San Jacinto Groundwater Management Area
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3.2.2 IMPLEMENT THE SAN JACINTO RIVER RECHARGE AND RECOVERY PROJECT The stakeholders have agreed that Phase I of the IRRP is the primary project considered to be the core of the Physical Solution. The stakeholders are working towards an agreement for Phase I of the IRRP project which documents their agreement on the ownership, financing, and operation of the facilities.
The information presented here is based on previously published documents adjusted when appropriate based on the latest knowledge at the time of publication of the Plan.
Phases I and II of the IRRP are designed to recharge (replenish) imported water and extract groundwater at a capacity such that the following goals are met:
Satisfy the Tribe's prior and paramount rights as set forth in the Agreement with the Tribe by providing an average annual supply of 7,500 acre-feet pursuant to the terms of such agreement. The proposed Program would provide the MWD with the right to store up to 40,000 acre-feet of imported water in the Upper Pressure Sub-basin as advance deliveries under its agreement to provide an average annual supply of 7,500 acre-feet.
Offset the existing overdraft of the Management Area, estimated at approximately 10,000 AFY.
Provide approximately an additional 15,000 AFY of water storage to help meet projected demand increases.
Major elements of Phase I of the Project are (Figure 3.1):
Modifications to Pump Stations (Warren and Commonwealth); Construction of Pipelines;
Design and Construction of Recharge Basins;
Drilling Three (3) Extraction Wells;
Installation of Pumps and Chlorination Equipment for Three (3) Extraction Well; and
Design and Installation of Three (3) Monitoring Wells.
The project is designed and implemented in two Phases. While project Phase I activities are defined in detail, Phase II of the project is defined at conceptual level and the detailed design will be developed in the future.
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Warren Pump Station
Commonwealth Pump Station
HEMET
SAN JACINTO
·|}þ79
·|}þ74
SAN JACINTO RIVER
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Pump Station
Phase I Pipeline
Phase I Ponds
Existing Pipeline
Phase I Well Field
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Schematic of Integrated
Recharge Recovery
Program - Phase I
Figure 3.1
Source: EMWD
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3.2.2.1 Phase I
This phase of the project consists of the construction of the San Jacinto Integrated Recharge and Recovery Project, which will provide up to 42 cubic feet per second (cfs)* of recharge water capacity. Phase I is scheduled to be completed by December 2008*, and will cost approximately $16.2* million. Major activities during Phase I are:
1. Completion of Environmental Process - The Environmental Impact Report (EIR) was prepared and adopted in August of 2004. Additional permitting requirements include Section 7 consultation with USFWS and issuance of Biological Opinion by the appropriate federal agency.
2. Acquisition of Land - A 100 acre parcel has been purchased by EMWD for required habitat mitigation measures for a 35 acre* parcel that is dedicated to recharge basins. In addition, EMWD is in the process of acquiring approximately one acre of land (in several parcels) for monitoring wells.
3. Approval, Advertising, and Award of Construction Contract - The EMWD Board of Directors has approved the bidding process.
4. Drilling of Extraction Wells No. 1, 2, and 3 - This includes construction and testing of three 18-inch diameter extraction wells, each to a depth of approximately 1,000 feet.
5. Installation of Pump and Chlorination Equipment for Wells No. 1, 2, and 3 - This includes installation of pump and chlorination equipment, appurtenances and site improvements required to complete and operate the new extraction wells.
6. Modifications to the Pump Station - This includes modifications to the Warren and Commonwealth Pump Stations. The modifications include upgrades to increase pump station capacity to provide a seasonal maximum of 42 cfs* to the recharge basins.
7. Construction of Recharge Basins - This activity includes construction of six recharge ponds within the San Jacinto river bed in two clusters of three ponds each. The footprint of the recharge area will be approximately 35 acres*, along the west side of the San Jacinto River, immediately upstream of the river confluence with the Meridian Channel.
8. Construction of Pipelines - This includes design and construction of pipelines and appurtenances to convey, regulate, and meter raw imported water flows into the recharge basins. Pipelines include two (2) 24-inch diameter laterals to convey water from an existing 33-inch diameter transmission main along the proposed Ramona Expressway alignment to the first basin in each of the two basin clusters.
There will be appurtenances including regulation valves, meters to record water
*
Number has been updated since the publication of the IRRP Feasibility Report. 33 Hemet/San Jacinto Groundwater Management Area
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flow, telemetry-based flow control systems, and discharge piping into the recharge basins.
9. Design and Construction of Monitoring Wells - Three monitoring wells will be constructed outside the river bed along the west berm. The wells are designed to monitor the vertical and lateral migration of recharge water into the underlying aquifer zones. These clustered wells will be multi-cased and perforated to monitor the groundwater levels at various depths.
The overall project size may change as a result of negotiations with regulatory agencies.
3.2.3 IMPLEMENT GROUNDWATER REPLENISHMENT PROGRAM
The groundwater aquifers in the Management Area are a valuable resource and provide many advantages to operating a reliable water supply system. For many Private Water Producers, groundwater is their sole source of water. Declining water levels increase costs for pumping water and can also cause wells to go dry, requiring deeper drilling, or can result in the intrusion of poor quality groundwater from neighboring Management Zones, rendering the groundwater unsuitable for many beneficial uses. Also, the replenishment of high quality imported water from the State Water Project or high quality runoff from the surrounding mountains can maintain or improve the quality of the groundwater in the Management Area.
Groundwater replenishment, therefore, is a major part of the water management strategies considered by the stakeholders. Replenishment efforts to increase water supply in the Management Area can be grouped into two categories:
1. Direct replenishment of groundwater to store water for future use; and
2. Augmentation of imported or recycled water supplies to provide immediate increases in water supply and the associated decrease in groundwater pumping.
Often, these categories are combined, with increases in imported or recycled water being used to replenish groundwater for future use.
3.2.3.1 Enhancing Natural Replenishment
The Management Area already receives a significant amount of natural recharge, from sources such as direct recharge from precipitation and infiltration from the San Jacinto River and its tributaries. While much of this water is able to infiltrate naturally, natural recharge could be increased by capturing surface flows during storm events, allowing the water to infiltrate over time rather than be swept out of the Management Area. As part of the Basin Assessment Study, the TC has identified and considered several conjunctive use and natural replenishment projects that have the potential to address such a water supply management strategy. These are described in Section 5.3 of the Plan.
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3.2.3.2 Additional MWD Replenishment Water
Utilizing replenishment allows for significant cost savings when purchasing imported water from MWD. MWD provides special rates for water used for replenishment purposes. This water is available during the low-demand winter period and currently costs $238/AF for untreated water, while full-service Tier 1 & 2 untreated water currently costs $331/AF and $427/AF, respectively.
3.2.4 EXPAND THE USE OF RECYCLED WATER
Recycled water is available from EMWD’s San Jacinto Valley Regional Water Reclamation Facility. Currently, recycled water is used by agricultural users and other large-scale outdoor irrigators such as golf courses and municipal facilities in place of groundwater. The Watermaster will use recycled water as a significant part of its water supply strategy for replenishment of the groundwater basin. The Watermaster will work with EMWD to determine the operational constraints currently facing the availability of recycled water for replenishment of the basin. The recycled water is to follow the State and Federal guidelines. Future phases of the Plan include upgrade of the San Jacinto Valley Regional Water Reclamation Facility to tertiary treatment.
3.2.4.1 Continue and Expand the In-Lieu Replenishment with Recycled and/or Imported Water
In-lieu replenishment with recycled and/or imported water provides many benefits over direct replenishment of the groundwater. In-lieu involves utilizing an alternate source, in this case imported or recycled water, instead of pumping groundwater. Using in-lieu recharge means that there is no cost to pump groundwater, no land is needed for a spreading basin, and there is no constant recharge through a basin to push salts out of the unsaturated zone. Disadvantages include timing of the supplies with demand; that is, most in-lieu customers cannot use the quantity of water available during the off-peak time. To maximize use of water available for inlieu replenishment, significant infrastructure will be needed to serve the maximum number of customers. This strategy would require the Watermaster to work with EMWD, other agencies, and Private Water Producers to develop specific plans for expanding the use of recycled water for in-lieu replenishment of the basin.
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3.2.4.2 Expand and Upgrade the San Jacinto Valley Regional Water Reclamation Facility
The San Jacinto Valley Regional Water Reclamation Facility is currently an 11 MGD plant with capability to treat wastewater to a secondary level of treatment. While this plant is scheduled for upgrade to tertiary treatment, the recycled water discharge beyond the sale to the agricultural customers is currently being disposed of in the basin. The plant is scheduled for expansion in size and upgrade of the treatment level, and the upgraded plant will have the capacity to treat 14 MGD by 2011 and 18 MGD by 2024. The Watermaster shall have the right of first refusal to purchase all recycled water produced from the treatment facilities serving the Management Area that is not subject to then existing contracts. The Watermaster will analyze the need and decide on the amount of recycled water for direct recharge and/or direct delivery.
3.2.5 PROVIDE FOR RELIABLE WATER SUPPLY TO MEET THE FUTURE DEMAND The Plan is to provide sufficient water supplies to meet future water demands in the Management Area. This strategy is tied directly to the IRRP that is designed to provide 15,000 AFY of additional supplies to meet the projected water demands. As part of this strategy, additional conjunctive use projects, identified in Section 5.3 of this Plan, will augment Phase II of the IRRP. These projects are mostly designed to capture winter run-off for recharge, unlike the IRRP that is designed to recharge imported water.
3.2.6 IMPLEMENT ADDITIONAL WATER CONSERVATION MEASURES
The current level of water conservation has significantly helped to reduce the water demand in the Management Area. In addition to the conservation measures implemented by the Public Agencies, additional conservation measures can be designed and implemented by the agricultural and dairy water users. The Watermaster, in coordination with the Agencies, should develop specific strategies for additional water conservation. In addition, they should identify practical steps and means for voluntary implementation by the agricultural and dairy water users that would help water management of the basin.
3.2.7 IMPLEMENT AND EXPAND MONITORING PROGRAM
At the heart of any water management plan is a robust monitoring program capable of assessing the status of the basin and monitoring the responses to future management actions.
EMWD, on a voluntary basis, has compiled historical groundwater elevation and quality data from mid-1950s through the present. In the early data collection efforts, the location and 36 Hemet/San Jacinto Groundwater Management Area
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frequency of monitoring were not as consistent as the more recent measurements. This was mostly due to the voluntary nature of participation in the monitoring program, as well as funding availability. This lack of consistency in data collection hampers rigorous and thorough analysis. However, long-term hydrographs as well as contours of groundwater levels have been produced by EMWD to present long-term trends in groundwater conditions over time, and with appropriate geographic extent.
In 2004, the Hemet/San Jacinto Groundwater Monitoring Program was initiated to collect, compile, and analyze groundwater-related data. This program was undertaken by the Public Agencies and DWR. The monitoring program provides the information necessary for a comprehensive view of the Management Area, and contains the following elements:
Groundwater Level Monitoring;
Groundwater Quality Monitoring;
Groundwater Extraction Monitoring; and
Inactive Well Capping and Sealing.
Finally, the monitoring program utilizes EMWD’s RWRD, for assembling and assessing groundwater-related data in the Management Area. All Public Agencies provide data on their wells and assist in communicating with private well owners in their respective jurisdictions to collect their data and information.
This strategy reconfirms that the monitoring program, as established in 2004, should continue and be expanded to new areas. The Stipulated Judgment requires that the Watermaster implement a monitoring program to ensure that Plan activities follow best management and engineering principles to protect Management Area water resources, and to compile and analyze data on groundwater production, water levels, water quality, and groundwater in storage. The Watermaster, in coordination with EMWD and other Public Agencies, will develop plans for expansion of the monitoring program, as well as, specific actions for implementation of the monitoring program in the Management Area. Funding for the monitoring program will come from the Administrative Assessment, as detailed in Section 10.3.1.
3.2.7.1 Groundwater Monitoring
Groundwater level and quality monitoring are valuable, but can be costly and time consuming.
A robust network of monitoring wells can be established to develop the optimum amount of data on groundwater. Some criteria to be used in the development or modification of the network may include:
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Monitor the same well for selected seasons over many years to understand trends and variability;
Develop an unbiased distribution of monitoring wells, aerially and vertically, that account for differences in:
Topography,
Geology and soils,
Climate, and
Land Use;
Maintain supporting data to aid in analysis, including:
Meteorological data,
Hydrologic data, and
Land use data, including pumping and irrigation;
Monitor at a frequency that captures variability of water level and water quality fluctuations;
Utilize wells, to the extent possible, intended solely for groundwater monitoring, not production; and
Maintain high levels of data quality.
The Watermaster is to work cooperatively with the Public Agencies and Private Water Producers to establish an optimum network of monitoring wells for collection and analysis of groundwater trends and variability.
3.2.7.2 Surface Water Monitoring
Surface water monitoring would build on the existing cooperative program between EMWD and the United States Geological Survey (USGS). This program monitors streamflow on the San Jacinto River just upstream of State Street and on Lamb Canyon Creek near Victory Ranch. The USGS also monitors a gage on the San Jacinto River at the Cranston Ranger Station. Continued and additional surface water flow and quality monitoring would include the following criteria:
Monitor the same location for many years to understand trends and variability; Maintain supporting data to aid in analysis, including:
Meteorological data,
Groundwater data, and
Land use data, including pumping and irrigation; and
Maintain high levels of data quality.
Gaging station should be installed on reaches not currently being monitored, such as:
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San Jacinto River near Main Street;
San Jacinto River near Highway 74 bridge crossing;
Bautista Creek near Highway 74 bridge crossing; and
Salt Creek near State Street.
The Watermaster is to work cooperatively with the Public Agencies to establish specific monitoring locations for collection and analysis of surface water trends and variability. 39 Hemet/San Jacinto Groundwater Management Area
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SECTION 4 STATE OF THE MANAGEMENT AREA
This section discusses the local geologic and hydrologic conditions that provide the foundation for the development of the Plan. The ability to manage available water supplies is to a large degree governed by naturally occurring conditions and the physical environment. This section further describes water supply conditions and sources; historical and current water demands; status of the groundwater basin; and summarizes water quality conditions.
4.1 GEOGRAPHY AND CLIMATE
4.1.1 GEOGRAPHY
The Management Area is located in western Riverside County, approximately 70 miles southeast of the City of Los Angeles. The area encompasses the Cities of Hemet and San Jacinto; unincorporated residential/commercial areas, including Valle Vista; and agricultural lands. State Highway 74 (Florida Avenue) crosses the valley in an east-west direction and State Highway 79 provides a north-south corridor for the region. The San Jacinto mountain range, to the east of the valley, is the dominant geographic feature of the region, rising to a height of 10,805 feet at Mount San Jacinto. Elevations on the valley floor range from approximately 1,400 to 1,800 feet. There are various bedrock outcrops in the area, none of which exceed 2,700 feet.
The San Jacinto Watershed (Figure 4.1) includes the Management Area and surrounding mountains and covers an area of approximately 728 square miles, measured above a point just downstream from Railroad Canyon Dam. All of the streams and rivers in the watershed are ephemeral, flowing only when precipitation occurs and losing much of this flow to groundwater infiltration. The San Jacinto River arises in and drains the western slopes of the San Jacinto Mountains. Waterways tributary to the river include the North and South Forks and Strawberry, Indian, Poppet, and Bautista Creeks. Lake Hemet, located in the mountains on the South Fork of the San Jacinto River, is a 12,775 AF capacity LHMWD-operated reservoir completed in 1895. The San Jacinto River recharges the groundwater basin, primarily in the area southeast of the City of San Jacinto. It then occasionally flows northwest past the Lakeview Mountains, filling Mystic Lake, before turning southwest to flow across the Perris Valley floor.
The San Jacinto River ultimately flows into Lake Elsinore via Railroad Canyon and Canyon Lake. Lake Elsinore, when full, overflows into Temescal Wash, which joins the Santa Ana River near Prado Dam.
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! !
!
RAILROAD
CANYON
RESERVOIR
Hemet
Perris San Jacinto
Lake Elsinore
LAKE MATTHEWS
LAKE
ELSINORE
LAKE
PERRIS
LAKE SKINNER
LAKE
HEMET
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Figure 4.1
0 42
Miles
±
*Source: DWR, 2003
San Jacinto River
Potrero
Creek
Poppet
Creek
Indian
Creek
North Fork
San Jacinto
River
South Fork San Jacinto River
Strawberry
Creek
Salt Creek
Bautista Creek
2 1
3 4
5 6
7 8
9 10
11 1
2 3
4 5 6 7
9 8
10 11
12 13
13 12
Box Springs Mutual Water Company
Legend
San Jacinto Groundwater Basin*
Major Watercourses
Lakes and Reservoirs
! Cities
Management Area
Agency Boundary
City Of Hemet Water Dept.
City Of Perris Water Dept.
Elsinore Valley WD
Fern Valley WD
Idyllwild WD
Lake Hemet MWD
Nuevo Water Company
Pine Cove WD
Soboba Indian Reservation
Western Municipal WD
EMWD
San Jacinto Water Dept
State of the Management Area
4.1.2 CLIMATE
The climate of the area is that of a dry, semi-arid, near-Mediterranean zone, typical of the moderately elevated inland valleys of southern California. The climate is characterized by wet and dry seasons, generally low precipitation, and a large proportion of clear days, moderately high summer temperatures, and mild winter temperatures. The yearly average temperature at the City of San Jacinto is 62°F (25°C). Summer temperatures are often more than 100°F (38°C), and the recorded maximum at San Jacinto is 120°F (49°C). Frost occasionally occurs during the December through February period. The lowest recorded temperature was 7°F (-14°C). The average frost-free period is 247 days long, from March 15 to November 19. These temperatures for the San Jacinto climate station are considered to be generally representative of temperatures throughout the valley area.
Along with the rest of Southern California, the area is subject to the annual Santa Ana winds.
Usually occurring in the fall of the year, these winds blow from the northeast, bringing hot, dry desert air with velocities of up to 50 miles per hour. Relative humidity has at times dropped below 5 percent with temperatures of 105°F (40°C) and higher. This phenomenon normally lasts only a few days, but has been known to last for several weeks, thereby greatly increasing the evaporation rate.
As a result of the hot, dry climate, the area has a high rate of evapotranspiration.
Evapotranspiration is recorded as reference evapotranspiration (ETo; evapotranspiration from a standardized grass surface) by the DWR’s California Irrigation Management Information System. Reference evapotranspiration averages 57 inches per year and is highly seasonal, with an average monthly maximum of 7.9 inches in July and average monthly minimum of 2.0 inches in December (DWR CIMIS, 2006).
Virtually all precipitation falls in the winter months, with some summer thunderstorms.
Topography generally controls the relative amounts of precipitation from one location to the next. The average precipitation on the valley floor is about 13 inches, but near Mt. San Jacinto, the average precipitation is approximately 40 inches. Figure 4.2 shows the distribution of precipitation in the watershed.
The Riverside County Flood Control and Water Conservation District (RCFC&WCD) currently maintains precipitation records from the National Weather Service precipitation gauge at the California Division of Forestry Station at 1st Street and San Jacinto Avenue in San Jacinto (Site #186). Annual San Jacinto precipitation totals for the 1850/51 through 2004/05 rain years (July – June) are shown in Figure 4.3. For the 155 years from July 1850 through June 2005, average precipitation equaled 13.12 inches; median precipitation was 12.13 inches; the year with 43 Hemet/San Jacinto Groundwater Management Area
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Perris
Lake Elsinore
Hemet
San Jacinto
LAKE MATTHEWS
LAKE
ELSINORE
LAKE
PERRIS
LAKE SKINNER
LAKE
HEMET
!11
!15
!14
!18
!16
!13
!12
!20 !22 !24
!26 !28
!30 !32
!34 !36
!38
Legend
Equal Precipitation (in)*
Management Area
Lakes and Reservoirs
Major Watercourses
! Cities
October 2007
Hemet / San Jacinto Water Management Plan
Average Annual Precipitation
Figure 4.2
0 42
Miles
±
*Source DWR, 1978
(1932 - 1964 data)
San Jacinto River
Figure 4.3 Annual Precipitation and Cumulative Departure from Mean Precipitation -30-20-10
0 1020304050
1850 1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 Date
Precipitation (inches)
-30-20-1001020304050
Cumulative Departure from Mean Precipitation (inches)
Annual Precipitation Mean Precipitation Cumulative Departure from Mean Precipitation Mean Precipitation = 13.1"
State of the Management Area
the highest precipitation was 1883/84 with 35.77 inches of rain; and the driest year was 2001/02 with 3.85 inches. Figure 4.3 also shows the cumulative departure from mean precipitation. This chart represents wet periods with increasing values, such as 1882-1890 and 1990-1998; normal periods with near-constant values, such as 1859-1881 and 1980-1988; and dry periods as decreasing values, such as 1944-1976 and 1999-2004.
4.2 SURFACE WATER CONDITIONS
The San Jacinto River and its tributaries are the primary surface water elements in the Management Area. This river and its tributaries provide water for direct use, artificial recharge, as well as for significant natural recharge to the groundwater system through the riverbeds.
The San Jacinto River contains high quality water that flows from the mountain watershed and recharges groundwater. The river is a losing stream throughout the Management Area.
Artificial and natural recharge of San Jacinto River water improves the overall quality and quantity of groundwater. Groundwater levels have been lowered over the years to the point where additional changes in groundwater levels has little or no impact on surface flows or vice versa, although in predevelopment conditions groundwater contributed to surface flows in swampy areas of the basin floor, particularly upgradient of faults.
EMWD and RCFC&WCD have partnered with USGS to monitor stream flows. USGS gaging stations along the San Jacinto River and its tributaries in the Hemet/San Jacinto and surrounding area are listed in Table 4.1, below.
In 1996, EMWD entered into a Cooperative Water Program Joint Funding Agreement with the USGS for a long-term water budget study in the San Jacinto area. As part of this project, the USGS installed two stream flow gages and three stage gages in the San Jacinto Watershed.
The USGS applied a rainfall-runoff model to estimate the water budgets for groundwater and surface water flows and to determine the hydrological effects of urbanization. The study used historical precipitation data with the model to produce a simulated long-term record of groundwater recharge and surface water runoff for a variety of potential urbanized conditions.
The major objectives of the study were to:
1. Estimate groundwater recharge and surface water flows in the Canyon and Upper Pressure Management Zones;
2. Summarize the long-term water budget of the study area upstream of Mystic Lake; and
3. Determine the effects of urbanization in the study area. 46 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
Table 4.1 USGS Surface Water Gaging Stations
Station
No. Description: Lat.; Long.* Data Type Time Frame
11069200 Lake Hemet WC up Canyon near San
Jacinto
33°44'20";
116°49'30" Daily flows 1961-1991
11069300 WF San Jacinto Tributary near Valle Vista 33°43'20"; 116°48'00"
Peak flows
Daily flows
1962-1973
1961-1967
11069500 San Jacinto River near San Jacinto
(Cranston Ranger Station)
33°44'17";
11649'59"
Real time
Peak flows
Daily flows
Water Qual.
1921-present
1920-present
1998
11069501 San Jacinto River near San Jacinto plus
Canals
33°44'17";
116°49'59" Daily flows 1948-1990
11070000 Bautista Creek Near Hemet 33°41'40";
116°51'00"
Peak flows
Daily flows
1947-1969
1947-1969
11070020 Bautista Creek at head of Flood Channel in
Hemet
33°42'42";
116°52'04"
Peak flows
Daily flows
1988-2003
1987-present
11070050 Bautista Creek at Valle Vista 33°44'04";
116°53'33"
Peak flows
Daily flows
1970-1987
1969-1987
11070150 San Jacinto River above State Street near
San Jacinto
33°49'17";
116°58'21"
Peak flows
Daily flows
1997-present
1996-present
11070158 Line D Storm Drain at Santa Fe St. near
San Jacinto
33°46'44";
116°57'46" Peak flows 1997-1999
11070160 Line E Storm Drain at Santa Fe St. near San
Jacinto
33°46'41':
116°58'18" Peak flows 1997-1999
11070185 Lamb Canyon at Victory Ranch near San
Jacinto
33°51'31";
117°00'53" Peak flows 1997-2004
11070190 Laborde Canyon near San Jacinto 33°51'44";
117°01'29" Peak flows 1962-1973
11070210 San Jacinto River at Ramona Expressway
near Lakeview
33°50'23";
117°08'06"
Real time
Peak flows
Daily flows
2001-present
2000-present
* The longitude and latitude measurements are published figures, but were estimated by the USGS from maps and, therefore, only have an accuracy of +/- 500 feet.
Five gages were installed upstream of Bridge Street in the San Jacinto basin area. Two stream flow gages were installed in the San Jacinto River, one at the State Street (Highway 79) crossing and the other at the Cranston Ranger Station. Three crest stage gages were installed in Potrero Canyon near San Jacinto, Lamb Canyon near San Jacinto, and at an urban runoff site.
Groundwater recharge in the Canyon and Upper Pressure Management Zones was calculated in addition to the surface runoff leaving the Management Area (including urban runoff) that reaches the Mystic Lake area. The study results are summarized in the USGS Water Resources Investigations Report 02-4090, Rainfall-Runoff Characteristics and Effects of Increased Urban Density on Streamflow and Infiltration in the Eastern Part of the San Jacinto River Basin, Riverside County, 47 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
California. The report includes all measured, simulated, and statistical data used to support the conclusions of the study.
After the end of the study, some of the crest stage gages were no longer monitored and fell into disrepair. However, EMWD continues to fund, and USGS continues to operate, the stream gage on the San Jacinto River at State Street. The crest stage gage at Lamb Canyon Creek at Victory Ranch is still jointly funded by EMWD and USGS. For the 2005/2006 monitoring, the effort was funded as part of the Hemet/San Jacinto Monitoring Program by EMWD, LHMWD, and the Cities of Hemet and San Jacinto. The stream gage on the San Jacinto River at Cranston Ranger Station is currently funded and maintained by USGS and Riverside County Flood Control District with real-time data available on the USGS website.
4.3 GEOLOGY
The geology of the Hemet/San Jacinto area, relevant to groundwater supplies, has two primary features: a sediment filled graben, and the San Jacinto fault zone. The sediments in the graben provide for the majority of storage and movement of groundwater in the area and the movement of water is altered by the presence of the faults, which provide most of the internal boundaries for the area’s Management Zones.
The Management Area partially contains a geomorphic feature known as a graben or faultgraben, along with additional permeable materials in alluvium-filled valleys. A graben is a depressed, trough-like structure in the Earth's crust, filled or partially filled with sediments, and usually formed by faulting and the relative downward movement of block-like geologic structures. The San Jacinto graben is a deep, sediment-filled structure approximately 2.5 miles wide and more than 20 miles long and forms the Upper Pressure Management Zone’s boundaries in the Management Area. The Management Area, including the graben, is nearly surrounded by impermeable bedrock mountains and hills. Internally, island-like masses of granite and metamorphic bedrock or older alluvium rise above the valley floor. Surface and near-surface sediments in the graben and alluvium filled valleys are primarily sand and sandy silt with some silt and silty clay. The San Jacinto graben consists of a forebay area in the southeast where surface water recharge primarily occurs and a pressure area in the northwest where deep aquifers exist under confined conditions. The northwest-southeast oriented graben is formed by the right-slipping San Jacinto fault zone, believed to be the most seismically active in southern California. Between 1899 and the present, seven earthquakes of Richter magnitude
6.0 or greater have occurred along the San Jacinto fault between the San Gabriel Mountains and Mexico. This complex zone of faulting and cross faulting has two main branches, the Claremont and the Casa Loma, which form the northeast and southwest borders of the graben, respectively (see Figure 4.4).
48 Hemet/San Jacinto Groundwater Management Area
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!
!
San Jacinto River
Diamond Valley Lake
Claremont Fault
Casa Loma Fault
Park Hill Fault
Bautista Creek Fault
S A N J A C I N T O F A U L T Z O N E
Lake Skinner
Hemet
San Jacinto
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Legend
Faults*
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Fault Locations
Figure 4.4
0 1 0.5
Miles
±
*Source: Riverside County
State of the Management Area
The Claremont fault separates the graben from the Badlands and the San Jacinto Mountains on the northeast. This fault follows Gilman Springs Road from State Highway 60 to the City of San Jacinto, hugging the foothills. It then follows the San Jacinto River before shifting to Bautista Creek south of Valle Vista. To the west, the Casa Loma fault generally parallels the Claremont Fault. The Casa Loma portion of the San Jacinto fault zone forms the southwesterly border of the graben. It runs from Park Hill (also known as Casa Loma) to the northwest toward Reche Canyon. The Bautista Creek fault is an extension of the Casa Loma fault, but is separately named due to differences in fault movement (DWR, 1969). The Bautista Creek fault runs from Bautista Canyon through the intersection of Menlo and San Jacinto Streets, joining the Casa Loma fault on the western side of Park Hill.
The portions of the Management Area outside the graben, to the east of the Claremont Fault and to the west of the Casa Loma and Bautista Creek faults, are sediment filled basins. These sediments are similar in nature to those in the graben, but are much thinner.
The faulting in the Management Area plays an important role in the movement of groundwater and is therefore a key factor in the delineation of Management Zones.
4.4 DELINEATION OF MANAGEMENT ZONES
Groundwater Management Zones (Figure 2.1) were delineated by the RWQCB based on major impermeable boundaries (such as bedrock or faults), flow systems that prevent widespread mixing even without a physical barrier, and water quality. Groundwater flow, whether or not determined by a physical barrier, was the primary characteristic used to define the Management Zones. Water quality data were used to support understanding of the flow regime and to assure that unusually high quality or poor quality waters were distinguished for regulatory purposes. (RWQCB, Resolution No. R8-2004-0001).
The four Management Zones within the Hemet/San Jacinto Management Area are:
1. Canyon;
2. San Jacinto Upper Pressure (Upper Pressure);
3. The Hemet North portion of Lakeview/Hemet North (Hemet North); and
4. Hemet South.
The Canyon Management Zone lies along a northwest to southeast axis in the eastern part of the Management Area. The boundaries of the Canyon Management Zone include the virtually impermeable San Jacinto Mountains to the east and Claremont Fault to the west. The Claremont Fault inhibits flow between Canyon and Upper Pressure Management Zones (DWR, 1969; DWR, 1978; SWRB, 1955).
50 Hemet/San Jacinto Groundwater Management Area
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State of the Management Area
Like the Canyon Management Zone, the Upper Pressure Management Zone lies along a northwest to southeast axis in the eastern part of the Management Area. The Upper Pressure Management Zone is bounded by the Claremont Fault to the northeast, the Casa Loma and Bautista Creek Faults to the southwest, and the flow system boundary with the San Jacinto Lower Pressure Management Zone to the northwest.
Boundaries of the Hemet North Management Zone include the Casa Loma Fault to the east; the groundwater divide near Esplanade Avenue to the south; the impermeable bedrock of the Lakeview Mountains to the west; and a constricted area of permeable materials between the Lakeview Mountains and the Casa Loma Fault to the northwest. The Casa Loma fault zone is a known barrier to groundwater flow (DWR, 1969; DWR, 1978; SWRB, 1955).
The Hemet South Management Zone boundaries include the Casa Loma and Bautista Creek faults to the east; the groundwater divide near Esplanade Avenue to the north; the groundwater divide in the Winchester area and various crystalline bedrock outcrops to the west. Diamond Valley Lake, a water supply reservoir for the MWD completed in 1999 and filled by 2002, is located southwest of the Hemet South Management Zone. MWD (1991) states that seepage through the permeable materials in the upper 200 feet may take place. The Casa Loma and Bautista Creek faults are known barriers to groundwater (DWR, 1969; DWR, 1978; SWRB, 1955).
For the Management Area as a whole, the mountains (Figure 4.1) form a nearly impermeable boundary such that there are only three pathways for groundwater to migrate to or from other Management Zones outside the Management Area. These locations are:
Between the Hemet South and Perris South Management Zones, in the southwest;
Between the Hemet North portion and Lakeview portion of Lakeview/Hemet North Management Zones, in the northwest; and
Between the Upper Pressure and Lower Pressure Management Zones, in the northwest.
Groundwater flow in and out of the Management Area is important, as water quality is typically better in the Management Area than in the surrounding areas.
4.5 SOILS
The influence of soils on water use and hydrologic processes makes it an important component to consider when estimating changes in water use due to land use change as well as for siting spreading basins for artificial recharge projects.
51 Hemet/San Jacinto Groundwater Management Area
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State of the Management Area
The predominant soils, as defined in the USDA’s soil survey (USDA, 1971) at the series level, in the Management Area are shown in Figure 4.5 and are listed below:
Dello,
Grangeville,
Greenfield,
Metz,
San Emigdio, and
Traver.
The remaining soils are classified as “Other” in Figure 4.5 and consist of Chino, Domino, Exeter, Hanford, Pachappa, Ramona, Riverwash, as well as other soil series occurring in less than one square mile of the Management Area.
An important soil classification used by the USDA for hydrology is the hydrologic soils group.
The hydrologic soils group can be used to estimate the amount of infiltration that can be expected from a certain soil. This grouping is based on estimates of the intake of water during the latter part of a storm of long duration, after the soil profile is wet and has an opportunity to swell, without the protective effect of any vegetation. Also considered are depths to the seasonal high water table and to a low permeability layer. The classification is useful at a planning level, but detailed studies are required for a thorough understanding of the infiltration capacity of soils. Features such as slope, ground cover, or low permeability materials away from the upper soil profile may impact the soil’s capability to infiltrate water.
Under the hydrologic soils group classification system, soils are grouped A to D with “A” having the lowest runoff potential (highest infiltration rates) and “D” having the highest runoff potential (lowest infiltration rates). A map of hydrologic soils groups is provided as Figure 4.6 (USDA-SCS, 1971) and a corresponding table of hydrologic soil groups and soil series is provided in Table 4.2. As can be seen on Figure 4.6, most of the Management Area is classified as “B”, soils with a moderate infiltration rate. Of the Management area, nearly 80% are “B” soils, 10% are “A” soils, and the remainder are either “C”, “D”, or are deemed too variable to be classified. The “A” soils are generally located along the San Jacinto River and Bautista Creek; much of the “variable” soils along these watercourses also have the potential for very high infiltration rates.
52 Hemet/San Jacinto Groundwater Management Area
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San Jacinto River
Diamond Valley Lake
Lake Skinner
Hemet
San Jacinto
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Legend
Soil Series*
Dello
Grangeville
Greenfield
Metz
San Emigdio
Traver
Other
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Soil Series
Figure 4.5
0 1 0.5
Miles
±
*Source: USDA, 1971
!
!
San Jacinto River
Diamond Valley Lake
Lake Skinner
Hemet
San Jacinto
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Legend
Hydrologic Soils Group*
Group A - High Infiltration Rate
Group B - Moderate Inflitration Rate
Group C - Slow Infiltration Rate
Group D - Very Slow Infiltration Rate
Variable
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Hydrologic Soils Groups
Figure 4.6
0 1 0.5
Miles
±
*Source: USDA, 1971
State of the Management Area
Table 4.2 Hydrologic Soils Groups
Common Soil Series Hydrologic Soils
Group Minor Soil Series Hydrologic Soils Group
Dello A-C Chino B-C
Grangeville B-C Domino C
Greenfield B Exeter C
Metz A Hanford B
San Emigdio B Pachappa B
Traver B-C Ramona B-C
Riverwash variable
Other variable
4.6 GROUNDWATER CONDITIONS
As previously stated, groundwater flow between Management Zones is inhibited by geologic faults, (Figure 4.4) notably the Casa Loma Fault, Bautista Creek Fault and Claremont Fault, all strands of the San Jacinto fault zone. The Claremont Fault acts as a barrier to flow between Canyon and Upper Pressure Management Zones, while the Casa Loma Fault is a barrier to flow between the Upper Pressure Management Zone and both the Hemet North and Hemet South Management Zones.
The San Jacinto River enters the basin in the southeast part of the Management Area and flows north and west across the Upper Pressure Management Zone. In most years, all river flow is lost to percolation and limited evapotranspiration in the Canyon and Upper Pressure Management Zones. Recharge from the San Jacinto River and its tributaries forms a large portion of total inflow for the Canyon and Upper Pressure Management Zones.
Groundwater pumping for irrigation and domestic purposes is the principal source of groundwater outflow. Major pumping depressions occur in the Hemet South and Upper Pressure Management Zones.
Historically, extraction in excess of recharge has resulted in lowered groundwater levels and altered directions of groundwater flow.
4.6.1 ARTIFICIAL RECHARGE OPERATIONS
In addition to natural inflows and return flows from agricultural and municipal uses, there has been and continues to be artificial recharge operations in the Management Area. These 55 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
operations use imported water, when available, typically at lower winter rates, to artificially recharge groundwater through spreading basins. The annual volume of imported water recharged is presented in Figure 4.7. Recharge operations did not begin until 1990. More recently, the Public Agencies have signed memoranda of understanding in 2004 and 2005 to plan for the recharge at two existing recharge facilities in the San Jacinto riverbed. 0 3000
6000
9000
19841986198819901992199419961998200020022004
Year
Imported Water Recharged
(AFY)
Figure 4.7 Annual Imported Water Recharged
The artificial recharge operations help address the impact of overdraft caused by past groundwater production.
4.6.2 GROUNDWATER LEVELS AND FLOW
Historical groundwater extraction from the Management Area has resulted in a significant drop in groundwater levels. The lowered groundwater levels also changed the direction of flow in parts of the Management Area. Figure 4.8 shows the flow directions in the early 20th Century.
Figure 4.9 shows current flow directions. Notable changes over time include the development of a groundwater divide between the Hemet South and Perris South Management Zones (previously flow was out of the Hemet South Management Zone into the Perris South Management Zone and flow from the Hemet North portion to the Lakeview portion of the Lakeview/Hemet North Management Zone due to lower water levels in the Lakeview portion. (TechLink, 2002a)
56 Hemet/San Jacinto Groundwater Management Area
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!
!
San Jacinto River
Diamond Valley Lake
Claremont Fault
Casa Loma Fault
Park Hill Fault
Bautista Creek Fault
Lake Skinner
Hemet
San Jacinto
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Legend
Faults*
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Early 20th Century Groundwater Flow Direction
Figure 4.8
0 1 0.5
Miles
±
*Source: Riverside County
Generalized Groundwater Flow Direction
based on Techlink, 2002 & EMWD, 2005
!
!
San Jacinto River
Diamond Valley Lake
Claremont Fault
Casa Loma Fault
Park Hill Fault
Bautista Creek Fault
Lake Skinner
Hemet
San Jacinto
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Legend
Faults*
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Current Groundwater Flow Direction
Figure 4.9
0 1 0.5
Miles
±
*Source: Riverside County
Generalized Groundwater Flow Direction
based on Techlink, 2002 & EMWD, 2005
State of the Management Area
Figure 4.10 shows Spring 2004 groundwater levels. The groundwater level contours show pumping depressions in the northeastern part of the Hemet South Management Zone and in the northwestern part of the Upper Pressure Management Zone. These pumping depressions are due to concentrated pumping in those areas in excess of the local recharge capacity.
Historical groundwater levels are affected by both climatic conditions, which impact the amount of recharge, and pumping. Historical conditions in the four Management Zones can be studied in relation to their unique setting by analyzing observed water levels at representative wells with long periods of record. Hydrographs for four selected wells are presented in the following sections. The locations of the wells can be found on Figure 4.11.
4.6.2.1 Canyon Management Zone
The Canyon Management Zone benefits from significant surface water recharge from the San Jacinto River and its tributaries. This additional recharge reduces the impact of the pumping occurring in the Canyon Management Zone. Figure 4.12 shows groundwater levels from 1948 to 2005 for EMWD’s #6 Cienega well. This figure shows the impact of hydrologic variability and pumping in the area. One drought period in the late 1980s resulted in groundwater levels dropping by over 100 feet. Such declines in groundwater levels are likely due to a combination of reduced precipitation, reduced recharge from streamflow, and the effects of pumping. Most of this decline was recovered in the wet period that followed from 1991 to 1993.
Changes are also seen seasonally, with groundwater levels changing by as much as 100 feet from late fall to late spring. These seasonal changes in water levels are also due to a combination of reduced precipitation, reduced recharge from streamflow, and the effects of pumping.
4.6.2.2 Upper Pressure Management Zone
The Upper Pressure Management Zone benefits from surface water recharge from the San Jacinto River and its tributaries and supplies most of the groundwater for the Management Area. However, even with significant recharge from surface water as well as other inflows, wells in the Upper Pressure Management Zone have shown a decline in water levels over time.
Figure 4.13 presents water level elevations for EMWD’s #9 Hewitt and Evans well, showing a consistent decline through the dry period of the 1950s, 1960s, and 1970s with a drop of more than 200 feet over the 30-year period. The hydrologically wet and normal periods during 1978 to 1986 resulted in a recovery of about half the decline from the previous three decades. Since 1986, groundwater levels have dropped approximately 200 feet. The changes seen in the well 59 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
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San Jacinto River
Diamond Valley Lake
Lake Skinner
Hemet
San Jacinto
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1340
1360
1420
1380
1540
1300
1400
1520
1660
1260
1220
1500
1280
1200
1640
1560
1180
1380
1420
1240
1200
1340
1280
1220
1160
1180
1320
1360
1420
1640
1500
1300
1800
1440
1260
1840
1700
1760
1340
1320
1280
1280
1240
Legend
Faults*
Groundwater Level Contours (ft)**
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Spring 2004 Groundwater Elevation
Figure 4.10
0 1 0.5
Miles
±
*Source: Riverside County
**Source: EMWD, 2005
*Groundwater Contours Intervals are not consistent due to steep gradients in mountainous areas and shallow gradients in valley areas and/or limited data. !
!
>
>
>
>
San Jacinto River
Diamond Valley Lake
Lake Skinner
EMWD 22 Sneed
EMWD 06 Cienega
EMWD 21 Old Dairyland
EMWD 09
Hewitt & Evans
Hemet
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> Wells Featured in Hydrographs*
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Location of Representative Well Hydrographs
Figure 4.11
0 1 0.5
Miles
±
*Source: EMWD
Figure 4.12 Groundwater Elevation
Canyon Management Zone, EMWD #6 Cienega
130013501400145015001550160016501700
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
Date
Groundwater Elevation (ft amsl)
Figure 4.13 Groundwater Elevation
Upper Pressure Management Zone, EMWD #9 Hewitt and Evans 115012001250130013501400145015001550
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
Date
Groundwater Elevation (ft amsl)
State of the Management Area
are likely due to a combination of reduced precipitation, reduced recharge from streamflow, and effects of pumping.
4.6.2.3 Hemet North Portion of the Lakeview/Hemet North Management Zone Groundwater levels in Hemet North portion of the Lakeview/Hemet North Management Zone have shown a steady decline followed by recent stabilization. These declines occur even though significantly less water was pumped from the Hemet North portion than from other Management Zones. The Hemet North portion does not receive as much surface water recharge as Upper Pressure and Canyon Management Zones, thus impacts of pumping are more pronounced than they might be in those Management Zones. Figure 4.14 shows groundwater levels at EMWD’s #21 Old Dairyland well. Since the beginning of the record in 1966, groundwater levels have steadily declined, with little variability. After dropping more than 100 feet from the mid-1960s to the mid-1990s, groundwater levels have stabilized at an average of 1,250 feet above mean sea level.
4.6.2.4 Hemet South Management Zone
Groundwater levels in the Hemet South Management Zone have shown a steady decline, although the recent rate of decline has slowed. Figure 4.15 shows groundwater levels at EMWD’s #22 Sneed well since the beginning of the record in 1952. While data is limited for the 1952 to 1990 period, groundwater levels declined through the 1952-1990 period, and the increased data available from 1990 to 2005 shows little variability. Groundwater level declines have slowed but have still dropped approximately 20 feet in the past 10 years.
4.6.3 GROUNDWATER BUDGET
The changes in groundwater levels and flow directions are the result of changes in the balance of inflows and outflows from the Management Area. A groundwater budget can identify potential causes of an imbalance. The groundwater budget presented in Table 4.3 shows average annual values for the components of total inflow and total outflow. The values are based on a water balance spreadsheet tool developed for use by the TC. This Excel-based tool allowed the TC members to investigate the impact of inclusion and exclusion of specific water budget components, such as artificial recharge, imported water, and others, as well as the implications of different data sources, such as the calibrated groundwater model and the database or reported values with underflow estimates. This allowed for a more thorough understanding of the potential impacts of definitions of water budget components on the calculated yield and overdraft. The values presented in Table 4.3, as agreed upon by the TC, are the results of the calibrated groundwater model except for groundwater extraction, which is 64 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Figure 4.14 Groundwater Elevation
Hemet North Management Zone, EMWD #21 Old Dairyland
100010501100115012001250130013501400
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
Date
Groundwater Elevation (ft amsl)
Figure 4.15 Groundwater Elevation
Hemet South Management Zone, EMWD #22 Sneed
110011501200125013001350140014501500
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
Date
Groundwater Elevation (ft amsl)
State of the Management Area
obtained from the data tabulated in Assessment of Historical and Projected Land and Water Use Data (WRIME, 2003a).
Table 4.3 Groundwater Budget for the Management Area
(Average Annual Volume for Water Years 1984-2004*)
Inflow Component Volume
(AFY) Outflow Component Volume (AFY)
Recharge from Rainfall 8,900 Groundwater Production 57,800 San Jacinto River and Bautista
Creek Recharge 9,900 Subsurface Outflow from Hemet South to Perris South 300 Recharge from Public Agency
Sales 2,900 Subsurface Outflow from
Hemet North to Lakeview
1,500
Recharge from Irrigation 9,600
Conjunctive Use Recharge 800
Reclaimed Water Recharge 1,500
Subsurface Inflow from
Mountain Fronts 8,000
Subsurface Inflow from Lower
Pressure to Upper Pressure 1,700
Total 43,300 Total 59,600
* Values for Groundwater Production represent 1984-2004 averages, an update from the 1984-2003 values presented in WRIME, 2003a. All other data is taken from the 1984-1999 modeling results (TechLink, 2002a).
The total average annual inflow is 43,300 AFY and the total average annual outflow is 59,600 AFY, resulting in an average annual deficit of 16,300 AFY for the 20-year hydrologic period of 1984 to 2004. Nearly all (97%) outflow is from groundwater extraction while inflow is primarily natural recharge, representing 66% of inflow and the remainder a direct result of recharge from applied water or other human activities. The 1984-2004 hydrologic period presented in Table 4.3 represents the period during which the most consistent and continuous data for the Management Area is available. It should be noted, however, that this period does not necessarily represent the long-term groundwater basin conditions, and as described in Section 4.9 of this document, long-term overdraft is estimated based on longer periods, as well as other methods and criteria.
4.6.4 LAND SUBSIDENCE
In additional to water quantity and quality concerns, there is the potential for further land subsidence in the Management Area, although not at rates to cause significant damage. 67 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
Widespread land subsidence has been observed in the San Jacinto basin as the area and its groundwater resources have been developed. Three forms of subsidence have been reported by the U.S. Environmental Protection Agency (Boen, et al., 1971): local or regional tectonic adjustments along the faults in the area; groundwater withdrawals and subsequent artesian head decline; and soil collapse or compaction due to causes other than tectonic or artesian head decline. In the graben, tectonic subsidence has averaged 0.2 in/yr (4.5 mm/year) over the past 40,000 years and subsidence due to groundwater withdrawal and aquifer compaction is 1 - 1.2 in/yr (2.5 - 3 cm/yr) (Morton, 1995). Lofgren (1975, 1976) reported in studies that, through the years, the periods of subsidence tend to correspond to the periods of groundwater production; land surface elevation at the well tends to be lower each year; and subsidence has been greater within the graben than on either side.
4.7 LAND USE
Land use in the Management Area has experienced changes over the past half-century. The conversion from agricultural or undeveloped lands to urban uses has an impact on basin hydrogeology as well as on water demand. Figure 4.16 and Table 4.4 show land uses in 1998 for most of the project area.
Table 4.4 Land Use Distribution Based on the 1998 Survey Land Use Canyon Upper
Pressure
Hemet
South
Hemet
North Total
Total Area (acres) 4,400 21,200 25,300 5,600 56,500
% Urban and Suburban 24% 24% 36% 11% 28%
% Irrigated Crops and Recreational 12% 49% 15% 47% 31%
% Non-Irrigated Crops and Native
Vegetation 16% 24% 45% 42% 35%
% Unmapped 48% 3% 4% 0% 7%
Much of the urban uses in the area are recent. This is shown by the significant population growth in the area, as highlighted Figure 4.17, which displays population data from the decennial US Census reports and a 2004 US Census estimate for the incorporated areas of Hemet and San Jacinto.
68 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
!
!
San Jacinto River
Diamond Valley Lake
Hemet
San Jacinto
·|}þ79
·243 |}þ
·|}þ74
·|}þ79
Legend
Land Use*
Urban
Irrigated Agriculture
Native Vegitation
Water
! Cities
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
1998 Land Use
Figure 4.16
0 1 0.5
Miles
±
*Urban includes: Commercial, Residential, Industrial,
Homes/Trailer Parks, Public Infrastructure, and Public Institutions.
Irrigated Agriculture includes: Dairy/Livestock,
Irrigated Cropland, Orchards & Vineyards, and Recreation.
Native Vegetation includes: Non-irrigated Cropland,
Open Space, Other Agriculture/Ranches, and Vacant
Source: EMWD
State of the Management Area
0 10,000
20,000
30,000
40,000
50,000
60,000
70,000
19101920193019401950196019701980199020002004
Year
Population
Hemet San Jacinto
Figure 4.17 Population Growth in Incorporated Hemet and San Jacinto From 1950 to 2004, the population in Hemet increased twenty-fold and the population in San Jacinto increased sixteen-fold. Such urbanization results in changes in both water demand and hydrologic processes. For newly urbanized areas that were previously non-irrigated, water demands obviously increase significantly. Areas that change from irrigated agricultural uses to urban uses do not typically see major changes in the total annual water demand. However, water demand from urban users is typically less elastic than water demand from agricultural users, making drought contingencies more important. The requirements for water quality are also typically more stringent for urban users. From a hydrologic perspective, urbanization results in an increase in the impervious land area, e.g., more pavement and buildings, with the resulting increased runoff and decreased infiltration. Additionally, the water used indoors by urban users is sent to treatment plants, shifting the potential for recharge of this water from the area of use to the treatment plant area.
The urbanization trend is not unique to the Management Area, but has been pervasive throughout the fringes of urbanized Southern California. While the rate of urbanization may change in the future, the trend of urbanization is likely to continue and to play a significant role in land use and water demand. Further discussion of future land use changes may be found in Section 5.
70 Hemet/San Jacinto Groundwater Management Area
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State of the Management Area
4.8 CURRENT WATER SUPPLIES
There are four Public Agencies primarily responsible for water supply in the Management Area:
EMWD, LHMWD, and Cities of Hemet and San Jacinto. In addition, Private Water Producers produce groundwater and purchase water from the Public Agencies, and the Soboba Tribe pumps groundwater for its respective uses. Each entity pumps groundwater, and some entities also utilize a mix of some of the following sources: surface water diversions, surface water and/or groundwater purchases, surface water imports, and recycled water. The water supply conditions in the Management Area and the interrelationships among the various agencies is a primary factor for future water management in the area. Figure 4.18 shows these interrelationships in a diagram form.
Figure 4.19 shows the makeup of the water supply and how this mix has changed from 1985 to 2004 for the Management Area. Groundwater is the predominant source of water supplies for the Management Area. The remaining sources are smaller, but still important, sources of water.
Supplies listed by entity are provided in Appendix F. Note that items such as sales to other agencies are not subtracted in these supply values, resulting in a supply that represents both wholesale and retail supplies. As a result of this definition, supplies will not equal the historical demand. Historical demand for the individual entities is shown in Figures 4.20 – 4.25.
4.8.1 GROUNDWATER
All entities pump groundwater for all or a portion of their water supply. The quantity of groundwater extraction for each Management Zone is shown in Figures 4.26a, 26b, and 4.27. 71 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
NATURAL SYSTEM SURFACE WATER DIVERSION AND GROUNDWATER PRODUCTION SYSTEM Water Balance OutflowsWater Balance Inflows
Figure 4.18 Components of Hemet/San Jacinto Groundwater Balance Irrigation Demand
M&I Demand
Outdoor Use Indoor Use
Wastewater
Treatment Plant
Groundwater
Production
Groundwater
Production
Precipitation
San Jacinto
River and
Bautista Creek
Recharge
Recharge from
Irrigation
Recharge from
Agency Sales
Hemet/San Jacinto Groundwater Basin
Surface Water Imports
Outfall
Recharge from
Rainfall
Out of Basin Flows
San Jacinto River
and Tributary
Streams
SubsurfaceOutflow Subsurface
Inflow
Out of
Basin
Use
Conjunctive
Use
Recharge
Surface Water
Diversions
Recycled Water Use
Reclaimed
Water
Recharge
Recharge
from
Artificial
Recharge
Agency Sales
Ag Use M&I Use
Artifical
Recharge
Recycled Water
Storage
Artifical
Recharge
State of the Management Area
0 10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
19841986198819901992199419961998200020022004
Year
Demand (AFY)
Groundwater Surface Water Recycled Imports
Figure 4.19 Annual Management Area Water Supplies
0 2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
20,000
19841986198819901992199419961998200020022004
Year
Demand (AFY)
Figure 4.20 EMWD Historical Annual Demand
73 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
0 2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
20,000
19841986198819901992199419961998200020022004
Year
Demand (AFY)
insufficient data
Figure 4.21 LHMWD Historical Annual Demand
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
19841986198819901992199419961998200020022004
Year
Demand (AFY)
Figure 4.22 City of Hemet Water Service Area Historical Annual Demand 74 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
19841986198819901992199419961998200020022004
Year
Demand (AFY)
Figure 4.23 City of San Jacinto Water Service Area Historical Annual Demand 0 5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
19841986198819901992199419961998200020022004
Year
Demand (AFY)
Figure 4.24 Private Water Producers Historical Annual Demand 75 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
19841986198819901992199419961998200020022004
Year
Demand (AFY)
Figure 4.25 Soboba Historical Annual Demand
0 10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
19841986198819901992199419961998200020022004
Year
Production (AFY)
Canyon Hemet North Hemet South Upper Pressure
Figure 4.26a Annual Groundwater Production, by Management Zone 76 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
0 10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
19841986198819901992199419961998200020022004
Year
Production (AFY)
EMWD LHMWD Hemet San Jacinto Private Water Producers Soboba Tribe Figure 4.26b Annual Groundwater Production, by Entity
0 5,000
10,000
15,000
20,000
25,000
30,000
EMWD LHMWD Hemet San Jacinto Private
Pumpers
Soboba
Tribe
Entity
Average Production (AFY)
Canyon Hemet North Hemet South Upper Pressure
Figure 4.27 Average Annual Entity Groundwater Production, by Management Zone, 1984-2004
Since 1984, each entity except for the City of San Jacinto has pumped groundwater from multiple Management Zones. San Jacinto’s pumping during that time period has always been from the Upper Pressure Management Zones. The percentage of the water supply from groundwater for each remaining entity, compared to other components of the water supply, is shown in Figures 4.28a-e as a pie chart breaking down the entity’s 2004 groundwater supply by 77 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
Management Zone. Additionally, Figure 4.29a-e presents stacked area charts showing the historical annual percentage of groundwater supply from each Management Zone. 13%
70%
17% Canyon
Hemet North
Hemet South
Upper Pressure
Figure 4.28a EMWD 2004 Groundwater
Production, Percentage by Supply Source
17%
83%
Canyon
Hemet North
Hemet South
Upper Pressure
Figure 4.28c City of Hemet Water Service Area
2004 Groundwater Production, Percentage by
Supply Source
61%
33%
6%
Canyon
Hemet North
Hemet South
Upper Pressure
Figure 4.28b LHMWD 2004 Groundwater
Production, Percentage by Supply Source
100%
Canyon
Hemet North
Hemet South
Upper Pressure
Figure 4.28d Soboba 2004 Groundwater
Production, Percentage by Supply Source
3%
61% 20%
16% Canyon
Hemet North
Hemet South
Upper Pressure
Figure 4.28e Private Water Producers 2004
Groundwater Production, Percentage by Supply
Source
78 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
0%
20%
40%
60%
80%
100%
19841985
198619871988
1989199019911992
199319941995
1996
19971998
199920002001
2002
20032004
Canyon Hemet North Hemet South Upper Pressure
Figure 4.29a EMWD Historical Groundwater Production, Percentage by Supply Source
0%
20%
40%
60%
80%
100%
19841985
19861987
1988
1989
19901991
1992
19931994
1995
19961997
199819992000
20012002
20032004
Canyon Hemet North Hemet South Upper Pressure
Figure 4.29b LHMWD Historical Groundwater Production, Percentage by Supply Source
0%
20%
40%
60%
80%
100%
19841985
1986
1987
198819891990
1991
1992
199319941995
1996
1997
1998
19992000
20012002
20032004
Canyon Hemet North Hemet South Upper Pressure
Figure 4.29c City of Hemet Water Service Area Historical Groundwater Production, Percentage by Supply Source
79 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
0%
20%
40%
60%
80%
100%
19841985
19861987
198819891990
1991
1992
19931994
1995
19961997
1998
19992000
20012002
2003
2004
Canyon Hemet North Hemet South Upper Pressure
Figure 4.29d Soboba Historical Groundwater Production, Percentage by Supply Source
0%
20%
40%
60%
80%
100%
19841985
19861987
198819891990
1991
1992
199319941995
19961997
1998
19992000
20012002
20032004
Canyon Hemet North Hemet South Upper Pressure
Figure 4.29e Private Water Producers Historical Groundwater Production, Percentage by Supply Source
The pie charts show that in 2004 the Upper Pressure Management Zone provided the majority of groundwater for four of the six entities. The Hemet South Management Zone provided the majority of water to the City of Hemet Water Services Area and The Canyon Management Zone provided all groundwater for the Soboba Tribe.
The only significant trend seen in the 1984 - 2004 historical annual charts is LHMWD’s shift in groundwater sources from majority Canyon Management Zone water in the mid-1980s to mostly Upper Pressure Management Zone water recently. These charts also emphasis the importance of the Upper Pressure Management Zone, as it was a component of the groundwater supply for all entities over the 1984 – 2004 time period.
4.8.2 IMPORTED WATER
EMWD is a member agency of the MWD, and, as such, is able to import water from Northern California via the State Water Project and from the Colorado River Aqueduct. Imported water is used for supply as well as for groundwater recharge; this section only discusses imported 80 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
water for supply, imported water for recharge is discussed in Section 4.6.1. District-wide, imported water comprises 80% of EMWD’s total potable water supply. However, imported water is a small portion of EMWD’s water supply in the Management Area due to the availability of high quality groundwater, which is less common in the rest of the EMWD service area. Over the 1984-2004 period, imported water represented 13% of EMWD’s supply and 2% of the total Management Area supply (WRIME, 2003a). In 2004, imported water represented 41% of EMWD’s supply and 9% of the total supply for the Management Area (EMWD, 2005a,b).
The usage of imported water for direct use has been variable over the past decades, as shown in Figure 4.30. The volume of water imported was reduced in 1991 as the importation of unfiltered Colorado River water to the Management Area was curtailed to meet the requirements of the Surface Water Treatment Rule, part of the Safe Drinking Water Act.
Imported water usage in recent years has increased, which in turn reduced the stress on groundwater resources in the Management Area.
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
19841986198819901992199419961998200020022004
Year
Imported Water (AFY)
Figure 4.30 Annual Imported Water Supply
4.8.3 RECYCLED WATER
Recycled water is treated at EMWD’s San Jacinto Valley Regional Water Reclamation Facility and is currently used primarily for irrigation in the public municipal areas, industrial uses, and agricultural irrigation purposes in the Management Area and for habitat creation at the California Fish and Game San Jacinto Wildlife Area outside the Management Area. Recycled water is a highly reliable source of supply and will increase in availability as the population of the Management Area increases. Most of the recycled water is sold by EMWD to private land owners for agricultural irrigation. Recycled water usage in the Management Area has been fairly stable over the past decades, with approximately 5,000 AF supplied in 2004. Annual amounts of recycled water use are presented in Figure 4.31. 81 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
19841986198819901992199419961998200020022004
Year
Recycled Water (AFY)
Figure 4.31 Annual Recycled Water Supply
4.8.4 SURFACE WATER
LHMWD has pre-1914 rights for the diversion and storage of surface water from the San Jacinto River and its tributaries. These rights date back to the late 1800s, and the diversion amounts are filed each year with the Division of Water Rights, State Water Resources Control Board on Annual Notices of Groundwater Extraction or Diversion, numbers G330016, G330017, and G330018.
When available, LHMWD diverts surface water for direct use. It should be noted that the San Jacinto River is an ephemeral river. The river may not flow every year and, therefore, there may be occasional years where diversion is not possible. Annual surface water diversions for 1985-2004 are shown in Figure 4.32. Details of the surface water rights are discussed in Section 7.1.
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
19851986198719881989199019911992199319941995199619971998199920002001200220032004 Year
Surface Water (AFY)
Figure 4.32 Annual Surface Water Supply
82 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
EMWD’s surface water diversions are not utilized for direct use and are therefore not considered part of the water supply. More information on EMWD’s surface water diversions is included in Section 7, Surface Water Rights.
4.8.5 PURCHASES FROM EMWD
LHMWD, City of Hemet, and City of San Jacinto purchase water from EMWD to supplement their water supplies. The annual volume of water sold to the other agencies by EMWD is shown in Figure 4.33. In addition to these sales, EMWD sells recycled water to private land owners for agricultural irrigation.
0 3,000
6,000
9,000
19841986198819901992199419961998200020022004
Year
EMWD Sales to Other Agencies
(AFY)
Figure 4.33 Annual Sales by EMWD to Other Agencies within Management Area
4.9 ESTIMATES OF SAFE YIELD AND OVERDRAFT
4.9.1 SAFE YIELD
The Safe Yield of the Management Area is defined in the Stipulated Judgment as the long term, average quantity of water supply in the Management Area that can be pumped without causing undesirable results, including the gradual reduction of natural groundwater in storage over long-term hydrologic cycles.
The following clarifying notes are presented to better define the Safe Yield definition:
Period of Record: Safe Yield is a function of annual variability of the hydrology, but should reflect long-term average conditions, including wet and dry replenishment conditions. Identification of “long term, average” is important, but difficult to determine, as precipitation is highly variable from year to year and subject to long-term climatic changes. As hydrologic data will continue to be 83 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
collected and a greater understanding of the hydrology will be gained, the period of record for determining the Safe Yield will be subject to change over time. Water Supply Components: The following components of water supply are considered in the definition of Safe Yield:
a. Natural recharge from infiltration of precipitation, b. Recharge from infiltration of streamflow and other surface water runoff, c. Recharge from infiltration of irrigation applied water on agricultural lands,
d. Recharge from infiltration of outdoor irrigation in the urbanized areas, e. Artificial recharge, such as replenishment programs, historically operated, using imported, recycled, and surface water diversions, f. Subsurface groundwater inflows, such as from the Lower Pressure Management Zone and the boundaries of the basin, and
g. Subsurface groundwater outflows, such as to the Lakeview portion of the Lakeview/Hemet North Management Zone.
Study Area: Safe Yield is calculated for the Management Area as one unit, and not by the smaller units of Management Zones.
Undesirable Effects: The definition of Safe Yield emphasizes protection of groundwater in storage. It is assumed that potential undesirable effects on water quality are indirectly addressed, and therefore are not included in the analysis.
The Safe Yield of the Management Area has been estimated in a number of studies in the past.
A summary of methods, hydrologic periods, and results from each study is presented in Table 4.5.
Two major methodologies have traditionally been used to estimate the Safe Yield: (1) Water Balance methodology, and (2) Change in storage methodology. These methods are briefly described below.
84 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
Table 4.5 Published Estimates of Safe Yield for the Management Area Yield Study Method Time
Period
Safe Yield
(AFY)
Pumping
(AFY)
Overdraft
(AFY)
Fritz and Rosell*, 1947 Water Balance
(Conventional)
1920-1945 27,400
(35,100 w/o
trees/brush)
32,400 4,800
Schwartz*, 1967 Water Balance
(Conventional)
1923-1960 26,100 n/a 12,100
EMWD White Paper,
2000
Water Level Recovery
Analysis
Variable 50,000 60,600 10,600
GIS Recharge Estimates Change in Storage (GIS) 1998-2003 39,700 n/a n/a WRIME, 2003d Water Balance
(Conventional)
1984-2001 44,700 59,000 14,300
Based on TechLink,
2002a
Water Balance (Modelbased) 1984-1999 41,300 58,000 16,700 * Fritz and Rosell (1947) and Schwartz (1967) both used a larger geographic area that roughly included what is today called the San Jacinto-Lower Pressure Management Zone. This additional area is the area northwest of Bridge Street to Redlands Boulevard in Moreno Valley.
4.9.1.1 Method 1 - Water Balance Method
The water balance method utilizes inflows and outflows from the basin to estimate change in storage and the Safe Yield of the basin. The amount of pumping that can be sustained with little or no long-term change in storage is the Safe Yield of the basin. The Safe Yield estimate may be calculated by
Safe Yield = Change in Groundwater Storage + Groundwater Production, where Change in Groundwater Storage is Inflows less Outflows. The estimate must be over a long-term base period which reflects a number of wet, normal, and dry periods. Groundwater production values are based on historical data as reported by the Public Agencies and estimated for the Private Water Producers. The TC has reviewed and agreed to the data for use in the Water Balance Method. The following inflow and outflow components are used to calculate Change in Groundwater Storage for the Management Area:
Inflows
Recharge from Retail Water Sales,
Recharge from Irrigation Return Flow,
Recharge from Precipitation,
85 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
Grant Avenue Ponds Diversion Recharge,
Reclaimed Ponds Recharge,
Recharge from Recycled Water Sales,
Subsurface Inflow from Other Management Zones,
Bautista Creek Recharge,
San Jacinto River Recharge, and
Boundary Inflow.
Outflows
Subsurface Outflow to Other Management Zones,
Boundary Outflow, and
Groundwater Production.
4.9.1.2 Method 2 - Change in Storage Methodology
This method uses a GIS database to develop surfaces of groundwater elevations based on observed groundwater levels at multiple control points (i.e., wells) throughout the Management Area for two different time periods. The product of change in volume between the two surfaces at two different times and the specific yield of the aquifer determines the change in storage between those two time points. The Safe Yield is then calculated as the sum of the calculated change in storage and the groundwater production during the same time period. Variations of this method are used based on the spatial distribution, including vertical distribution, of the specific yield in the aquifer system.
4.9.1.3 Summary of Previous Yield Estimates
Calculation of Safe Yield is a function of the hydrologic period used in the analysis. Figure 4.34 presents the long-term hydrologic conditions as precipitation at San Jacinto gaging station (RCFC&WCD Site #186), along with estimates of the Safe Yield. As indicated in the figure, the Safe Yield estimates range from 26,400 to 44,700 AFY. Since the two estimates made by Fritz & Rosell (1947) and Schwartz (1967) are based on much older data sets and short-term hydrologic records, and the geographic area may not be consistent with some of the more recent estimates, the TC decided in its August 25, 2005 meeting not to use these estimates. Instead, the TC concluded that the Safe Yield of the Management Area ranges from approximately 40,000 to 45,000 AFY based on the most recent analyses.
The TC also concluded that the following guidelines for estimation of Safe Yield of the Management Area be considered by the Watermaster when calculating Safe Yield in the future:
86 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Figure 4.34 Safe Yield Estimates
-80-60-40-20
0 2040
1910
1915
1920
1925
1930
1935
1940
1945
1950
1955
1960
1965
1970
1975
1980
1985
1990
1995
2000
Year
San Jacinto Precipitation (Inches)
2000025000300003500040000450005000055000600006500070000 Yield (AFY)
Fritz and Rossel Water Balance- clear river channel35,100 AFYFritz and Rossel Water Balance 27,400 AFY Schwartz Water Balance 26,100 AFY
2003 OY Water Balance - 41,300 AFY
2003 OY Water Balance
69,000 AFY 2003 OY Water Balance
63,600 AFY
GIS
39,700 AFY
GW Model 41,400 AFY
2003 OY Water Balance29,300 AFY
2003 OY Water Balance 43,700 AFY
2003 OY Water Balance - 26,500 AFY
EMWD, 2000 White Paper 50,000 AFY
Cumulative Departure from Mean Annual Precipitation
Annual Precipitation Mean Annual Precipitation
Safe Yield = 40,000 - 45,000 AFY
* OY = Operational Yield Report
State of the Management Area
Review and modify Safe Yield, if necessary, upon the recommendation of the TC or as the Watermaster may determine.
Use latest available data with consideration for proper spatial, temporal, and vertical characteristics of the aquifer system.
Consider a long period of record that includes above average, below average, and normal conditions.
Consider latest methodologies that can provide more flexibility based on the available data and information, as necessary.
Consider using the San Jacinto Watershed Groundwater Model, with appropriate updates and calibration, for re-estimation of groundwater conditions, as needed.
4.9.2 OVERDRAFT
Overdraft is defined in the Stipulated Judgment as the condition whereby groundwater production in the Management Area exceeds the Safe Yield, creating undesirable conditions in the basin. The amount of overdraft is calculated as the difference between long-term average annual groundwater production in the Management Area and Safe Yield. Figure 4.35 shows the estimated annual groundwater production in the Management Area, along with the range of Safe Yield. Based on this figure, the overdraft in the Management Area is estimated to be 10,000 to 15,000 AFY. For planning purposes and to evaluate options to reduce the overdraft, this Plan assumes that the overdraft is at least 10,000 AFY.
4.10 WATER QUALITY CONDITIONS
This section presents a summary of the groundwater quality conditions in the Management Area. This description will assist in establishing a baseline condition for future water management efforts to maintain or improve groundwater quality in the Management Area. The TC has decided that the water quality conditions in the Management Area would be evaluated based on TDS and nitrate levels. This is consistent with the TIN/TDS studies (Wildermuth, 2000) and the emphasis on TDS and nitrate in the Basin Plan as amended (RWQCB, 2004).
The Management Area lies within the jurisdiction of the RWQCB, Santa Ana Region 8. The RWQCB implements state and federal laws through adoption of Water Quality Control Plans or Basin Plans (RWQCB, 1995). The Basin Plan establishes both the legal beneficial use designations and sets the standards to protect these uses. The Basin Plan was recently amended (RWQCB, 2004) to incorporate an updated TDS and Nitrogen Management Plan for the Santa Ana Region, including revised groundwater Management Zones (combining Hemet North and Lakeview into one Management Zone; Hemet North remains treated separately from Lakeview 88 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
30,000
35,00040,00045,00050,00055,00060,00065,00070,00075,000
1958
1968
1978
1988
1998
Year
Annual Pumping and Safe Yield (AFY)
Annual Groundwater Production (AFY)
Figure 4.35 Groundwater Production and Range of Safe Yield Estimates Safe Yield: 40,000 – 45,000 AFY
Average Production: 54,800 AFY
State of the Management Area
in this Plan), TDS and nitrate quality objectives for groundwater, TDS and Nitrogen waste load allocations, and stream reach designations.
Within the Santa Ana Watershed, which includes the Management Area, a statistical method has been developed to use nitrate (as N) and TDS to evaluate the status of water quality; to compare sub-basin concentrations; and to trigger management actions (RWQCB, 2004; Wildermuth, 2000, 2005). Point statistics were used to show (i) historical ambient water quality conditions as represented by the 1954-1973 time period, (ii) 1997 Current ambient water quality conditions as represented by the 1978-1997 time period, and (iii) 2003 Current ambient water quality conditions as represented by the 1984-2003 time period. A summary of the data is shown in Table 4.6, revealing nitrate (as N) levels below the MCL of 10 mg/L for all cases. TDS exceeds the recommended secondary MCL of 500 mg/L in Hemet South (current and historical) and Hemet North (current and historical), and TDS exceeds the maximum secondary MCL of 1000 mg/L in the 1997 current levels in Hemet South.
Table 4.6 Historical (1954-1973), 1997 Current (1978-1997), and 2003 Current (1984- 2003) Ambient Nitrate as N and TDS Concentrations (mg/L) Nitrate as N 1 TDS2
Subbasin Basin Plan
Objective3 Historical
1997
Current
2003
Current
Basin Plan
Objective4 Historical
1997
Current
2003
Current
Canyon 2.5 2.5 1.6 2.1 230 234 220 420
Upper
Pressure
1.4 1.4 1.9 1.7 320 321 370 370
Hemet
South
4.1 4.1 5.2 5.4 730 732 1030 850
Hemet
North
1.8 1.8 2.7 3.4 520 519 830 840
Source: Wildermuth, 2005. 2003 update 1984-2003)
1 Table 3-2
2 Table 3-1
3 Basin Plan Amendment, 2004 (Table 5-4)
4 Basin Plan Amendment, 2004 (Table 5-3)
The point statistics and water quality objectives were used by the RWQCB to develop estimates of assimilative capacity. Areas with assimilative capacity are able to accept waters with higher concentrations of a constituent than the concentration in the receiving waters because natural processes such as recharge and dilution will allow for the water quality objectives to continue to be met. The most recent computations indicate that Hemet South, Hemet North, Canyon, and Upper Pressure Management Zones do not currently have assimilative capacity for TDS. For nitrate, the Hemet South, Hemet North, and Upper Pressure Management Zones do not have 90 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
State of the Management Area
assimilative capacity remaining, and the Canyon area has only a very small amount of nitrate that it can assimilate (0.4 mg/l nitrate as N; Wildermuth, 2005).
Table 4.7 shows the changes seen over the 30-year time period between the historical and 2003 Current time periods. The Canyon Management Zone shows a decrease in nitrate as N concentrations while all other nitrate (as N) and TDS concentrations for all other Management Zones show increases in concentrations of between 0.3 and 1.6 mg/L nitrate (as N) and 49 to 321 mg/L TDS. It should be noted that changes seen between these time periods are a combination of true changes in ambient water quality and artificial changes due to limitations in monitoring data and the estimation technique (Wildermuth, 2005). In the future, as current monitoring programs assemble more data, a long-term record of analytical data at specific wells will be available to better show changes over time at specific locations.
Table 4.7 Change in Ambient Concentration (mg/L) of Nitrate as N and TDS, Between Historical (1954-1973) and 2003 Current (1984-2003) Time Periods Sub-basin
Change in
Nitrate as N
(mg/L)
Change in TDS
(mg/L)
Canyon -0.4 186
Upper Pressure 0.3 49
Hemet South 1.3 118
Hemet North 1.6 321
The most recent data from public and private wells, as complied by EMWD, were used to plot the 2004 nitrate (as N) and TDS conditions as shown in Figures 4.36 and 4.37. While these values are taken from wells screened at different depths, the plots show the general variability in concentrations across the Management Area.
91 Hemet/San Jacinto Groundwater Management Area
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Nitrate as N (mg/L)*
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! 3 - 5
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! Over 30
! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
2004 Nitrate as N Concentrations in Groundwater (mg/L)
Figure 4.36
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TDS (mg/L)*
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! Cities
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
2004 TDS Concentrations in Groundwater (mg/L)
Figure 4.37
0 1 0.5
Miles
±
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State of the Management Area
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94 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
SECTION 5 PROJECTED WATER DEMANDS
AND FUTURE PLAN PHASES
5.1 PROJECTED LAND USE CONDITIONS
This Section presents a brief description of the projected land use conditions in the Management Area. Figure 5.1 shows the general land use categories at build-out.
Area UWMPs echo the projected urban growth indicated in the build-out land use:
EMWD UWMP – EMWD service area population, including areas outside the Management Area, projected to increase from 494,000 in 2005 to 830,000 in 2025. (EMWD, 2005a)
LHMWD UWMP – LHMWD service area population projected to increase from 39,100 in 2005 to 49,500 in 2025. (LHMWD, 2005)
Hemet UWMP:
City of Hemet population projected to increase from 78,600 in 2005 to 154,000 in 2025; and
City of Hemet water system service area population projected to increase from 20,200 in 2005 to 22,300 in 2025. (Hemet, 2006)
San Jacinto UWMP:
City of San Jacinto population projected to increase from 34,100 in 2005 to 63,600 in 2025; and
City of San Jacinto water system service area population projected to increase from 13,200 in 2005 to 24,000 in 2025. (San Jacinto, 2005) The total land use acreage for each category is estimated and presented in Table 5.1.
Based on Tables 5.1 and 4.3, the urban area is projected to increase from 28% in the 1998 survey to 65% at build out. This increase is due to a combination of conversion of agricultural land and undeveloped land to urban uses. These future conversions have significant implications on the total projected water demand in the Management Area, as well as impacts on the precipitation, runoff, and recharge conditions. This concept is further discussed in the following sections. 95 Hemet/San Jacinto Groundwater Management Area
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Land Use*
Urban
Irrigated Agriculture
Native Vegitation
Water
! Cities
Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
2025 Projected Ultimate Land Use
Figure 5.1
0 1 0.5
Miles
±
*Urban includes: Commercial, Residential, Industrial,
Homes/Trailer Parks, Public Infrastructure, and Public Institutions.
Irrigated Agriculture includes: Dairy/Livestock,
Irrigated Cropland, Orchards & Vineyards, and Recreation.
Native Vegetation includes: Non-irrigated Cropland,
Open Space, Other Agriculture/Ranches, and Vacant
Source: EMWD
Projected Water Demands and Future Plan Phases
Table 5.1 Generalized Projected Acreage in the Management Area Land Use Total Acreage Percent
Urban 37,100 65%
Irrigated Cropland 8,100 14%
Non-Irrigated Cropland 4,500 8%
Water 3,600 6%
Unmapped* 4,000 7%
Total 57,300 100%
*Unmapped areas are outside EMWD’s service area and were not included in the EMWD ultimate land use dataset.
Source: EMWD ultimate land use (1998), based on city general plans
5.2 PROJECTED WATER DEMANDS
Projected water demands are based on information contained in 2005 UWMP, the Hemet/San Jacinto Water Management Area 2004 Annual Report (EMWD, 2005b), and Basin Assessment Report Technical Memorandum No. 1 (WRIME, 2003a). The projected water demands of each of the stakeholders and of the Management Area as a whole are described below.
5.2.1 EMWD
Projected retail water demand for the portion of EMWD’s service area within the Management Area is based on the Hemet/San Jacinto Water Management Area 2004 Annual Report. Projected total demand is shown together with recent historical demand in Figure 5.2. Estimates of projected demand are also presented in the EMWD’s 2005 UWMP, but these values are for the entire EMWD service area; the UWMP system-wide projections show a similar rate of increase in water demand of approximately 50% from 2005 to 2020. 97 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
0 5,000
10,000
15,000
20,000
25,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure 5.2 EMWD Historical and Projected Demand
5.2.2 LHMWD
Projected water demand is based on Lake Hemet Municipal Water District 2005 Urban Water Management Plan (LHMWD, 2005). Projected total demand is shown together with recent historical demand on Figure 5.3.
0 5,000
10,000
15,000
20,000
25,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure 5.3 LHMWD Historical and Projected Demand
98 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
5.2.3 CITY OF HEMET WATER SERVICE AREA
Projected water demand in the City of Hemet’s water service area is based on City of Hemet 2005 Urban Water Management Plan (Hemet, 2006). Projected demand is shown together with recent historical demand on Figure 5.4.
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure 5.4 City of Hemet Water Service Area Historical and Projected Demand
5.2.4 CITY OF SAN JACINTO
Projected water demand in the City of San Jacinto’s water service area is based on City of San Jacinto 2005 Urban Water Management Plan (San Jacinto, 2005). Projected demand is shown together with recent historical demand on Figure 5.5.
99 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure 5.5 City of San Jacinto Water Service Area Historical and Projected Demand
5.2.5 SOBOBA TRIBE
Projected water demand for the Soboba Tribe is taken from the Settlement Agreement, assuming that the Settlement Agreement is implemented in 2008. Projected total demand is shown together with recent historical demand on Figure 5.6. 0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure 5.6 Soboba Tribe Historical and Projected Demand 100 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
5.2.6 PRIVATE WATER PRODUCERS
Projected water demand for the Private Water Producers is a refinement of estimates presented in the Operational Yield Study (WRIME, 2003d) based on updated information on current and future development and their impact on water demand. Figure 5.7 shows the assumed future agricultural water use by local producers together with recent historical demand. 0 5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure 5.7 Private Water Producers Historical and Projected Demand
5.2.7 MANAGEMENT AREA
Projected and historical water demand for the Management Area as a whole presented in Figure 5.8 as the sum of the demand for the individual entities presented in the previous subsections.
101 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
50,000
55,000
60,000
65,000
70,000
75,000
80,000
1984198619881990199219941996199820002002200420062008201020122014201620182020 Year
Demand (AFY)
Historical Data Projected Data
Figure 5.8 Management Area Historical and Projected Demand
5.3 FUTURE PLAN PHASES
The Integrated Recharge and Recovery Project is considered to be the core of the Physical Solution. The project is designed and implemented in two Phases. Phase I is described in Section 3 of this Plan. While Phase II facilities are described at the conceptual level, and the EIR is certified, there are additional projects that have been considered by the TC and will need to be evaluated for possible design and implementation. Following is a discussion of Phase II of the IRRP, along with other potential projects.
5.3.1 SAN JACINTO RIVER INTEGRATED RECHARGE AND RECOVERY PROJECT, PHASE II Phase II of the project consists of construction of the remaining portions of the San Jacinto Integrated Recharge and Recovery Project. The information presented here is based on previously published documents adjusted based on the latest knowledge at the time of publication from ongoing negotiations with regulators. Phase II will provide up to 110 cfs of recharge water capacity and will cost approximately $50 million*. A schematic of Phase II is shown in Figure 5.9. Major activities during Phase II are:
1. Construction of Recharge Basins - This activity includes construction of nine additional recharge ponds within the San Jacinto River bed in three clusters of
*
Number has been updated since the publication of the IRRP Feasibility Report. 102 Hemet/San Jacinto Groundwater Management Area
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Warren Pump Station
Commonwealth Pump Station
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SAN JACINTO
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Pump Station
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Existing Pipeline
Phase I Well Field
Phase II Well Field
Hemet / San Jacinto
Water Management
Plan
Schematic of Integrated
Recharge Recovery
Program - Phases I and II
Figure 5.9
Source: EMWD
Projected Water Demands and Future Plan Phases
three basins each, covering approximately 35 acres. Combined Phases I and II will have 15 basins covering approximately 70 acres*.
2. Construction of Pipelines - This includes design and construction of a 7.7 mile water supply pipeline from the EM-14 turnout to the proposed recharge basins.
Included is increasing the capacity of the EM-14 turnout structure from 40 cfs to 110 cfs; replacing 200 feet of 48-inch-diamater pipeline with 63-inch-diamater pipeline; constructing 15,800 feet of new 54-inch-diamater pipeline paralleling the existing 39-inch-diamater pipeline; and constructing 24,800 feet of new 57-inch-diameter pipeline paralleling the existing 33-inch-diamater pipeline.
3. Pump Station Upgrades – Upgraded or new pump stations would be built to increase capacity at the Warren Road and Commonwealth pump stations.
4. Drilling of Extraction Wells - This includes construction and testing of up to five additional extraction wells designed and operated identically to those constructed in Phase I. The construction of these new wells will result in a total of up to eight Phase I and II extraction wells.
5. Design and Construction of Monitoring Wells – Up to three additional monitoring wells will be constructed, bringing the total number of Phase I and II monitoring wells to up to six wells.
Only Phase I has been designed in detail and funding sources are being secured.
5.3.2 POTENTIAL CONJUNCTIVE USE PROJECTS
Conjunctive use is the coordinated operation of surface water storage and use, groundwater storage and use, and conveyance facilities to meet water management needs. This recognizes that there is a hydrologic connection between the surface water resource and the groundwater resource (DWR, 2006). In the Management Area, conjunctive use helps utilize available subsurface storage along with seasonally available water (imports and local surface water) or recycled water. Methods currently being considered include direct recharge and in-lieu recharge.
As part of the basin planning process, the TC identified and selected seven potential direct recharge sites and two potential in-lieu recharge projects for further evaluation and prioritization out of a pool of 15 direct recharge sites and two in-lieu projects initially considered. Further information is provided in Hemet/San Jacinto Basin Assessment – Basin Assessment Report/Integrated Water Management Plan, Technical Memorandum No. 2, Analysis of Impacts of Conjunctive Use Projects (WRIME, 2003c).
The recharge sites were selected based on screening criteria that included:
*
Number has been updated since the publication of the IRRP Feasibility Report. 104 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
General site characteristics (size, recharge needs, ownership, etc.), Hydrogeologic suitability,
Sub-basin interaction,
Engineering suitability,
Land use suitability, and
Environmental impacts.
The seven potential direct-recharge sites and two in-lieu projects are shown on Figure 5.10. In general, the direct recharge sites would utilize imported water, surface water, or recycled water to recharge the groundwater through surface spreading; the in-lieu projects (Upper Pressure InLieu Project and Hemet-Simpson CU Area) were designed to reduce the amount of groundwater production by delivering imported water, from either the Colorado River or the State Water Project, to be used in conjunction and coordination with local groundwater.
A preliminary description of the recharge sites is presented based on information from City of Hemet, City of San Jacinto, LHMWD, and EMWD, along with a brief review of available reports. Table 5.2 summarizes the findings for the nine potential projects. All findings are tentative planning-level data and should not be used in any intensive analysis without further research.
The identification of the potential sites allows for the concentration of future work on these sites. The future work includes:
Evaluation of the general site conditions;
Evaluation of water supply availability and reliability; Preparation of an environmental checklist; and
Evaluation of the effectiveness of the projects in meeting the goals and objectives of the Management Area.
A more detailed description of each site is provided below.
5.3.3 DIRECT RECHARGE PROJECTS
Direct recharge projects involve utilizing available imported, surface, or recycled water in a constructed basin for percolation to groundwater. Successful projects require a site with high permeability to allow for water to quickly percolate to groundwater; compatible nearby land uses; an available and accessible water supply; and the ability to either recapture the water or allow the water to raise groundwater levels. The Plan supports the use of direct recharge of water of suitable quality.
105 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
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Diamond Valley Lake
Salt Creekbetween
Lyon Avenue
and State Street
Little Valley
Bautista Flood
Control Ponds
Fairview
Cienega
Bautista Creek
along Florida
Avenue
Buena Vista
Flood Control
Basin
Hemet Simpson
Conjunctive
Use Project
Recycled Water
In-Lieu Project
Lake Skinner
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Preferred Conjunctive Use Locations
! Cities
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Major Roads
Management Area
October 2007
Hemet / San Jacinto Water Management Plan
Location of Nine Preferred Projects
Figure 5.10
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Table 5.2 Summary of Selected Conjunctive Use Site Conditions Site Project
Type Water Source
Annual
Water
Availability
Soils
Infiltration
Rate
Approximate
Depth to
Water
(ft)
Potential
Constraints
Buena Vista
Flood Control
Basin
Recharge Runoff, recycled,
or imported 600 AF n/a 200 – 250 Groundwater quality
Cienega Recharge River diversion n/a High 210 - 240 Kangaroo Rat, water rights
Fairview Recharge River diversion n/a High 210 - 240 Kangaroo Rat, water rights
Bautista Creek
along Florida
Avenue
Recharge
Irrigation water,
Bautista Creek,
imported
n/a Moderate n/a n/a
Salt Creek
between Lyon
Avenue and State
Street
Recharge Salt Creek
diversion/runoff 1,000 AF Moderate 200 - 250 n/a
Little Valley Recharge Runoff, LHMWD
flume, imported n/a High and
variable 85
Potential
archeological
sites, shallow
bedrock
Bautista Flood
Control Ponds Recharge Surface runoff/ river diversion n/a n/a 180 - 210 No proponent Upper Pressure
In-lieu Project In-lieu Imported (Colorado River) n/a n/a Must gain
agreements
between many
parties
Hemet-Simpson
Conjunctive Use
Project
In-lieu
Imported
(Colorado River
and State Water
Project)
n/a n/a
Must gain
agreements
between many
parties
5.3.3.1 Buena Vista Flood Control Basin
The existing Buena Vista flood control basin has been identified as a potential recharge project site. Buena Vista basin, located at the end of Buena Vista Street north of Esplanade Avenue, is located in the Upper Pressure Management Zone and is owned and operated by RCFC&WCD. 107 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
The site would initially use storm water for recharge purposes. Recharge water would be conveyed to the site from the 2,700-acre drainage area by existing drainage facilities that are owned by RCFC&WCD. It is estimated that approximately 600 AF of water could be delivered to the basin via runoff, with a first flush volume of approximately 20 AF. Surface water quality is good, with some elevated levels of oil and grease, suspended residues, and iron, based on sampling on March 6, 1992 (Singh, 1992). The basin can be enlarged through excavation to provide an additional 36 AF of storage volume, approximately equal to the average storm event runoff.
There is an existing EMWD raw water pipeline that runs nearby along Oakwood Street. This pipeline could potentially be used to supply the project with recycled or imported water (if supplies were to be available) in the future, although it would require the construction of an approximately 4,000-foot pipeline to connect to the basin.
The following items should be considered before moving forward with this project:
Availability of the site for use and coordination with flood control needs; Surface water quality;
Water infiltration potential;
Deep percolation potential;
Availability of imported water to augment surface runoff; Subsurface conditions; and
The clogging potential of surface soils with local runoff.
5.3.3.2 Cienega and Fairview
The Cienega and Fairview sites are adjacent, thus conditions are essentially the same and described together. Preference between the two sites would be based on political, engineering, environmental, and operational factors.
The Cienega and Fairview sites are located in the Canyon Management Zone. Fairview was first used in the early 1990s by LHMWD. LHMWD cut basins near the riverbed and placed a diversion dam in the river. Water was diverted into the basins during the rainy season, typically the 1st quarter of the year. Future use of Fairview, potentially by LHMWD and/or EMWD, would likely involve an expansion of the basin area. Water would be supplied from the river during periods of increased flow, typically January through March. Imported water could also be used if water becomes available and the infrastructure could be built. Infiltration rates are considered high based on monitoring well responses during LHMWD’s use, a study by EMWD at the Cienega blowoff pond, and the prevalence of coarse-sand riverbed deposits. 108 Hemet/San Jacinto Groundwater Management Area
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Projected Water Demands and Future Plan Phases
Potential problems for development of the project include San Bernardino Kangaroo Rat habitat, water rights, and limited available underground storage.
5.3.3.3 Bautista Creek along Florida Avenue
Bautista along Florida is located along the boundary between Upper Pressure and Canyon Management Zones. There is an existing recharge site located along the west side of Bautista Creek. The creek was placed in a concrete channel in the 1970s and 1980s, reducing recharge to the aquifer system. The current recharge facility was installed in the 1960s and consists of 3 ponds located along the creek. The three ponds cover approximately 15–20 acres. Future use of the site could include increasing the pond area through expansion to the north and increasing the supply of water to the ponds. Water for the existing project is provided by a turnout that captures agricultural runoff of acceptable quality from Bautista Creek. In general, creek water is not diverted into the ponds. Currently, approximately 200-300 AFY is recharged. Future recharge activities could take advantage of the nearby imported (State Project Water) raw water line on Cedar Avenue. Percolation rates at the site are considered reasonable based on field observations of surface sediments.
5.3.3.4 Salt Creek between Lyon Avenue and State Street Two potential sites are identified along Salt Creek for a recharge project. One site, State Street Basin, is at the State Street crossing of Salt Creek; a second site, Lyon Basin, is downstream of State Street, near Lyon Avenue. Both sites are located in Hemet South Management Zone.
Lyon Basin is the preferred location and is planned to be approximately 40 acres in size and approximately 5 feet deep, resulting in a maximum storage volume of 200 AF. The volume of the State Street Basin would likely be similar to that of the Lyon Basin. Both sites would initially use storm runoff for recharge purposes. Recharge water to both sites would be conveyed to the site via Salt Creek. It is estimated that five storm events per year could each fill the Lyon Basin, resulting in delivery of approximately 1000 AF/year for recharge. Anticipated future development of the watershed will likely increase the amount of available runoff. The State Street site would likely have slightly lower volumes due to its upstream location. Due to limited upstream development, water quality is anticipated to be good.
Potential problems for development of the project include water rights, relatively shallow depth to water and relatively shallow depth to bedrock that may limit the amount and rates of recharge at the sites.
109 Hemet/San Jacinto Groundwater Management Area
Water Management Plan
Projected Water Demands and Future Plan Phases
5.3.3.5 Little Valley
Little Valley is located in Hemet South Management Zone. Previously in a pilot project, water was supplied over 2 or 3 years via a LHMWD flume to the area. Water for the recharge basin would be provided by local surface runoff, the LHMWD flume, or from imported water.
Infiltration testing in the past has shown rates between 0.6 and 1.4 ft/day in the central part of the valley and 2.0 and 4.6 ft/day in the eastern part of the valley (Rees, 1994).
The following items should be considered before moving forward with this project:
Potential environmental constraints including possible archeological sites; and Shallow depth to bedrock may limit the amount and rate of recharge at the site.
5.3.3.6 Bautista Flood Control Ponds
The Bautista Flood Control Ponds are located in the Upper Pressure Management Zone, very close to the boundary with the Hemet South Management Zone.
The existing ponds are owned and operated by RCFC&WCD and are comprised of a debris dam that creates the 49-acre pond. Future use of the site, apart from continued flood control, would likely be for water harvesting.
5.3.4 IN-LIEU PROJECTS
In-lieu recharge projects involve reducing the usage of groundwater and substituting it with available imported, surface, or recycled water. Successful projects require water users whose needs coincide with the availability and quality of the alternate water supply. The Plan supports the use of quality direct recharge projects.
5.3.4.1 Raw Water In-Lieu Projects
Imported raw water is available from MWD and provides opportunities for in-lieu recharge projects for agricultural users or landscape irrigation. Raw water is available from the State Water Project via EM-14 and from the Colorado River Aqueduct via EM-1. Proximity to these connections is an important factor for keeping costs low for in-lieu projects. One hurdle for such projects is that the period when there is the most availability of raw water, winter, coincides with the period of lowest demand for most agricultural users. Another hurdle is the need for blending the raw water with higher quality groundwater supplies to meet the needs of some of the more sensitive users, such as dairies.
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5.3.4.2 Recycled Water In-Lieu Projects
Recycled water is a reliable source of water year round and offers an opportunity for in-lieu use.
Public perception generally limits the usage of recycled water to agricultural and landscape irrigation uses. The nearest source of recycled water is the San Jacinto Valley Regional Water Reclamation Facility. Proximity to this source is an important factor for keeping costs low for in-lieu projects.
One project already in the planning stages would deliver between 3,500 and 8,000 AFY of recycled water to Rancho Casa Loma and the Scott Brothers Dairy, both located roughly between Ramona Expressway and Gilman Springs Road and between Sanderson Avenue and Bridge Street in the northwestern-most portion of the Upper Pressure and Hemet North Management Zones. The delivered recycled water would coincide with an equivalent reduction in groundwater pumping by both Rancho Casa Loma and Scott Brothers Dairy. Details of the project include construction of approximately 13,000 linear feet of 24-inch pipeline, and acquisition of property in fee title and easement. Project costs would be split between the Public Agencies based on the pro-rata share of proposed production rights. Agreements with Rancho Casa Loma and the Scott Brothers Dairy would set limits on groundwater production and provide for payment of a portion of the O&M costs.
5.3.4.3 Hemet-Simpson Conjunctive Use Project
Currently MWD delivers treated water from Colorado River and State Water Project to its wholesale customers using the Skinner Water Treatment Plant. Although the Skinner plant is at full capacity, during wet years there appears to be excess water available from the plant for other potential wholesale customers.
The Simpson pump station is currently capable of pumping water to both the west and east.
The treated water available from the Skinner plant would be used by customers such as the City of Hemet in lieu of groundwater pumping. The Simpson pump station has a capacity of approximately 14.5 cfs.
The following issues and constraints should be evaluated for this project:
Quantity and timing of water available from the Skinner Plant; Quality of Skinner Plant water in relation to the groundwater quality used by customers such as City of Hemet, and any blending issues; Use of chlorinated water from Skinner Plant versus well water that does not contain chlorine;
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Transmission pipeline from Skinner line to the Simpson pump station and from Simpson pump station to local distribution system;
Connections to the local distribution system and their impacts on the distribution system pressure zones; and
Cost of MWD water and the cost distribution of such delivery.
5.3.4.4 Hemet Water Filtration Plant
Availability of treated imported water for distribution, in-lieu of groundwater production, has become a significant source for reducing stress on the groundwater system. One of the limiting factors in the substitution of imported water for groundwater is the ability to treat the imported water, which requires more treatment than groundwater. To allow for increased use of imported water, EMWD is building the 10 mgd (11,000 AFY) Hemet Water Filtration Plant near the intersection of Commonwealth Avenue and Kirby Street in Hemet. The plant will utilize State Water Project supplies.
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SECTION 6 GROUNDWATER RIGHTS
The purpose of this Section is to document the background and settings in establishing the groundwater production rights for each Public Agency. The Base Production Rights and the method for determining Adjusted Production Rights have been established in a collaborative manner among the agencies, and have been the basis for the distribution of costs in a number of occasions during the development of the Plan.
6.1 PUBLIC AGENCIES BASE PRODUCTION RIGHTS
6.1.1 GENERAL
Together, the Public Agencies agreed upon some basic principles as a basis for allocating Base Production Rights. The base period for documenting actual pumping was determined to be calendar years 1995 through 1999. Figure 6.1 shows the average annual groundwater production by each Public Agency for 1995 – 1999. It was also recognized that, as a result of various operational activities of the Public Agencies, several adjustments would need to be made to the raw pumping data for 1995-1999. It was ultimately agreed to finalize all appropriate adjustments and to make one comprehensive adjustment to each Public Agency’s raw 1995-1999 recorded pumping.
0 2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
EMWD LHMWD Hemet San Jacinto
Entity
Average Production (AFY)
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Figure 6.1 Average Annual Groundwater Production, 1995 - 1999 113 Hemet/San Jacinto Groundwater Management Area
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Groundwater Rights
The operational activities that impacted groundwater resources, and therefore were used to make appropriate adjustments to raw 1995-1999 pumping data, include:
Recharge Activities;
MWD San Jacinto Tunnel Seepage;
Fruitvale Entitlement Water Sold by EMWD to LHMWD, City of Hemet and City of San Jacinto;
River Diversions;
Conveyance Water Deliveries; and
Other Considerations.
The Fruitvale Entitlement allocation amount was determined to be a total of 597 acre-feet for LHMWD, and Cities of Hemet and San Jacinto. The Tunnel Seepage allocation amount was determined to be 1,800 AFY, and the river diversions were determined to be 3,635 AFY for proration to the four agencies. The Public Agencies have, therefore, been assigned the pro-rata shares of Base Production Rights as shown in Table 6.1:
Table 6.1 Base Production Rights
Public Agency Base Production Rights
(AFY)
Base Production Rights
(Percent)
EMWD 10,869 33.7%
LHMWD 11,063 34.2%
City of Hemet 6,320 19.6%
City of San Jacinto 4,031 12.5%
Total 32,283 100 %
The details of the Public Agencies Base Production Right, with their corresponding adjustments, are described below:
6.1.2 EMWD BASE PRODUCTION RIGHTS
For EMWD, the 1995-1999 actual average annual pumping was determined to be 15,166 AFY.
After consideration of all appropriate adjustments, it was determined that EMWD’s Base Production Right would include a deduction of 2,497 acre-feet for conveyance water and an additional net deduction of 1,800 acre-feet for other operational activities, including tunnel seepage, export, and Fruitvale Entitlement water sales. Therefore, EMWD’s Base Production Right was set at 10,869 AFY.
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6.1.3 LHMWD BASE PRODUCTION RIGHTS
For LHMWD, the 1995-1999 actual average annual pumping was determined to be 11,063 AFY.
There were no net adjustments for LHMWD as their credit for the Fruitvale entitlement water purchase tunnel seepage was deemed to be equivalent to their surface water diversion. Thus, the Base Production Right for LHMWD is set to 11,063 AFY.
6.1.4 CITY OF HEMET BASE PRODUCTION RIGHTS
For the City of Hemet, the 1995-1999 actual average annual pumping was determined to be 5,420 AFY. After consideration of all appropriate adjustments, it was agreed that the City of Hemet’s Base Production Right would include an additional 900 AFY pumping right to account for Fruitvale Entitlement water purchase tunnel seepage credit, and surface diversion water.
Therefore, the City of Hemet’s Base Production Right was set at 6,320 AFY.
6.1.5 CITY OF SAN JACINTO BASE PRODUCTION RIGHTS
For the City of San Jacinto, the 1995-1999 actual average annual pumping was determined to be 2,631 AFY. However, review of the city’s historic pumping showed the 1995-1999 base period was not as representative as other historic pumping periods. Therefore, it was agreed for the City of San Jacinto to receive an additional 500 AFY of pumping rights. In addition, after consideration of all other appropriate adjustments, it was determined that San Jacinto’s Base Production Right would include an additional 900 AFY pumping right to account for Fruitvale Entitlement water purchase tunnel seepage credit and surface diversion water. Therefore, the City of San Jacinto’s Base Production Right was set at 4,031 AFY.
6.2 PRIVATE WATER PRODUCER’S PRODUCTION RIGHTS
6.2.1 GENERAL
Development of the Hemet-San Jacinto Water Management Plan recognizes the rights of the overlying pumpers to pump and beneficially use needed groundwater. The overlying pumpers within the management area include Private Water Producers (and the Soboba Band of Luiseño Indians, discussed later). In recognition of the Private Water Producers’ overlying rights, the management plan does not adversely impact or affect these rights and uses that are consistent with historical uses.
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The Plan provides for the Private Water Producers to be Non-participants, Class A Participants, or Class B Participants. For Non-participants, the private producer(s) may elect to not participate and/or not acknowledge the Plan’s existence. Non-participants are free to continue their past practices of pumping groundwater for beneficial uses according to state law. Nonparticipants are also excluded from future participation in the Plan. Class A and Class B Participants are described below.
6.2.2 CLASS A PRODUCTION RIGHTS
Class A Participants in the Plan have agreed to cooperate with the administrative and pumping accounting portions of the Plan. While historic pumping and beneficial uses may continue, the Class A Participants’ pumping facilities are subject to metering, testing, and water level and water quality sampling at no cost to the owner. This information is valuable for successful implementation of the Plan. Class A participants are eligible to convert to Class B Participant status during the first three years of formal Plan implementation (Entry of the Judgment), with the payment of all past assessments (without interest) that would have been incurred as a Class B Participant.
6.2.3 CLASS B PRODUCTION RIGHTS
Class B Participants become participants to the Plan and have their water rights determined.
The annual Base Production Right shall be determined based upon the average annual production from 1995 to 1999, less any amount of water that had been used on land that was developed for non-agricultural purposes after 1999, which is the Participant’s Base Production Right. The Class B Participant shall pay Replenishment Water Assessments for pumping in excess of the individual Base Production Right. Class B Participants are not subject to Administrative Assessments, and until conversion to a Public Agency, not subject to reduction in Safe Yield. Class B Participants may sell or lease unused groundwater to the Watermaster or one of the Public Agencies, under terms and conditions approved by the Watermaster. Upon conversion of a Class B Participant’s land from agricultural to a use that requires water service from a Public Agency, the Public Agency shall credit, to the extent legally permissible, the Class B Participant’s Base Production Right, adjusted pursuant to certain reductions, against any requirement then in effect for any water supply assessment requirements, or against any fees associated with water supply that the Public Agency may then have in effect. The Public Agency serving the converted land shall receive a credit added to its Base Production Right as set forth in the Judgment. Class B Participants to the Plan have also agreed to participate in the groundwater monitoring and pumping accounting portion of the Plan, at no cost to the owner. 116 Hemet/San Jacinto Groundwater Management Area
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6.3 SOBOBA TRIBE WATER RIGHTS
Section 8 of this document provides a detailed description of the Soboba Indian Tribe water rights.
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SECTION 7 SURFACE WATER RIGHTS
This Section provides a description of the surface water rights and licenses held by LHMWD and EMWD. The contents of this Section are provided for general information and documentation of the surface water rights only; such rights are not affected by the Stipulated Judgment or this Plan.
7.1 LHMWD’S DIVERSION RIGHTS
LHMWD holds pre-1914 rights to divert and store water in Lake Hemet, and to divert water from Strawberry Creek, and from the North and South Forks of the San Jacinto River (See Figure 7.1). These rights have been acquired as the successor-in-interest to rights established by the Fairview Land and Water Company, the Lake Hemet Company, the Lake Hemet Water Company, the Florida Water Company, Charles Thomas, H. M. Johnston, E. L. Mayberry, W. F.
Whittier, William B. and Mary Webster, and others.
7.1.1 LAKE HEMET
Construction of Lake Hemet Dam began in 1889 and was completed in 1895. The reservoir is located in Township 6S, Range 3E, Sections 7 and 8. Water rights for the diversion and storage of water are based on actual use and upon at least these Notices of Appropriation filed on November 18, 1884 in Book 1 of Water Claims, page 38; on January 19, 1885 in Book 1 of Water Claims, page 47; on December 23, 1885 in Book 1 of Water Claims, page 115; on April 7, 1886 in Book 1 of Water Claims, page 134; and on October 18, 1890 in Book 2 of Water Claims, page 61.
The reservoir impounds water from Hurkey Creek and the South Fork of the San Joaquin River, and has a capacity of 12,775 acre-feet. Releases from the reservoir are discharged into the South Fork of the San Jacinto River.
7.1.2 SOUTH FORK OF THE SAN JACINTO RIVER
This diversion site is located about a quarter of a mile upstream of the river’s confluence with Strawberry Creek. A wooden diversion dam was originally constructed in 1888, but later replaced with a concrete diversion dam, taking water through a tunnel on the right bank of the stream into a 30-inch pipeline. Water rights are based on actual use and upon at least these Notices of Appropriation filed on June 6, 1885 in Book 1 of Water Claims, page 61; on August 11, 1886 in Book 1 of Water Claims, page 160; and on the Judgment entered 119 Hemet/San Jacinto Groundwater Management Area
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#
#
#
%
#
Grant
Avenue
Diversion
Lake Hemet
Diversion
Strawberry
Creek
Diversion
South Fork
Diversion
North Fork
Diversion
·243 |}þ
·|}þ74
Legend
% EMWD Diversion Location*
# LHMWD Diversion Location**
Major Watercourses
Lakes and Reservoirs
Major Roads
Management Area
October 2007
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Location of Surface Water Diversions
Figure 7.1
0 0.5 1
Miles
±
*Source: EMWD
**Source: LHMWD
Indian
Creek
North Fork
San Jacinto
River
South Fork San
Jacinto River
Strawberry
Creek
Bautista
Creek
Poppet
Creek
Lake Hemet
Surface Water Rights
November 24, 1894 in the case of Florida Water Company v. Mary Webster, et al., No. 169, Riverside Superior Court.
7.1.3 NORTH FORK OF THE SAN JACINTO RIVER
This diversion site is now located on the North Fork of the San Jacinto River near the “Falls” in Section 17, T5S, R2E. The original facilities consisted of a small rock dam and a 10-inch sheet iron pipe constructed in about 1887. Current facilities, constructed in 1969-1970, consist of a concrete diversion dam, concrete intake and control structure, and 24-inch steel pipeline. Water rights are based on actual use and upon at least these Notices of Appropriation filed on September 14, 1886 in Book 1 of Water Claims, page 173; on May 19, 1897 in Book 1 of Water Claims, page 159; and on the Judgment described above.
7.1.4 STRAWBERRY CREEK
LHMWD’s diversion site on Strawberry Creek is located in Section 28, T5S, R2E, about 1,300 feet upstream of its confluence with the South Fork of the San Jacinto River. Original construction of a concrete diversion dam and flume, carrying the water over the South Fork and into the main water line, occurred in about 1905. Current facilities consist of a concrete diversion dam, intake structure, and 28-inch pipeline. Water rights are based upon actual use and at least on these Notices of Appropriation filed on January 27, 1885 in Book 1 of Water Claims, page 49; on August 11, 1886 in Book 1 of Water Claims, page 160; and on deeds recorded July 24, 1885 in Book 51, page 145; on August 25, 1886 in Book 64, page 223; on February 21, 1887 in Book 73, page 235; on April 21, 1887 in Book 79, page 264; on April 27, 1887 in Book 79, page 266; and on the Judgment described above.
7.2 EMWD’S DIVERSION RIGHTS
EMWD holds a license to divert water from the San Jacinto River (see Appendix G). EMWD currently does not divert surface water for direct use, but recharges the water, when available, into the aquifer to augment groundwater supplies. Thus, the diversion is not directly part of EMWD’s water supply. However, it plays an indirect role in groundwater resources.
Information on these diversions is presented here.
EMWD’s recharge of surface water from the San Jacinto River to the Canyon Management Zone takes place at EMWD’s Grant Avenue Ponds in the Valle Vista area (See Figure 7.1). An application for a permit to appropriate water from the San Jacinto River and Indian Creek, Application 924, was filed on February 14, 1918 by the Citizens Water Company. Permit 468 121 Hemet/San Jacinto Groundwater Management Area
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was subsequently approved on August 15, 1918. On November 23, 1920, the filing was assigned to the FMWC as the successor-in-interest to the Citizens Water Company. Upon its 1971 acquisition of the FMWC, EMWD became the successor-in-interest to the filing.
Based on Application 924 and Permit 468, the State Water Resources Control Board issued License No. 10667 for the Diversion and Use of Water to EMWD on June 8, 1976. This license, still held by EMWD, allows for the diversion, underground storage by spreading, and subsequent extraction and beneficial use of 5,760 AFY of San Jacinto River water to be collected from November 1 of each year to June 30 of the succeeding year at a rate of 41 cfs. Additionally, the rate of diversion may be increased to a maximum of 100 cfs provided that the total quantity in any 30-day period does not exceed 2,442 AF.
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SECTION 8 SOBOBA TRIBE SETTLEMENT REQUIREMENTS
8.1 ORIGINAL SOBOBA CLAIM
In 1995 the Soboba Tribe filed claims against EMWD and LHMWD for an alleged infringement of their water rights, and for damages in the sum of $70 million related to the alleged historical interference with the Tribe’s rights and the unauthorized use of its water. EMWD and LHMWD denied any such interference or wrongful use of Tribal water, but agreed to negotiations to determine the water rights of the Tribe.
8.1.1 EARLY NEGOTIATIONS
Negotiations with the Tribe began in 1995 and in time involved the active participation of the United States.
8.1.2 UNITED STATES SETTLEMENT PROPOSAL
In 1998, the United States proposed a settlement whereby the Tribal Water Right would be determined to be 9,000 AFY, and the Federal government would provide a supply of 7,500AFY.
Subsequently this proposal proved not to be feasible.
8.1.3 TRIBAL CLAIM AGAINST MWD
In 2000 the MWD was brought into the dispute when the Tribe filed suit against MWD in the U.S. District Court in Los Angeles, Case No. 00-04208 (GAF) (MANx) (“Los Angeles case”). The complaint alleged that the MWD tunnel drilled through Mt. San Jacinto in the 1930’s had dried up springs on the Reservation and otherwise interfered with the Tribe’s water supply.
8.1.4 MWD’S CROSS COMPLAINT
MWD brought EMWD into the Los Angeles action based upon an indemnity agreement signed by EMWD when the District was annexed to MWD, and in return for seepage water that continued to flow into the San Jacinto tunnel.
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8.1.5 FINAL NEGOTIATIONS
After lengthy negotiations among the Tribe, United States, EMWD, LHMWD and MWD, the parties reached an Agreement in 2004, subject to approval of Congress.
8.1.6 STATUS OF CONGRESSIONAL APPROVAL
The Agreement has not yet been approved by Congress, and it expires if such approval is not obtained by December 31, 2007.
8.2 FRAMEWORK OF THE SETTLEMENT AGREEMENT
The Agreement determines the water rights of the Tribe, and settles all claims among the parties, including those made in the Los Angeles case. The Agreement will be incorporated into a Stipulated Judgment in the Los Angeles case, and made subject to the continuing jurisdiction of the Court.
8.3 TRIBAL WATER RIGHT
Under the Agreement, the Tribe has a prior and paramount right, superior to all others, to pump 9,000 acre-feet annually from the Canyon Sub-basin and the Intake portion of the Upper Pressure Sub-basin for any use on the Reservation, and on lands now owned or hereafter acquired by the Tribe contiguous to the Reservation or within the above-mentioned Sub-basins.
The Tribe’s right is subject to an agreement to limit its pumping according to a yearly schedule, with a maximum of 4,100 AFY, for 50 years after the effective date of the Agreement.
8.4 PAYMENTS TO THE TRIBE
The United States agrees to pay $11 million to the Tribe, and EMWD and LHMWD are obligated to pay $17 million to the Tribe.
8.5 FUNDS RECEIVED BY THE LOCAL AGENCIES
The United States agrees to contribute to EMWD, on behalf of the participants in this Water Management Plan, the sum of $10 million for construction and operation of recharge facilities to accommodate deliveries of Imported Water.
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8.6 IMPORTED WATER
MWD agrees to provide an average supply of 7,500 AFY of Imported Water to recharge the Canyon Management Zone and Intake portion of the Upper Pressure Management Zone, at untreated replenishment rates, until 2035, and to negotiate in good faith for an extension of the supply for a total of 50 years after the effective date of the Agreement.
8.6.1 MWD STORAGE RIGHT
The local agencies are obligated to provide groundwater recharge facilities to accommodate a flow rate of 42 cfs and to store up to 40,000 acre feet of Imported Water.
8.6.2 USE OF MWD SUPPLY
The supply of Imported Water provided by MWD is to supply water for the Tribe, and to reduce overdraft. Water not used by the Tribe is available for use by the participants in the Water Management Plan, pursuant to the terms hereof.
8.7 WATER QUALITY REQUIREMENTS
The Agreement provides that all water recharged shall conform to all applicable State water quality regulations and recharge in the Canyon Sub-basin and shall not exceed Federal or State primary or secondary drinking water quality standards (except for turbidity, color or coliform bacteria), nor 0.3 mg/l boron, or 0.05 mg/l lithium.
8.8 PROPERTY TRANSACTIONS
EMWD shall convey to the Tribe approximately 106 acres of land at Domenigoni Parkway and Highway 79. MWD shall convey to the Tribe approximately 21.7 acres of land. LHMWD shall make available for environmental mitigation purposes approximately 12 acres in the San Jacinto River bed. The Tribe shall make available up to 98 acres of land for habitat preservation and/or environmental mitigation in connection with the recharge facilities.
8.9 APPROVAL OF WATER MANAGEMENT PLAN
The Agreement provides that EMWD and LHMWD, with the cooperation of other groundwater producers, shall develop and implement a Water Management Plan for the Canyon 125 Hemet/San Jacinto Groundwater Management Area
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Management Zone and Intake portion of the Upper Pressure Management Zone that will address the current overdraft, and recognize and take into account the Tribal Water Right. This Plan is intended to meet such requirements of the Agreement, and is subject to the approval of the Soboba Tribe and the United States. No implementation or subsequent modification of this Plan shall threaten or adversely affect the rights of the Tribe under the Agreement, and the Tribe and the United States shall have the right under the continuing jurisdiction of the Court in the Los Angeles case to litigate any such issue.
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SECTION 9 INSTITUTIONAL PLAN
9.1 PURPOSE
The purpose of the Watermaster is to implement the Water Management Plan (The Plan) as embodied in the Stipulated Judgment (JUDGMENT) in Eastern Municipal Water District v.
Lake Hemet Municipal Water District, et al.; said implementation may be by Watermaster actions alone, actions undertaken through or in conjunction with one or more Public Agency Members or through a Joint Powers Authority (JPA) composed of some or all of its Public Agency Members.
9.2 WATERMASTER
9.2.1 COMPOSITION
The Watermaster Governing Board will consist of one (1) elected official representing each of the Public Agencies, namely, EMWD, LHMWD, and the Cities of Hemet and San Jacinto (collectively, Public Agencies), and one (1) representative selected by the Class A and Class B private groundwater producers (Private Water Producers).
9.2.2 TERMS OF OFFICE
Each member of the Watermaster shall serve until replaced by the Public Agency or Private Water Producers that made the original appointment.
9.2.3 REMOVAL AND REPLACEMENT
Any Watermaster member may be removed and replaced by the same procedure used in his or her appointment.
9.2.4 VOTING
Each member of the Watermaster shall have one (1) vote. All actions by the Watermaster shall require three (3) affirmative votes, except actions in the following matters that shall require four (4) affirmative votes:
Any change sought in the form of governance;
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Any change in voting requirements;
Establishing, levying, increasing or decreasing all assessment amounts; Determining the extent of overdraft and quantifying safe yield; Determining Adjusted Production Rights;
Decisions regarding the financing of supplemental water or facilities, other than any financing provisions included in the Judgment;
Decisions regarding ownership of facilities, other than ownership of the Phase I facilities (described in Section 3.2.2.1), which facilities shall be owned by EMWD, subject to a right of use by those parties participating in the financing thereof; Policies for the management of the Management Area;
Any decision that involves a substantial commitment by the Watermaster, including any contracts for conserved water;
Retaining the services of legal counsel or Advisor; and Adoption or amendment of an annual budget.
9.3 RULES AND REGULATIONS
The Watermaster may make such rules and regulations as may be necessary for the implementation of the Water Management Plan and Judgment, and for its own operations and procedures, subject to Court approval.
9.4 MEETINGS
The meetings of the Watermaster and standing committees will be subject to those provisions of the California Government Code known as the Brown Act (also popularly known as the Open Meeting Laws).
9.5 WATERMASTER ORGANIZATION
In carrying out its development and implementation responsibilities, the Watermaster may hire full-time or part-time personnel, such as managers, engineers, attorneys, hydrologists, geologists, accountants, operators, secretaries, clerical or others; may retain outside consultants on a full-time, part-time, or as-needed basis; and may contract with other agencies to perform some or all of the development and implementation tasks.
The Watermaster shall retain the services of an independent attorney or law firm to act as the Watermaster’s legal counsel.
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The Watermaster shall retain the services of a qualified independent individual or engineering firm with appropriate experience in hydrology to serve as Advisor to the Watermaster. The Advisor shall assist the Watermaster in the performance of the Watermaster’s responsibilities as follows:
Provide advice to the Watermaster on all matters within the authority and jurisdiction of the Watermaster;
Provide recommendations for action to the Watermaster on all matters within the authority and jurisdiction of the Watermaster;
Evaluate proposals for projects and/or recommendations for action received from members of the Watermaster regarding matters within the authority and jurisdiction of the Watermaster;
Propose and/or evaluate contracts and other agreements to be entered into by the Watermaster necessary to the performance of its responsibilities; To administer all contracts and agreements entered into by the Watermaster; Assist the Watermaster in evaluating and analyzing data, the collection of which is required under the Judgment and/or Water Management Plan; Coordinate the evaluation and analyses of data, proposals, projects, and recommendations by the TC with members of the Watermaster and other consultants of the Watermaster;
Serve as the Chairman of the TC; and
Perform such other services, and take such actions, as may be approved by the Watermaster, that are necessary to implement and execute the directions and policies of the Watermaster.