Attachment C - 2025 Urban Water Management Plan Administrative Draft.pdf — Santa Maria City Council, October 8, 2026

City of Santa Maria
Urban Water Management Plan
2025 Update
Prepared by:

City of Santa Maria
Utilities Department
Administrative
Attachment C
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CONTENTS
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Table of Contents
Plan Introduction and Lay Description........................................................................1-2 Plan Introduction..........................................................................................................................................1-2 Lay Description .............................................................................................................................................1-2 Plan Preparation............................................................................................................ 2-1 Basis for Preparing a Plan............................................................................................................................2-1 UWMP Preparation ......................................................................................................................................2-2 Service Area Description............................................................................................... 3-1 General Description .....................................................................................................................................3-1 Demographics................................................................................................................................................3-1 Service Area Population...............................................................................................................................3-4 City of Santa Maria System Population Projections................................................................................3-5 Service Area Climate.....................................................................................................................................3-5 Water Use Characterization .......................................................................................... 4-1 Customer Connections.................................................................................................................................4-1 Current and Projected Water Use ..............................................................................................................4-1 Lower Income Projected Water Demands...............................................................................................4-4 Transfers and Sales to Other Water Agencies..........................................................................................4-5 Additional Water Uses and Losses.............................................................................................................4-5 Estimating Future Water Savings...............................................................................................................4-6 Climate Change Impacts to Water Demands...........................................................................................4-8 SB X7-7 Baselines, 2020 Targets, and 2025 Reporting.................................................. 5-1 Baseline and Targets.....................................................................................................................................5-1 Normal-Year Water Supply Characterization ............................................................... 6-1 Water Sources................................................................................................................................................6-1 Wholesale Supplies........................................................................................................................................6-4 Return Flows..................................................................................................................................................6-4 Groundwater..................................................................................................................................................6-4 Transfers and Exchanges.............................................................................................................................6-8 Desalinated Water Opportunities...............................................................................................................6-9 Recycled Water Opportunities..................................................................................................................6-10 Climate Change Impacts to Water Supplies ...........................................................................................6-11

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Future Water Projects.................................................................................................................................6-12 Water Provided by Wholesale Agency.....................................................................................................6-13 Energy Consumption .................................................................................................................................6-13 Future Water Supplies................................................................................................................................6-14 Water Service Reliability and Drought Risk Assessment ............................................. 7-1 Supply Reliability...........................................................................................................................................7-1 Normal Water Year Analysis.......................................................................................................................7-4 Single-Dry Year Analysis .............................................................................................................................7-5 Multiple-Dry Year Analysis.........................................................................................................................7-5 Drought Risk Assessment ...........................................................................................................................7-6 Resource Optimization ................................................................................................................................7-6 Climate Change Impacts to Water Reliability...........................................................................................7-8 Water Shortage Contingency Plan ................................................................................ 8-1 Demand Management Measures.................................................................................. 9-1 Water Waste Prevention Ordinances.........................................................................................................9-1 Metering..........................................................................................................................................................9-1 Tiered Rate Structure....................................................................................................................................9-2 Public Education and Outreach .................................................................................................................9-2 Programs to Assess and Manage Distribution System Real Loss.........................................................9-3 Water Conservation Program and Staffing Support ...............................................................................9-4 Other Demand Management Measures ....................................................................................................9-4 Plan Adoption, Submittal, and Implementation..........................................................10-1 Notice to Cities and Counties Regarding UWMP Review...................................................................10-1 Plan Adoption, Submittal, and Implementation ....................................................................................10-2 References....................................................................................................................11-1

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List of Figures
Figure 1-1. City of Santa Maria System Location Map .................................................................................1-3 Figure 3-1. City of Santa Maria Service Area................................................................................................3-2 Figure 3-2. Zoning Map ..............................................................................................................................3-3 Figure 3-3. City of Santa Maria’s Water Service Area ...................................................................................3-4 Figure 3-4. Monthly Average Temperature Range in Santa Maria based on 69 Years Historical Data...........3-6 Figure 3-5. Monthly Average Precipitation in Santa Maria based on 69 Years Historical Data .....................3-7 Figure 4-1. Customer Connections (2025) ...................................................................................................4-1 Figure 5-1. Historical Per Capita Water Use ................................................................................................5-4 Figure 6-1. City of Santa Maria Production Facilities...................................................................................6-3

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List of Tables1
Table 2-1. Retail Public Water System Information (DWR Submittal Table 2-1) ................................................2-1 Table 2-2. Plan Identification (DWR Submittal Table 2-2) ......................................................................................2-1 Table 2-3. Supplier Identification (DWR Submittal Table 2-3) ...............................................................................2-2 Table 2-4. Retail Water Supplier Information Exchange (DWR Submittal Table 2-4)........................................2-2 Table 3-1. Population – Current and Projected (DWR Submittal Table 3-1)........................................................3-5 Table 3-2. Monthly Average Climate Data Summary for Santa Maria based on 69 Years Historical Data......3-6 Table 4-1. 2025 Water Uses (DWR Submittal Table 4-1).........................................................................................4-2 Table 4-2. Projected Water Uses (DWR Submittal Table 4-2).................................................................................4-3 Table 4-3. Lower Income Projected Water Demands (AF) for City of Santa Maria............................................4-4 Table 4-4. Inclusion of Savings and Lower Income Projections (DWR Submittal Table 4-3)...........................4-4 Table 4-5. Water Loss Audit Reporting (DWR Submittal Table 4-5).....................................................................4-6 Table 4-6. Water Loss Volume from Audits (2020-2025).........................................................................................4-6 Table 4-7. Summary of Progress Toward 2028 Real Water Loss Standard (DWR Submittal Table 4-6)..........4-7 Table 4-8. Summary of Progress Toward 2028 Apparent Water Loss Standard (DWR Submittal Table 4-6) 4-7 Table 4-9. Impacts of Climate Change on the Region by Mid-Century. ................................................................4-8 Table 5-1. Summary of Base Period Ranges of the City of Santa Maria...............................................................5-1 Table 5-2. Base Daily Per Capita Water Use (10- to 15-year Range) of the City of Santa Maria.......................5-2 Table 5-3. Base Daily per Capita Water Use (5-year Range) of the City of Santa Maria.....................................5-2 Table 5-4. SBX7-7 202 Target Progress (DWR Submittal Table 5-1).....................................................................5-3 Table 6-1. Current and Projected Water Supplies (AF/YR) for the City of Santa Maria (Adapted from DWR Submittal Table 6-9) .....................................................................................................................................6-2 Table 6-2. Wholesale Supplies – Existing and Planned Sources of Water (long-term average) (Adapted from DWR Submittal Table 6-9)..........................................................................................................................6-4 Table 6-3. Groundwater Pumping Rights....................................................................................................................6-7 Table-6-4. Wells and Well Capacity in the City of Santa Maria System..................................................................6-7 Table 6-5. Groundwater Pumping History 2021-2025 (DWR Submittal Table 6-1)............................................6-8 Table 6-6. Projected Groundwater Pumping Amounts by the City of Santa Maria from 2030 to 2050...........6-8 Table 6-7. Transfer and Exchange Opportunities......................................................................................................6-9 Table 6-8. Wastewater Collected within Service Area in 2025 (DWR Submittal Table 6-2)............................ 6-10 Table 6-9. Current and Projected Wastewater (Adapted from DWR Submittal Table 6-3)............................. 6-11 Table 6-10. Expected Future Water Supply Projects (DWR Submittal Table 6-7)............................................ 6-13 Table 6-11. Retail Agency Demand Projections From Wholesale Suppliers...................................................... 6-13 Table 6-12. Energy Intensity (2025)........................................................................................................................... 6-14 Table 6-13. Projected Water Supplies (DWR Submittal Table 6-9) ..................................................................... 6-15 Table 7-1. CCWA Long-Term Water Supply Reliability Estimate ..........................................................................7-1 Table 7-2. Supply Reliability for the City of Santa Maria for Year 2045 (Adapted from DWR Submittal Tables 6-9, 7-1, 7-3, and 7-4) ...................................................................................................................................7-4 Table 7-3. Comparison of Projected Normal Year Supply (AF) and Demand for Normal Water Year (AF) (DWR Submittal Table 7-2).........................................................................................................................7-5 Table 7-4. Comparison of Projected Supply (AF) and Demand for Single-Dry Year (AF) (DWR Submittal Table 7-3)........................................................................................................................................................7-5 Table 7-5. Comparison of Projected Supply and Use for Multiple-Dry Years (AF) (DWR Submittal Table 7-4) ..........................................................................................................................................................................7-6 Table 10-1. Coordination with Agencies................................................................................................................... 10-1 1 To facilitate cross reference between this UWMP and tables required for submission by DWR, required DWR table number is shown in parenthesis as follows: (DWR Table #-#). See Appendix C for as-submitted DWR Submittal Tables.

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Appendices
Appendix A – Santa Maria Valley Water Conservation District vs. City of Santa Maria, et al., Case No. 770214 (Superior Court of the State of California, County of Santa Clara, June 30, 2005) Appendix B – AWWA Water Audit Loss Tables
Appendix C – DWR Submittal Tables
Appendix D – Central Coast Water Authority Future Projections Appendix E – Section 4.2, Regional Recycled Water – Excerpt from Santa Barbara County Long Term Water Supply Report
Appendix F – Reduced Delta Reliance Analysis
Appendix G – 2024 Water Quality Report
Appendix H – 2026 Water Shortage Contingency Plan
Appendix I – Ordinances, Resolutions, and Municipal Code Sections Appendix J – Supporting Documentation: Adoption, Submittal, Implementation Appendix K – UWMP Checklist
CHAPTER ONE: PLAN INTRODUCTION AND LAY DESCRIPTION
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List of Abbreviations
AF Acre-Feet
AMI Advanced Metering Infrastructure
BMPs Best Management Practices
CCWA Central Coast Water Authority
CII Commercial, Industrial, Institutional
CUWCC California Urban Water Conservation Council
CWC California Water Code
DAC Disadvantaged Community
DOF Department of Finance, California
DWR Department of Water Resources, California
ETo Evapotranspiration
GPCD Gallons per Capita per Day
GPD Gallons per Day
GPM Gallons per Minute
GSWC Golden State Water Company
IRWM Integrated Regional Water Management
IRWMP Integrated Regional Water Management Plan
MOU Memorandum of Understanding
NCSD Nipomo Community Services District
SB Senate Bill
SBCAG Santa Barbara County Association of Governments
SMVWCD Santa Maria Valley Water Conservation District
SWP State Water Project
TOC Total Organic Carbon
TDS Total Dissolved Solids
ULFT Ultra Low-Flow Toilet
UWMP Urban Water Management Plan
WWTP Wastewater Treatment Plant
WRCC Western Regional Climate Center
YR Per Year
CHAPTER ONE: PLAN INTRODUCTION AND LAY DESCRIPTION
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Chapter 1. Plan Introduction and Lay Description

1.1 Plan Introduction
The Urban Water Management Plan (“UWMP”) for the City of Santa Maria (“City” or “Santa Maria”) is prepared in compliance with Division 6, Part 2.6, of the California Water Code (“CWC”) §§ 10610-10656 and §§ 10608 as last amended by Senate Bill (“SB”) 606, the Urban Water Management Planning Act (“Act”). The original bill was enacted in 1983 and has been amended more than 20 times since then. Increased emphasis on drought contingency planning, water demand management, reclamation, and groundwater resources has been provided through the updates to the original bill.

The UWMP describes the City’s water supply, water demands, water reliability, and water conservation efforts.

This document includes estimated population growth and water demand through the year 2050 and serves as a long-range planning document for the City. This UWMP is an update and replaces the City’s 2020 UWMP.

The UWMP was structured following the California Department of Water Resources (“DWR”) 2025 UWMPs Guidebook for Urban Water Suppliers – Final, and new elements required for the UWMP have been included.

All reporting of water use throughout this report is on a calendar year basis, and all water figures are in units of acre-feet (“AF”).

1.2 Lay Description
Santa Maria is a charter city located in the Santa Maria Valley of Santa Barbara County, about 180 miles north of Los Angeles. The City Utilities Department provides water distribution and wastewater collection, treatment, and disposal services to the City and to a few small areas outside its city limits. The City’s Public Water System Number is CA4210011. The service area is primarily characterized by residential and commercial land use.

Figure 1-1 illustrates the location of the City.

The unincorporated community of Orcutt generally of the south of the City of Santa Maria receives its water supply primarily from Golden State Water Company (“GSWC”), a private entity.

Historically, the City pumped water from the Santa Maria Valley Groundwater Basin (“Basin”) as its sole water supply. The City began receiving State Water Project (“SWP”) water from the Central Coast Water Authority (“CCWA”) via the Coastal Branch Aqueduct in 1997. The SWP water augments local groundwater supplies and is generally higher-quality water. The City pumps groundwater from the Basin which is under a courtordered settlement agreement. The City’s groundwater rights in the Basin are described in Chapter 6 and a copy is included as Appendix A.

As of January 2025, the City had an estimated population of 112,208, according to a May 2025 report by the California Department of Finance (California Department of Finance, 2025). The City served water to 23,273 homes, businesses, and other facilities. Currently, the City obtains its water from two sources: State Water Project surface water imported from northern California through a series of canals and pipelines and groundwater that is pumped to the surface using several wells. The groundwater basin is recharged with water from Twitchell Reservoir, various detention basins, and percolation, including from the City’s percolation ponds at the wastewater treatment plant. These sources are expected to provide adequate water through the year 2050.

The State of California set a goal in 2009 for all Cities to reduce their water use by 20% and to achieve this goal by the year 2020. To reach this goal, the City needed to limit water use to 118 gallons per day for each person (this is referred to as gallons per capita per day (GPCD) throughout this report). In 2020, the City met this goal CHAPTER ONE: PLAN INTRODUCTION AND LAY DESCRIPTION
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with a per person use of 109 GPCD. The City has continued water conservation programs and in 2025 achieved a per person use of 89 GPCD.

The City has special water conservation programs that can be implemented in the event of drought or other water supply issues. The City is also prepared to respond to a water supply interruption from an emergency.

These measures are documented in the Water Shortage Contingency Plan, which is included in this document.

The City does not expect to experience water shortages unless there is a catastrophic interruption of supply.

Figure 1-1. City of Santa Maria System Location Map
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Chapter 2. Plan Preparation

2.1 Basis for Preparing a Plan
Urban water suppliers with more than 3,000 service connections or water use of more than 3,000 AF annually are required to submit to the DWR an UWMP every five years. The City owns a public water system with approximately 23,273 active domestic water service connections producing 11,158 AF of water in 2025.

Therefore, the City is required to complete this document as a retail water supplier. The deadline for adoption of a water supplier’s 2025 UWMP is July 1, 2026.

The City is preparing this UWMP independently, and it covers the City water service area. This UWMP is not part of a regional effort or regional alliance.

Table 2-1. Retail Public Water System Information
(DWR Submittal Table 2-1)
Submittal Table 2-1 Retail: Public Water Systems
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
Volume of
Water Supplied
2025
(AF)
CA4210011 City of Santa Maria 23,273 11,158
Total 23,273 11,158
Table 2-2. Plan Identification
(DWR Submittal Table 2-2)
Submittal Table 2-2: Plan Identification
Type of Plan Name of Regional
Alliance or RUWMP
Individual UWMP
Water Supplier is also a member of a
SB X7-7 Regional Alliance n/a
Regional Urban Water Management Plan
(RUWMP) n/a
This space is intentionally blank.

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Table 2-3. Supplier Identification
(DWR Submittal Table 2-3)
Submittal Table 2-3: Supplier Identification
Type of Supplier (select one or both)
Supplier is a wholesale supplier
Supplier is a retail supplier
Fiscal or Calendar Year (select one)
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Units of measure used in UWMP
Unit AF

2.2 UWMP Preparation
The City prepared this UWMP. During preparation, documents prepared by the City and other entities were reviewed, and the results of those documents were incorporated as applicable into this UWMP. The list of documents is provided in Chapter 11.

The adopted UWMP was available for public review during regular business hours at the City Utilities Department located at 2065 East Main Street, Santa Maria, California, and on the City website. Copies of the UWMP were submitted to the DWR, cities and counties within and adjacent to the service area, the California State Library, and other applicable agencies within 30 days as required by §§ 10644 and 10645.

The City has provided its wholesale supplier, CCWA, with information regarding its supply and demand projections. The City has also coordinated with and received information from other agencies on the development of its UWMP as directed in the DWR UWMP Guidebook, details of which are provided later in this document.

Table 2-4. Retail Water Supplier Information Exchange
(DWR Submittal Table 2-4)
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 (h).

Wholesale Water Supplier Name

CENTRAL COAST WATER AUTHORITY (CCWA)
CHAPTER THREE: SERVICE AREA DESCRIPTION
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Chapter 3. Service Area Description

3.1 General Description
The City is bounded on the north by the Santa Maria River and the San Luis Obispo County line. Figure 3-1 illustrates the City’s service area and current planned expansion areas. The service area is primarily characterized by residential and commercial land use. The service area boundary also includes developed and undeveloped land area to the west, south, and east of the city limits.

The City relies on two sources of supply: local groundwater and imported State Water. The City does not have a dedicated Water Treatment Plant, as both sources of water are generally of a quality which does not need significant treatment prior to distribution. Instead, both sources are blended at the City’s Blending & Disinfection Facility, where drinking water standards are met. The blended potable water is distributed through a single pressure zone that contains approximately 340 miles of pipe, 3,600 fire hydrants, and 23,000 metered water connections. Groundwater is currently produced from seven active municipal wells.

The City has two active drinking water reservoirs totaling approximately 14 million gallons or 43 acre-feet (AF) of storage. Construction is underway on an eighth well, Well 15.

3.2 Demographics
The City’s service area outside the city limits currently includes small portions of primarily undeveloped parcels in unincorporated Santa Barbara County. As those areas are generally not currently served with City water, the city limits were chosen to be demographically representative of the whole service area.

According to the United States Census Bureau (“US Census”) data estimates, Santa Maria has an average household size of 3.73 persons (United States Census Bureau, 2019-2023). The entire City does not meet the definition of a Disadvantaged Community (“DAC”). According to CA Public Resources Code 75005(g), a DAC is defined as a community with an annual median household income that is less than 80% of the statewide annual median household income. The estimated median household income for Santa Maria is $84,617 in 2019 dollars, and the median household income for California is $96,334 in 2019 dollars, according to the US Census.

Therefore, the median household income for Santa Maria is 87.8% of the statewide annual median household income. While the overall service area is over the DAC threshold, it is important to note that the DAC Mapping Tool on the State website (California Department of Water Resources, Census Tracts (ACS: 2019-2023)) shows Santa Maria containing mostly DAC census tracts.

Figure 3-2 is the latest Zoning Map for Santa Maria available on the City’s website showing the distribution of different types of land uses. Residential developments represent the majority of land use in Santa Maria with a predominance of single-family homes. The remaining portion of the City’s land use is divided among industrial and commercial uses. This preference for single-family housing is expected to continue; however, the City has seen a significant increase in multi-family residences in recent years as property values have increased. In the future, development of affordable multi-family housing units may be constructed within the Santa Maria service area and planned expansion areas.

The City of Santa Maria area experienced average annual population growth of 2.38% between 1992 and 2015, approximately 1.0% from 2015 to 2020, and approximately 1.5% from 2020 to 2024. The City is expected to grow at an average annual rate of about 0.9% between 2025 and 2040 (Santa Barbara County Association of Governments, 2019).

CHAPTER THREE: SERVICE AREA DESCRIPTION
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Figure 3-1. City of Santa Maria Service Area
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Figure 3-2. Zoning Map
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3.3 Service Area Population
A portion of the City’s service area lies outside the city limits within unincorporated areas of Santa Barbara County. The City provides water to a portion of that unincorporated area, which is approximately 117 acres of land. A portion comprised of about 391 acres within the City limits is served by GSWC. Overall, the City’s service area comprises more than 97% of the City area. Figure 3-3 illustrates the City’s service area and GSWC’s service area.

The service area population was estimated using Technical Methodology 2 described in Methodologies for Calculating Baseline and Compliance Urban per Capita Water Use (California Department of Water Resources, 2016). The City is a retail water supplier that falls into the Category 1 supplier, which means the City’s actual distribution area overlaps substantially (i.e., greater than 95%) with the City boundary. A few residents may be served by private wells, but they represent less than 0.1% of the population and were not included in population estimates.

Population data provided by the California Department of Finance (“DOF”) was used for calculating the historic trends in population dynamics. That data was also used for developing the baseline and target for the water conservation plan. Data from the Santa Barbara County Association of Governments (“SBCAG”) Regional Growth Forecast (Santa Barbara County Association of Governments, 2019) was used to develop estimates of future population within the City. The SBCAG report projected different growth rates for each five-year period in the future. Water demand projections presented in Chapter 4 are based on the population projections provided by SBCAG.

Figure 3-3. City of Santa Maria’s Water Service Area
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3.4 City of Santa Maria System Population Projections
The population served within the City’s boundaries was approximately 112,208 in 2025 based on the latest DOF population estimate (California Department of Finance, 2025). A summary of projected population within the City’s service boundaries is presented in Table 3-1. The City’s 2020 UWMP predicted the 2025 population to reach approximately 116,907. According to the 2019 SBCAG Regional Growth Forecast document, the forecast for the City population in 2025 was 121,900 (Santa Barbara County Association of Governments, 2019). The SBCAG forecast for 2025 is approximately 8.6% greater than the 2025 population of 112,208 estimated by the Department of Finance. The population forecasts from the SBCAG document have been revised down by starting the projections from the 2025 Department of Finance population and increasing population using the SBCAG growth rates to better fit current population trends. This means the projected 2050 population of 131,788, according to this UWMP, is lower than the older SBCAG projected 2050 population of 143,100.

Table 3-1. Population – Current and Projected
(DWR Submittal Table 3-1)
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
2025 2030 2035 2040 2045 2050 (opt)
112,208 117,482 122,768 128,047 129,968 131,788
NOTES: 2025 population was estimated by the Department of Finance on January 1, 2025. The forecasts for 2030 through 2050 were sourced from the SBCAG Regional Growth Forecast and were revised proportionally from their estimate versus actual from 2025.

3.5 Service Area Climate
The Western Regional Climate Center (WRCC) website maintains historical climate records for 69 years (from January 1,1948 to June 9, 2016) for Santa Maria (Western Regional Climate Center, 2016). Table 3-2 presents the monthly average climate summary based on this 69-year historical data for Santa Maria. In winter, the lowest average minimum monthly temperature is 39 degrees Fahrenheit while the highest maximum monthly average temperature reaches 74 degrees Fahrenheit in the summer, as presented in Figure 3-4. Figure 3-5 presents the monthly average precipitation based on the 69-year historical data.

The typical rainy season in Santa Maria is from November to March. Average monthly precipitation during the winter months ranges from approximately one to three inches. Average annual rainfall is approximately 13 inches. Low humidity occurs in the summer months from May to October. The moderately hot and dry weather during the summer months typically results in moderately higher water demand in the summer months.

The California Irrigation Management Information System website tracks and maintains records of evapotranspiration (“ETo”) data. ETo statistics used in this report came from the Santa Maria station (CIMIS Monthly Average Eto Report for Santa Maria II, #232). ETo is a standard measurement of environmental parameters that affect the water use of plants. ETo is given in inches per day, month, or year, and is an estimate of the evapotranspiration of a large field of well-watered, cool-season pasture grass (tall fescue) that is four to six inches tall.

The monthly average ETo is presented in inches in Table 3-2. As indicated, a greater quantity of water evaporates from May through August, which may result in higher water demand (California Irrigation Management Information System, 2025).

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Table 3-2. Monthly Average Climate Data Summary for Santa Maria based on 69 Years Historical Data Month Standard Monthly
Average ETo(1) (inches)
Average Total
Rainfall(2) (inches)
Average Temperature(2)
(degrees Fahrenheit)
Max Min
January 2.13 2.53 63.3 39.0
February 2.71 2.73 64.3 40.9
March 3.92 2.31 64.8 42.0
April 4.76 1.06 66.9 43.5
May 5.57 0.28 68.3 46.8
June 5.58 0.05 70.6 50.1
July 5.58 0.03 72.8 53.1
August 5.12 0.03 73.2 53.6
September 4.30 0.19 74.4 52.2
October 3.56 0.52 73.5 48.1
November 2.33 1.32 69.2 42.6
December 1.75 1.96 64.3 38.7
Notes

1. Evapotranspiration (ETo) Report for Santa Maria from http://www.cimis.water.ca.gov

2. Rainfall and Temperature data from http://www.wrcc.dri.edu Figure 3-4. Monthly Average Temperature Range in Santa Maria based on 69 Years Historical Data CHAPTER THREE: SERVICE AREA DESCRIPTION
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Figure 3-5. Monthly Average Precipitation in Santa Maria based on 69 Years Historical Data This space is intentionally blank.

CHAPTER FOUR: WATER USE CHARACTERIZATION
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Chapter 4. Water Use Characterization

4.1 Customer Connections
The City provides water for residential, commercial, industrial, and landscape irrigation customers. Figure 4-1, below, shows the number of connections by customer category. Most connections are classified as single-family residential. From 2020 to 2025, the total number of connections increased from 22,888 to 23,273.

Figure 4-1. Customer Connections (2025)

4.2 Current and Projected Water Use
Water usage data from 2025 was analyzed to estimate the City’s future water use. Past water use is not necessarily indicative of future water use due to water use changes brought about by conservation, such as turf removal and low-flow fixtures. Projections for future water use were calculated for the years 2030 through 2050 in fiveyear increments. Future water demands were estimated using a population-based approach.

Water use records from 2025 were sorted by customer type into the following categories: single-family, multifamily, commercial, industrial, landscape, sales to other agencies, losses, and a category for “other” uses. Table 4-1 shows 2025 water use data by category and Table 4-2 shows projected water uses for years 2030 through 2050. These projections are based on population growth and the 2025 per capita water usage of 89 GPCD calculated from the City’s water consumption and population.

Water use projections assume future growth of residential single family, residential multi-family, and landscape use types will conform with requirements for reduced indoor water use and reduced landscape demand consistent with requirements to meet the City’s Urban Water Use Objectives (UWUO).

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Table 4-1. 2025 Water Uses
(DWR Submittal Table 4-1)
Submittal Table 4-1 Retail: 2025 Actual Total Uses for Potable and Non-Potable Water Water Code Section 10631(d)(1)
Use Type
Additional Description
(as needed)
2025 Actual Water Use
Level of Treatment
When Delivered
(OPTIONAL)
Volume
(AF)
Single Family Potable 5,137
Multi-Family Potable 2,027
Commercial Potable 2,171
Industrial Potable 375
Landscape Potable 1,092
Other (optional) Flushing, Sweeping, Vactor
Trucks (unbilled metered) Potable 71
Sales/Transfers/Exchanges
to other Suppliers Nipomo CSD Sale Potable 1,511
Sales/Transfers/Exchanges
to other Suppliers GSWC Exchange Potable 20
Distribution System Water
Loss Potable 286
Subtotal Potable 12,689
Subtotal Non-Potable 0
Total 12,689
NOTES: Loss = water produced + water imported - water exported - metered water This space is intentionally blank.

CHAPTER FOUR: WATER USE CHARACTERIZATION
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Table 4-2. Projected Water Uses
(DWR Submittal Table 4-2)
Submittal Table 4-2 Retail: Total Uses of Potable, and Non-PotableWater - Projected Water Code Section 10631(d)(1)
Use Type
Additional Description
Projected Water Use
2030 2035 2040 2045 2050 (opt)
(AF) (AF) (AF) (AF) (AF)
Single Family 5,365 5,574 5,777 5,855 5,929
Multi-Family 2,116 2,199 2,279 2,310 2,339
Commercial 2,273 2,375 2,477 2,515 2,550
Industrial 393 410 428 434 440
Landscape 1,140 1,185 1,228 1,245 1,260
Other (optional) Flushing, Sweeping, Vactor
Trucks 46 48 50 51 52
Sales/Transfers/Exchanges to other Suppliers Nipomo CSD Sale 2,500 2,500 2,850 3,200 3,200 Sales/Transfers/Exchanges to other Suppliers GSWC Exchange 20 20 20 20 20 Distribution System Water Loss 329 344 358 364 369
Subtotal Potable 14,182 14,655 15,469 15,993 16,159
Subtotal Non-Potable 0 0 0 0 0
Total 14,182 14,655 15,469 15,993 16,159
NOTES: Growth projections based on SBCAG population growth rate distributed among all categories except for "to other Suppliers." Residential and Landscape categories are adjusted to account for UWUO criteria as applied to projected growth, see DWR Submittal Table 4-4 in Appendix C.

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4.3 Lower Income Projected Water Demands
The estimated lower income water use projections for single-family and multi-family housing units are presented in Table 4-3. These projections are included in the overall water use projections provided in Table 4-2.

Per 2024 US Census data, approximately 15.5% of households in Santa Maria belong to the lower income group (United States Census Bureau, 2024). The previous UWMP reported this figure as 18%. To be conservative and over plan for lower income projected water demands, and in accordance with State Code, 18% of the projected water demands were assumed to be for households in the lower income group.

Table 4-3. Lower Income Projected Water Demands (AF) for City of Santa Maria Lower Income Water Demands 2030 2035 2040 2045 2050
Single family residential 966 1,003 1,040 1,054 1,067
Multi-family residential 381 396 410 416 421
Total 1,347 1,399 1,450 1,470 1,488
Table 4-4. Inclusion of Savings and Lower Income Projections (DWR Submittal Table 4-3)
Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) Are Future Water Savings Included in Projections? 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.

OPTIONAL Suppliers may complete Optional Submittal Table 4-4 R to quantify the expected savings.

See UWMP Section

4.2 and 4.6 and
DWR Submittal
Table 4-4 in
Appendix C.

Are Lower Income Residential Demands Included In Projections? Yes OPTIONAL If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found.

See UWMP Section

4.3 and Table 4-3
(Page 4-4)
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4.4 Transfers and Sales to Other Water Agencies
The City’s water portfolio includes three distinct transfers and sales to other water agencies, as follows:

1. Orcutt Area Groundwater Leases. Long-term groundwater rights leases to the Orcutt Area which are delivered through lessee groundwater pumping and are tracked by decreasing the City’s groundwater entitlement by 900 AF per year (“YR”). The Orcutt Area water leases are a long-term lease of water rights and do not affect the City’s water infrastructure.

2. GSWC Potable Water Exchanges. There are two parts to this transfer: 1) The City accepts delivery of GSWC’s State Water Project water on their behalf and delivers that water to GSWC’s distribution system. This transfer of water is not accounted for in the UWMP since the water comes from GSWC’s supply and is used in GSWC’s service area. 2) The City delivers 20 AF/YR to GSWC which is documented in the UWMP as a demand.

3. Nipomo Community Services District (“NCSD”) water sales. Water sales to NCSD involve potable water delivery and use of the City’s water supply infrastructure. The agreement between NCSD and the City requires that the City deliver, and NCSD pay for, a minimum 645 AF for the first year of delivery (Fiscal Year 2015-2016); 800 AF for years 2 through 5 (FY 2016-2020); 1,000 AF for years 6 through 10 (FY 2020-2025); and 2,500 AF from year 11 (FY 2025-2026) through June 30, 2085. NCSD can request up to an additional 3,200 AF per year in accordance with the Wholesale Water Supply Agreement dated 05/07/2013 between the City of Santa Maria and NCSD. Projections assume NCSD request an additional 350 AF per year in 2040 and 700 AF per year in 2045 and beyond.

The City’s projected sales to NCSD and transfer of 20 AF/YR to GSWC are included as a portion of the City’s total uses in Table 4-2.

4.5 Additional Water Uses and Losses
Water losses must be incorporated when projecting total water demand. In the UWMP, water losses are defined as the difference between annual production and annual authorized consumption. This includes system losses due to leaks, reservoir overflows, inaccurate meters, unauthorized use, and unmetered water used in operations.

System water losses were calculated using American Water Works Association (AWWA) Free Water Audit Software. The software uses inputs from volume of water supplied/produced, metered volume of water consumed, estimated unmetered water consumed by authorized actions, and metering error estimates among other factors, to calculate apparent and real losses. The Water Audit was submitted for each of the five years preceding this plan update.

The AWWA software assumes an additional 0.25% of the total volume supplied is used for authorized, unmetered activities such as line flushing and firefighting.

The difference between volume supplied/produced and volume metered for consumption plus the unmetered consumption is the calculated loss. In the Water Audit, this value is then broken into apparent loss, caused by metering errors and data handling inaccuracies, and real loss, leakage and unauthorized, unmetered water consumption.

Table 4-5 and Table 4-6 show status of AWWA water loss audits and total water loss calculated by AWWA software in each of the already submitted audits to the DWR. Copies of the 2024 AWWA Audit Tables are presented in Appendix B.

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Table 4-5. Water Loss Audit Reporting
(DWR Submittal Table 4-5)
Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
Public Water
System ID #
CA4210011
Reporting Period Submitted to DWR Water Loss Audit
Program (yes/no)
2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
NOTES – Links to WUEdata submittals of Santa Maria Water Loss Audit Reports:
- https://wuedata.water.ca.gov/secure/uploads/7812040030/2024%20CA4210011%20City%20of%20Santa%20 Maria%20Water%20Audit.xlsx
- https://wuedata.water.ca.gov/secure/uploads/9702787101/2023%20CA4210011%20City%20of%20Santa%20 Maria%20Water%20Audit.xlsx
- https://wuedata.water.ca.gov/secure/uploads/9145917594/2022%20CA4210011%20City%20of%20Santa%20 Maria%20Water%20Audit.xlsx
- https://wuedata.water.ca.gov/secure/uploads/2751698136/2021%20City%20of%20Santa%20Maria%204210 011%20Water%20Audit.xlsx
- https://wuedata.water.ca.gov/secure/uploads/2505780875/2020%20City%20of%20Santa%20Maria%204210 011%20Water%20Audit.xlsx
Table 4-6. Water Loss Volume from Audits (2020-2025)
Reporting Period Volume of Water Loss (AF)
2020 352.07
2021 260.94
2022 270.15
2023 542.36
2024 547.77
2025 286.19
Average 376.58
Note: 2025 Water Audit is preliminary and subject to change.

4.6 Estimating Future Water Savings
The City of Santa Maria has adopted ordinances to reduce water waste as described in Chapter 8 and Chapter

9. The City also met its 2020 per capita goal per Senate Bill (SB) X7-7, as described later in Chapter 5, and has met this goal every year since. The City has met the State Water Board’s 2028 Water Loss Standard, as shown in Table 4-7 and Table 4-8, shown on the next page.

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Table 4-7. Summary of Progress Toward 2028 Real Water Loss Standard (DWR Submittal Table 4-6)
Submittal Table 4-6a Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
Public
Water
System ID #
Real Water Loss
State Water Board Standard Most Recent AWWA Water Loss Audit Real Water
Loss Per
Unit per
Day
2028 Real
Water Loss
Standard per
Unit per day
Units for Real
Water Loss
Number of Units
(Connections)
Volume of Total Real
Loss (from AWWA
Water Loss Audit)
(AF)
CA4210011 10.4
Gallons per
Service
Connection per
Day (GPSCD)
23,799 229.318 8.6
Table 4-8. Summary of Progress Toward 2028 Apparent Water Loss Standard (DWR Submittal Table 4-6)
Submittal Table 4-6b Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
Public
Water
System ID #
Apparent Water Loss
State Water Board Standard Most Recent AWWA Water Loss Audit Apparent
Water Loss
Per Unit
per Day
2028
Apparent
Water Loss
Standard per
Unit per Day
Units for
Apparent
Water Loss
Number of
Connections
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
CA4210011 5.9
Gallons per
Service
Connection per
Day (GPSCD)
23,799 54.008 2.0
Water savings from codes, standards, ordinances, or transportation and land use plans are also known as “passive savings.” These various factors generally decrease the water use for new and future customers, compared to historical customers. These codes and ordinances may include implementation of city ordinances, the California Energy Commission Title 20 appliances standards for toilets, urinals, faucets, and showerheads, and the CALGreen Building Code.

Passive savings have been incorporated into projected water demands for future residential and landscaping growth only. Future residential and landscaping demands were reduced by 5.7% compared to 2025 use in 2030, by 9.6% for 2035, and 11.7% for 2040 and beyond. This reduction represents incorporation of Urban Water Use Objectives and indoor water use budgets. Water demands are projected based on projected population growth , as documented in Chapter 5, and discussed above. The City expects that passive savings, such as continued implementation of city ordinances/codes and new building standards will help the City continue to meet its target per capita water demand in the future.

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4.7 Climate Change Impacts to Water Demands

4.7.1 General Information
DWR guidelines require urban water suppliers to consider the potential effects related to climate change in the UWMP as it relates to water demands, water supply, and water supply reliability. These topics are addressed in Chapter 4, Chapter 6, and Chapter 7 of the UWMP, respectively. Climate change model projections indicate that California in general can expect to be impacted by the following:
• Increased temperatures
• Changes in the timing and quantity of precipitation
• Increased risk of wildfires
• Increased risk of flooding, and
• Sea-level rise
The Santa Barbara County Integrated Regional Water Management Plan (IRWMP, 2019, Dudek) presented a summary of climate change findings from various studies and models, which is included in Table 4-9..

Table 4-9. Impacts of Climate Change on the Region by Mid-Century.

4.7.2 Impacts to Water Demands
The IRWMP identifies the primary effect expected from climate change in the future is an increase in average global temperature. By end of this century, temperatures in the Central Coast area are projected to increase 4°– 5°Fahrenheit during the winter and 5°–6°Fahrenheit during the summer. Increases in temperature may be expected to impact water resources through changes to precipitation patterns, evapotranspiration rate increases, increased customer water use, increased wildfire potential, and faster snowmelt.

The IRWMP also noted the frequency of extreme hot days was also projected to increase significantly from 3 to 4 extreme hot days in the historical period (1985–2014), 6 to 10 extreme hot days by 2030, 9 to 18 extreme hot days by 2050, and 23 to 43 extreme hot days by 2090.

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As climate change becomes noticeable and quantifiable, the City’s response will include reducing demands to match possible reduction of water supplies. At this point, impacts from possible climate change are not quantifiable. Reduction of the per capita demands in the system can help respond to climate change in two ways. Reduced water demands equate to less energy use through reduced groundwater pumping and/or movement of water supplies through the system. Further reduction of per capita water demands may be challenging to achieve, as the City has already implemented many demand management or conservation methodologies (discussed in further detail in Chapter 9).

It is anticipated that climate change will result in increase in temperatures and more hot days will impact landscape water demands; however, as the City has a goal to maintain per capita use, overall water demands are not anticipated to increase. Temperature rises will translate to increased evapotranspiration rates. Mitigating possible increased water demands for landscape may require less landscaping, increased use of drought tolerant plantings, or more efficient irrigation strategies. The City has landscaping policies in place to encourage water conservation in new developments as discussed in Chapter 9.

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CHAPTER FIVE: SB X7-7 BASELINES, 2020 TARGETS, AND 2025 REPORTING 2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 5-1 09/03/2026
Chapter 5. SB X7-7 Baselines, 2020 Targets, and
2025 Reporting

5.1 Baseline and Targets
Regulations require that water suppliers quantify past and current water use and project the total water demand for the water system, including calculations of its baseline water use (i.e., base daily per capita use) and interim and urban water use targets. Projections of future water demand allow a water supplier to analyze if future water supplies are adequate, as well as help the agency when sizing and staging future water facilities to meet water use targets. Projected water use, combined with population projections, provides the basis for estimating future water requirements. The SB X7-7 spreadsheet tables used to document this analysis are found in Appendix C.

The goal of this chapter is to report the City’s progress toward meeting urban water-use targets, pursuant to Water Code Section 10608.40, as established by SB X7-7. As demonstrated in the following sections of this chapter, the City has met its SB X7-7 urban water-use targets.

5.1.1 Baseline Water Use
Baseline values were determined per DWR methodologies included in the Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (California Department of Water Resources, 2016).

Target conservation is based on baseline water use. As the City does not provide at least 10% of its water supply as recycled water, calculations are needed for both a ten-year period and a five-year period to fully evaluate the baseline and targets consistent with DWR methodologies.

The ten-year baseline period used for the analysis is January 1, 1995 through December 31, 2004. The five-year baseline period used for the analysis is January 1, 2003 through December 31, 2007. Table 5-1 summarizes the baseline periods for the City.

Table 5-1. Summary of Base Period Ranges of the City of Santa Maria Base Parameter Value Units
10- to 15-year Base
Period
2008 Total Water Deliveries
2008 Total Volume of Delivered Recycled Water
2008 Recycled Water as a percent of Total Deliveries
Number of Years in Base Period
Year beginning Base Period Range
Year ending Base Period Range
14,472
0 0
10 1995
2004
AF
Years
5-year Base Period Number of Years in Base Period
Year beginning Base Period Range
Year ending Base Period Range
5 2003
2007
Years
CHAPTER FIVE: SB X7-7 BASELINES, 2020 TARGETS, AND 2025 REPORTING 2025 URBAN WATER MANAGEMENT PLAN
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5.1.2 Water Use Targets
Method 1 described in the 2020 Guidebook to set 2015 interim and 2020 water use targets uses 80% of the baseline per capita water use to calculate the 2020 water use target.

Table 5-2 lists historic population and per capita water use for the 10-year base period. The base per capita water use estimate (as an average for 10 base years) was 148 GPCD. Therefore, the 2020 target based on Method 1 is 118 GPCD (80% of 148 GPCD).

Table 5-2. Base Daily Per Capita Water Use (10- to 15-year Range) of the City of Santa Maria Base Period Year Distribution
System
Population
Annual System
Gross Water Use
(AF)
Annual Average
Daily Per Capita
Sequence Year Calendar Year Water Use (GPCD)
Year 1 1995 69,720 13,050 167
Year 2 1996 71,127 12,773 160
Year 3 1997 72,283 12,515 155
Year 4 1998 73,891 11,079 134
Year 5 1999 75,379 11,852 140
Year 6 2000 76,913 12,714 148
Year 7 2001 78,903 12,606 143
Year 8 2002 81,434 13,340 146
Year 9 2003 83,828 13,496 144
Year 10 2004 87,732 13,650 139
Average base daily per capita water use ten-year baseline 148 Table 5-3 lists historic population and per capita water use for the five-year period (2003 to 2007). The average base per capita water use estimated for five base years is 138 GPCD. This data was used to determine whether the 2020 per capita water use target using Method 1, above, met the legislation’s minimum water reduction requirement per § 10688.22.

Table 5-3. Base Daily per Capita Water Use (5-year Range) of the City of Santa Maria Base Period Year Distribution
System
Population
Annual System
Gross Water Use
(AF)
Annual Average
Daily Per Capita
Sequence Year Calendar Year Water Use (GPCD)
Year 1 2003 83,828 13,496 144
Year 2 2004 87,732 13,650 139
Year 3 2005 91,313 13,845 135
Year 4 2006 93,385 13,615 130
Year 5 2007 94,408 14,847 140
Base daily per capita water use five-year baseline 138
CHAPTER FIVE: SB X7-7 BASELINES, 2020 TARGETS, AND 2025 REPORTING 2025 URBAN WATER MANAGEMENT PLAN
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5.1.3 Minimum Water Use Reduction Requirements
Since the five-year baseline per capita water use per § 10608.12(b)(3) was greater than 100 GPCD, the following analysis was used to determine whether the City’s 2020 per capita water use targets met the legislation’s minimum water use reduction requirement per § 10608.22:

1. Used Method 1 to calculate a 2020 per capita water use target. a. Ten-year GPCD: 148 GPCD, as presented in Table 5-2.
b. 2020 target is 80% of ten-year GPCD or 118 GPCD.

2. Used the five-year baseline methodology to determine maximum allowable 2020 per capita water use target: The maximum allowable 95% of the five-year baseline. a. Calculated the five-year baseline of 138 GPCD, as presented in Table 5-3. b. Calculated 95% of 138 GPCD or 131 GPCD.

3. Determined that Method 1 2020 per capita water use target of 118 GPCD was less than maximum allowed target of 131 GPCD; therefore, no further adjustment to the 2020 Target is required.

The 2020 target of 118 GPCD meets the legislation’s water use reduction requirement. The City did not adjust its compliance GPCD using weather normalization, economic adjustment, distribution area expansion, distribution area contraction, or other extraordinary events. The basis for determining these estimates included population estimates from the DOF website (California Department of Finance, 2015) and water production values from the DWR public water statistics, Form DWR 38.

5.1.4 Target Attainment
The per capita water use target for the City for 2020 was 118 GPCD with an interim goal of 133 GPCD by the year 2015 (the interim 2015 goal was calculated as the average of 148 GPCD baseline and 118 GPCD 2020 Target). Figure 5-1 shows the historical and current per capita water use. This figure shows a 2020 water use of 109 GPCD which exceeded the City’s goal of 118 GPCD. The City has continued water conservation measures, and the 2025 figure is 89 GPCD. As illustrated in Figure 5-1, the City has had a consistent decline in per capita water usage over the past thirty years which can be attributed to a successful water conservation program. Table 5-4 summarizes the City’s progress toward meeting the SBX7-7 2020 target.

Table 5-4. SBX7-7 202 Target Progress
(DWR Submittal Table 5-1)
Submittal Table 5-1 Retail: SB X7-7 2020 Target Progress Water Code Section 10608.40
Check the box if the Supplier was not an Urban Water Supplier during or before the 2020 UWMP reporting cycle. Proceed to the next table.

Was Supplier
part of a merger
or consolidation
since 2020?
Regional
Alliance
Target or
Individual
Target?
2020 Target Actual 2020 GPCD
Did Supplier Achieve
Targeted Reduction
for 2020?
No Individual
Target 118 109 Yes
CHAPTER FIVE: SB X7-7 BASELINES, 2020 TARGETS, AND 2025 REPORTING 2025 URBAN WATER MANAGEMENT PLAN
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Baseline (148 gpc/day) 1994-2004
Target 118 (gpc/day) 2020

80.00 90.00
100.00
110.00
120.00
130.00
140.00
150.00
160.00
170.00
1990 1995 2000 2005 2010 2015 2020 2025
GPC/Day
Year
20 X 2020
Annual Water Use per Capita
Figure 5-1. Historical Per Capita Water Use
CHAPTER SIX: NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
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Chapter 6. Normal-Year Water Supply
Characterization

6.1 Water Sources
The City’s water portfolio is comprised of the following available water supply sources: local groundwater, purchased water from the SWP, associated return flows recaptured from the Basin, assigned rights to water from the Basin, and assigned rights to augmented yield from Twitchell Reservoir. Imported water supplies for the City are obtained from the SWP via a contract with CCWA.

Groundwater is pumped from seven active groundwater wells in the Basin. The City’s wells have a current total normal year active capacity of about 13,830 AF/YR. The City is actively working to increase groundwater pumping capacity to access the City’s water rights and increase local resiliency when SWP water is unavailable.

Over the period from 2021 through 2025, the extracted groundwater averaged 8,785 AF/YR. According to the latest annual hydrogeologic report (Luhdorff & Scalmanini, 2025), the groundwater basin continues to remain within historical range.

The local groundwater basin is adjudicated, and therefore, already managed. The City’s rights to rely on Basin water resources for both pumping and storage are governed by a settlement agreement (“Stipulation”) signed by a majority of the parties (Santa Maria Valley Water Conservation District vs. City of Santa Maria, et al., Case No. 770214), commonly known as the “Santa Maria Groundwater Adjudication.” See Appendix A for Stipulation.

Table 6-1 summarizes the current and planned water supplies available to the City between 2025 and 2050.

This water supply information is based on the Stipulation and data provided by CCWA. The City’s water supply is expected to reliably meet the projected demands through 2050.

There is no direct recycled water supply in use currently or planned for this system. All the Wastewater Treatment Plant (“WWTP”) effluent (collected and treated wastewater) is disposed of through percolation ponds at the City of Santa Maria WWTP, which supports recharge of the Santa Maria Valley Groundwater Basin, which in turn, is a source of supply.

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CHAPTER SIX: NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
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Table 6-1. Current and Projected Water Supplies (AF/YR) for the City of Santa Maria (Adapted from DWR Submittal Table 6-9)
Source Total
Entitlement(3)
Reasonably Available Volume
2030 2035 2040 2045 2050
Purchased SWP Water(1) 17,820 9,445 9,088 8,910 8,554 8,197 Groundwater(2) 30,143 19,480 21,740 21,740 21,740 21,740 Total 47,963 28,925 30,828 30,650 30,294 29,937
Notes:

1. SWP Reasonably Available Volume is based on Draft DCR 2025 and data provided by CCWA, see Table 7-1.

2. Groundwater supplies are comprised of return flows, prescriptive rights, and Twitchell rights. a) Pursuant to the Stipulation, the City is entitled to recapture 65 percent of its SWP use in the Basin as Return Flows. Return flows are calculated as 65% of the Reasonably Available Volume of SWP water. b) The City's prescriptive rights are defined pursuant to the Court’s Phase 5 Statement of Decision, in which the City has been assigned 5,100 AF/YR of prescriptive right. c) Further details regarding Twitchell supply can be found in Exhibit “F” of the Stipulation and are accounted as 14,360 AF/YR.
d) Groundwater entitlement has been reduced by 900-AF to account for long-term groundwater leases to the Orcutt Area.
e) Groundwater reasonably available volume is limited by well capacity. Total well capacity is estimated at 13,830 AFY in 2025, 19,480 AFY in 2030 and 21,740 AFY in 2035.

3. “Total Entitlement” does not account for SWP reliability or groundwater pumping limitations, but does subtract 900-af to account for Orcutt Area groundwater leases.

The City’s water supply is projected to remain sufficient from 2025 to 2050 and is expected to exceed its water demands.

6.1.1 City Production Facilities
Figure 6-1. shows the location of the City’s production facilities. The City measures flow at each of its production facilities using meters. The City field calibrates production meters once annually. Flow is continuously measured through the City’s supervisory control and data acquisition system, and data is stored in a database. Production is calculated by averaging flow every five minutes.

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CHAPTER SIX: NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
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Figure 6-1. City of Santa Maria Production Facilities
CHAPTER SIX: NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
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6.2 Wholesale Supplies
Santa Maria has a Water Supply Agreement with CCWA for 17,820 AF/YR of imported SWP water (16,200 AF basic entitlement plus a “drought buffer” equal to 10% of the basic entitlement). SWP water originates within the Feather River watershed, is captured in Lake Oroville, and flows via the Sacramento-San Joaquin Delta, the California Aqueduct (“Aqueduct”), and the Coastal Branch Extension, into CCWA’s treatment and conveyance facilities.

Pursuant to the Stipulation, Santa Maria agreed to import and use 10,000 AF/YR of available SWP water, or the full amount of available SWP water (yearly allocation) if the amount available is less than 10,000 AF.

Table 6-2 presents the contracted volumes available from CCWA to the City per Table A imported SWP water and the amount projected to be available to the City to meet the demands from 2030 through 2050. The average long-term reliability factors presented in Section 7.1 were used to determine reasonably available purchased water from CCWA. Appendix D contains CCWA-provided future projections of the volume of water to be delivered to the City.

Table 6-2. Wholesale Supplies – Existing and Planned Sources of Water (long-term average) (Adapted from DWR Submittal Table 6-9)
Wholesale Sources Contracted
Volume 2030 2035 2040 2045 2050
Purchased Water from SWP 17,820 9,445 9,088 8,910 8,554 8,197

6.3 Return Flows
Under the Stipulation, the City is entitled to groundwater that is considered return flows at 65% of the fiveyear rolling average amount of SWP water it imports to the Basin. These return flows augment the groundwater yield in the Basin through the recharge that occurs when these sources are used within the Basin.

6.4 Groundwater
Groundwater for the City is supplied by seven active wells in the Basin. The Basin has a surface area of approximately 184,000 acres, or 287.5 square miles. The Basin is bounded by the San Luis and Santa Lucia Ranges on the north, by the San Rafael Mountains on the east, by the Solomon Hills on the south, by the Casmalia Hills on the southwest, and by the Pacific Ocean on the west.

The water-bearing units are alluvium, dune sands, and the Orcutt, Paso Robles, Careaga, and Pismo Formations.

The alluvium consists of unconsolidated lenticular bodies of gravel, sand, silt, and clay. The dune sands consist of well-rounded, fine- to coarse-grained sand. The Orcutt Formation consists of sand interbedded with coarse gravel with minor amounts of silt and clay restricted to the upper parts of the unit. The Paso Robles formation consists of unconsolidated to poorly consolidated gravel, sand, silt, and clay. The Careaga Formation consists of unconsolidated fine- to medium-grained marine sand with some silt and unconsolidated to well consolidated coarse- to fine-grained sand, gravel, silty sand, silt, and clay. The Pismo formation consists of coarse- to finegrained sand interbedded with discontinuous layers of silt and clay. Groundwater is generally unconfined, except in the coastal portions where it is confined (Luhdorff & Scalmanini, 2025).

Sources of native (natural) water to the groundwater basin include the following: infiltration of precipitation, inflow from adjacent areas, return flows from applied water (irrigation), percolation of water from streams flowing across the Basin, especially the Arroyo Grande Creek on the north and Santa Maria and Sisquoc Rivers in the south. In addition, two reservoirs, Lopez Reservoir on the Arroyo Grande Creek in the north, and CHAPTER SIX: NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
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Twitchell Reservoir on the Cuyama River (a tributary to the Santa Maria River in the south), provide storage of stormwater for recharge of the Basin.

Water from the Lopez Reservoir is used directly by the coastal communities of Arroyo Grande, Pismo Beach, Grover Beach, and Oceano Community Services District, some return flows from irrigation recharges the groundwater basin locally. Reservoir releases are made to provide for groundwater recharge through the bed of the Arroyo Grande Creek into the groundwater basin underlying the Arroyo Grande area.

The Twitchell Reservoir operates as a flood control and water conservation reservoir. Releases are controlled from Twitchell Reservoir to maximize recharge of the Basin through percolation in the Santa Maria Riverbed.

The Stipulation sets the amount of the Twitchell yield at 32,000 AF/YR. The City is entitled to 14,360 AF of that yield annually.

Groundwater discharges from the Basin include consumptive use of groundwater by agricultural, domestic, municipal, and industrial users, as well as groundwater discharges to the ocean. Groundwater discharge to the ocean is required to prevent seawater intrusion into the Basin.

The total groundwater storage capacity of the Basin is approximately 2,300,000 AF (California Department of Water Resources, 2004). The large volume of groundwater in storage provides a buffer to drought conditions in the Basin.

6.4.1 Developed Basin Supplies
Since 1997, SWP water has been imported to the Basin by Oceano Community Services District and Pismo Beach in the north and the City of Santa Maria, the City of Guadalupe, and GSWC in the south. The importation of this water has reduced the stress on the Basin through a reduction in groundwater pumping by those parties relying instead on SWP water. Groundwater recharge is also augmented by the return flows of imported waters through irrigation and wastewater discharges to percolation ponds.

6.4.2 Stipulated Judgment and Water Rights
In 1997, the Santa Maria Valley Water Conservation District (“SMVWCD”) filed a lawsuit to adjudicate water rights in the Basin (Santa Maria Valley Water Conservation District vs. City of Santa Maria, et al., Case No. 770214 (Superior Court of the State of California, County of Santa Clara, June 30, 2005)). The court divided the trial into phases. In January 2001, the Court issued the Phase 1 Order, which established the outermost boundaries of the Basin. In December 2001, the Court issued the Phase 2 Order, which established the area constituting the Basin for purposes of the adjudication.

In May 2004, the Court issued a Partial Statement of Decision on Phase 3 regarding the hydrologic conditions in the Basin. As part of its Phase 3 Partial Statement of Decision, the court reserved jurisdiction over remaining water rights issues and management of the Basin.

Subsequent to the Phase 3 trial, the majority of the parties to the lawsuit, including the original plaintiff, the SMVWCD, negotiated a settlement agreement (referred to as the “Stipulation” throughout this document) that set forth terms and conditions for a physical solution concerning the overall management of Basin water resources, including rights to use groundwater, SWP water and associated return flows, the developed groundwater yield resulting from the operation of Twitchell and Lopez reservoirs, use of Basin storage space, and the ongoing monitoring and management of these resources consistent with common law water rights priorities and Article 10, Sec. 2 of the California Constitution. The Stipulation has been signed by a majority of overlying landowners in the Basin.

The Stipulation also subdivides the Basin into three Management Areas: the Northern Cities Management Area, Nipomo Mesa Management Area, and the Santa Maria Valley Management Area (Exhibit “C” of the Stipulation CHAPTER SIX: NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
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contains a map of these management areas). The delineation of these areas was based on historical development and use of Basin water resources, as further delineated in the Stipulation and the record of the Court.

As noted above, the Stipulation provides the City certain rights to water in the Basin. These rights include a recognition of the City’s highest historical use of groundwater from the Basin; the right to recapture a preset portion of the return flows from the City’s import of SWP water to the Basin; and a right to 14,360 AF/YR of developed groundwater yield resulting from Twitchell Reservoir recharge operations. In addition, the City may access additional supply through the transfer of Twitchell Yield. Return flows from SWP water are also assignable in whole or in part, subject to accounting.

The Stipulation also establishes certain preset water shortage response measures in anticipation of reduced availability of groundwater.

Although the Court has approved the Stipulation as between those who have signed it, not all parties to the adjudication have agreed to it. Phase 4 proceeded to trial in early 2006 between the public water suppliers, including the City, and a small number of landowners that opposed the Stipulation. The Phase 4 statement of decision issued by the Court stated that the City and GSWC met the burden of showing a prescriptive right during various periods prior to the time that the Twitchell Project began recharging the Basin.

Phase 5 occurred in July of 2006. The scope of the Phase 5 trial was to allow the remaining landowners to show that they had engaged in self-help during the applicable prescriptive periods and to determine whether, and in what form, the Court should impose a physical solution on the parties’ collective future use of the Basin.

The Phase 5 statement of decision reaffirms the prescriptive rights obtained by the City and GSWC; states that those rights are correlative to the rights of the overlying landowners; and provides that the City and GSWC are entitled to those specific quantities of water in the Basin, the same as any overlying landowner. The statement of decision also states that the monitoring program contained in the Stipulation will be incorporated into the Court’s final judgment and will be binding on all parties to the litigation. Further, the Phase 5 statement of decision provides that the Court will retain jurisdiction to enforce the judgment and to implement the physical solution as necessary. The Phase 5 statement of decision further confirms the allocation of Twitchell Yield in the manner provided in the Stipulation.

The Santa Maria Basin Monitoring and Management Program was prepared in 2008 to provide the fundamental data for ongoing annual assessments of groundwater conditions, water requirements, water supplies, and water disposition in the Santa Maria Valley Management Area (Luhdorff & Scalmanini, 2014) to ensure that the Basin is protected and managed as a source of water for beneficial uses.

6.4.3 Existing and Projected Groundwater Use
As described above, the Stipulation provides the City certain water rights within the Basin including, but not limited to, appropriative rights to Native Groundwater and the right to New Developed Water. In addition, the City has rights to Twitchell Development Water, return flows of its imported water, and prescriptive rights as defined in the Court’s Phase 5 Statement of Decision.

Table 6-3 presents the City’s water rights of Twitchell Development Water, prescriptive rights, and return flows of its imported water. The available return flow to the City is calculated on the average quantity the City imports in the previous five years. The return flow quantity in this table is based on the reliable amount of SWP water supplies as reported by CCWA in Table 6-2.

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Table 6-3. Groundwater Pumping Rights
Santa Maria River Valley Pumping Rights (AF/YR)
Twitchell Yield(1) 14,360
Native Groundwater/Prescriptive Rights(2) 5,100
Average Return Flows of Imported Water(3) 5,328 – 6,139 Set Aside for Orcutt Area Long-Term Leases (900)
Notes:

1. Further details can be found in Exhibit “F” of the Stipulation.

2.Groundwater supplies are based on prescriptive rights in Santa Maria Groundwater Basin as defined in the Judgement. Pursuant to the Court’s Phase 5 Statement of Decision, the City has been assigned 5,100 AF/YR of prescriptive rights.

3.Return flows from 2030 through 2050 are based on the projected amount of the City’s contract for annual imported water deliveries presented in Table 6-1. Available return flows may be less if the total amount of imported water is not available.

Table-6-4 shows the City’s wells and current well capacities. The City’s current well system has a total production capability of about 12,250 gallons per minute (“GPM”) or about 17.6 million gallons per day (“MGD”).

Table-6-4. Wells and Well Capacity in the City of Santa Maria System Well Name Nominal Well Capacity
(GPM) (rounded)
Nominal Well Capacity
(AF/YR)
Status
6S 950 1,070 Active
9S 1,600 1,810 Active
10S 1,600 1,810 Active
11S 2,000 2,260 Active
12S 2,100 2,370 Active
13S 2,000 2,260 Active
14S 2,000 2,260 Active
Total Capacity 12,250 13,830
Note: Nominal Well Capacity assumes 70% uptime for the well over the course of a year.

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Table 6-5 shows the City’s groundwater pumping history for calendar years 2021 to 2025. The groundwater was pumped from six active wells located in the Basin (Well 6S was brought back online in early 2026). The City’s use of groundwater since 1997 has been reduced as the City increased its use of SWP water. Groundwater use increased in 2021 and 2022 due to reduced SWP water allocation.

Table 6-5. Groundwater Pumping History 2021-2025
(DWR Submittal Table 6-1)
Basin Name 2021 2022 2023 2024 2025
Santa Maria River Valley (AF) 10,224 11,010 7,593 7,840 7,260 Percent of Total City Water Supply 86% 97% 68% 70% 65%
Table 6-6 shows the projected groundwater pumping amounts for the City, assuming the City imports the expected available SWP water and uses groundwater pumping to meet the remaining projected demand. As a comparison, the average of the last five years of pumping was 77% of supply. The water will be pumped from the City’s seven active wells or from new or replacement wells as may be required to meet existing and projected demands. The groundwater pumping amounts include water sources described in the Stipulation and Judgement. These sources consist of Twitchell Yield, prescriptive and appropriative rights to groundwater, and return flows from imported SWP water.

Table 6-6. Projected Groundwater Pumping Amounts by the City of Santa Maria from 2030 to 2050 Basin Name 2030 2035 2040 2045 2050
Santa Maria River Valley (AF) 4,738 5,567 6,559 7,440 7,961 Percent of Total City Water Supply 33% 38% 42% 47% 49%
Note: Pumping projection is based on City projected use from Table 4-2.

6.5 Transfers and Exchanges
The Stipulation and Judgement provide the City with quantifiable and certain water rights. The Stipulation also establishes a framework for both permanent and temporary transfers of water rights within the Basin. Because the City has obtained quantifiable water rights, the City has greater flexibility in facilitating transfers and exchanges. The Stipulation allows permanent or temporary transfer of the developed groundwater yield associated with the operation of the Twitchell Project. The Stipulation also allows temporary transfers of agricultural pumping rights (fallowing programs) during Severe Water Shortage Conditions. These assignments are summarized in Table 6-7.

As described above, these are mechanisms that could augment the reliability of supplies during a dry period.

For example, water available through transfers and exchanges with other State Water Contractors, purchases of water through DWR dry-year water purchase programs, short-term water transfers through DWR’s Turnback Pool programs, and groundwater banking programs operated by some CCWA project participants.

In any given year, additional water can be made available through the SWP system for the incremental cost of purchasing or exchanging the water from others in the SWP.

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Table 6-7. Transfer and Exchange Opportunities
Transfer Agency Transfer or Exchange Short Term or
Long Term
Proposed
Volume
Twitchell Management Authority TBD(1) TBD TBD
CCWA TBD(2) TBD TBD
Notes:

1. Transfers and exchanges under these programs will occur on an as-needed basis.

2. Includes all exchanges, transfers, or purchased water delivered via CCWA infrastructure.

6.6 Desalinated Water Opportunities
The reliability of water supply for the City could be further augmented by the desalination of brackish water and seawater.

6.6.1 Brackish or Groundwater Desalination
CCWA and its project participants, including the City of Santa Maria could coordinate with other SWP Contractors and provide a mechanism for financial assistance in construction of regional groundwater desalination facilities. A list summarizing the groundwater desalination plans of other SWP Contractors is not available; however, CCWA could begin this planning effort should the need arise.

6.6.2 Seawater Desalination
CCWA was specifically formed for the purpose of “designing, building, and operating the facilities needed to deliver water from the SWP to the various entities entitled to receive that water in Santa Barbara County,” (Central Coast Water Authority, 2011). CCWA and its project participants could collaborate in the use and/or construction of seawater desalination facilities, however, CCWA does not consider desalination to be a costeffective method of increasing the reliability of imported water. Only one CCWA project participant has desalination facilities. The City of Santa Barbara produces approximately three million gallons per day from its desalination facilities.

CCWA has been following the existing and proposed seawater desalination projects along California’s Coast.

The Seawater Desalination and the California Coastal Act (California Coastal Commission, 2004) provides a summary and status of the existing and proposed seawater desalination plants along California’s Coast.

Currently, most of those existing and proposed seawater desalination facilities would be operated by agencies that are not SWP Contractors (see CCWA’s 2020 UWMP for details), and there are currently no specific opportunities identified for using desalinated water as a source of water supply for the City of Santa Maria.

San Luis Obispo County initiated the Desalination Executable Solution and Logistics (DESAL) project in early 2025. The DESAL project is evaluating the feasibility of constructing a desalination facility to serve areas of San Luis Obispo County. Some of the participants in the DESAL project are SWP recipients and San Luis Obispo County is a SWP Contractor. There are approximately 18 current participants including Santa Barbara County, San Luis Obispo County, Nipomo Community Services District, Oceano Community Services District, and Golden State Water Company (County of San Luis Obispo, 2026).

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6.7 Recycled Water Opportunities
The City does not currently use -and has no plans to use- recycled water in the near future. Instead, the City’s treated wastewater discharges to ponds that percolate into the subsurface and recharge the groundwater basin as return flows. These return flows and recharge to the groundwater basin also serve to help protect against seawater intrusion.

The Santa Barbara County Board of Supervisors directed that the County Water Agency study local water supply options, including recycled water supplies. This project took approximately one year to complete and was received by the Board of Supervisors in December 2015. The City coordinated with the County Water Agency in this effort. An excerpt from the Santa Barbara County Long Term Water Supply Report containing Section 4.2 Regional Recycled Water is included as Appendix E.

The City’s upcoming Wastewater Treatment Plant Master Plan includes an evaluation of the feasibility of implementing recycled water for the City. That evaluation will show that implementation of a recycled water program is neither necessary, due to the favorable and diversified water supply that the City has, or economically feasible, due to the high construction cost and the low cost of water utilized by the farmers. The recommendations of prior studies are still applicable.

6.7.1 Wastewater Quantity, Quality, and Current Uses
The Utilities Department operates the water system and the wastewater system for the City. No other local water, wastewater, groundwater, or planning agency operates within the City’s service area; see Table 6-8 for WWTP information.

Table 6-8. Wastewater Collected within Service Area in 2025 (DWR Submittal Table 6-2)
Submittal Table 6-2 Retail: Wastewater Collected Within Service Area in 2025 Water Code Section 10633(a)
100% Percentage of 2025 service area served by wastewater collection system (OPTIONAL)
Wastewater Collection Recipient of Collected Wastewater Name of
Wastewater
Collection Agency
Wastewater
Volume
Metered or
Estimated?
Volume of
Wastewater
Collected from
UWMP Service
Area 2025
Name of Wastewater
Treatment Plant (WWTP)
and Place ID Number
Is WWTP
Located Within
UWMP Area?
(AF)
City of Santa Maria Metered 6,855 City of Santa Maria
WWTP, Place ID 255678 Yes
Total Wastewater Received from
UWMP Service Area in 2025: 6,855
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A per capita wastewater generation factor was calculated based on the volume of wastewater currently generated by the customers in the City’s wastewater system. The per capita wastewater generation for the City service area is approximately 55 GPD. This per capita wastewater generation factor was used to estimate projected volumes of wastewater collected and treated in the City, as shown in Table 6-9. The City does not supply recycled water to its customers. However, under the Stipulation, the City receives credit for the return flows of the water imported through the SWP.

Table 6-9. Current and Projected Wastewater
(Adapted from DWR Submittal Table 6-3)
Type of Wastewater 2025 2030 2035 2040 2045 2050
Projected population in
service area 112,208 117,482 122,768 128,047 129,968 131,788 Wastewater collected
and treated in service
area, all wastewater is
discharged to percolation
ponds as secondary,
undisinfected water
6,855 AF
(6.12 mgd)
7,177 AF
(6.41 mgd)
7,500 AF
(6.70 mgd)
7,823 AF
(6.98 mgd)
7,940 AF
(7.09 mgd)
8,051 AF
(7.19 mgd)
Volume that meets
recycled water standard N/A N/A N/A N/A N/A N/A
The City disposes of its treated wastewater through percolation ponds under its Waste Discharge Requirements permit. The City plans to continue with its current method of wastewater disposal, as it provides the City groundwater rights for return flows and helps protect the Basin from seawater intrusion.

6.7.2 Potential Use
There are no existing recycled water customers in the City’s system. No viable recycled water users have been identified within the City’s service area. Under the Stipulation, the City receives credit for the return flows of imported water into the Basin.

6.7.3 Optimization and Incentives for Recycled Water Use Because the City maximizes the use of return flows from imported water, there are no plans to provide recycled water. All of the City’s wastewater effluent percolates into the local groundwater table for natural reuse. No additional financial incentives will encourage the use of recycled water, as local farmers are not limited in the use of groundwater wells to extract their groundwater supply. As such, it is not cost-effective or efficient to treat and distribute recycled wastewater for their use. Therefore, optimizing and encouraging the use of recycled water is not applicable.

6.8 Climate Change Impacts to Water Supplies
The Santa Barbara County IRWMP (Dudek, 2019) quoted the County’s Long Term Supplemental Water Supply Alternatives Report (Long Term Supplemental Water Supply Alternatives Report, County of Santa Barbara, 2015), which stated that future water availability for some municipal suppliers will be reduced by lost reservoir capacity and reduced reliability of SWP deliveries. In addition, climate change effects such as extended periods CHAPTER SIX: NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
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of drought and more frequent occurrences as well as variance in the frequency and intensity of rain and storm events and the increased frequency and intensity of fires could all further limit water supplies locally and throughout the state. SWP deliveries are affected each year by weather conditions within the source areas and measures to protect habitat in key water transport facilities, particularly within the Sacramento/San Joaquin River Delta.

The IRWMP said that imported water supply from the SWP is projected to decrease by 7% to 10% by 2050, and 21% to 25% by 2100. Seawater inundation in coastal aquifers; increased evapotranspiration rates due to increased temperatures; changes in the amount, timing, and quality of runoff and recharge as precipitation patterns change; increased sedimentation to reservoirs due to increased wildfires; more extreme storm events; longer and more frequent droughts; and damage to infrastructure due to increased flooding and sea-level rise all present significant risk to local water supply. Although these risks have not been quantified, they are widely recognized. These impacts could be reduced through various mitigation measures.

The IRWMP states that sea-level rise has the potential to impact water supplies in Santa Barbara County through seawater intrusion into coastal aquifers, impacts to water infrastructure, and decreased deliveries from the SWP.

Reduction in SWP supplies due to climate change are accounted for in the long-term supply reliability projections in the Draft State Water Project Delivery Capability Report 2025, according to Section 1.3 of the DCR (California Department of Water Resources, Natural Resources Agency, 2025):
“DWR recognizes the risk posed by climate change to both current and future hydrologic and water supply conditions. The 2025 DCR incorporates analysis of the potential impact of climate change on delivery capability identical to the comprehensive manner presented in the 2023 DCR. This report includes substantial peer reviewed enhancements to the methods and information provided in previous reports. DWR will continue to work with state water contractors and the scientific community to further improve and expand the information in future DCRs to provide contractors with decision relevant information for their climate change adaptation planning needs.”
The City will meet these potential reductions in SWP water supplies by continuing to promote conservation and water efficiency measures, management of stored State Water for dry year usage, and ongoing support of sustainable management of the Santa Maria Valley Groundwater Basin.

6.9 Future Water Projects
The City will construct new wells, pipelines, and treatment systems as needed to meet supply and distribution system requirements. The City will optimize available SWP supply, and supplement imported SWP water with groundwater to meet water quantity objectives during peak-use and during shortages (i.e., emergency shutdowns or low allocation) in the supply from SWP.

The City has several water supply projects and programs intended to increase use of the City’s water supply.

Potential water supply projects and programs being pursued by the City include the following:
▪ The construction of new municipal potable water supply wells. There are four additional wells identified to meet demand. One well is under construction, two additional sites are being identified for construction of wells in the near future, and the fourth well identified for funding purposes. ▪ As part of the Stipulation, the City, City of Guadalupe, and GSWC receive 80% of the Twitchell yield of 32,000 AFY. The balance of the water is made available to the stipulating landowners within the Santa Maria Valley Water Conservation District. The Stipulation allows the City to purchase this supply from stipulating landowners and could be used to increase the City’s availability of local groundwater supply.

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Table 6-10. Expected Future Water Supply Projects
(DWR Submittal Table 6-7)
Submittal Table 6-7 Retail: Expected Future Water Supply Projects or Programs Water Code Section 10631 (f)
Name of
Future
Projects or
Programs
Joint
Project
with
other
suppliers?
Water Type
Planned
Implementation
Year
Planned for Use
in Year Type
Expected
Increase in
Water Supply to
Supplier
(AF)
Water Well 15 No Potable 2027 All Year Types 3,387
Water Well 16 No Potable 2029 All Year Types 2,258
Water Well 17 No Potable 2029 All Year Types 2,258
Water Well 18 No Potable 2032 All Year Types 2,258
NOTE: Expected increase in water supply estimated as pumping rate (3,000 GPM for Well 15 and 2,000 GPM for the other wells) for one calendar year at a 70% uptime and converted to AF.

6.10 Water Provided by Wholesale Agency
The City projected deliveries by CCWA, its wholesale water supplier for the SWP. Table 6-11 reflects the water use demands for the City from 2025 through 2050 from CCWA. The City’s water supplies for the future period can be met with a combination of supplies previously identified. Appendix F includes a Reduced Delta Allocation discussion for the City of Santa Maria. Overall, on average, the City does not expect their SWP usage to increase over their historical usage, which has been 9,943 AF/year.

Table 6-11. Retail Agency Demand Projections From Wholesale Suppliers Wholesaler
Contracted
volume (AF) 2025 2030 2035 2040 2045 2050
CCWA 16,200 9,623 9,445 9,088 8,910 8,554 8,554

6.11 Energy Consumption
Energy intensity is defined as the amount of energy used to collectively divert, store, convey, treat, and distribute each unit volume of water and herein is reported as kilowatt hours per acre-foot (kWh/AF). An analysis was performed for the reporting period of January 1, 2025 through December 31, 2025. The City of Santa Maria has two sources of water: groundwater from the Santa Maria Valley Groundwater Basin that is pumped using the City's seven active wells and State Water Project water delivered via CCWA. The wells are able to pump and treat water as well as maintain pressure throughout the City's distribution system. For this analysis, energy use for treatment and conveyance from CCWA is not included but can be found in the CCWA 2025 UWMP.

The energy intensity analysis is shown below in Table 6-12. The final calculated energy intensity is 441 kWh/AF. The City does not generate any electricity to offset its electricity use. Also, this analysis excludes energy used for treating and processing wastewater.

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Table 6-12. Energy Intensity (2025)
Description
Water Management Process
Extraction /
Convey
(wells)
Treatment(1) Total Utility State Water
Volume of Water Entering Process (AF) 7,260 13,004 13,004 5,744 Energy Consumed (kWh) 5,707,298 33,037 5,740,335 0
Energy Intensity (kWh/AF) 786 2.5 441 276(2)
Notes:

1. Treatment total includes 315 AF of GSWC SWP exchange water, 7,260 AF of pumped groundwater, and 5,429 AF of City SWP water.

2. From CCWA 2025 UWMP.

6.12 Future Water Supplies
The projections for the City’s long-term water supplies are presented in Table 6-13 on the next page. The water supply projections consider State Water Project supply variability, return flow quantities based on long-term SWP availability, and anticipated well pumping capacity. Further evaluation of supply sufficiency and reliability during drought are discussed in Chapter 7.

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Table 6-13. Projected Water Supplies
(DWR Submittal Table 6-9)
Submittal Table 6-9 Retail: Water Supplies — Projected
Water Code Section 10631 (b)
Water Supply
Additional
Detail on
Water
Supply
Water Type
(after
treatment if
treated)
Projected Water Supply (Report to the Extent Practicable) 2030 2035 2040 2045 2050 (opt)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
Reasonably
Available
Volume
Total
Entitlement
(OPTIONAL)
(AF) (AF) (AF) (AF) (AF) (AF) (AF) (AF) (AF) (AF)
Purchased or Imported
Water SWP Potable 9,445 17,820 9,088 17,820 8,910 17,820 8,554 17,820 8,197 17,820 Groundwater (not
desalinated) Groundwater Potable 19,480 24,699 21,740 24,467 21,740 24,352 21,740 24,120 21,740 23,888 Subtotal Potable 28,925 42,519 30,828 42,287 30,650 42,172 30,294 41,940 29,937 41,708 Subtotal Non-Potable 0 0 0 0 0 0 0 0 0 0
Total 28,925 42,519 30,828 42,287 30,650 42,172 30,294 41,940 29,937 41,708 NOTES:

1. SWP Reasonably Available Volume is based on the Draft DCR 2025 and information provided by CCWA, see Table 7-1.

2. Groundwater supplies are comprised of return flows, prescriptive rights, and Twitchell rights. a) Pursuant to the Stipulation, the City is entitled to recapture 65 percent of its SWP use in the Basin as Return Flows. Return flows are calculated as 65% of the Reasonably Available Volume of SWP water. b) The City's prescriptive rights are defined pursuant to the Court’s Phase 5 Statement of Decision, in which the City has been assigned 5,100 AF/YR of prescriptive right. c) Further details regarding Twitchell supply can be found in Exhibit “F” of the Stipulation and are accounted as 14,360 AF/YR. d) Groundwater entitlement has been reduced by 900-af to account for long-term groundwater leases to the Orcutt Area. e) Groundwater reasonably available volume is limited by well capacity. Total well capacity is estimated at 13,830 afy in 2025, 19,480 afy in 2030 and 21,740 afy in 2035.

3. “Total Entitlement” does not account for SWP reliability or groundwater pumping limitations but does subtract 900-af to account for Orcutt Area groundwater leases.

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CHAPTER SEVEN: WATER SERVICE RELIABILITY AND DROUGHT RISK

ASSESSMENT
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Chapter 7. Water Service Reliability and Drought
Risk Assessment

7.1 Supply Reliability
The City has water supply available to meet projected demands. Groundwater, including the City’s prescriptive rights, Twitchell Yield, right to return flows of imported State Water as identified in the Judgement and Stipulation are pumped from the Basin and imported supplies from the SWP are obtained via CCWA.

The City’s supplies are derived both from local groundwater and the SWP. Each source can supplement or replace the other. As a result, the City’s supply is expected to be reliable through 2050. This reliability is a result of the projected reliability of imported water and associated return flows and reliable groundwater in the Basin.

7.1.1 CCWA’s Water Supply Reliability
CCWA’s water supply is imported water from the SWP. The actual amount of water available to be delivered by the SWP varies from year to year based on a combination of hydrologic conditions, water available in SWP storage reservoirs, and environmental regulations in the San Francisco Bay/Sacramento-San Joaquin River Delta. SWP water deliveries are subject to reduction when dry conditions occur in northern California.

CCWA is a SWP contractor. Each contractor submits a request to DWR by October 1 of each year for water in the following calendar year, in an amount up to the contractor’s full entitlement.

The State Water Project Delivery Capability Report 2023 (DCR 2023) concluded that the SWP, using existing facilities operated under current regulatory conditions, and with all contractors asking for their full, allotted amount, could deliver 53% of total allotted amounts on a long-term average dry-period basis, see DCR 2023 Table 7-4 (California Department of Water Resources, Natural Resources Agency, 2024). The delivery reliability could be reduced by 7% to 12% to account for long-term climate change conditions without adaptation. In May 2025 the Department of Water Resources published an addendum to the 2023 DCR addressing Impacts of Subsidence on State Water delivery capability. See Section 7.1.1.1 below for a discussion of subsidence impacts on the SWP. The State Water Project Draft Delivery Capability Report 2025 updated these numbers with a long-term average delivery estimate of 54% and climate change impacts that could reduce the long-term average delivery by between 4% and 11%, see Draft DCR 2025 Table 6-2 (California Department of Water Resources, Natural Resources Agency, 2025).

CCWA provided a table with estimated
long-term SWP reliability for CCWA and
Santa Maria based on the Draft 2025
DCR, see Table 7-1 (see also Appendix
D). Their analysis projected that SWP
deliveries during multiple-dry year
periods would be approximately 15%
(five-year drought) of the entitled
amounts and 5% of the entitled amounts
during an unusually dry single year.

Climate change and sea level rise have
both been considered in determining the
future reliability of this water supply.

Table 7-1. CCWA Long-Term Water Supply Reliability Estimate Year Long-Term
Average
Single Dry
Year
5-year
Drought
2025 54% 5% 15%
2030 53% 5% 15%
2035 51% 5% 15%
2040 50% 5% 15%
2045 48% 5% 14%
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7.1.1.1 SWP Subsidence Impacts (provided by CCWA)
The SWP facilities including the Aqueduct were designed to account for residual natural subsidence in the San Joaquin Valley. However, as noted in the State Water Project Delivery Capability Report 2023 Addendum – Impacts of Subsidence (DCR Subsidence Addendum) released by DWR in May 2025, the overdesign capacity of the Aqueduct to account for subsidence has been exhausted because of historical and ongoing natural and human-induced subsidence. DWR has implemented operating criteria to minimize impacts on the delivery capability because of the reductions in conveyance capacity resulting from subsidence. The DCR Subsidence Addendum modeling indicates that even with these adaptations, 2023 levels of subsidence reduce the longterm average delivery capability of the SWP by 3%. Without arresting and preventing ongoing subsidence and implementing infrastructure improvements, the report estimates that the long-term average delivery capability of the SWP could be reduced by 18% to 87% by 2043, assuming current subsidence trends continue. The estimates of delivery capability presented in the DCR Subsidence Addendum contain a high degree of uncertainty associated with the subsidence trends given the actions related to the Sustainable Groundwater Management Act in the vicinity of the Aqueduct, and DWR is implementing additional studies to improve understanding of this uncertainty.

More importantly, DWR is currently working to implement infrastructure improvement projects to avoid the near-term reductions in the delivery capability forecasted for 2043. The projects include Check 17 Gate Removal, Pools 17-18 Liner Raise, Pools 20-21 Liner Raise, Pool 24 Liner Raise, and Pool 31 Liner Raise. These projects collectively will raise 42 miles of concrete liner at critically subsided locations along the Aqueduct to prevent water supply reductions forecasted for 2043. These near-term projects have been prioritized to begin construction between 2026 and 2028 to maximize the risk reduction. With these improvement projects implemented DWR expects the risk to the delivery capability forecasted in the DCR Subsidence Addendum will be significantly reduced. Concurrently, DWR is also in the planning phases of implementing long-term improvements to restore the original design conveyance capacity and original operating criteria of the Aqueduct through 2085. Accordingly, DWR has recommended using the 2025 Draft DCR to support long-term planning efforts and not the DCR Subsidence Addendum.

7.1.2 Reliability of Return Flows
The City derives its return flows to the local groundwater basin from groundwater recharge that is credited from a percentage of the amount of imported water delivered to the City each year. The available return flows are based on a five-year rolling average of the amount of SWP water imported by the City. The City may then pump 65% of the five-year average of imported water as return flows through their groundwater wells. Under the Stipulation, the City is required to import a minimum of 10,000 AF/YR of SWP water, when available.

Based on projected demands, the City plans to import the required water to meet this requirement from its full entitlement of 17,280 AF/YR of SWP water. As mentioned previously, the return flow water will also be impacted by the reliability of SWP water delivered by CCWA. In normal years, return flows are expected to be about 50% reliable; however, during single-dry years and multiple-dry years, reliabilities are expected to be about 5% to 15% , see Table 7-1, above for projected reliability.

7.1.3 Groundwater Supply Reliability
The City’s water rights in the Basin, are a reliable source of water for the City. The Basin has a large volume of groundwater in storage as a buffer to drought conditions, which has been demonstrated historically to occur from time to time. The groundwater storage is augmented by Twitchell Reservoir, which can store stormwater, including larger storms anticipated with climate change.

As a part of the Stipulation, the City, along with GSWC and City of Guadalupe, has preferential appropriative rights to surplus native groundwater. Therefore, these parties may pump groundwater without limitation unless CHAPTER SEVEN: WATER SERVICE RELIABILITY AND DROUGHT RISK

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a Severe Water Shortage Condition exists, as defined and provided in the Stipulation. The four conditions that serve as the basis for determination of the existence of a Severe Water Shortage Condition are described below.

In the event of a Severe Water Shortage Condition, the Court may order GSWC, along with City of Santa Maria and the City of Guadalupe, to limit their pumping to their respective shares of groundwater derived from the Twitchell Yield, return flows, and any assigned rights, such as the City’s 5,100 AF/YR of prescriptive rights in the Basin.

The Stipulation has requirements for monitoring and management to ensure that water supplies continue to be sufficient to support water uses in the Basin. Annual monitoring is completed to report on water demands and water supplies. The Stipulation includes provisions to avoid Severe Water Shortage Conditions and a procedure to address such conditions. Given the historic reliability of Basin supplies, Severe Water Shortage Conditions shall be found to exist only when the Management Area Engineer, based on ongoing monitoring, finds the following:

1. Groundwater levels in the Management Area are in a condition of chronic decline over a period of not less than five years;

2. The groundwater decline has not been caused by drought;

3. There has been material increase in groundwater use during the five-year period; and

4. Monitoring wells indicated that groundwater levels in the Santa Maria Valley Management Area are below the lowest recorded levels.

The procedure for addressing Severe Water Shortage Conditions is described in the Stipulation, which may include limitations on groundwater use. The Stipulation also has provisions for the management and administration of the Twitchell Project. These provisions are designed to provide for funding and operation of the Twitchell Project to maintain water supply to the Basin.

As noted, the City has rights to rely on its highest historical use of groundwater in times of surplus, plus 14,300 AF/YR of groundwater derived from the Twitchell Project, its SWP return flows, and its prescriptive rights.

7.1.4 City of Santa Maria’s Water Supply Reliability
Reliability for the City depends upon the reliability of imported water, groundwater production, and maintenance of the Twitchell Project, as discussed previously. The City’s total water supplies and demands are presented in Chapter 6 and Chapter 4, respectively. Comparison of water supply with water demand shows that sufficient water supply is available to meet projected demands. The excess supply available to meet demand serves as a buffer and increases reliability.

Table 7-2 presents water supply projections from State Water, groundwater, and return flows during a normal year, single-dry year, and multiple-dry years for the City for 2045 (note that values for other years will differ slightly (see UWMP Table 6-9 for more information). The normal year supply represents the expected supply under average hydrologic conditions, the dry year supply represents the expected supply under the single driest hydrologic year, and the multiple-dry year supply represents the expected supply during a period of five consecutive dry years.

Each scenario in Table 7-2 demonstrates that the City has adequate water supply reliability to meet demand in 2045.

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Table 7-2. Supply Reliability for the City of Santa Maria for Year 2045 (Adapted from DWR Submittal Tables 6-9, 7-1, 7-3, and 7-4) Source
Normal
Water
Year
Single-Dry
Water
Year
Multiple-Dry Water Years
Year 1 Year 2 Year 3 Year 4 Year 5
Imported Water
from SWP 8,554 891 2,495 2,495 2,495 2,495 2,495
Groundwater(1) 21,740 21,740 21,740 21,740 21,740 21,740 21,740 Total 30,294 22,631 24,235 24,235 24,235 24,235 24,235
Notes:

1.(a) Groundwater pumping is limited by projected well capacity not groundwater entitlements (i.e., variable return flow availability). Refer to Chapter 6 for groundwater entitlements and reliably available supply discussion.
(b) Groundwater return flows are based on five-year rolling average of imported water. Impacts to single-dry year SWP imports will not affect availability of return flows for previous five-year average. (c) Multiple-dry year reliability of groundwater return flows considers the previous five-year rolling average of SWP imports. These projections assume five years of normal water years before the beginning of the multipledry year period.

Table 7-2 lists single-dry year and multiple-dry year periods for both groundwater and purchased water supplies. The single-dry year and multiple-dry year periods are based on CCWA’s projected SWP supply availability as discussed in Sections 6.2 and 7.1.1.

If required, other mechanisms could augment the reliability of supplies during a dry period. Additional water can be made available through the SWP system for the incremental cost of purchasing or exchanging the water from others in the SWP delivery system. For example, water may be available through transfers or exchanges with other State Water Contractors, purchases of water through DWR dry-year water purchase programs, shortterm water transfers through DWR’s Turnback Pool programs, and groundwater recharge programs.

For the groundwater reliability analysis, precipitation data from 1949 through 2010 were reviewed. Data for the water year basis were obtained by the WRCC in Santa Maria, California. Precipitation data was evaluated from water year 1949 (October 1, 1948 through September 30, 1949) through water year 2010 (October 1, 2009 through September 30, 2010). The single driest water year was 1972 with 4.26-inches of precipitation. The normal water year was based on DWR’s description of the median water year over the period of record. The median annual precipitation between water year 1949 and water year 2010 was 12.07 inches. Based on the median precipitation, the normal water year was 1988. The multiple-dry year period of water year 1970 through water year 1972 recorded the lowest 3 -year total of precipitation.

The following sections present the current water sources: normal water year, single-dry year, multiple-dry year water supply, and demand assessments.

7.2 Normal Water Year Analysis
Table 7-3 summarizes the service reliability assessment for a normal water year based on water supply and water demand projections. The demands presented in Table 7-3 include projected water use within the City, sales to other agencies, and water loss from Table 4-2. The supply decreases slightly each year since the SWP is expected to gradually lose reliability over time. The City’s supplies exceed the amount needed to meet projected demands. Chapter 6 provides details of available total water supplies.

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Table 7-3. Comparison of Projected Normal Year Supply (AF) and Demand for Normal Water Year (AF) (DWR Submittal Table 7-2)
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
2030 2035 2040 2045 2050
(AF) (AF) (AF) (AF) (AF)
Supply totals 28,925 30,829 30,650 30,294 29,937
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 14,742 16,173 15,181 14,300 13,779

7.3 Single-Dry Year Analysis
The single-dry year reliable supplies for imported water delivered by CCWA may be significantly reduced to 14% or 15% in an intense single-year drought. Any water demand that cannot be met with SWP water and associated return flows will be met by groundwater supplies.

Table 7-4 demonstrates the reliability of water supplies to meet projected annual water demands for the City in a single-dry year. The SWP supply reliability is based on CCWA’s projections of SWP supply availability as discussed in Sections 6.2 and 7.1.1. The single-dry year supplies will meet or exceed projected demands through 2050 because local groundwater supply will offset the deficit in imported water supply in a single-dry year.

Table 7-4. Comparison of Projected Supply (AF) and Demand for Single-Dry Year (AF) (DWR Submittal Table 7-3)
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
2030 2035 2040 2045 2050
(AF) (AF) (AF) (AF) (AF)
Supply totals 20,371 22,631 22,631 22,631 22,631
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 6,189 7,976 7,162 6,638 6,472

7.4 Multiple-Dry Year Analysis
Table 7-5 presents the projected multiple-dry year water supply and demand assessment. As discussed in Sections 6.2 and 7.1.1, CCWA’s supply projections are based on the Draft DCR 2025 and vary over time and with regards to normal year, single-dry year, or multiple-dry year – see Table 7-1 for projected SWP availability scenarios. Water demands that cannot be met with SWP water and associated return flows are expected to be met by groundwater supplies.

Multiple-dry year water supplies are less than the normal years; however, the projected total water supplies are greater than the projected demands. A combination of groundwater and SWP water will meet projected water CHAPTER SEVEN: WATER SERVICE RELIABILITY AND DROUGHT RISK

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demands under multiple-dry years. Table 7-5 demonstrates that the water supplies are sufficient to meet the projected water demand for each multiple-dry year period because groundwater and SWP water can supply water reliably through 2050. Although return flow supply decreases over the course of a multi-year drought, the City’s groundwater entitlements exceed the well pumping capacity, therefore the well pumping capacity plus available SWP water establishes a consistent supply total.

Water supplies from local groundwater and purchased water exceed total future estimated water demands under normal, single-dry year, and multiple-dry years.

Table 7-5. Comparison of Projected Supply and Use for Multiple-Dry Years (AF) (DWR Submittal Table 7-4)
2030 2035 2040 2045 2050
First
year
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus 7,971 9,758 8,944 8,242 8,076
Second
year
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus 7,971 9,758 8,944 8,242 8,076
Third
year
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus 7,971 9,758 8,944 8,242 8,076
Fourth
year
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus 7,971 9,758 8,944 8,242 8,076
Fifth
year
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus 7,971 9,758 8,944 8,242 8,076

7.5 Drought Risk Assessment
A 5-year drought risk assessment is included in the DWR tables found in Appendix C. This assessment, however, is generally not applicable to Santa Maria since water supplies are sufficient even in a multiple year drought. In other words, in dry years, the City’s supply exceeds its demands. The City will impose water use restrictions due to a catastrophic emergency or other reasons as discussed in the Water Shortage Contingency Plan (Appendix H).

7.6 Resource Optimization
The City is committed to optimizing its available water resources, including groundwater, and implementing water conservation programs throughout its service area. To expand the breadth of offered programs, the City partners with wholesale suppliers, local retailers, and other agencies that support water conservation programs.

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The City understands the importance of water conservation for California’s future. The City’s water conservation programs are always in effect and include the following:
• Irrigation System. The City Recreation and Parks Department initiated a program to improve the efficiency of irrigation programs of the City’s landscaped areas. Under this program, the irrigation system is regularly upgraded by replacing antiquated lines, heads, and valves. In addition, a state-ofthe-art computerized control system is installed at many sites to improve irrigation efficiency.

Furthermore, a self-guided garden tour offers a variety of plants suggested for planting to reduce irrigation water demand.
• Public Information Programs. The City Utilities Department practices a comprehensive public education program that has led to lower water usage.
• Residential and System Water Audit Program. This program includes home water visits in which the City inspects residential plumbing fixtures and irrigation systems for opportunities to conserve water. The system audit program includes a thorough water meter inspection plan and a notice of high water use to customers.
• Fixed Base Meter Reading System. The City Utilities Department installed a fixed-base meter reading system on all meters. This meter reading system reduces water demand by identifying customer leaks. • Water Conservation Outreach. The City Utilities Department continues to work with the community to encourage water conservation on a voluntary basis. Water conservation activities include various advertisements, water conservation kits, soil moisture meters, anti-leak irrigation sprinklers, shower timers, toilet tank banks, and other promotional items.

The City’s water conservation programs are discussed in more detail in Chapter 9 – Demand Management Measures.

The City optimizes the use of its water supply through innovative actions that use water information systems to conserve and use water efficiently. Conservation and sensible water use helps to increase the reliability of City’s overall water portfolio.

7.6.1 Water Quality
The quality of the City’s water supply depends on the blending proportion of the SWP water with local groundwater. Having two distinct sources of supply provides the City with flexibility in managing its water supply and blended water quality. The lower TDS concentration of the SWP water, when blended with the local groundwater, helps the City to meet its wastewater discharge requirements.

In general, groundwater represents a majority of the City’s current water supply. The City meets all State and Federal drinking water standards. In addition, the City does not anticipate any future water quality issues that may affect supply or reliability. Annually, the City publishes a Water Quality Report detailing the water quality sampling results for the City’s wells and SWP water. The City’s most recent water quality report is provided in Appendix G.

7.6.1.1 Surface Water Quality
The City purchases water from CCWA, which obtains its water supply from the coastal branch of the Aqueduct.

The source water of the SWP originates in northern California's mountains, rivers and streams, and flows through the Sacramento-San Joaquin Delta before entering the Aqueduct.

The coastal branch of the SWP consists of a 101-mile long aqueduct from Kern County to Vandenberg Space Force Base in Santa Barbara County and a 42-mile long CCWA pipeline from Vandenberg SFB to Lake CHAPTER SEVEN: WATER SERVICE RELIABILITY AND DROUGHT RISK

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Cachuma. Water is pumped from the West Branch of the SWP through a series of five pumping stations and ultimately delivered to the Polonio Pass Water Treatment Plant where the water is treated by conventional surface water filtration techniques.

The Polonio Pass Water Treatment Plant is located in the Cholame Hills at an elevation of approximately 1,400 feet. This elevation allows the plant to distribute water to the Santa Ynez Pumping Facility in Santa Barbara County, approximately 120 miles away. There is no additional treatment of the SWP water, with the exception of adjustment or addition of disinfectants. The interconnection, through which Santa Maria accepts water from CCWA, is located downstream of Polonio Pass Water Treatment Plant and upstream of the Santa Ynez Pumping Plant.

The main water quality concerns for the SWP water from CCWA are related to the water supply source. The water quality is generally excellent; however, it is affected by seawater intrusion and agricultural drainage from peat soil islands in the Bay Delta area. The water quality parameters that are of particular importance include total organic carbon ("TOC”) and bromide. An increase in TOC and bromide concentrations may result in an increased production of disinfection byproducts. Chloramines are used at Polonio Pass Water Treatment Plant to mitigate potential disinfectant byproduct issues.

7.6.1.2 Groundwater Quality
The City operates seven active groundwater wells, which extract groundwater from the Santa Maria Valley Groundwater Basin. Water from the seven wells travel via well header lines to the City’s Blending and Disinfection Facility. At this location, disinfectant is used and the source water from each well is blended to address nitrate, hardness, or mineral content to ensure State and Federal drinking water standards are met. The Blending and Disinfection Facility is also the location where the groundwater can be blended with imported SWP water to improve overall supply and water quality prior to entering the City’s water distribution system.

7.7 Climate Change Impacts to Water Reliability
As discussed in this report, the City has State Water Project and adjudicated groundwater basin supply sources.

A significant portion of the County is occupied by forest land, and wildfire is a common occurrence in the Region due primarily to the warm, dry climate. Longer and warmer seasons are likely to result in a low to moderate increase in fire risk according to the IRWMP. This could result in increased sedimentation to reservoirs negatively impacting water quality and reducing storage capacity.

Rainfall and snowfall are expected to change in terms of both type and timing Statewide, per the IRWMP. The state has experienced decreased snowpack in the Sierra Nevada, which has implications for SWP deliveries.

DWR is predicting that the Sierra snowpack will experience a 25% to 40% reduction by 2050 based on historical modeling, with additional decreases caused by warmer storms due to climate change. At the local level, changes in the timing and intensity of precipitation could negatively affect groundwater recharge, runoff flowing to rivers and reservoirs, flooding frequency, and length of the dry season and resulting increased risk of wildfires and vegetation die off.

The Coastal Branch of the SWP delivers water originating in Northern California to water agencies in Santa Barbara County including the City of Santa Maria. The Sacramento–San Joaquin River Delta is the central hub of the SWP. Potential impacts to the Delta resulting from climate change include increased risk of levee failure, reduced water quality, and reduced water supply, all of which could impact SWP operations, and the reliability of the supply of water delivered to the City. Sea-level rise threatens to disrupt deliveries from the SWP if saltwater advances into the Delta and increased quantities of fresh water would need to be released to protect water quality.

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Impacts to SWP from climate change and sea level rise have both been considered in determining the future reliability and future allocations as presented in the Draft 2025 SWP Delivery Capability Report (California Department of Water Resources, Natural Resources Agency, 2025).

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CHAPTER EIGHT: WATER SHORTAGE CONTINGENCY PLAN
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 8-1 09/03/2026
Chapter 8. Water Shortage Contingency Plan
The Urban Water Management Planning Act requires that the UWMP include an urban water shortage contingency analysis that addresses stages of action to be undertaken by the urban water supplier in response to water supply shortages, including more than a 50% reduction in water supply, and an outline of specific water supply conditions which are applicable to each stage. In addition to the stages of action, the City of Santa Maria is required to develop mandatory prohibitions against specific water use during shortages and consumption reduction methods in the most restrictive stages.

The City’s Water Shortage Contingency Plan (WSCP) is an independent document from the UWMP and can be found in Appendix H. The WSCP has been updated per State requirements. Some of the main topics covered in the updated WSCP include:
▪ Procedures for evaluating water supplies
▪ Criteria for declaring a water shortage
▪ Water shortage stages
▪ Shortage response actions
▪ Seismic risk and mitigation actions
▪ Community outreach
▪ Customer compliance and enforcement
▪ Revenue impacts
▪ Monitoring and reporting requirements
▪ Monitoring and evaluating the WSCP
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CHAPTER EIGHT: WATER SHORTAGE CONTINGENCY PLAN
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 8-2 09/03/2026
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CHAPTER NINE: DEMAND MANAGEMENT MEASURES
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 9-1 09/03/2026
Chapter 9. Demand Management Measures

9.1 Water Waste Prevention Ordinances
City Ordinances, Resolutions, and Municipal Code sections mentioned throughout this document may be found in Appendix I.

City Municipal Code §§ 8-10.32 on leaking facilities and 8-10.33 on outdoor water use restrictions state that water may be shut off and sealed by the City Utilities Department if a customer is found to be willfully and negligently wasting water through the misuse of sprinklers.

City Municipal Code § 9-32.110 Section 423 states that all commercial car wash facilities, including self-wash, shall have a water recycling system, and the design and installation of these systems shall be approved by the administrative authority.

On November 18, 2014, the City Council adopted Resolution 2014-131 to modify and enact Stage 1 of its Water Shortage Contingency Plan. The resolution amended Stage 1 to prohibit outdoor irrigation of ornamental landscapes or turf with potable water from 12:00 p.m. to 4:00 p.m. and to consider such violations to be a “willfully negligent waste of water.”
On May 19, 2015, the City Council adopted Resolution 2015-46 to further modify Stage 1 to prohibit the following acts and consider them a willfully negligent waste of water:

1. Application of potable water to outdoor landscapes during or within 48 hours of measurable rainfall;

2. Irrigation with potable water of ornamental turf on public street medians; and

3. Irrigation with potable water outside newly constructed homes or buildings not in accordance with emergency regulations or other requirements established by the Building Standards Commission and the Department of Housing and Community Development.

On June 21, 2022, the City Council adopted Resolution 2022-70 to comply with the State Water Resources Control Board’s Emergency Regulation for Urban Water Conservation and enact Stage 2 of the Water Shortage Contingency Plan, which added the following requirements in addition to Stage 1 (this level remained in effect as of 2026):

1. Increased enforcement of water waste rules through additional monitoring and water patrols; and

2. Requirement that customer leaks be fixed within 48 hours.

9.2 Metering
The City has approximately 23,000 meters in service, all of which are on Advanced Metering Infrastructure (“AMI”). The City upgraded the AMI system by converting all registers to read in cubic feet (instead of older registers reading in hundred cubic feet) to detect leaks early by monitoring changes in the hourly meter reads.

This information can be used for conservation measures such as tracking customer leaks or excess water usage.

AMI can also be used to identify issues like meter tampering or water theft. This also helps customers by identifying areas of potential concern prior to receiving the water bill. City software highlights high water usage that results in the City conducting onsite leak detection and notification. Leaks in City equipment are fixed, and customers are advised of any leaks in their equipment and notified to complete repairs. The implementation of near real-time meter reading has enhanced these efforts and assisted the City in maintaining and furthering water conservation.

CHAPTER NINE: DEMAND MANAGEMENT MEASURES
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9.3 Tiered Rate Structure
The City has a tiered rate billing structure, including using water rates developed to recover the cost of providing service and billing customers for metered water use. The City revised its water and sewer rates through a Proposition 218 process in 2023. The water rates include both a fixed monthly charge and a variable consumption unit charge, which is the tiered rate structure. The fixed monthly charge, determined by meter size, recovers fixed operation and maintenance costs while the variable consumption charge, determined by actual water use, is based on the cost of providing water service, such as purchasing and managing water resources. The variable General Use rate for most customers has three tiers (0-5 units, 5-15 units, and over 15 units, with each unit representing 100 cubic feet). In previous rate structures, the City had a separate rate category for Mobile Home Parks, but that category was eliminated, and all variable water consumption is charged at the same tiered rate. The fixed monthly meter charge and the variable water consumption charges have an approved annual increase on the first day of the year for 2024 through 2027.

9.4 Public Education and Outreach
Following are summaries of public information and school education programs on water conservation.

9.4.1 Public Information Programs
The City maintains a robust water awareness and conservation program that includes year-round community outreach and complementary water conservation visits by a Water Conservation Specialist, outreach booths at community events, and notifications to customers of suspected leaks using analytical data from the City’s AMI system.

The Utilities Department utilizes social media platforms, a water conservation webpage as well as radio, television, and various print advertisements in English and Spanish, including newspaper ads and informational brochures, large billboards and prominent bus advertisements, geotargeted online advertisements, printed ads in a monthly catalogue sent to City residents, and advertising via online music applications. Promotional items such as water drop magnets, reusable water bottles, home water conservation kits, and tote bags with conservation messaging, among others, are also used for outreach on water conservation.

The water conservation webpages found at www.cityofsantamaria.org/waterconservation provide water conservation information including: Meet the Staff, Home Water Visits, Water Conservation Tips, Education & Outreach, Water Awareness, Landscape, Rebates & Water Restrictions, and Links & Resources. The landing page is easy to navigate, and many subpages contain links to email or call the Water Conservation Specialist.

The Utilities Department has also utilized other creative advertising tools, including an aerial banner that is flown over large community events promoting “Don’t Waste a Drop”, and “Drippy the Drop” an adult-size water drop costume worn during the City’s holiday parade. Drippy the Drop has been used on social media to call attention to various conservation-related messaging, including “Fix a Leak Week” and “Water Tip Wednesdays.”
The City annually participates in the Environmental Protection Agency Fix-a-Leak Week program in March.

The City issues press releases and shares information on social media about home water visits and educates customers on water wasted due to residential leaks.

Information about drought-tolerant landscaping and Smart Irrigation Controllers are available on the City’s water conservation website. Free self-guided tours of demonstration gardens are also available at the Santa Maria Valley Sustainable Garden.

CHAPTER NINE: DEMAND MANAGEMENT MEASURES
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 9-3 09/03/2026
Planned outreach for water conservation include the Mayor of Santa Maria asking residents to take the national Mayor’s Water Challenge for water conservation. The City will also continue water conservation collaboration in the regional Santa Barbara County Water Efficiency Program with other local water purveyors.

9.4.2 Education Programs
Educational water conservations presentations for K-6 are provided throughout the school year, reaching approximately 750 students annually. The Green Gardener Program, held twice a year in both English and Spanish, is composed of 15 two-and-a-half-hour sessions of classroom and field time. Additionally, the Project WET® Teacher Education Program is provided to educators at all levels with education on diverse water topics, enabling educators to teach objective, experiential, science-based water education.

Since 2010, the Utilities Department has sponsored an annual Water Awareness Poster Contest for 3rd grade students. Students compete by creating colorful posters symbolizing Water Awareness Month and explaining the importance of water conservation. The winners are announced at a City Council meeting and receive prizes and public recognition.

In addition to managing and promoting its own programs and activities (including installation of a droughttolerant landscape as a demonstration site at its administration building and annual Showerhead Exchange Program for City residents), the Utilities Department also collaborates with other local water purveyors to coordinate water conservation efforts and co-fund projects and programs, including the “Green Gardener” certification course offered at the local community college. Professional landscapers and residents participate in the four-week classes designed to teach green gardening and landscaping techniques. Topics covered include irrigation efficiency, green waste reduction, pest and fertilizer management, proper plant maintenance and other sustainable, water-saving landscaping topics.

An annual Lawn & Garden Workshop is also held in partnership with Harvest Blend Compost providing information to residents about drought tolerant planting, composting, and water-saving irrigation techniques.

9.5 Programs to Assess and Manage Distribution System Real Loss
The City has implemented several programs to assess and manage distribution system loss. These include meter testing, meter replacements, metering construction water, tracking water used for street sweeping, firefighter training, fixing water main leaks, and sewer maintenance. These are useful in helping the City to annually track water loss. In addition to tracking water production and use to determine water loss, the City has been proactive in preventing leaks by installing over 4,700 anodes on copper service lines to reduce corrosion and pinhole leaks.

Potential water leaks on the customers’ side are identified through the City’s AMI software for meter readings.

Potential leaks are classified as flows that are continuous for three consecutive days. Customers are notified of the potential leak via one or more of the following methods: phone call, door tag, and/or postcard. Additionally, a telephone hotline and email allow customers to report water misuse or leaks, request more information, or schedule a free home water conservation visit. Customers can also report wasteful watering anonymously.

Hotline: (805) 925-0951 ext. 2802. Email: [email protected].

The City has a GIS based reporting system available for use by the public to report water waste or water leaks, among many other reportable items. The reporting page can be found at the following link:
https://smartcity.cityofsantamaria.org/programs/community-programs/neighborhood-connect.

CHAPTER NINE: DEMAND MANAGEMENT MEASURES
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 9-4 09/03/2026

9.6 Water Conservation Program and Staffing Support
The City’s water conservation program is supported through various efforts of Utilities staff and specifically by a full-time position dedicated to water conservation.

Water Conservation Specialist
601 Black Rd, Santa Maria, CA 93458
(805) 925-0951 ext. 7270, [email protected] The position, which has existed since 1998, supports the Utilities Department with outreach and compliance.

Their role enables the City to consistently provide the community’s most essential and basic water services.

Duties include:
• Develops water conservation curriculum, and researches, develops, and updates pertinent water conservation and water reclamation ordinances, standards, policies, and practices. • Monitors program compliance with laws, rules, and regulations related to provision of water conservation and related services.
• Maintains awareness of new developments in the field of water conservation and incorporates new developments as appropriate into programs.
• Develops, implements, and promotes City programs related to water conservation. • Conducts inspections, including home and business water visits. • Establishes schedules and methods for providing water conservation programs, including implementing policies and procedures.
• Participates in the preparation and administration of the water conservation program budget. • Promotes and coordinates specific public activities within the water conservation program to include seminars and workshops, prepares program event and facility marketing materials, including news releases, flyers, and schedules of events.

The Water Conservation Specialist is also a participant in the Santa Barbara County Regional Water Efficiency Program.

9.7 Other Demand Management Measures

9.7.1 Water Survey Programs
The City has developed and implemented a targeting/marketing strategy for residential water use surveys, providing indoor and outdoor water surveys, which have resulted in reduced water consumption.

The Water Conservation Specialist works closely with other City staff in responding to potential water leaks and providing complimentary in-home water visits to residents where indoor and outdoor water use is assessed.

9.7.2 Residential Plumbing Retrofit
The City utilizes various community events for distributing low-flow devices and uses the Utilities Department webpage and other media outlets to provide information on low-flow kits. Kits include an ultra-low-flow showerhead, sink aerator, kitchen swivel aerator, leak detection tablets, and a toilet tank bank. The City also runs a month-long Showerhead Exchange Program in January to promote water conservation indoors for City CHAPTER NINE: DEMAND MANAGEMENT MEASURES
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 9-5 09/03/2026
water customers. Residents are given the opportunity to receive new low flow rated WaterSense® showerheads in exchange for their old showerheads (limited to two showerheads per household).

9.7.3 Smart Landscape Rebate Program and Residential Ultra-Low Flush Toilet Replacement Program
The Smart Landscape Rebate Program, offered through a Santa Barbara County grant partnership, concluded in 2026 but provided incentives to residential and commercial customers to replace water-thirsty landscapes with inefficient irrigation with water-wise plants and irrigation. Costs associated with any combination of preapproved landscape design, irrigation equipment, plant, and other supplies found in the Pre-Qualified Items table of the Smart Landscape Rebate Application qualified for a one-time rebate.

Rebates for High-Efficiency Washing Machine and an ultra-low flush toilet replacement program are not available for residential customers. However, other free items that promote water conservation, such as shower timers, toilet tank banks, moisture meter probes, sink aerators, rain gauges, and hose timers are distributed at community events and educational presentations. The City also refers interested parties to potential rebates offered through Santa Barbara County (Water Wise Santa Barbara, https://www.waterwisesb.org/wwsblandscape-programs-local-programs-and-rebates).

The City is unable to subsidize customer accounts because of Proposition 218 requirements and obligations.

However, the Utilities Department tracks State water conservation rebates that could be applicable to City water customers and shares information on its website when they are available.

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CHAPTER NINE: DEMAND MANAGEMENT MEASURES
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 9-6 09/03/2026
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CHAPTER TEN: PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION 2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 10-1 09/03/2026
Chapter 10.Plan Adoption, Submittal, and
Implementation

10.1 Notice to Cities and Counties Regarding UWMP Review The City initiated agency coordination by emailing letters to cities and counties within and adjacent to its service area, wholesale agencies, wastewater agencies, and agencies with which the City has emergency connections.

The initial letters notified the agencies of the City’s intent to prepare its UWMP and requested input. Table 10-1 lists the agencies contacted during the preparation of this UWMP.

Table 10-1. Coordination with Agencies
Coordinating Agencies
Participated in
UWMP
Development
Commented
on the Draft
Attended
Public
Meetings
Was Contacted
for Assistance
County of Santa Barbara ✓
Central Coast Water Authority ✓ ✓
Golden State Water Company ✓
Laguna County Sanitation District ✓
City of Guadalupe ✓
Nipomo Community Services District ✓
Santa Maria Valley Water Conservation
District
✓
San Luis Obispo County Flood Control and
Water Conservation District
✓
Santa Barbara County Flood Control
District
✓
General Public ✓

10.1.1 Notification Requirement – 60 Days Prior to Review/Adoption Hearing The City notified all of the agencies listed in the table above that the City’s UWMP was being reviewed and updated. The notification was sent on April 1, 2026, more than 60 days prior to the public hearing held on October 6, 2026. Appendix J includes copies of these notifications.

CHAPTER TEN: PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION 2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 10-2 09/03/2026

10.2 Plan Adoption, Submittal, and Implementation
For this update to the City’s UWMP, a public hearing was held on October 6, 2026 to allow the public an opportunity provide input on the UWMP before adoption by City Council. _____ comments were received on the UWMP.

Legal notices for the public hearing were published in local newspapers in accordance with Government Code § 6066. Copies of the draft UWMP were made available for public inspection at the City Clerk’s Office, the City Utilities Department, and on the City website.

The final UWMP, adopted by the City Council on ______, 2026, will be submitted electronically to the DWR, the California State Library, and any city or county for which the City supplies water within 30 days of adoption.

Adopted copies of the final UWMP are available for review by the public at the City Utilities Department during regular business hours and may also be viewed or downloaded from the City website.

Appendix J contains supporting documentation that: (i) the City made the draft UWMP available for public inspection; (ii) the City published notice of the public hearing; and (iii) the City held the public hearing. Also included is a copy of the resolution adopting the 2025 UWMP. These documents satisfy the submittals required by regulation associated with the adoption, submittal, and the limitation of an UWMP.

The City is committed to the implementation of this UWMP as required by § 10643 of the Act. The City has implemented many Demand Management Measures to help meet their per capita water use goal.

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CHAPTER ELEVEN: REFERENCES
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 11-1 09/03/2026
Chapter 11. References
California Coastal Commission. (2004, March). Seawater Desalination and the California Coastal Act. Retrieved from http://www.cacoastkeeper.org/document/seawater-desalination-and-the-california-coastal-act.pdf California Department of Finance. (2015). Projections of Population and Births. Retrieved 2015, from http://www.dof.ca.gov
California Department of Finance. (2025, May). California Department of Finance. Retrieved from January Population and Housing Estimates 2024 and 2025:
https://dof.ca.gov/Forecasting/Demographics/Estimates/
California Department of Water Resources. (2004, February 27). California's Groundwater: Bulletin 118.

Retrieved from http://www.water.ca.gov/groundwater/bulletin118/basindescriptions/3-12.pdf California Department of Water Resources. (2015, May). Disadvantaged Communities Mapping Tool. Retrieved 2016, from https://gis.water.ca.gov/app/dacs/
California Department of Water Resources. (2016, February). Methodologies for Calculating Baseline and Compliance Urban Per Capital Water Use. Retrieved 2015, from
http://www.water.ca.gov/urbanwatermanagement/docs/2015/Methodologies%20- %20February%202016%20FINAL.pdf
California Department of Water Resources. (2021, March). 2015 Urban Water Management Plans Guidebook for Urban Water Suppliers - Final. Retrieved 2016, from
http://www.water.ca.gov/urbanwatermanagement/docs/2015/UWMP_Guidebook_Mar_2016_FI NAL.pdf
California Department of Water Resources, Natural Resources Agency. (2020, July). The State Water Project Final Delivery Capability Report 2019. Retrieved from
https://msb.water.ca.gov/documents/86800/144575dd-0be1-4d2d-aeff-8d7a2a7b21e4 California Department of Water Resources, Natural Resources Agency. (2024, July). The State Water Project Final Delivery Capability Report 2023. Retrieved from https://data.cnra.ca.gov/dataset/finaldcr2023 California Department of Water Resources, Natural Resources Agency. (2025, December). State Water Project Draft Delivery Capability Report 2025. Retrieved from https://data.cnra.ca.gov/dataset/state-waterproject-delivery-capability-report-dcr-2025/resource/5d238ff5-899b-4357-8835-5b043f61f5da California Irrigation Management Information System. (2025). ETo Maps. Retrieved 2016, from http://www.cimis.water.ca.gov
California Urban Water Conservation Council. (2016, January 4). Memorandum of Understanding. Retrieved from http://www.cuwcc.org/Portals/0/Document%20Library/About%20Us/MOU/MOU%2001-04- 2016.pdf
Central Coast Water Authority. (2011, June). 2010 Urban Water Management Plan. Retrieved from http://www.water.ca.gov/urbanwatermanagement/2010uwmps/Central%20Coast%20Water%20Au thority/CCWA%202010%20Urban%20Water%20Management%20Plan.pdf City of Santa Maria. (2013, May 7). City Council Agenda Archives. Retrieved from http://archive.cityofsantamaria.org/CouncilAgendas/2013/May_07/3K-a.pdf City of Santa Maria. (2019, June). 2019 Water Quality Report. Retrieved from https://www.cityofsantamaria.org/home/showdocument?id=15039 CHAPTER ELEVEN: REFERENCES
2025 URBAN WATER MANAGEMENT PLAN
ADMINISTRATIVE REVIEW DRAFT 11-2 09/03/2026
County of San Luis Obispo. (2026, 4 28). Desalination Executable Solution and Logistics Plan (DESAL Plan).

Retrieved from SLO County Public Works: https://www.slocounty.ca.gov/departments/publicworks/current-public-works-projects/desalination-executable-solution-and-logistics-pla Luhdorff & Scalmanini. (2014, April). 2014 Annual Report of Hydrogeologic Conditions, Water Requirements, Supplies and Disposition - Santa Maria Valley Management Area.

Santa Barbara County Association of Governments. (2012, December). Regional Growth Forecast 2010-2040.

Retrieved 2015, from
http://www.sbcag.org/uploads/2/4/5/4/24540302/regional_growth_forecast_2010-2040.pdf Santa Barbara County Association of Governments. (2019, January). Regional Growth Forecast 2050 - Santa Barbara County. Retrieved from SBCAG.org: https://www.sbcag.org/wpcontent/uploads/2023/08/regional_growth_forecast_2050.pdf United States Census Bureau. (2010). Quick Facts. Retrieved 2015, from http://www.census.gov/quickfacts United States Census Bureau. (2015). Fact Finder. Retrieved 2016, from http://factfinder.census.gov Western Regional Climate Center. (2016). Historical Data. Retrieved 2015, from http://www.wrcc.dri.edu This space is intentionally blank.

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix A – Santa Maria Valley Water Conservation
District vs. City of Santa Maria, et al., Case No. 770214 (Superior Court of the State of California, County of Santa Clara, June 30, 2005)
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SUPERIOR COURT OF THE STATE OF CALIFORNIA

COUNTY OF SANTA CLARA

SANT A MARIA V ALLEY WATER

CONSERVATION DISTRICT,
Plaintiff,
v.

CITY OF SANTAMARIA, et aI.,
Defendants.
) SANTA MARIA GROUNDWATER
) LITIGATION
)
)
)
)
)
)
)
)
Lead Case No. CV 770214
(CONSOLIDATED FOR ALL PURPOSES)
[Consolidated With Case Numbers:
~-------------)
CV 784900; CV 785509; CV 785522;
CV 787150; CV 784921; CV 785511;
CV 785936; CV 787151; CV 784926;
CV 785515; CV 786791; CV 787152;
CV 036410]

AND RELATED CROSS-ACTIONS AND

ACTIONS CONSOLIDATED FOR ALL

PURPOSES
)
)
)
San Luis Obispo County Superior Court Case
Nos. 990738 and 990739
[Assigned to Judge Jack Komar for All
Purposes]
STIPULATION (JUNE 30, 2005 VERSION)
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3 I.
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6 II.
7 III.
8 9
10 TABLE OF CONTENTS
INTRODUCTION -- ALL MANAGEMENT AREAS .................................................... 1 A.

B.
e.

Parties and Jurisdiction ........................................................................................... 1 Further Trial ............................................................................................................ 2 Definitions ............................................................................................................... 2 EXHIBITS .......................................................................................................................... 6 DECLARATION OF RIGHTS -- ALL MANAGEMENT AREAS .................................. 6 A.

Recognition of Priority ofOvedying Rights ........................................................... 7 Prescriptive Rights .................................................................................................. 7 Appropriative Rights ............................................................................................... 7 Developed Water Rights ......................................................................................... 7 Rights to Storage Space .......................................................................................... 7 Other Surface Water Rights .................................................................................... 7 11 12
IV. PHYSICAL SOLUTION - ALL MANAGEMENT AREAS ........................................... 8 13 14
15 A.

B.
e.

Authority ................................................................................................................. 8 Purposes and Objectives ......................................................................................... 8 Basin Management Areas ....................................................................................... 8 Groundwater Monitoring ........................................................................................ 9 New Developed Water .......................................................................................... 10 Severe Water Shortage Response ......................................................................... 11 16 V. PHYSICAL SOLUTION: PROVISIONS SPECIFIC TO SANTAMARIA 17 18
19 20
21 22
23 24
VI.

VALLEY MANAGEMENT AREA ................................................................................. 11 A.

Water Rights to Sources of Supply ....................................................................... 11 Monitoring and Managelnent ................................................................................ 14 Response to Varying Conditions ........................................................................... 15 Management and Administration of the Twitchell Project.. ................................. 17 New Urban Uses - Santa Maria Valley Management Area .................................. 20 PHYSICAL SOLUTION: PROVISIONS SPECIFIC TO NIPOMO MESA
MANAGEMENT AREA .................................................................................................. 21 A.

B.
e.

Supplemental Water .............................................................................................. 21 Rights to Use Groundwater ................................................................................... 23 NMMA Technical Group ...................................................................................... 24 Potentially'Severe and Severe Water Shortage Conditions .................................. 25 New Urban Uses ................................................................................................... 27 25 VII. PHYSICAL SOLUTION: PROVISIONS SPECIFIC TO NORTHERN CITIES 26 27
28 MANAGEMENT AREA .................................................................................................. 28 VIII. INJUNCTION - ALL MANAGEMENT AREAS ........................................................... 29 A.

Use Only Pursuant to Stipulation .......................................................................... 29 Injunction Against Transportation From the Basin ............................................... 29 - 1 -
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1 C. No Third Party Beneficiaries ................................................................................ 29 2 IX. RESERVED JURISDICTION - ALL MANAGEMENT AREAS .................................. 30 3 4
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A.

Reserved Jurisdiction; Modifications, Cancellations, Amendments ..................... 30 Noticed Motion ..................................................................................................... 31 De Novo Nature of Proceeding ............................................................................. 31 Filing and Notice ................................................................................................... 31 x. MISCELLANEOUS PROVISIONS - ALL MANAGEMENT AREAS ......................... 31 A.

B.
e.

1. J.

Unenforceable Terms ............................................................................................ 31 Water Quality ........................................................................................................ 32 Duty to Cooperate ................................................................................................. 32 Stipulating Pmiies Under Public Utilities Commission Regulation ..................... 32 Designation of Address, for Notice and Service ................................................... 33 No Loss of Rights ................................................................................................. 33 Intervention After Judgment ................................................................................. 33 Stipulation and Judgment Binding on Successors, Assigns, etc ........................... 34 Costs ...................................................................................................................... 34 Non-Stipulating Parties ......................................................................................... 34 Counterparts .......................................................................................................... 35 Effective Date ........................................................................................................ 35 - 11 -
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1 I. INTRODUCTION -- ALL MANAGEMENT AREAS
2 The Stipulating Parties hereby stipulate and agree to entry of judgment containing the 3 terms and conditions of this Stipulation.
4 5
A.

1. Parties and Jurisdiction
Plaintiff and Cross-Defendant Santa Maria Valley Water Conservation District 6 ("District") is a water conservation district organized under Califomia Water Code section 74000, 7 et seq. The District does not pump Groundwater from the Basin. 8 2. Defendants, Cross-Complainants and Cross-Defendants the City of Santa Maria 9 ("Santa Maria"), City of Guadalupe ("Guadalupe"), Southem Califomia Water Company 10 ("SCWC"), Nipomo Community Services District ("NCSD"), Rural Water Company ("RWC"), 11 City of Arroyo Grande ("Arroyo Grande"), City of Pismo Beach ("Pismo Beach"), City of Grover 12 Beach ("Grover Beach") and Oceano Community Services District ("Oceano") rely, in part, on 13 Groundwater to provide public water service to customers within the Basin. 14 3. Cross-Defendant County of San Luis Obispo ("San Luis Obispo") is a subdivision 15 of the State of Califol11ia. Cross-Defendant San Luis Obispo County Flood Control and Water 16 Conservation District ("SLO District") is a public entity organized pursuant to the laws of the 17 State of Califol11ia. Neither San Luis Obispo nor SLO District pumps Groundwater from the 18 Basin.
19 4. Cross-Defendant County of Santa Barbara ("Santa Barbara") is a subdivision of 20 the State of Califol11ia. Santa Barbara does not pump Groundwater from the Basin. 21 5. Numerous other Cross-Defendants and Cross-Complainants are Overlying 22 Owners. Many of these Overlying Owners pump Groundwater from the Basin, while others do 23 not currently exercise their Overlying Rights. Those Overlying Owners who are Stipulating 24 Parties are identified on Exhibit "A".
25 6. This action presents an inter se adjudication of the claims alleged between and 26 among all Parties. This Court has jurisdiction over the subject matter of this action and over the 27 Parties herein.
28 III
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1 B. Further Trial
2 The Stipulating Parties recognize that not all Parties have entered into this Stipulation and 3 that a trial will be necessary as to all non-Stipulating Parties. No Stipulating Party shall interfere 4 or oppose the effort of any other Stipulating Party in the preparation and conduct of any such 5 trial. All Stipulating Parties agree to cooperate and coordinate their effOlis in any trial or hearing 6 necessary to obtain entry of a judgment containing the terms and conditions of this Stipulation. 7 No Stipulating Party shall have any obligation to contribute financially to any future trial. 8 c. Definitions
9 10
As used in this Stipulation, the following temlS shall have the meanings herein set forth:

1. Annual or Year - That period beginning January 1 and ending December 11 31.
12 2. Annual Report - The report prepared and filed with the Court ammally for 13 each Management Area.
14 3. Appropriative Rights - The right to use surplus Native Groundwater for 15 reasonable and beneficial use.
16 4. Available State Water Project Water - The amount of SWP Water an 17 Importer is entitled to receive in a given Year based upon the Califomia Depmiment of Water 18 Resources final Table A allocation.
19 5. Basin - The groundwater basin described in the Phase I and II orders of the 20 COUli, as modified, and presented in Exhibit "B".
21 6. Developed Water - Groundwater derived from human intervention as of 22 the date of this Stipulation, which shall be limited to Twitchell Yield, Lopez Water, Return 23 Flows, and recharge resulting from storm water percolation ponds. 24 7. Groundwater - Twitchell Yield, Lopez Water, Retum Flows, stonn water 25 percolation, Native Groundwater and all other recharge percolating within the Basin. 26 8. Importer(s) - Any Pmiy who brings Imported Water into the Basin. At the 27 date of this Stipulation, the Importers are Santa Maria, SCWC, Guadalupe, Pismo Beach, and 28 Oceano.
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1 9. Imported Water - Water within the Basin, originating outside the Basin 2 that absent human intervention would not recharge or be used in the Basin. 3 10. Lopez Project - Lopez Dam and Reservoir located on Arroyo Grande 4 Creek, together with the associated water treatment plant, delivery pipeline and all associated 5 facilities, pursuant to State Water Resources Control Board permit No. 12814 (A-18375) and 6 pending application No. A-30826.
7 11. Lopez Water - Groundwater within the Basin derived from the operation of 8 the Lopez Project.
9 12. Management Areas - The three areas within the Basin that have sufficient 10 distinguishing characteristics to pennit the water resources and facilities of each area to be 11 individually managed. The Management Areas are: the Northem Cities Management Area, the 12 Nipomo Mesa Management Area, and the Santa Maria Valley Management Area, as shown on 13 Exhibit "C".
14 13. Management Area Engineer - The individual(s) or consulting firm(s) that 15 are hired to prepare the Monitoring Planes) and AImual Report(s) for one or more of the 16 Management Areas.
17 14. Monitoring Parties - Those Parties responsible for conducting and funding 18 each Monitoring Program.
19 15. Monitoring Program - The data collection and analysis program to be con20 ducted within each Management Area sufficient to allow the preparation of the AImual Report. 21 16. Native Groundwater - Groundwater within the Basin, not derived from 22 human intervention, that replenishes the Basin through precipitation, stream chmmel infiltration, 23 tributary nmoff, or other natural processes.
24 17. New Developed Water - Groundwater derived from human intervention 25 through programs or projects implemented after the date of this Stipulation. 26 18. New Urban Uses Municipal and industrial use which may occur on land 27 that, as of January 1, 2005, was located: 1) within the boundaries of a municipality or its sphere of 28 influence, or within the process of inclusion in its sphere of influence; or 2) within the certificated - 3 -
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1 service area of a publicly regulated utility. The New Urban Use areas are identified in Exhibit 2 "D". New Urban Uses does not include the current DJ Farms development within Guadalupe 3 City limits (including Santa Barbara County APN 113-080-18, 113-080-24). 4 19. Nipomo Mesa Management Area or NMMA - That Management Area 5 shown on Exhibit "C".
6 20. Nipomo Mesa Management Area Technical Group The committee 7 fon11ed to administer the relevant provisions of the Stipulation regarding the Nipomo Mesa 8 Management Area.
9 21. Northern Cities Management Area - That Management Area which is part 10 of Zone #3 of the San Luis Obispo County Flood Control and Water Conservation District as 11 shown on Exhibit "C".
12 22. Northern Cities - Arroyo Grande, Pismo Beach, Grover Beach and 13 Oceano.
14 23. Northern Parties - The Northern Cities, the Overlying Owners within the 15 Northern Cities Management Area, San Luis Obispo and the SLO District. 16 24. Overlying Right - The appurtenant right of an Overlying Owner to use 17 Native Groundwater for overlying, reasonable and beneficial use. 18 25. Overlying Owner(s) - Owners of land overlying the Basin who hold an 19 Overlying Right.
20 26. Party - Each Person in this consolidated action, whether a StipUlating 21 Party or a non-Stipulating Party.
22 27. Person - Any natural person, fil111, association, organization, joint venture, 23 partnership, business, trust, corporation, or public entity. 24 28. Public Hearing - A hearing after notice to all Pmiies and to any other 25 person legally entitled to notice.
26 29. Return Flows Groundwater derived from use and recharge within the 27 Basin of water delivered through State Water Project facilities. 28 III
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1 30. Santa Maria Vallev Management Area That Management Area shown on 2 Exhibit "C".
3 31. Severe Water Shortage Conditions - Those conditions, as separately 4 defined in a Severe Water Shortage Response Plan for each Management Area, that trigger 5 certain discretionary and mandatory responses by the Stipulating Parties upon order of the Court. 6 32. Severe Water Shortage Response Plan - The discretionary and mandatory 7 responses for each Management Area that are to be implemented when Severe Water Shortage 8 Conditions exist.
9 33. State Water Project Water or SWP Water - Water imported through the 10 State of Califomia State Water Resources Development System pursuant to Division 6, Part 6, 11 Chapter 8, of the Califomia Water Code.
12 34. Stipulating Party - A Party that has signed this Stipulation, as listed in 13 Exhibit "A", or its heirs, executors, administrators, trustees, successors, assigns, and agents. 14 35. Storage Space - The portion of the Basin capable of holding water for sub15 sequent reasonable and beneficial uses. 16 36. SWP Contract(s) - Those series of contracts that entitle the Importers to 17 use SWP facilities to bring Imported Water into the Basin. 18 37. Twitchell Management Authority or TMA - The committee fonned to 19 administer the relevant provisions of the Stipulation regarding the Santa Maria Valley Manage20 ment Area. 21 38. Twitchell Participants - Those Stipulating Parties holding rights to 22 Twitchell Yield.
23 39. Twitchell Project - Dam and reservoir authorized by Congress as the 24 "Santa Maria Project" on September 3, 1954 (Public Law 774, 83d Congress, ch. 1258, 2d 25 session, 68 Stat. 1190) and located on the Cuyama River, approximately six miles upstream from 26 its junction with the Sisquoc River, pursuant to that certain License For Diversion And Use of 27 Water, License No. 10416, issued by the State Water Resources Control Board. 28 III
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1 40. Twitchell Water - Groundwater derived from operation of the Twitchell 2 Project.
3 41. Twitchell Yield - The total amount of Groundwater allocated annually to 4 the Twitchell Participants.
5 II. EXHIBITS
6 7
The following Exhibits are attached to this Stipulation and incorporated herein:

1. Exhibit "A ", list identifying the Stipulating Parties and the parcels of land 8 bound by the temlS of this Stipulation.
9 2. Exhibit "B ", Phase I and II Orders, as modified, and the attached map 1 0 depicting the Santa Maria Basin.
11 3. Exhibit lie", map of the Basin and boundaries of the three Management 12 Areas.
13 4. Exhibit "D", map identifying those lands as of January 1,2005: 1) within 14 the boundaries of a municipality or its sphere of influence, or within the process of inclusion in its 15 sphere of influence; or 2) within the certificated service area of a publicly regulated utility; and a 16 list of selected parcels that are nearby these boundaries which are excluded from within these 17 areas.
18 5. Exhibit "E", 2002 Settlement Agreement between the Northem Cities and 19 Northem Landowners.
20 6. Exhibit "F", the agreement among Santa Maria, SCWC and Guadalupe 21 regarding the Twitchell Project and the TMA.
22 7. Exhibit "G", the Court's Order Conceming Electronic Service of Pleadings 23 and Electronic Posting of Discovery Documents dated June 27, 2000. 24 8. Exhibit "H", the fonn of memorandum of agreement to be recorded. 25 III. DECLARATION OF RIGHTS -- ALL MANAGEMENT AREAS
26 The temlS and conditions of this Stipulation set forth a physical solution conceming 27 Groundwater, SWP Water and Storage Space, consistent with common law water rights priorities. 28 III
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1 A. Recognition of Priority of Overlying Rights
2 Except as expressly modified by the settlement agreement among the Northern Parties 3 (Exhibit "E"), all Overlying Owners that are also Stipulating Pmiies have a prior and paramount 4 Overlying Right, whether or not yet exercised.
5 B. Prescriptive Rights
6 As to the Stipulating Parties, no Party has proved prescriptive rights to any Native 7 Groundwater. Future use by the Stipulating Parties will not be adverse and will not ripen into a 8 prescriptive right as between the Stipulating Parties. 9 c. Appropriative Rights
10 Consistent with the specific provisions governing each Management Area, the Stipulating 11 Parties owning and exercising Appropriative Rights have the right to the reasonable and bene12 ficial use of Native Groundwater that is surplus to the reasonable and beneficial uses of the 13 Stipulating Parties that are Overlying Owners. New appropriative uses shall be subordinate to 14 existing appropriations and shall be prioritized on a first in time, first in right basis. 15 D. Developed Water Rights
16 The Stipulating Parties owning Developed Water or New Developed Water have the right 17 to its reasonable and beneficial use, consistent with the specific provisions governing each 18 Management Area. The right to use Developed Water is a right to use commingled Groundwater 19 and is not limited to the corpus of that water.
20 E. Rights to Storage Space
21 The Court shall reserve jurisdiction over the use of the Storage Space, and any Party may 22 apply to the Court for the approval of a project using Storage Space. The Court must approve any 23 project using Storage Space before any Party can claim a right to stored water from that project. 24 The Stipulating Parties agree that Groundwater derived from Developed Water is exempt from 25 the Court approval requirements of this Paragraph.
26 F. Other Surface Water Rights
27 Nothing in this Stipulation affects or otherwise alters common law riparian rights or any 28 surface water rights, unless expressly provided in this Stipulation. - 7 -
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IV. PHYSICAL SOLUTION _. ALL MANAGEMENT AREAS
1 2
A. Authority
3 Pursuant to Article X, section 2 of the California Constitution, the Stipulating Parties 4 agree that the Court has the authority to enter a judgment and physical solution containing the 5 terms and conditions of this StipUlation. Unless the Court imposes this physical solution, poten6 tial changes in water use could affect Basin adequacy and integrity. The Declaration of Rights is 7 a component of this physical solution.
8 B. Purposes and Objectives
9 The tenns and conditions of this StipUlation are intended to impose a physical solution 10 establishing a legal and practical means for ensuring the Basin's long-tenn sustainability. This 11 physical solution governs Groundwater, SWP Water and Storage Space, and is intended to ensure 12 that the Basin continues to be capable of supporting all existing and future reasonable and 13 beneficial uses. This physical solution is: 1) a fair and equitable basis for the allocation of water 14 rights in the Basin; 2) in furtherance of the mandates of the State Constitution and the water 15 policy of the State of California; and 3) a remedy that gives due consideration to applicable 16 common law rights and priorities to use Groundwater and Storage Space, without substantially 17 impairing any such right.
18 c. Basin Management Areas
19 Development and use of Groundwater, SWP Water and Storage Space have historically 20 been financed and managed separately in three Management Areas. For example, only the 21 Northern Parties have paid for, managed, and benefited from the Lopez Project; whereas only 22 Santa Maria Valley parties have paid for, managed, and benefited from the Twitchell Project. In 23 contrast, the Nipomo Mesa parties have not been involved in the funding or management of either 24 the Twitchell or Lopez Projects.
25 The StipUlating Parties agree that Groundwater, SWP Water and Storage Space can be 26 more efficiently allocated and managed in three Management Areas, given the physical, geo27 graphical, political, economic, and historic conditions. The three Management Areas, as shown 28 on Exhibit "C," are as follows: Northern Cities Management Area; Nipomo Mesa Management - 8 -
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1 Area; and Santa Maria Valley Management Area. The Stipulating Parties intend that manage2 ment through three Management Areas will preserve the Basin's integrity. 3 4
D. Groundwater Monitoring

1. Monitoring Program. A Monitoring Program shall be established in each 5 of the three Management Areas to collect and analyze data regarding water supply and demand 6 conditions. Data collection and monitoring shall be sufficient to detem1ine land and water uses in 7 the Basin, sources of supply to meet those uses, groundwater conditions including groundwater 8 levels and quality, the amount and disposition of Developed Water supplies, and the amount and 9 disposition of any other sources of water supply in the Basin. The NOlihem Cities Management 10 Area shall not be required to include in its Monitoring Program or Almual Reports quantification 11 of groundwater recharge from the Lopez Project or stoml water percolation ponds, unless the 12 Court orders inclusion of this infom1ation.
13 Within one hundred and eighty days after entry of judgment, representatives of the Moni14 toring Parties from each Management Area will present to the Court for its approval their 15 proposed Monitoring Program. The Management Area Engineers shall freely share available well 16 data, groundwater models, and other products and tools utilized in monitoring and analysis of 17 conditions in the three Management Areas, consistent with the confidentiality provisions of this 18 Stipulation.
19 Absent a Court order to the contrary, all Stipulating Pmiies shall make available relevant 20 infoDnation regarding groundwater elevations and water quality data necessary to implement the 21 Monitoring Program approved for their respective Management Area. The Monitoring Parties 22 shall coordinate with the Stipulating Pmiies to obtain any needed data on reasonable tenns and 23 conditions. Metering may only be imposed on Stipulating Pmiies upon a Court order following a 24 showing that such data is necessary to monitor groundwater conditions in the Basin, and in the 25 case of an Overlying Owner, that Overlying Owner has failed to provide infoDnation comparable 26 to that provided by other Overlying Owners. The confidentiality of well data fi'om individual 27 owners and operators will be preserved, absent a Court order or written consent. 28 III
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1 2

2. 3 ment Authority.
4 5
6 3.

Monitoring Parties. The Monitoring Parties are as follows:
(a)
(b)
(c)
Santa Maria Valley Management Area The Twitchell ManageNorthern Cities Management Area - The Northern Cities.

Nipomo Mesa Management Area - The NMMA Technical Group.

Annual Reports. Within one hundred and twenty days after each Year, the 7 Management Area Engineers will file an Almual Report with the Court. The Almual Report will 8 summarize the results of the Monitoring Program, changes in groundwater supplies, and any 9 threats to Groundwater supplies. The Almual Report shall also include a tabulation of Manage10 ment Area water use, including Imported Water availability and use, Return Flow entitlement and 11 use, other Developed Water availability and use, and Groundwater use. AllY Stipulating Party 12 may object to the Monitoring Program, the reported results, or the Almual Report by motion. 13 4. Management Area Engineer. The Monitoring Parties may hire individuals 14 or consulting firms to assist in the preparation of the Monitoring Programs and the Almual 15 Reports. Except as provided below for the Santa Maria Valley Management Area, the Moni16 toring Parties, in their sole discretion, shall select, retain and replace the Management Area 17 Engineer.
18 19
E. New Developed Water

1. Stipulating Parties in each Management Area may prepare and implement 20 plans to develop, salvage or import additional water supplies. 21 2. The Stipulating Parties that pay, or otherwise provide consideration, for 22 New Developed Water are entitled to use it to the extent the New Developed Water augments the 23 water supplies in that Management Area. If more than one Stipulating Party finances or partici24 pates in generating New Developed Water, rights to the supply of New Developed Water shall be 25 proportional to each Stipulating PaliY's financial contribution or other consideration, or as other26 wise mutually agreed to by the participating StipUlating Parties. This paragraph does not apply to 27 Return Flows.
28 III
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3. The Stipulating Parties who desire to claim New Developed Water supplies 2 must bring a motion, and obtain an order from the Court, quantifying and allocating the rights to 3 the New Developed Water, before they have the prior right to the New Developed Water. 4 F. Severe Water Shortage Response
5 This physical solution sets forth a Severe Water Shortage Plan for each Management Area 6 which is intended to provide an effective response to Severe Water Shortage Conditions that may 7 develop within each or all of the Management Areas. The specific Severe Water Shortage Plans 8 for each Management Area are incorporated herein and made a part of the physical solution. 9 10
V. PHYSICAL SOLUTION: PROVISIONS SPECIFIC TO SANTA MARIA VALLEY

MANAGEMENT AREA
11 As supplemented by the provisions of this Stipulation that apply to all Management Areas, 12 the following tenns govern rights to Groundwater, SWP Water and Storage Space in the Santa 13 Maria Valley Management Area.
14 15
A. Water Rights to Sources of Supply

1. Overlying Rights. The Stipulating Pmiies who are Overlying Owners 16 within the Santa Maria Valley Management Area each have the prior and paramount right to use 17 Native Groundwater. Subject to Paragraph V(C)(2)(b)(vi), all Overlying Rights are appurtenant 18 to the overlying land and cmUlot be assigned or conveyed separate or apart from those lands. 19 2. Appropriative Rights. The Parties listed in Exhibit "A" are the owners of 20 Appropriative Rights exercised in the Santa Maria Valley Management Area. Each Appropriative 21 Right is limited to Native Groundwater that is surplus to reasonable and beneficial uses of the 22 Stipulating Pmiies that are Overlying Owners in the Santa Maria Valley Management Area. New 23 appropriative uses shall be subordinate to existing Appropriative Rights and shall be prioritized 24 on a first in time, first in right basis.
25 3. Developed Water. The Stipulating Parties owning Developed Water have 26 the right to its reasonable and beneficial use, subject only to the Severe Water Shortage Plan. On 27 an mUlual basis, the Stipulating Parties shall have the right to the reasonable and beneficial use of 28 Developed Water that is surplus to the reasonable and beneficial uses of the owners of that - 11 -
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Developed Water. The right to use Developed Water is a right to use commingled Groundwater 2 and is not limited to the corpus of that water.
3 (a) New Developed Water. The ownership and use of New Developed 4 Water shall be subj ect to Court order.
5 6
(b) Twitchell Water.
(i) Amount. The Twitchell Project annually provides a variable 7 amount of Developed Water that augments the Groundwater in the Santa Maria Valley Manage8 ment Area. Twitchell Yield is thirty-two thousand acre-feet per year ("afy"). 9 (ii) Division of Twitchell Yield. Twitchell Yield shall be 10 divided as follows: 80% to Santa Maria, SCWC and Guadalupe, and 20% to the Overlying 11 Owners within the District who are Stipulating Parties. 12 a. The Twitchell Yield allocated to Santa Maria,
13 SCWC and Guadalupe is suballocated pursuant to the agreement among Santa Maria, SCWC and 14 Guadalupe, as attached and incorporated herein as Exhibit "F". 15 b. The Twitchell Yield allocated to the Overlying
16 Owners who are Stipulating Parties within the District shall be equally allocated to each acre of 17 land within the District owned by these Stipulating Parties. ConculTently with the execution of 18 this Stipulation, each of these Stipulating Parties shall repOli their acreage of overlying land 19 within the District on a parcel specific basis. Within one hundred and twenty days of the effec20 tive date of this Stipulation, the Management Area Engineer shall create a list of all the Stipu21 lating Parties and their respective allocation of the Twitchell Yield. 22 (iii) Recapture of Twitchell Yield. The right to use Twitchell 23 Yield is a right to use commingled Groundwater and is not limited to the corpus of that water. 24 (iv) Transfer of Twitchell Yield. Twitchell Yield may be trans25 felTed, temporarily or permanently, only between Stipulating Paliies and the transfer market shall 26 be as open and competitive as practical. A memorandum of agreement summarizing each transfer 27 shall be filed with the Comi and provided to the TMA. Any such memorandum of agreement 28 shall state the Pmiies to the transfer, the amount of Twitchell Yield trans felTed, the price per acre- - 12 -
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1 foot, and the Party responsible for the financial obligation associated with the Twitchell Yield. 2 (v) Carryover. Any portion of Twitchell Yield that is not used 3 in a given Year shall not be can'ied over into the following Year. 4 5
(c) State Water Project Water.
(i) Import and Use of State Water Project Water. Santa Maria, 6 SCWC and Guadalupe all have SWP Contracts. Santa Maria will import and use within the Santa 7 Maria Valley Management Area not less than 10,000 acre-feet each Year of Available SWP 8 Water, or the full amount of Available SWP Water if the amount physically available is less than 9 10,000 acre-feet in a given Year under Santa Maria's SWP Contract. Guadalupe will import and 10 use within the Santa Maria Valley Management Area a minimum of 75% of its Available SWP 11 Water. SCWC will import and use within the Basin all its Available SWP Water. Santa Maria, 12 SCWC and Guadalupe will not voluntarily relinquish or terminate their current SWP Contracts, 13 and shall seek renewal of these SWP Contracts.
14 15
(ii) Return Flows.
a. Fixed Amount. The Retum Flows available to each
16 Importer is fixed based on a percentage of the anl1ual amount of SWP Water the Importer uses 17 within the Basin. The fixed percentage for each importer is as follows: (a) Santa Maria 65%; (b) 18 SCWC 45%; and (c) Guadalupe 45%. The percentage provided to SCWC and Guadalupe shall 19 be adjusted through a Court order if: a) either entity increases its use of water imported into the 20 Basin, b) the applicable method of wastewater treatment and discharge to the Basin is altered, or 21 c) good cause is shown.
22 b. Recapture. The right to use Retum Flows does not
23 attach to the corpus of SWP water deliveries or the treated SWP wastewater discharged into the 24 Basin but is a right to use the commingled Groundwater. The Importer's right to Retum Flows is 25 assignable in whole or in part, subject to necessary accounting. 26 c. Quantification of Retum Flows. Retum Flows equal
27 the total amount ofSWP Water used by the Importer in the prior five Years, divided by five, and 28 then multiplied by the Importer's percentage as provided in Paragraph V(A)(3)(c)(ii)(a) above. - 13 -
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1 d. Carryover. Any portion of Return Flows that is not 2 used in a given Year shall not be carried over into the following Year. 3 4
B. Monitoring and Management

1. Status of Management Area. Current Groundwater and SWP Water sup5 plies are sustaining existing water uses. Changes in land and water use and demographic con6 ditions can be expected to occur, possibly resulting in changes in water supply or demand 7 requirements.
8 2. Need (or Monitoring. Monitoring and reporting of changes in land and 9 water use and demographic conditions are necessary to ensure that water supplies continue to be 10 sufficient to support water uses.
11 12

3. Monitoring Program.
(a) Annual Report: Content and Processing.
13 The Annual RepOli shall include an analysis of the relationship between projected water demands 14 and projected water supplies.
15 (i) The Annual Report shall be prepared and signed by the 16 Management Area Engineer, and shall be simultaneously submitted to the COUli and the TMA. 17 (ii) Within forty-five days of submission, the TMA shall hold a 18 noticed public hearing to take comments on and consider for adoption the Almual Report. No 19 later than forty-five days from the date of the public hearing, the TMA shall submit to the Court 20 its recommendations regarding the Annual RepOli.
21 (iii) Within one hundred and twenty days of the date of the 22 submission of the Almual Report to the COUli, it shall conduct a noticed hearing on the Annual 23 Report. AllY Party may submit comments on the Annual Report. After the hearing, the Court 24 shall accept the Almual Report or direct its modification. 25 (b) Management Area Engineer
26 (i) Absent the unanimous consent of the TMA, the Manage27 ment Area Engineer shall not COnClllTently be employed by any Party holding rights to use 28 Groundwater in the Santa Maria Valley Management Area. - 14-
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(ii) The Management Area Engineer shall initially be the engin2 eering finn of Luhdorff & Scalmanini. Luhdorff & Scalmanini shall be the Management Area 3 Engineer for a minimum of the shorter of five years from the date of this Stipulation or the date 4 upon which Mr. Joseph Scalmanini discontinues full time work for that finn. 5 (iii) The TMA shall employ the following process to replace the 6 Management Area Engineer:
7 a. The TMA shall solicit candidates for Management
8 Area Engineer through a public process. All submissions and candidate materials shall be avail9 able to any Pmiy upon request. The TMA shall conduct its interview tlu·ough a public process to 10 the extent practical, and include District and Overlying Owner representatives in the candidate 11 reVIew process.
12 b. Once a short list of candidates (less than five) for 13 Management Area Engineer is obtained, the TMA shall hold a noticed public hearing to take 14 comments on and consider the candidates for Management Area Engineer. The TMA shall make 15 a reasonable effort to select the Management Area Engineer with a unanimous vote. If the TMA 16 unanimously endorses a candidate, that nominee shall be recommended to the Court. Otherwise, 17 the short list of candidates shall be submitted.
18 c. The Court shall appoint the Management Area
19 Engineer following a noticed hearing.
20 4. Funding. The TMA shall pay for the Monitoring Program for the Santa 21 Maria Valley Management Area, which includes the cost of the Management Area Engineer and 22 the Annual RepOli. The cost of the Monitoring Program shall be divided among the Twitchell 23 Participants on the same basis as the allocation of their Twitchell Yield. 24 25
c. Response to Varying Conditions

1. Early Response to Avoid Severe Water Shortage Conditions. If the Man26 agement Area Engineer determines that projected demands are expected to materially exceed 27 projected water supplies, then the Management Area Engineer may recommend programs and 28 projects to augment the Management Area's water supplies. The Stipulating Parties will collabo- - 15 -
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1 rate on a response based upon current conditions, but absent Severe Water Shortage Conditions, 2 implementation of programs and projects will not be mandated. 3 The Stipulating Parties may voluntarily participate in any recommended program or 4 project, either through financial or other contributions. The Stipulating Pmiies that contribute to 5 such a program or project shall have a priority to the water supplies generated by that program or 6 project with Court approval. The Stipulating Parties agree to aggressively pursue New 7 Developed Water sources, including necessary funding. 8 9

2. Severe Water Shortage Conditions and Response.
(a) Detennination. Severe Water Shortage Conditions shall be found 10 to exist when the Management Area Engineer, based on the results of the ongoing Monitoring 11 Program, finds the following: 1) groundwater levels in the Management Area are in a condition of 12 chronic decline over a period of not less than five Years; 2) the groundwater decline has not been 13 caused by drought; 3) there has been a material increase in Groundwater use during the five-Year 14 period; and 4) monitoring wells indicate that groundwater levels in the Santa Maria Valley 15 Management Area are below the lowest recorded levels. 16 17
(b) Response.
(i) If the Management Area Engineer detennines that Severe 18 Water Shortage Conditions exist within the Santa Maria Valley Management Area, the Manage19 ment Area Engineer shall file and serve, as part of its Annual Report, findings and recommen20 dations to alleviate such shortage conditions or the adverse effects caused by such water shortage. 21 (ii) Upon the filing of the Arumal RepOli, the Court shall hold a 22 noticed hearing regarding the existence and appropriate response to the Severe Water Shortage 23 Conditions. If, after that hearing, the Court finds that Severe Water Shortage Conditions exist in 24 the Santa Maria Valley Management Area, the Court shall first order all use of Groundwater to be 25 limited to: (a) for Guadalupe, Santa Maria and SCWC, their Developed Water; (b) entitled 26 Stipulating Parties to their New Developed Water; and (c) for the Overlying Owners, the Native 27 Groundwater plus any Developed Water to which individual Overlying Owners are entitled. 28 III
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1 (iii) The Court may also order Stipulating Parties to address 2 specific adverse effects caused by the Severe Water Shortage Conditions. The responses may 3 include, but are not limited to: (a) measures recommended in the Annual Report and the related 4 Court proceedings; and (b) other measures intended to address localized problems in the Santa 5 Maria Valley Management Area directly related to the Severe Water Shortage Conditions. 6 (iv) The Court may adjust the Groundwater use limitations 7 imposed on any Stipulating Party(ies) who implement programs or projects providing additional 8 water supplies within the Santa Maria Valley Management Area. 9 (v) If the Court finds that Management Area conditions have 10 deteriorated since it first found Severe Water Shortage Conditions, the Comi may impose further 11 limitations on Groundwater use. If the Court imposes further limitations on Groundwater use, a 12 Stipulating Party shall be exempt from those limitations to the extent: (a) the Stipulating Party can 13 demonstrate that it has already implemented limitations in its Groundwater use, equivalent to 14 those ordered by the Court; or (b) the Stipulating Patiy can demonstrate that further limitations 15 would not avoid or reduce the deteriorating conditions. 16 (vi) During Severe Water Shortage Conditions, the Stipulating 17 Parties may make agreements for temporary transfer of rights to pump Native Groundwater, 18 voluntary fallowing, or the implementation of extraordinary conservation measures. Transfers of 19 Native Groundwater must benefit the Management Area and be approved by the Court. 20 21
D. Management and Administration of the Twitchell Project

1. Operational Parameters. All Twitchell Project operations (operation and 22 maintenance and capital projects) will be performed consistent with the following parameters 23 (Operational Parameters):
24 (a) Maximize recharge of the Santa Maria Valley Management Area 25 from Twitchell Water, including without limitation, the avoidance of impacts on recharge 26 resulting from ongoing accumulation of silt to the maximum extent practical. 27 (b) Operate the Twitchell Project in accordance with the requirements 28 of applicable law including, without limitation, the requirements of the Bureau of Reclamation - 17 -
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1 and Anny Corps of Engineers.
2 (c) Operate the Twitchell Project in accordance with industry standards 3 and best management practices.
4 5

2. Twitchell Project Manual.
(a) The TMA will hire and pay for a professional engineering con6 sulting finn with expertise in dam and reservoir operations and maintenance, acceptable to the 7 District and the TMA, to develop an integrated operation and rpaintenance procedure manual 8 ("Twitchell Project Manual") and provide recommendations for capital and maintenance projects 9 that are consistent with the Operational Parameters.
10 (b) The District shall hold one or more public hearings to solicit input 11 regarding the content of the Twitchell Project Manual. 12 (c) Within eighteen months of entry of the judgment, the TMA and the 13 District shall adopt a final Twitchell Project Manual. 14 (d) Any disagreement between the District and the TMA regarding the 15 content of the final Twitchell Project Manual shall be presented for Court review and detennina16 tion pursuant to the judicial review provisions provided in this Stipulation. 17 (e) The District will exercise its discretionary authority to conduct all 18 its operation and maintenance activities for the Twitchell Project in accordance with the Twitchell 19 Project Manual.
20 21

3. Twitchell Project Funding.
(a) District will maintain its CUl1"ent operation and maintenance (O&M) 22 assessments. These funds will be used for District staff salaries, property, equipment, rent, 23 expenses, and other day-to-day operations, and will be expended consistent with the Twitchell 24 Project Manual to the extent it is applicable.
25 (b) The TMA will separately fund, administer, construct and manage 26 any additional Twitchell Project expenses or projects, including Capital Improvement Projects 27 (see below) and O&M, (Extraordinary Project Operations) consistent with the Twitchell Project 28 Manual. The TMA and the District will make reasonable effOlis to work cooperatively to imple- - 18 -
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1 ment Extraordinary Project Operations.
2 (c) Consistent with the provisions of this Paragraph V(D), the District 3 and the TMA shall be responsible for ensuring the ongoing operational integrity of the Twitchell 4 Project and the maintenance of the Twitchell Yield. The Stipulating Parties expect that this 5 ongoing responsibility may involve significant expenditures. Within 120 days of the effective 6 date of this Stipulation, and annually thereafter, the Twitchell Participants shall establish an 7 operating budget for the TMA to fund its responsibilities set forth in this Stipulation. For the first 8 five years following the PUC approval as provided below, the TMA's annual budget shall be 9 established at an amount between $500,000 to $700,000. Following the initial budgeting period, 10 the TMA shall set its budget in three- to five-year increments, as it deems necessary to meet its 11 obligations to preserve the Twitchell Yield. Any unused revenues shall be segregated into a 12 reserve account, for future funding needs of the Twitchell Project. The Stipulating Parties agree 13 to cooperate and coordinate their efforts to enable the TMA to fulfill its responsibilities as pro14 vided in this Stipulation. 15 16

4. Twitchell Management Authority.
(a) The TMA shall be comprised of one representative of each of the 17 following parties: Santa Maria, Guadalupe, Southem Califomia Water Company, the District, and 18 Overlying Landowners holding rights to Twitchell Yield. 19 (b) Only those pmiies holding an allocation of Twitchell Yield shall be 20 voting members of the TMA. Voting shall be based on each party's propOliionate allocation of 21 Twitchell Yield.
22 (c) The TMA shall be responsible for all the Extraordinary Project 23 Operations.
24 (d) The TMA shall be responsible for developing proposals for Capital 25 Improvement Projects relating to the Twitchell Project. Capital Improvement Projects shall mean 26 projects involving the expenditure of funds for the improvement or enhancement of the Twitchell 27 Project, but shall not include normal operation, maintenance or repair activities. 28 III
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1 (e) Upon the development of a proposal for a Capital Improvement 2 Project, the TMA shall, in cooperation with the District, hold one or more public hearings to 3 solicit input.
4 (f) Following the public hearing process, the TMA may vote on 5 whether to implement the Capital Improvement Project. 6 (g) The cost of TMA-sponsored Extraordinary Project Operations and 7 Capital Improvement Projects shall be divided among Twitchell Participants on the same basis as 8 the allocation of their Twitchell Yield.
9 (h) The District shall assume operation and maintenance responsibility 10 for any TMA sponsored Capital Improvement Project to the extent practical within the District's 11 day-to-day operations.
12 5. Regulatory Compliance. The TMA or the District shall provide advance 13 notice to the Comi and all Pmiies of the initiation of any regulatory proceeding relating to the 14 Twitchell Project.
15 6. Existing Contracts. The Twitchell Reservoir Project will continue to be 16 governed by and subject to the terms and conditions of the December 1955 agreement between 17 the District and the Santa Barbara County Water Agency and nothing in this Stipulation is 18 intended to modify the rights or obligations provided in that agreement. To the extent that the 19 approval of Santa Barbara County Water Agency or the United States Bureau of Reclamation is 20 required in cOlmection with the implementation of this Stipulation, the Stipulating Parties agree to 21 work cooperatively to obtain such approval(s).
22 23
E. New Urban Uses - Santa Maria Valley Management Area

1. New Urban Uses shall obtain water service from the local public water 24 supplier. The local public water supplier shall provide water service on a reasonable and non25 discriminatory basis. 26 2. New municipal and industrial uses on land adjacent to or within one27 quarter mile of the boundary line depicted in Exhibit D shall comply with any applicable Cor28 porations Code provisions and negotiate in good faith to obtain water service from the local - 20-
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public water ~upplier, before fonning a mutual water company to provide water service. 2 3. No modification of land use authority. This StipUlation does not modify 3 the authority of the entity holding land use approval authority over the proposed New Urban 4 Uses.
5 4. New Urban Uses shall provide a source of supplemental water to offset the 6 water demand associated with that development. For the purposes of this section, supplemental 7 water shall include all sources of Developed Water, except: i) Twitchell Water, ii) stonn water 8 percolation ponds existing as of the date of entry of the judgment, or iii) Overlying Owners' right 9 to use of surplus Developed Water.
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VI. PHYSICAL SOLUTION: PROVISIONS SPECIFIC TO NIPOMO MESA MANAGEMENT AREA 12 As supplemented by the provisions of this Stipulation that apply to all Management Areas, 13 the following tenns shall apply to the Nipomo Mesa Management Area. 14 15
A. Supplemental Water

1. MOU. NCSD has entered into a Memorandum of Understanding 16 ("MOU") with Santa Maria which contemplates the wholesale purchase and transmission from 17 Santa Maria to the NMMA of a certain amount of water each Year (the "Nipomo Supplemental 18 Water"). All water delivered pursuant to the MOU for delivery by NCSD to its ratepayers shall 19 be applied within the NCSD or the NCSD's sphere of influence as it exists at the time of the 20 transmission of that water.
21 2. The NCSD agrees to purchase and transmit to the NMMA a minimum of 22 2,500 acre-feet of Nipomo Supplemental Water each Year. However, the NMMA Technical 23 Group may require NCSD in any given Year to purchase and transmit to the NMMA an amount 24 in excess of 2,500 acre-feet and up to the maximum amount of Nipomo Supplemental Water 25 which the NCSD is entitled to receive under the MOU if the Technical Group concludes that such 26 an amount is necessary to protect or sustain Groundwater supplies in the NMMA. The NMMA 27 Technical Group also may periodically reduce the required amount of Nipomo Supplemental 28 Water used in the NMMA so long as it finds that groundwater supplies in the NMMA are not - 21 -
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1 endangered in any way or to any degree whatsoever by such a reduction. 2 3. The Stipulating Parties agree to support (and, conversely, not to oppose in .3 any way or to encourage or assist any other Person or party in opposing or challenging) the imple4 mentation of the MOU, which includes environmental and regulatory permits and approvals, the 5 approval of a wholesale water supply agreement between Santa Maria and NCSD, and the 6 alignment and construction of a pipeline and related infrastructure necessary to deliver the 7 Nipomo Supplemental Water from Santa Maria to the NMMA ("Nipomo Supplemental Water 8 Project"). ConocoPhillips retains the right to object to or provide input on the alignment of any 9 pipelines associated with the Nipomo Supplemental Water Project if they might interfere with the 10 location of existing ConocoPhillips pipelines. The StipUlating Parties retain their rights to be 11 compensated for any interest or property acquired in implementing the Nipomo Supplemental 12 Water Proj ect.
13 4. NCSD and Santa Maria shall employ their best efforts to timely implement 14 the Nipomo Supplemental Water Project, subject to their quasi-judicial obligations specified for 15 administrative actions and in the Califomia Environmental Quality Act. 16 5. The enforcement of the provisions of Paragraph VI(D) below is condi17 tioned upon the full implementation of the Nipomo Supplemental Water Project, including the 18 Yearly use of at least 2,500 acre-feet of Nipomo Supplemental Water (subject to the provisions of 19 Paragraph VI(A)(2) above) within the NMMA. h1 the event that Potentially Severe Water 20 Shortage Conditions or Severe Water Shortage Conditions are triggered as referenced in Para21 graph VI(D) before Nipomo Supplemental Water is used in the NMMA, NCSD, SCWC, 22 Woodlands and RWC agree to develop a well management plan that is acceptable to the NMMA 23 Technical Group, and which may include such steps as imposing conservation measures, seeking 24 sources of supplemental water to serve new customers, and declaring or obtaining approval to 25 declare a moratorium on the granting of further intent to serve or will serve letters. In the event 26 that it becomes apparent that the Nipomo Supplemental Water will not be fully capable of being 27 delivered, any StipUlating Party may apply to the Court, pursuant to a noticed motion, for appro28 priate modifications to this portion of the Stipulation and the judgment entered based upon the - 22-
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tenns and conditions of this Stipulation, including declaring this Paragraph VI to be null and void, 2 and of no legal or binding effect.
3 6. Once the Nipomo Supplemental Water is capable of being delivered, those 4 certain Stipulating Parties listed below shall purchase the following portions of the Nipomo 5 Supplemental Water Yearly:
6 NCSD - 66.68%
7 Woodlands Mutual Water Company - 16.66%
8 SCWC - 8.33%
9 RWC - 8.33%
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B. Rights to Use Groundwater

1. ConocoPhillips and its successors-in-interest shall have the right to the 12 reasonable and beneficial use of Groundwater on the property it owns as of the date of this Stipu13 lation located in the NMMA ("ConocoPhillips Propeliy") without limitation, except in the event 14 the mandatory action trigger point (Severe Water Shortage conditions) described in Paragraph 15 VI(D) (2) below is reached. Further, any public water supplier which provides water service to 16 the ConocoPhillips Propeliy may exercise that right subject to the limitation described in Para17 graph VI(D)(2). 18 2. Overlying Owners that are Stipulating Parties that own land located in the 19 NMMA as of the date of this Stipulation shall have the right to the reasonable and beneficial use 20 of Groundwater on their property within the NMMA without limitation, except in the event the 21 mandatory action trigger point (Severe Water ShOliage Conditions) described in Paragraph 22 VI(D)(2) below is reached.
23 3. The Woodlands Mutual Water Company shall not be subject to restriction 24 in its reasonable and beneficial use of Groundwater, provided it is concurrently using or has made 25 arrangements for other NMMA parties to use within the NMMA, the Nipomo Supplemental 26 Water allocated to the Woodlands in Paragraph VI(A)(5). Otherwise, the Woodlands Mutual 27 Water Company shall be subject to reductions equivalent to those imposed on NCSD, RWC and 28 SCWC, as provided in Paragraph VI(D)(1-2).
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2 c. NMMA Technical Group
3 1. The NMMA Teclmical Group shall include representatives appointed by 4 NCSD, SCWC, ConocoPhillips, Woodlands Mutual Water Company and an agricultural OverS lying Owner who is also a Stipulating Party. 6 2. The NMMA Technical Group shall develop a Monitoring Program for the 7 NMMA ("NMMA Monitoring Program"), which shall be consistent with the Monitoring 8 Program described in Paragraph IV(D). The NMMA Monitoring Program shall also include the 9 setting of well elevation and water quality criteria that trigger the responses set forth in Paragraph 10 D below. The Stipulating Parties shall provide monitoring and other production data to the 11 NMMA Technical Group at no charge, to the extent that such data has been generated and is 12 readily available. The NMMA Technical Group shall adopt rules and regulations concerning 13 measuring devices and production reports that are, to the extent feasible, consistent with the 14 Monitoring Programs for other Management Areas. If the NMMA Technical Group is unable to 15 agree on any aspect of the NMMA Monitoring Program, the matter may be resolved by the Court 16 pursuant to a noticed motion.
17 3. The NMMA Teclmical Group meetings shall be open to any Stipulating 18 Party. NMMA Technical Group files and records shall be available to any Stipulating Party upon 19 written request. Notices of the NMMA Technical Group meetings, as well as all its final work 20 product (documents) shall be posted to groups.yahoo.com/grouplNipomoCommunityl 21 4. The NMMA Technical Group functions shall be funded by contribution 22 levels to be negotiated by NCSD, SCWC, RWC, ConocoPhillips, and Woodlands Mutual Water 23 Company. In-lieu contributions through engineering services may be provided, subject to agree24 ment by those parties. The budget of the NMMA Technical Group shall not exceed $75,000 per 25 year without prior approval of the Court pursuant to a noticed motion. 26 5. Any final NMMA Technical Group actions shall be subject to de novo 27 Court review by motion.
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4 D. Potentially Severe and Severe Water Shortage Conditions

1. Caution trigger point (Potentially Severe Water ShOliage Conditions) (a) Characteristics. The NMMA Technical Group shall develop 5 criteria for declaring the existence of Potentially Severe Water Shortage Conditions. These 6 criteria shall be approved by the Court and entered as a modification to this Stipulation or the 7 judgment to be entered based upon this Stipulation. Such criteria shall be designed to reflect that 8 water levels beneath the NMMA as a whole are at a point at which voluntary conservation 9 measures, augmentation of supply, or other steps may be desirable or necessary to avoid further 10 declines in water levels.
11 (b) Responses. If the NMMA Technical Group determines that Poten12 tially Severe Water Shortage Conditions have been reached, the Stipulating Parties shall coordi13 nate their efforts to implement voluntary conservation measures, adopt programs to increase the 14 supply of Nipomo Supplemental Water if available, use within the NMMA other sources of 15 Developed Water or New Developed Water, or implement other measures to reduce Groundwater 16 use.
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2. Mandatory action trigger point (Severe Water Shortage Conditions) (a) Characteristics. The NMMA Technical Group shall develop the 19 criteria for declaring that the lowest historic water levels beneath the NMMA as a whole have 20 been reached or that conditions constituting seawater intrusion have been reached. These criteria 21 shall be approved by the Court and entered as a modification to this Stipulation or the judgment to 22 be entered based upon this Stipulation.
23 (b) Responses. As a first response, subparagraphs (i) through (iii) shall 24 be imposed concurrently upon order of the Court. The Court may also order the Stipulating 25 Parties to implement all or some portion of the additional responses provided in subparagraph (iv) 26 below.
27 (i) For Overlying Owners other than Woodlands Mutual Water 28 Company and ConocoPhillips, a reduction in the use of Groundwater to no more than 110% of - 25-
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1 the highest pooled amount previously collectively used by those Stipulating Parties in a Year, 2 prorated for any partial Year in which implementation shall occur, unless one or more of those 3 Stipulating Paliies agrees to forego production for consideration received. Such forbearance shall 4 cause an equivalent reduction in the pooled allowance. The base Year from which the calculation 5 of any reduction is to be made may include any prior single Year up to the Year in which the 6 Nipomo Supplemental Water is transmitted. The method of reducing pooled production to 110% 7 is to be prescribed by the NMMA Teclmical Group and approved by the Court. The quanti fica8 tion of the pooled amount pursuant to this subsection shall be determined at the time the manda9 tory action trigger point (Severe Water Shortage Conditions) described in Paragraph VI(D)(2) is 10 reached. The NMMA Technical Group shall determine a technically responsible and consistent 11 method to determine the pooled amount and any individual's contribution to the pooled amount. 12 If the NMMA Technical Group cannot agree upon a technically responsible and consistent 13 method to detennine the pooled amount, the matter may be detennined by the Court pursuant to a 14 noticed motion.
15 (ii) ConocoPhillips shall reduce its Yearly Groundwater use to 16 no more than 110% of the highest amount it previously used in a single Year, unless it agrees in 17 writing to use less Groundwater for consideration received. The base Year from which the calcu18 lation of any reduction is to be made may include any prior single Year up to the Year in which 19 the Nipomo Supplemental Water is transmitted. ConocoPhillips shall have discretion in deter20 mining how reduction of its Groundwater use is achieved. 21 (iii) NCSD, RWC, SCWC, and Woodlands (if applicable as 22 provided in Paragraph VI(B)(3) above) shall implement those mandatory conservation measures 23 prescribed by the NMMA Technical Group and approved by the Court. 24 (iv) If the Court finds that Management Area conditions have 25 deteriorated since it first found Severe Water ShOliage Conditions, the Court may impose further 26 mandatory limitations on Groundwater use by NCSD, SCWC, RWC and the Woodlands. Manda27 tory measures designed to reduce water consumption, such as water reductions, water restrictions, 28 and rate increases for the purveyors, shall be considered. - 26-
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2 (v) During Severe Water Shortage Conditions, the Stipulating 3 Pmiies may make agreements for temporary transfer of rights to pump Native Groundwater, 4 voluntary fallowing, or the implementation of extraordinary conservation measures. Transfer of 5 Native Groundwater must benefit the Management Area and be approved by the Court. 6 7
E. New Urban Uses

1. Within the sphere of influence or service area. New Urban Uses shall 8 obtain water service from the local public water supplier. The local public water supplier shall 9 provide water service on a reasonable and non-discriminatory basis. 10 2. Outside the sphere of influence or service area. New municipal and indus11 trial uses on land adjacent to or within one qumier mile of the boundary line depicted in Exhibit D 12 shall comply with any applicable Corporations Code provisions, including good faith negotiations 13 with the local water purveyor(s), prior to fonning a mutual water company to provide water 14 service.
15 3. The ConocoPhillips property, owned as of the date of this StipUlation and 16 located within the NMMA, is not in the sphere of influence or service area, nor is it in the process 17 of being included in the sphere of influence, of a municipality or within the certificated service 18 area of a publicly regulated utility as of the date of this StipUlation, nor is it adjacent to or in close 19 proximity to the sphere of influence of a municipality or the certificated service area of a publicly 20 regulated utility as of the date of this Stipulation, as those tenns are used in Paragraphs VI(E)(1 21 and 2).
22 4. No modification of land use authority. This StipUlation does not modify the 23 authority of the entity holding land use approval authority over the proposed New Urban Uses. 24 5. New Urban Uses as provided in Paragraph VI(E)(1) above and new muni25 cipal and industrial uses as provided in Paragraph VI(E)(2) above shall provide a source of 26 supplemental water, or a water resource development fee, to offset the water demand associated 27 with that development. For the purposes of this Paragraph, supplemental water shall include all 28 sources of Developed Water or New Developed Water.
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1 VII. PHYSICAL SOLUTION: PROVISIONS SPECIFIC TO NORTHERN CITIES

MANAGEMENT AREA
2 3 These tenns, supplemented by the provIsIOns of this Stipulation that apply to all 4 Management Areas, govem water rights and resources in the Northem Cities Management Area. 5 1. Groundwater Monitoring. Groundwater monitoring in the Northem Cities 6 Management Area will be conducted by the Northem Cities in the maImer described above. 7 2. Lopez Project. The Lopez Project will continue to be managed by the SLO 8 District. The Northem Cities and Landowners will continue to bear costs of the Lopez Reservoir 9 and no costs of the Twitchell Reservoir.
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3. h1dependent Management Per Settlement Agreement.
(a) Existing Groundwater, SWP Water and Storage Space in the 12 Northem Cities Management Area will continue to be allocated and independently managed by 13 the NOlihem Parties in accordance with the Northem Cities and NOlihem Landowners' 2002 14 Settlement Agreement (Exhibit "E") for the purpose of preserving the long-tenn integrity of water 15 supplies in the Northem Cities Management Area. That Settlement Agreement initially allocates 16 57% of the safe yield of groundwater in Zone 3 to the fanners and 43% to the cities; and it 17 provides inter alia that any increase or decrease in the safe yield will be shared by the cities and 18 landowners on a pro rata basis. That Settlement Agreement is reaffirmed as pati of this Stipula19 tion and its tenns are incorporated into this Stipulation, except that the provisions regarding con20 tinuing jurisdiction (~ 4), groundwater monitoring, reporting, and the Technical Oversight 21 Committee (~~ 7-20) are canceled and superseded by the provisions of this Stipulation dealing 22 with those issues.
23 (b) Without the written agreement of each of the Northem Cities, no 24 party other than Northem Parties shall have any right to:
25 (i) pump, store, or use Groundwater or surface water within the 26 Northem Cities Management Area; or
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1 Management Area.
2 (c) For drought protection, conservation, or other management pur3 poses, the Northern Parties may engage in contractual transfers, leases, licenses, or sales of any of 4 their water rights, including voluntary fallowing programs. However, no Groundwater produced 5 within the Northern Cities Management Area may be transported outside of the Northern Cities 6 Management Area without the written agreement of each of the Northern Cities. 7 4. Current and future deliveries of water within the spheres of influence of the 8 Northern Cities as they exist on January 1,2005 shall be considered existing uses and within the 9 Northern Cities Management Area.
10 VIII. INJUNCTION - ALL MANAGEMENT AREAS
11 A. Use Only Pursuant to Stipulation
12 Each and every Stipulating Party, their officers, agents, employees, successors and 13 assigns, are enjoined and restrained from exercising the rights and obligations provided through 14 this Stipulation in a manner inconsistent with the express provisions of this Stipulation. 15 B. Injunction Against Transportation From the Basin
16 Except upon further order of the Court, each and every Stipulating Party and its officers, 17 agents, employees, successors and assigns, is enjoined and restrained from transporting Ground18 water to areas outside the Basin, except for those uses in existence as of the date of this Stipula19 tion; provided, however, that Groundwater may be delivered for use outside the Basin as long as 20 the wastewater generated by that use of water is discharged within the Basin, or agricultural 21 return flows resulting from that use return to the Basin. 22 C. No Third Party Beneficiaries
23 This Stipulation is intended to benefit the Stipulating Parties and no other Parties. Only a 24 Stipulating Party may enforce the terms of this Stipulation or assert a right to any benefits of, or 25 enforce any obligations contained in this Stipulation. 26 III
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IX. RESERVED JURISDICTION - ALL MANAGEMENT AREAS
A. Reserved Jurisdiction; Modifications, Cancellations, Amendments 3 Jurisdiction, power and authority are retained by and reserved to the Court as set forth in 4 this Paragraph. Nothing in the Court's reserved jurisdiction shall authorize modification, cancel5 lation or amendment of the rights provided under Paragraphs III; YeA, E); VI(A, B, D); VII(2, 3); 6 VIII(A); IX(A, C); and X(A, D) of this Stipulation. Subject to this limitation, the Court shall 7 make such fmiher or supplemental orders as may be necessary or appropriate regarding the 8 following:
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5. 6.

7. 8.

9. enforcement of this Stipulation;
claims regarding wastelunreasonable use of water;
disputes between Stipulating Parties across Management Area boundaries; interpretation and enforcement ofthe judgment;
consider the content or implementation of a Monitoring Program; consider the content, conclusions, or recommendations contained III an Annual Report;
consider Twitchell Project operations, including, but not limited to: i) the content of the Twitchell Project Manual; ii) TMA or District compliance with the Twitchell Project Manual; iii) decisions to implement Extraordinary Project Operations; or iv) the maintenance of Twitchell Yield; claims of localized physical interference between the Stipulating Parties in exercising their rights pursuant to this Stipulation; provided, however, rights to use Groundwater under this Stipulation shall have equal status; and
modify, clarify, amend or amplify the judgment and the Northem Parties 25 Settlement Agreement; Provided, however, that all of the foregoing shall 26 be consistent with the spirit and intent of this Stipulation. 27 III
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1 B. Noticed Motion
2 Any patiy that seeks the Court's exercise of reserved jurisdiction shall file a noticed 3 motion with the Court. Any noticed motion shall be made pursuant to the Court's Order Con4 ceming Electronic Service of Pleadings and Electronic Posting of Discovery Documents dated 5 June 27, 2000, attached and incorporated as Exhibit "0". Any request for judicial review shall be 6 filed within sixty days of the act or omission giving rise to the claim. Upon a showing of good 7 cause, the Court may extend the sixty-day time limitation. 8 c. De Novo Nature of Proceeding
9 The Court shall exercise de novo review in all proceedings. The actions or decisions of 10 any Paliy, the Monitoring Parties, the TMA, or the Management Area Engineer shall have no 11 heightened evidentiary weight in any proceedings before the Court. 12 D. Filing and Notice
13 As long as the COUli's electronic filing system remains available, all Court filings shall be 14 made pursuant to Exhibit "0". If the Court's electronic filing system is eliminated and not 15 replaced, the Stipulating Parties shall promptly establish a substitute electronic filing system and 16 abide by the same rules as contained in the Court's Order. 17 18
x. MISCELLANEOUS PROVISIONS - ALL MANAGEMENT AREAS
A. Unenforceable Terms
19 The Stipulating Parties agree that if any provision of this Stipulation or the judgment 20 entered based on this Stipulation is held to be invalid, void, or unenforceable, the remaining pro21 visions shall nevertheless continue in full force and effect; provided, however, any order which 22 invalidates, voids, deems unenforceable, or materially alters those Paragraphs enumerated in 23 Paragraph IX(A) or any of them, shall render the entirety of the Stipulation and the judgment 24 entered based on this Stipulation voidable and unenforceable, as to any Stipulating Party who 25 files and serves a motion to be released from the Stipulation and the judgment based upon the 26 Stipulation within sixty days of entry of that order, and whose motion is granted upon a showing 27 of good cause.
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1 B. Water Quality
2 Nothing in the Stipulation shall be interpreted as relieving any Stipulating Party of its 3 responsibilities to comply with state or federal laws for the protection of water quality or the 4 provisions of any pennits, standards, requirements, or orders promulgated thereunder. 5 c. Duty to Cooperate
6 The Stipulating Parties agree not to oppose, or in any way encourage or assist any other 7 party in opposing or challenging, any action, approval, or proceeding necessary to obtain 8 approval of or make effective this Stipulation or the judgment to be entered on tenns consistent 9 with this Stipulation.
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D. Stipulating Parties Under Public Utilities Commission Regulation

1. To the extent allowed by law, SCWC and RWC shall comply with this 12 Stipulation, prior to obtaining California Public Utilities Commission ("PUC") approval. If the 13 PUC fails to approve SCWC's and RWC's participation or fails to provide approval of the neces14 sary rate adjustments so that SCWC and RWC may meet their respective financial obligations, 15 including the participation in Developed Water projects, Monitoring Programs, TMA and as 16 otherwise provided in this Stipulation, shall render the entirety of the Stipulation and those tenns 17 of any judgment based on this Stipulation invalid, void and unenforceable, as to any Stipulating 18 Party who files and serves a notice of rescission within sixty days of notice by SCWC or RWC of 19 a final PUC Order.
20 2. Any Party, or its successors or assigns, agreeing to become a new customer 21 of SCWC or RWC, or an existing customer proposing to increase its water use through a change 22 in land use requiring a discretionary land use pennit or other form of land use entitlement, that 23 has not executed reservation contracts for supplemental water as specified in Exhibit F will 24 provide the following, once approved by the PUC:
25 (a) If in the Santa Maria Valley Management Area, a water resource 26 development fee as specified in Exhibit F or a source of supplemental water sufficient to offset 27 the consumptive demand associated with the new use as provided in Paragraph VeE); or 28 III
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1 (b) If in the NMMA, a water resource development fee, or a source of 2 supplemental water sufficient to offset the consumptive demand associated with the new use. 3 3. Any Person who is not engaged in a New Urban Use and who agrees to 4 become a customer of SCWC or RWC shall retain its right to contest the applicable water 5 resource development fee, should that fee ever become applicable to that Person. 6 E. Designation of Address, for Notice and Service
7 Each Stipulating Party shall designate the name, address and e-mail address, if any, to be 8 used for purposes of all subsequent notices and service, either by its endorsement on the Stipula9 tion for entry of judgment or by a separate designation to be filed within thirty days after execu10 tion of this Stipulation. This designation may be changed from time to time by filing a written 11 notice with the Court. Any Stipulating Party desiring to be relieved of receiving notices may file 12 a waiver of notice on a fonn approved by the Court. The Court shall maintain at all times a 13 current list of Parties to whom notices are to be sent and their addresses for purposes of service. 14 The Court shall also maintain a full current list of names, addresses, and e-mail addresses of all 15 Parties or their successors, as filed herein. Copies of such lists shall be available to any Person. 16 If no designation is made, a Stipulating Party's designee shall be deemed to be, in order of 17 priority: i) the Party's attorney of record; ii) if the Party does not have an attorney of record, the 18 Party itself at the address specified.
19 F. No Loss of Rights
20 Nothing in this Stipulation shall be interpreted to require or encourage any Stipulating 21 Party to use more water in any Year than is actually required. As between the Stipulating Parties, 22 failure to use all of the water to which a Stipulating Party is entitled hereunder shall not, no matter 23 how long continued, be deemed or constitute an abandonment or forfeiture of such Stipulating 24 Party's rights, in whole or in part.
25 G. Intervention After Judgment
26 Any Person who is not a Party or successor to a Party, who proposes to use Groundwater 27 or Storage Space, may seek to become a Party to the judgment through a petition for intervention. 28 The Court will consider an order confinning intervention following thirty days notice to the - 33 -
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1 Parties. Thereafter, if approved by the Court, such intervenor shall then be a Party bound by the 2 judgment as provided by the Court.
3 H. Stipulation and Judgment Binding on Successors, Assigns, etc. 4 The Stipulating Parties agree that all property owned by them within the Basin is subject 5 to this Stipulation and the judgment to be entered based upon the temlS and conditions of this 6 Stipulation. This Stipulation and the judgment will be binding upon and inure to the benefit of 7 each Stipulating Party and their respective heirs, executors, administrators, tmstees, successors, 8 assigns, and agents. This Stipulation and the judgment to be entered based the terms and condio. 9 tions of this Stipulation shall not bind the Stipulating Parties that cease to own property within the 10 Basin, or cease to use Groundwater. As soon as practical after the effective date of this Stipula11 tion, a memorandum of agreement referencing this Stipulation shall be recorded in Santa Barbara 12 and San Luis Obispo Counties by Santa Maria, in cooperation with the Northem Cities and 13 SCWc. The document to be recorded shall be in the format provided in Exhibit "H". 14 I.
15 No Stipulating Party shall recover any costs or attomeys fees from another Stipulating 16 Party incurred prior to the entry of a judgment based on this Stipulation. 17 J. Non-Stipulating Parties
18 It is anticipated that the Court will enter a single judgment goveming the rights of all 19 Parties in this matter. The Stipulating Parties enter into this Stipulation with the expectation that 20 the Court will enter, as a part of the judgment, the tem1S and conditions of this Stipulation. This 21 Stipulation shall not compromise, in any way, the Court's legal and equitable powers to enter a 22 single judgment that includes provisions applicable to the non-Stipulating Parties that may 23 impose differing rights and obligations than those applicable to the Stipulating Parties. As against 24 non-Stipulating Parties, each Stipulating Party expressly reserves and does not waive its right to 25 appeal any prior or subsequent mling or order of the COUli, and assert any and all claims and 26 defenses, including prescriptive claims. The Stipulating Parties agree they will not voluntarily 27 enter into a further settlement or stipulation with non-Stipulating Pmiies that provides those non28 Stipulating Parties with terms and conditions more beneficial than those provided to similarly - 34-
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1 situated Stipulating Parties.
2 K. Counterparts
3 This Stipulation may be signed in any number of counterparts, including counterparts by 4 facsimile signature, each of which shall be deemed an original, but all of which shall together 5 constitute one and the same instrument. The original signature pages shall be filed with Court. 6 L. Effective Date
7 This Stipulation shall be effective when signed by the Stipulating Parties listed on Exhibit 8 "A" and accepted by the Court.
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Party
Attorney of Record
SB 375327 vi :006774.0076: 6130/05
Signature, title, and date
Approved as to form:

By: ___________ _
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STIPULA TION (06/30/05)
Parcels Subject to
Stipulation
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PROOF OF SERVICE
I am a resident of the State of California, over the age of eighteen years, and not a party to the within action. My business address is HATCH & PARENT, 21 E. Carrillo Street, Santa Barbara, California 93101.

Pursuant to the Court's Order dated June 28, 2000, I, Gina Lane, did the following:
• Posted the following document at approximately 4:30 p.m. on June 30, 2005.

STIPULATION (JUNE 30, 2005 VERSION)
• Mailed a Notice of Availability to all parties (designating or defaulting to mail service) on the current website's service list.

I am readily familiar with the firm's practice of collection and processing correspondence for mailing. Under that practice it would be deposited with the U.S. Postal Service on that same day with postage thereon fully prepaid in the ordinary course of business. I am aware that on motion of the party served, service is presumed invalid if postal cancellation date or postage meter date is more than one day after date of deposit for mailing in affidavit.

I declare under penalty of perjury under the laws of the State of California that the above is true and correct.

Executed on June 30, 2005, at Santa Barbara, California.

GINAM. LANE
- 36 -
SB 375327 vI :006774.0076: 6/30105 STIPULATION (06130105) Copy of document found at www.NoNewWipTax.com

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix B – AWWA Water Audit Loss Tables
Water Audit Report for:

Audit Year:

All volumes to be entered as: ACRE-FEET PER YEAR
WATER SUPPLIED choose entry option:

VOS Volume from Own Sources: n g 3 7,840.390 Acre-ft/Yr n g 8 percent acre-ft/yr VOSEA WI Water Imported: n g 4 4,803.990 Acre-ft/Yr n g 6 0.05% percent acre-ft/yr over-registration WIEA WE Water Exported: n g 1 1,433.800 Acre-ft/Yr n g 3 percent acre-ft/yr WEEA 11,208.179 Acre-ft/Yr
.

AUTHORIZED CONSUMPTION
BMAC Billed Metered: n g 1 10,601.190 Acre-ft/Yr
BUAC Billed Unmetered: n g n/a 0.000 Acre-ft/Yr
UMAC Unbilled Metered: n g 5 32.720 Acre-ft/Yr choose entry option:

UUAC Unbilled Unmetered: n g 3 26.503 Acre-ft/Yr 0.25% default acre-ft/yr 24061 Default option selected for Unbilled Unmetered, with automatic data grading of 3 10,660.413 Acre-ft/Yr
WATER LOSSES 547.766 Acre-ft/Yr
Apparent Losses
Default option selected for Systematic Data Handling Errors, with automatic data grading of 3 choose entry option:

SDHE Systematic Data Handling Errors: n g 3 26.503 Acre-ft/Yr 0.25% default acre-ft/yr CMI Customer Metering Inaccuracies: n g 1 0.000 Acre-ft/Yr percent acre-ft/yr under-registration UC Unauthorized Consumption: n g 3 26.503 Acre-ft/Yr 0.25% default acre-ft/yr Default option selected for Unauthorized Consumption, with automatic data grading of 3

53.006 Acre-ft/Yr
Real Losses
494.760 Acre-ft/Yr
547.766 Acre-ft/Yr

NON-REVENUE WATER
606.989 Acre-ft/Yr

SYSTEM DATA
Lm Length of mains: n g 6 344.2 miles (including fire hydrant lead lengths) Nc Number of service connections: n g 1 23,799 (active and inactive) Service connection density: 69 conn./mile main
Yes
Lp Average length of (private) customer service line: n g 10 ft (average distance between property line and meter) AOP Average Operating Pressure: n g 7 79.8 psi

COST DATA
CRUC Customer Retail Unit Charge: n g 5 $5.63
VPC Variable Production Cost: n g 1 $674.30 $/acre-ft $/yr (optional input) carbon
WATER AUDIT DATA VALIDITY TIER:
go to
dashboard
PRIORITY AREAS FOR ATTENTION TO IMPROVE DATA VALIDITY: KEY PERFORMANCE INDICATOR TARGETS:

Based on the information provided, audit reliability can be most improved by addressing the following components: OPTIONAL: If targets exist for the operational performance indicators, they can be input below:
1: Billed Metered (BMAC) Unit Total Losses: gal/conn/day 2: Volume from Own Sources (VOS) Unit Apparent Losses: gal/conn/day 3: Water Imported (WI) Unit Real LossesA
: gal/conn/day
Unit Real LossesB: gal/mile/day
If entered above by user, targets will display on KPI gauges (see Dashboard) go to start page
NON-REVENUE WATER:

If entering an
Error Adjustment,
select under- or overregistration
WATER SUPPLIED:

AUTHORIZED CONSUMPTION:

Apparent Losses:

Average length of customer service line has been set to zero and a data grading of 10 has been applied A weighted scale for the components of supply, consumption and water loss is included in the calculation of the Water Audit Data Validity Score *** The Water Audit Data Validity Score is in Tier II (26-50). See Dashboard tab for additional outputs. *** $/100 cubic feet (ccf)
$8,962,826
Total Annual Operating Cost
Click here to calculate carbon emissions --->
Are customer meters typically located at the curbstop/property line? AWWA Free Water Audit Software:

Worksheet
City of Santa Maria
Jan 01 2024 - Dec 31 2024
Water Supplied Error Adjustments
Calendar2024
Real Losses:

WATER LOSSES:

Click 'g' to determine data validity grade
Click 'n' to add notes
FWAS v6.1
American Water Works Association.

To access definitions, click the input name
To edit water system info:

AWWA Free Water Audit Software v6.0 Worksheet 1

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix C – DWR Submittal Tables
Volume of
Water Supplied
2025
(AF)
CA4210011 City of Santa Maria 23,273 11,158
23,273 11,158
NOTES:

Submittal Table 2-1 Retail: Public Water Systems
Total
Add additional rows as needed
DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Table 2-3.

Has there been a change in the number of affiliated Public Water Systems since the 2020 UWMP? (OPTIONAL)
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
Water Supplier is also a member of a SB
X7-7 Regional Alliance
NOTES:

Name of Regional Alliance or
RUWMP (Drop Down List)
Submittal Table 2-2: Plan Identification
Select One
or Both Type of Plan
Individual UWMP
Regional Urban Water Management Plan
(RUWMP)
Supplier is a wholesale supplier
Supplier is a retail supplier
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Unit AF
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 the drop down list).

DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent
throughout the UWMP as reported in Submittal Table 2-3.

NOTES:

Submittal Table 2-4 Retail: Water Supplier Information Exchange Water Code Section 10631(h)
The retail Supplier has informed the following wholesale supplier(s) of projected water use in accordance with Water Code Section 10631 (h).

Wholesale Water Supplier Name
Add additional rows as needed

CENTRAL COAST WATER AUTHORITY
NOTES:
10631(h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five-year increments to 20 years or as far as data is available. 2025 2030 2035 2040 2045 2050(opt)
112,208 117,482 122,768 128,047 129,968 131,788
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
NOTES: 2025 population was estimated by the Department of Finance on January 1, 2025.

The forecasts for 2030 through 2050 were sourced from the Santa Barbara County Association of Governments' (SBCAG) Regional Growth Forecast and were revised proportionally from their estimate versus actual from 2025.

CWC 10631(a) describe the current and projected population of the service area including current and projected population…
Use Type
Volume
(AF)
Single Family Potable 5,137
Multi-Family Potable 2,027
Commercial Potable 2,171
Industrial Potable 375
Landscape Potable 1,092
Other (optional) Flushing, Sweeping, Vactor Trucks
(unbilled metered water) Potable 71
Sales/Transfers/Exchanges to other
Suppliers Nipomo CSD Sale Potable 1,511
Sales/Transfers/Exchanges to other
Suppliers GSWC Exchange Potable 20
Distribution System Water Loss Potable 286
12,689
0 Total 12,689
Submittal Table 4-1 Retail: 2025 Actual Total Uses for Potable and Non-Potable Water Water Code Section 10631(d)(1)
CWC 10631(d)(1) For an urban retail water supplier, quantify, to the extent records are available, past and current water use…identifying the uses among water use sectors including but not limited to:

NOTES: Loss = water produced + water imported - water exported - metered water DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3. 2025 Actual Water Use
Add additional rows as needed
Level of Treatment When
Delivered (OPTIONAL)
Drop down list
Additional Description
(as needed)
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
Subtotal Potable
Subtotal Non-Potable
Use Type
2030 2035 2040 2045 2050 (opt)
(AF) (AF) (AF) (AF) (AF)
Single Family Potable 5,365 5,574 5,777 5,855 5,929Multi-Family Potable 2,116 2,199 2,279 2,310 2,339Commercial Potable 2,273 2,375 2,477 2,515 2,550Industrial Potable 393 410 428 434 440Landscape Potable 1,140 1,185 1,228 1,245 1,260Other (optional) Flushing, Sweeping, Vactor Trucks Potable 46 48 50 51 52Sales/Transfers/Exchanges to other Suppliers Nipomo CSD Sale Potable 2,500 2,500 2,850 3,200 3,200Sales/Transfers/Exchanges to other Suppliers GSWC Exchange Potable 20 20 20 20 20Distribution System Water Loss Potable 329 344 358 364 369 14,182 14,655 15,469 15,993 16,159
0 0 0 0 0
14,182 14,655 15,469 15,993 16,159
Add additional rows as needed.

Submittal Table 4-2 Retail: Total Uses of Potable, and Non-Potable Water - Projected Water Code Section 10631(d)(1)
Additional Description
(as needed)
Projected Water Use
(Report To the Extent that Records are Available)
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
Level of Treatment
When Delivered
(OPTIONAL)
Drop down list
CWC 10631(d)(1) For an urban retail water supplier, quantify, to the extent records are available... projected water use…identifying the uses among water use sectors… Subtotal Potable
Subtotal Non-Potable
Total
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.NOTES: Growth projections based on SBCAG population growth rate distributed among all categories except for "to other Suppliers." Residential and Landscapecategories are adjusted to account for UWUO criteria as applied to projected growth, see Table 4-4.

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.

OPTIONAL Suppliers may complete Optional Submittal Table 4-4 R to quantify the expected savings.

See UWMP
Section 4.2
and 4.6 and
Table 4-4
Are Lower Income Residential Demands Included In Projections? (Refer to Appendix K of UWMP Guidebook)
Drop down list (y/n)
Yes
OPTIONAL If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found. (An example is included in Appendix K.)
Section 4.3
Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) NOTES:

CWC 10631 (d) (4) (B) to the extent that an urban water supplier reports the information described in subparagraph (A), an urban water supplier shall do both of the following: (i) Provide citations of the various codes, standards, ordinances or transportation and land use plans utilized in making the projections.
(ii) Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.

CWC 10631(a) Water use projections required by section 10631 shall include projected water use for single-family and multifamily residential housing needed for lower income households, as identified in the housing element of any city, county, or city and county, in the service area of the supplier .

CWC10631 (d) (4) (A) Water use projections, where available, shall display and account for water savings estimated to result from adopted codes, standards, ordinances, or transpotation and land use plans identified by the urban water supplier, as applicable to the service area. 2030 2035 2040 2045 2050 (opt)
(AF) (AF) (AF) (AF) (AF)
849 1,003 1,065 1,082 1,099
OPTIONAL Submittal Table 4-4 Retail: Passive Water Savings Projections Water Code Section 10631(d)(4)(A)
Passive savings
Add additional rows as needed
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.

Description
(Codes, Standards, Ordinances, or Plans)
Water Code Section 10631(d)(4)(A) Water use projections, where available, shall display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans identified by the urban water supplier, as applicable to the service area.

NOTES: Passive savings required to meet Urban Water Use Objective for new residential development.

UWUO
Public Water System ID # Reported
in Table 2-1 R Reporting Period Submitted to DWR Water Loss Audit Program (yes/no) 2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
CWC 10631(d)(3) (A) The distribution system water loss shall be quantified for each of the five years preceding the plan update, in accordance with rules adopted pursuant to Section 10608.34.

Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
DWR NOTES: Suppliers will provide a link to the WUEdata submittals of their Water Loss Audit Reports.

NOTES:
https://wuedata.water.ca.gov/secure/uploads/7812040030/2024%20CA4210011% 20City%20of%20Santa%20Maria%20Water%20Audit.xlsx ;
https://wuedata.water.ca.gov/secure/uploads/9702787101/2023%20CA4210011% 20City%20of%20Santa%20Maria%20Water%20Audit.xlsx ;
https://wuedata.water.ca.gov/secure/uploads/9145917594/2022%20CA4210011% 20City%20of%20Santa%20Maria%20Water%20Audit.xlsx ;
https://wuedata.water.ca.gov/secure/uploads/2751698136/2021%20City%20of%2 0Santa%20Maria%204210011%20Water%20Audit.xlsx ;
https://wuedata.water.ca.gov/secure/uploads/2505780875/2020%20City%20of%2 0Santa%20Maria%204210011%20Water%20Audit.xlsx
Report submittal status for all five years for each Public Water System as available.

Add rows as needed
Volume of Total Real
Loss (from AWWA
Water Loss Audit)
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
(AF)
CA4210011 Yes 10.4
Gallons per
Service
Connection per
Day (GPSCD) 23799 229.318

8.6 5.9
Gallons per
Service
Connection per
Day (GPSCD) 23799 54.008

2.0 Number of Units
(Connections or Miles
corresponding with
units selected)
State Water Board Standard
2028 Real Water Loss
Standard per Unit per
day
Units for Real
Water Loss
Drop down list
State Water Board Standard
2028 Apparent Water
Loss Standard per
Unit per Day
Units for
Apparent Water
Loss
Number of
Connections
CWC 10631(d)(3)(C) In the plan due July 1, 2021, and in each update thereafter, data shall be included to show whether the urban retail water supplier met the distribution loss standards enacted by the board pursuant to Section 10608.34.Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C) NOTES:

Apparent Water Loss
Did the Water Board Calculate a
Water Loss Standard for this
Public Water System? (y/n)
If no, Supplier will not complete
this row.

Real Water Loss
Water Board's Calculated Water Loss Standards
DWR NOTES: Units of measure (AF, CCF, MG) for Water Loss MUST remain consistent with units reported in Submittal Table 2-3. The units reported in Submittal Table 2-3 are used in this table's calculations.

Public Water
System ID #
Reported in
Submittal Table 2-1
R
Add additional rows as needed.

Most Recent AWWA Water Loss Audit
Real Water
Loss Per Unit
per Day
Most Recent AWWA Water Loss Audit
Apparent Water
Loss Per Unit per
Day
Actual 2025 GPCD
(From SB X7-7
Compliance Form)
Did Supplier meet the
2020 Target in 2025?
No Individual Target 118 109 Yes NA
10608.40 Urban water retail suppliers shall report to the department on their progress in meeting their urban water use targets as part of their urban water management plans submitted pursuant to Section 10631.

Submittal Table 5-1 Retail: SB X7-7 2020 Target ProgressWater Code Section 10608.40NOTES:

Did Supplier
Achieve Targeted
Reduction for
2020?
Actual 2020 GPCD2020 Target
Regional Alliance
Target or
Individual Target?
Drop down list
DWR NOTES: Suppliers calculating a 2025 GPCD will need to complete and submit SB X 7-7 Compliance Tables to verify the use of SB X7-7 Methodologies. Suppliers that were part of a merger or consolidation since 2020 see Chapter 5 and Appendix P for guidance.

NA=Not Applicable
Check the box if the Supplier was not an Urban Water Supplier during or before the 2020 UWMP reporting cycle. Proceed to the next table.

Only for suppliers that did not meet the
Target in 2020
See DWR NOTES below.

Was Supplier part of a
merger or
consolidation since
2020?
2021 2022 2023 2024 2025
(AF) (AF) (AF) (AF) (AF)
Alluvial Basin Potable Santa Maria 10224 11010 7593 7840 7260 10,224 11,010 7,593 7,840 7,260
Add additional rows as needed
10631(4) If groundwater is identified as an existing or planned source of water available to the supplier, all of the following information:(C) A detailed description and analysis of the location, amount, and sufficiency of groundwater pumped by the urban water supplier for the past five years. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records.

Submittal Table 6-1 Retail: Groundwater Volume PumpedWater Code Section 10631(4) and 10631(4)(c) DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.NOTES
Total
Check the box if the Supplier does not pump groundwater. Proceed to the next table. Check the box if all or part of the groundwater described below is desalinated. (OPTIONAL) Groundwater Type
Drop Down List
May use each category
multiple times
Water Type
(OPTIONAL)
Drop down list
Location or Basin Name
100E%
100E%
Volume of
Wastewater
Collected from
UWMP Service
Area 2025
(AF)
City of Santa Maria Metered 6,855 City of Santa Maria WWTP, Place ID 255678 Yes
6,855
CWC 10633 (a) (a) A description of the wastewater collection and treatment systems in the supplier’s service area, including a quantification of the amount of wastewater collected and treated and the methods of wastewater disposal.

Check the box if there is no wastewater collection system.

Proceed to the next table.

NOTES:

Submittal Table 6-2 Retail: Wastewater Collected Within Service Area in 2025 Water Code Section 10633(a)
Percentage of 2025 service area population served by wastewater collection system (OPTIONAL)
Percentage of 2025 service area served by wastewater collection system (OPTIONAL) DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.

Additional Guidance. See Appendix M, Section M.21 for detailed guidance on this table.

Wastewater Collection Recipient of Collected Wastewater Total Wastewater Received from UWMP
Service Area in 2025:

Wastewater
Volume Metered
or Estimated?

OPTIONAL
Drop Down List
Name of Wastewater
Treatment Plant (WWTP) and
Place ID Number
Drop down list
Is WWTP Located
Within UWMP
Area?
Drop Down List
Add additional rows as needed
Name of Wastewater
Collection Agency
Volume Volume Volume Volume Volume
(AF) (AF) (AF) (AF) (AF) (AF) (AF)
City of Santa Maria
WWTP, Place ID 255678 6,855 6,855 Secondary, Undisinfected 6855 6,855 6,855 0 0 6,855 0 0
10633. The plan shall provide, to the extent available, information on recycled water and its potential for use as a water source in the service area of the urban water supplier...and shall include all of the following: (b) A description of the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project. 2025 Outcomes of Treated Wastewater
Check the box if no wastewater is treated or disposed of within the UWMP service area. Proceed to the next table.

Does This Plant
Treat
Wastewater
Generated
Outside the
UWMP Service
Area?
(OPTIONAL)
Drop down list
Wastewater Treatment
Plant Name and Place
ID Number
Drop down list
Treatment Level
Drop down list
Treatment Level
Drop down list
Treatment Level
Drop down list
Treatment Level
Drop down list
Treatment Level
Drop down list
Name of other
entity
Total 2025
Volume of
Water
Treated
NOTES:

Total
2025 Volume of
Wastewater
Received from
UWMP Service
Area
(As Reported in
Submittal Table
6-2 R )
Water Recycled Within
UWMP Service Area
(enter data as applicable)
Submittal Table 6-3 Retail: Wastewater Treatment and Outcomes Within UWMP Service Area in 2025Water Code Section 10633(a) DWR NOTES:Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.

IPR: Indirect Potable Reuse would have the treatment level of its end use requrement in the Level of Treatment drop-down.

Additional Guidance. See Appendix M, Section M.21 for detailed guidance on this table.

Water Recycled Outside
of UWMP Service Area
(enter data as applicable)
Effluent Discharge that is
not a Permitted Recycled
Water Use
(enter data as applicable)
Required Discharge for
Instream Flow
(enter data as applicable)
Delivered to Another Entity for Additional
Treatment
(enter data as applicable)
Add additional rows as needed
(AF)
Water Well 15 No Potable 2027 All Year Types 3,387Water Well 16 No Potable 2029 All Year Types 2,258Water Well 17 No Potable 2029 All Year Types 2,258Water Well 18 No Potable 2032 All Year Types 2,25810631 (f) Include a description of all water supply projects and water supply programs that may be undertaken by the urban water supplier to meet the total projected water use, as established pursuant to subdivision (a) of Section 10635. The urban water supplier shall include a detailed description of expected future projects and programs that the urban water supplier may implement to increase the amount of the water supply available to the urban water supplier in normal and single-dry water years and for a period of drought lasting five consecutive water years. The description shall identify specific projects and include a description of the increase in water supply that is expected to be available from each project. The description shall include an estimate with regard to the implementation timeline for each project or program.

Planned for Use in
Year Type
Drop Down List
NOTES: 1. Expected increase in water supply estimated as pumping rate (3,000 gallons per minute for Well 15 and 2,000 gallons per minute for the other wells) for one calendar year at a 70% uptime and converted to Acre-Feet (AF).

Submittal Table 6-7 Retail: Expected Future Water Supply Projects or ProgramsWater Code Section 10631 (f) DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure reported in Submittal Table 2-3.

Check the box if 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. Check the box if there are no expected future water supply projects or programs that provide a quantifiable increase to the agency's water supply.Procees to the next table.

Planned
Implementation
Year
Add additional rows as needed
Joint Project with other suppliers? Expected
Increase in
Water Supply
to Supplier
(This may be a
range)
Provide page location of narrative in the UWMP
Name of Future Projects
or Programs Drop Down List
(yes/no)
If Yes, Supplier Name
Additional Description
(as needed)
Water Type
(after treatment if
treated)
(OPTIONAL)
Drop Down list
Water Supply
Actual Volume
Total Entitlement
(OPTIONAL)
See "DWR Notes" below
(AF) (AF)
Purchased or Imported Water Potable 5,429 8,910Groundwater (not desalinated) Potable 7,260 22,036 12,689 30,946
0 0
12,689 30,946
10631. A plan shall be adopted in accordance with this chapter that shall do all of the following... (b) Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a), providing supporting and related information...

Submittal Table 6-8 Retail: Water Supplies — 2025 ActualWater Code Section 10631 (b) 2025
NOTES:DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.

Add additional rules as needed
Total
Subtotal Potable
Subtotal Non-Potable
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
Additional Description
(as needed)
Water Type
(after treatment if
treated)
(OPTIONAL)
Drop Down list
Water Supply
Reasonably
Available
Volume
Total Entitlement
(OPTIONAL)
See "DWR Notes"
below
Reasonably
Available
Volume
Total Entitlement
(OPTIONAL)
See "DWR Notes"
below
Reasonably
Available
Volume
Total Entitlement
(OPTIONAL)
See "DWR Notes"
below
Reasonably
Available
Volume
Total Entitlement
(OPTIONAL)
See "DWR Notes"
below
Reasonably
Available
Volume
Total Entitlement
(OPTIONAL)
See "DWR Notes"
below
(AF) (AF) (AF) (AF) (AF) (AF) (AF) (AF) (AF) (AF)
Purchased or Imported
Water SWP Potable 9,445 17,820 9,088 17,820 8,910 17,820 8,554 17,820 8,197 17,820 Groundwater (not
desalinated)
GW,
Twitchell, &
Return
Potable 19,480 24,699 21,740 24,467 21,740 24,352 21,740 24,120 21,740 23,888 28,925 42,519 30,828 42,287 30,650 42,172 30,294 41,940 29,937 41,708 0 0 0 0 0 0 0 0 0 0
28,925 42,519 30,828 42,287 30,650 42,172 30,294 41,940 29,937 41,708 10631. A plan shall be adopted in accordance with this chapter that shall do all of the following... (b) Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a), providing supporting and related information, including all of the following 2050 (opt)
Add additional rows as needed
Total
NOTES: 1. SWP Reasonably Available Volume is based on the Existing and 2043 50% LOC Long-term Average Scenario from the Draft DCR 2025. The percent available amount decreases from 54% under existing conditions decreasing to 48% in 2045 to represent the 2043 50% LOC. In 2050, the Reasonably Available Volume of State Water is the 75% LOC scenario from the Draft DCR 2025. Refer to CCWA 2025 UWMP for reliability information.2. Groundwater supplies are comprised of return flows, prescriptive rights, and Twitchell rights.a) Pursuant to the Stipulation, the City is entitled to recapture 65 percent of its SWP use in the Basin as Return Flows. Return flows are calculated as 65% of the Reasonably Available Volume of SWP water. b) The City's prescriptive rights are defined pursuant to the Court’s Phase 5 Statement of Decision, in which the City has been assigned 5,100 AF/YR of prescriptive right.c) Further details regarding Twitchell supply can be found in Exhibit “F” of the Stipulation and are accounted as 14,360 AF/YR.d) Groundwater entitlement has been reduced by 900-af to account for long-term groundwater leases to the Orcutt Area.e) Groundwater reasonably available volume is limited by well capacity. Total well capacity is estimated at 13,830 afy in 2025, 19,480 afy in 2030 and 21,740 afy in 2035.3. “Total Entitlement” does not account for SWP reliability or groundwater pumping limitations, but does subtract 900-af to account for Orcutt Area groundwater leases. 2030 2035 2040 2045
Subtotal Non-Potable
Subtotal Potable
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.

Submittal Table 6-9 Retail: Water Supplies — ProjectedWater Code Section 10631 (b) Projected Water Supply (Report to the Extent Practicable) 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
Additional
Detail on
Water Supply
Water Type
(after treatment if
treated)
(OPTIONAL)
Drop Down list
Average Year 2030 100%
Single-Dry Year 2030 70%
Consecutive Dry Years 1st Year 2030 77%
Consecutive Dry Years 2nd Year 2030 77%
Consecutive Dry Years 3rd Year 2030 77%
Consecutive Dry Years 4th Year 2030 77%
Consecutive Dry Years 5th Year 2030 77%
22153
22153
NOTES:
22153
22153
22153
DWR NOTES: Supplier may use multiple versions of Submittal Table 7-1 R 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 Submittal Table 7-1 R, in the "Note" section of each submittal table, state that multiple versions of Submittal Table 7-1 R are being used and identify the particular water source that is being reported in each submittal table.

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table reports the units of measure reported in Submittal Table 2-3. 28,925
20371
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 2024-
2025, use 2025
% of Average Supply
OPTIONAL Submittal Table 7-1 Retail: Basis of Water Year Data (Reliability Assessment) Available Supplies if
Year Type Repeats
Check the box if quantification of available supplies is not compatible with this table and is provided elsewhere in the UWMP.

Location: [insert location from UWMP]
Volume Available
Quantification of available supplies is provided in this table as either volume only, percent only, or both.

Average Year 2035 100%
Single-Dry Year 2035 73%
Consecutive Dry Years 1st Year 2035 79%
Consecutive Dry Years 2nd Year 2035 79%
Consecutive Dry Years 3rd Year 2035 79%
Consecutive Dry Years 4th Year 2035 79%
Consecutive Dry Years 5th Year 2035 79%
OPTIONAL 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 2024-
2025, use 2025
Available Supplies if
Year Type Repeats
Check the box if quantification of available supplies is not compatible with this table and is provided elsewhere in the UWMP.

Location: [insert location from UWMP]
Quantification of available supplies is provided in this table as either volume only, percent only, or both.

Volume Available % of Average Supply
24413
DWR NOTES: Supplier may use multiple versions of Submittal Table 7-1 R 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 Submittal Table 7-1 R, in the "Note" section of each submittal table, state that multiple versions of Submittal Table 7-1 R are being used and identify the particular water source that is being reported in each submittal table.

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table reports the units of measure reported in Submittal Table 2-3.

NOTES:
30,828
22631
24413
24413
24413
24413
Average Year 2040 100%
Single-Dry Year 2040 74%
Consecutive Dry Years 1st Year 2040 80%
Consecutive Dry Years 2nd Year 2040 80%
Consecutive Dry Years 3rd Year 2040 80%
Consecutive Dry Years 4th Year 2040 80%
Consecutive Dry Years 5th Year 2040 80%
OPTIONAL 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 2024-
2025, use 2025
Available Supplies if
Year Type Repeats
Check the box if quantification of available supplies is not compatible with this table and is provided elsewhere in the UWMP.

Location: [insert location from UWMP]
Quantification of available supplies is provided in this table as either volume only, percent only, or both.

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table reports the units of measure reported in Submittal Table 2-3.

NOTES:
30,650
22631
24413
24413
24413
24413
Average Year 2045 100%
Single-Dry Year 2045 75%
Consecutive Dry Years 1st Year 2045 80%
Consecutive Dry Years 2nd Year 2045 80%
Consecutive Dry Years 3rd Year 2045 80%
Consecutive Dry Years 4th Year 2045 80%
Consecutive Dry Years 5th Year 2045 80%
OPTIONAL 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 2024-
2025, use 2025
Available Supplies if
Year Type Repeats
Check the box if quantification of available supplies is not compatible with this table and is provided elsewhere in the UWMP.

Location: [insert location from UWMP]
Quantification of available supplies is provided in this table as either volume only, percent only, or both.

Volume Available % of Average Supply
24235
DWR NOTES: Supplier may use multiple versions of Submittal Table 7-1 R 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 Submittal Table 7-1 R, in the "Note" section of each submittal table, state that multiple versions of Submittal Table 7-1 R are being used and identify the particular water source that is being reported in each submittal table.

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table reports the units of measure reported in Submittal Table 2-3.

NOTES:
30,294
22631
24235
24235
24235
24235
Average Year 2050 100%
Single-Dry Year 2050 76%
Consecutive Dry Years 1st Year 2050 81%
Consecutive Dry Years 2nd Year 2050 81%
Consecutive Dry Years 3rd Year 2050 81%
Consecutive Dry Years 4th Year 2050 81%
Consecutive Dry Years 5th Year 2050 81%
OPTIONAL 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 2024-
2025, use 2025
Available Supplies if
Year Type Repeats
Check the box if quantification of available supplies is not compatible with this table and is provided elsewhere in the UWMP.

Location: [insert location from UWMP]
Quantification of available supplies is provided in this table as either volume only, percent only, or both.

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table reports the units of measure reported in Submittal Table 2-3.

NOTES:
29,937
22631
24235
24235
24235
24235
2030 2035 2040 2045 2050 (Opt)
(AF) (AF) (AF) (AF) (AF)
Supply totals
(autofill from Submittal Table 6-
9 R)
28,925 30,828 30,650 30,294 29,937
Use totals
(autofill from Submittal Table 4-
2 R)
14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 14,742 16,173 15,181 14,300 13,779
WSCP - supply augmentation
benefit
WSCP - use reduction savings
benefit
Revised Surplus/(shortfall)
10635. (a) Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five-year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years.

OPTIONAL Planned WSCP Actions
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
NOTES:

DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
2030 2035 2040 2045 2050 (Opt)
(AF) (AF) (AF) (AF) (AF)
Supply totals 20,371 22,631 22,631 22,631 22,631
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 6,189 7,976 7,162 6,638 6,472
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised Surplus/(shortfall)
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
10635. (a) Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in fiveyear increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years.

DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

NOTES
2030 2035 2040 2045 2050 (Opt)
(AF) (AF) (AF) (AF) (AF)
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 7,971 9,758 8,944 8,242 8,076
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised
Surplus/(shortfall)
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 7,971 9,758 8,944 8,242 8,076
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised
Surplus/(shortfall)
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 7,971 9,758 8,944 8,242 8,076
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Second year OPTIONAL WSCP Actions
Third year OPTIONAL Planned WSCP Actions
First year
Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
Revised
Surplus/(shortfall)
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 7,971 9,758 8,944 8,242 8,076
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised
Surplus/(shortfall)
Supply totals 22,153 24,413 24,413 24,235 24,235
Use totals 14,182 14,655 15,469 15,993 16,159
Surplus/(shortfall) 7,971 9,758 8,944 8,242 8,076
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised
Surplus/(shortfall)
Fifth year
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

OPTIONAL Planned WSCP Actions
OPTIONAL Planned WSCP Actions Fourth year
NOTES:
10635. (a) Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five-year increments, for a normal Total
Total Water Use (AF) 13,916
Total Supplies (AF) 22,153
8,237
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Total
Total Water Use (AF) 14,228
Total Supplies (AF) 22,153
7,925
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Total
Total Water Use (AF) 14,342
Total Supplies (AF) 22,153
7,811
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Total
Total Water Use (AF) 14,557
Total Supplies (AF) 22,153
7,596
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Total
Total Water Use (AF) 14,982
Total Supplies (AF) 22,153
7,171
2030
Surplus/Shortfall w/o WSCP Action
Surplus/Shortfall w/o WSCP Action
Surplus/Shortfall w/o WSCP Action
Revised Surplus/(shortfall)
Revised Surplus/(shortfall)
Surplus/Shortfall w/o WSCP Action
Submittal Table 7-5 Retail: Five-Year Drought Risk Assessment Water Code Section 10635(b)(3)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) Revised Surplus/(shortfall)
Surplus/Shortfall w/o WSCP Action
2026
Revised Surplus/(shortfall)
2027
2028
2029
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
10635 (b) Every urban water supplier shall include, as
part of its urban water management plan, a drought risk assessment for its water service... The drought risk
assessment shall include each of the following:
(1) 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 five consecutive water years, starting from the year following when the assessment is conducted.
(2) A determination of the reliability of each source of supply under a variety of water shortage conditions. This may include a determination that a particular source of water supply is fully reliable under most, if not all, conditions.
(3) A comparison of the total water supply sources available to the water supplier with the total projected water use for the drought period.
(4) Considerations of the historical drought hydrology, ...

NOTES:

DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) Revised Surplus/(shortfall)
Standard
Shortage
Levels
Percent Shortage
Range
Suppliers
Shortage
Levels
Percent
Shortage Range
1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 >50%
(B) An urban water supplier with an existing water shortage Submittal Table 8-1: Cross-reference for Standard vs
Supplier Shortage Levels
Water Code Section 10632(a)(3)(B)
Check the box if the Supplier uses the Standard
six levels of water shortage.

Proceed to the next table.

NOTES:
10632 (a) Every urban water supplier shall prepare and adopt a water shortage contingency plan as part of its urban water management plan that consists of each of the following elements:
(3)(A)Six standard water shortage levels corresponding to progressive ranges of up to 10, 20, 30, 40, and 50 percent shortages and greater than 50 percent shortage. Urban water suppliers shall define these shortage levels based on the suppliers’ water supply conditions, including percentage reductions in water supply, changes in groundwater levels, changes in surface elevation or level of subsidence, or other changes in hydrological or other local conditions indicative of the water supply available for use. Shortage levels shall also apply to Yes
Shortage Gap Reduction
Value
(May be a range)
(AF)
Up to 10% Expand Public Information Campaign Percentage 10 Up to 20% Expand Public Information Campaign Percentage 20 Up to 30% Expand Public Information Campaign Percentage 30 Up to 40% Exchanges Volume 5,000 Up to 50% Transfers Volume 5,000 >50% Other Purchases Volume 5,000
(E) For each action, an estimate of the extent to which the gap between supplies and demand will be reduced by implementation of the action.

Submittal Table 8-2 Retail: Supply Augmentation and Other ActionsWater Code Section 10632(a)(4)(A),(C) and (E) Add additional rows as needed
NOTES:

Is the Supplier completing this table using the standard six levels? (yes/no) 10632(a)(4) Shortage response actions that align with the defined shortage levels and include, at a minimum, all of the following:(A) Locally appropriate supply augmentation actions.(C) Locally appropriate operational changes.

How much is this going to reduce the
shortage gap?
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

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
Volume or
Percentage
Drop down
Additional Explanation or Reference
(OPTIONAL)
Yes
Shortage Gap
Reduction Value
(May be a range)
(AF)
1 Expand Public Information Campaign Percentage 1 to 51 Landscape - Limit landscape irrigation to specific times Percentage 3 to 6 1 Other - Require automatic shut of hoses Percentage <1 1 Landscape - Prohibit certain types of landscape irrigation Percentage 1 to 2 2 Increase Frequency of Meter Reading Percentage <22 Landscape - Limit landscape irrigation to specific days Percentage 2 to 5 2 Implement or Modify Drought Rate Structure or Surcharge Percentage 1 to 2 Yes 3 Decrease Line Flushing Percentage <14 Other - Prohibit use of potable water for construction and dust control Percentage <2 4 Landscape - Prohibit all landscape
irrigation Percentage 10 to 15
4 Moratorium or Net Zero Demand Increase on New Connections Percentage 5 Other - Prohibit use of potable water for construction and dust control Percentage <2 6 Other - Prohibit use of potable water for construction and dust control Percentage <2 (E) For each action, an estimate of the extent to which the gap between supplies and demand will be reduced by implementation of the action.(B) Locally appropriate demand reduction actions to adequately respond to shortages.

Volume or Percentage
Drop down
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.

Additional Explanation or Reference
(OPTIONAL)
NOTES:

Penalty, Charge, or
Other
Enforcement?
For Retail Suppliers Only
Drop Down List
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

Is the Supplier completing this table using the standard six levels? (yes/no) Submittal Table 8-3 Retail: Demand Reduction ActionsWater Code Section 10632(a)(4)(B) and (E) Add additional rows as needed
How much is this going to reduce the
shortage gap?
10632(a)(4) Shortage response actions that align with the defined shortage levels and include, at a minimum, all of the following:

City Name 60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Central Coast Water
Authority Yes Yes
Golden State Water
Company
Yes Yes
Laguna County
Sanitation District
Yes Yes
City of Guadalupe Yes Yes
Nipomo Community
Services District
Yes Yes
Santa Maria Valley Water
Conservation District
Yes Yes
San Luis Obispo County
Flood Control and Water
Conservation District
Yes Yes
Santa Barbara County
Flood Control District Yes Yes
County Name
Drop Down List
60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Santa Barbara County Yes Yes
CWC 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.

CWC 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.

Submittal Table 10-1 Retail: Notification to Cities and Counties Water Code Section 10621(b) and 10642
Add additional rows as needed
Add additional rows as needed
NOTES:

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix D – Central Coast Water Authority Future
Projections
Eric Friedman
Chairman
Jeff Clay
Vice Chairman
Ray A. Stokes
Executive Director
Brownstein Hyatt
Farber Schreck
General Counsel
Member Agencies
City of Buellton
Carpinteria Valley
Water District
City of Guadalupe
City of Santa Barbara
City of Santa Maria
Goleta Water District
Montecito Water District
Santa Ynez River Water
Conservation District,
Improvement District #1
Associate Member
La Cumbre Mutual
Water Company
255 Industrial Way
Buellton, CA 93427
(805) 688-2292
Fax (805) 686-4700 www.ccwa.com
April 17, 2026
Joshua Reynolds
Water Resources Deputy Director
City of Santa Maria Utilities Department
[email protected]
Delivered Via Email
Subject: Existing and Future State Water Project Water Supply Projections Dear Joshua Reynolds:

The Central Coast Water Authority (CCWA) is classified as a wholesale urban water supplier and is preparing its 2025 Urban Water Management Plan (UWMP). CCWA’s UWMP includes projections of State Water Project (SWP) water supplies available to be delivered to CCWA Participants. CCWA’s SWP supply projections were developed through review of the Department of Water Resources’ (DWR) Draft State Water Project Delivery Capability Report 2025 (Draft DCR) and through coordination with State Water Contractors, Inc. (SWC). A summary of CCWA’s SWP water supply projections under various hydrologic scenarios for both existing (2025) and future conditions (2043) is provided in Table 1 on the attached page. These projections may be used by CCWA Participants for long term water supply planning efforts.

Also, as required by the UWMP Act, retail urban water suppliers that rely upon a wholesale agency for a source of water supply must provide the wholesale water agency with water use projections for that source of water in five-year increments for 20 years.

Accordingly, CCWA would appreciate your agency providing this information.

Sincerely,
David R. Beard
Deputy Director of Operations and Engineering
Attachment
Year Long Term
Average
Single
Dry Year
5-Year
Drought
Year 1: 1929
5-Year
Drought
Year 2: 1930
5-Year
Drought
Year 3: 1931
5-Year
Drought
Year 4: 1932
5-Year
Drought
Year 5: 1933
2025 54% 5% 15% 15% 15% 15% 15%
2030 53% 5% 15% 15% 15% 15% 15%
2035 51% 5% 15% 15% 15% 15% 15%
2040 50% 5% 15% 15% 15% 15% 15%
2045 48% 5% 14% 14% 14% 14% 14% 1
Source: Draft State Water Project Delivery Capability Report 2025 - Table 6-2.

Table 1: Central Coast Water Authority State Water Project Water Supply Projections1

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix E – Section 4.2, Regional Recycled Water –
Excerpt from Santa Barbara County Long Term Water
Supply Report

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix F – Reduced Delta Reliance Analysis
City of Santa Maria
Reduced Delta Reliance Analysis
-1-
G:\Santa Maria_City of 3757\375721001-UWMP\200 Technical\202 General\Reduced Delta Reliance - Santa Maria - revised.docx The Sacramento-San Joaquin Delta Reform Act of 2009 established a new state agency, the Delta Stewardship Council (DSC), to develop a Delta Plan that ensures coordinated action at the state, federal and local levels in meeting ecosystem health and water supply reliability needs in the Sacramento-San Joaquin Delta. The Delta Plan, adopted by the DSC in 2013, includes a policy (WR-P1) to Reduce Reliance on the Delta Through Improved Regional Water Self Reliance. Projects that are covered actions affecting the Delta (e.g., transfers of water from North of the Delta) must demonstrate that they are consistent with the policies in the Delta Plan, including WR-P1.

WR-P1 subsection (a) states that:
a) Water shall not be exported from, transferred through, or used in the Delta if all of the following apply:
1) One or more water suppliers that would receive water as a result of the export, transfer or use have failed to adequately contribute to reduced reliance on the Delta and improved regional self-reliance consistent with all of the requirements listed in paragraph (1) of subsection (c); 2) That failure has significantly caused the need for the export, transfer, or use; and
3) The export, transfer, or use would have a significant adverse environmental impact in the Delta.

WR P1 subsection (c)(1) defines what adequately contributing to reduced reliance on the Delta means in terms of (a)(1) above as:
c) Water suppliers that have done all the following are contributing to reduced reliance on the Delta and improved regional self-reliance and are therefore consistent with this policy:

A. Completed a current Urban or Agricultural Water Management Plan (Plan) which has been reviewed by the California Department of Water Resources for compliance with the applicable requirements of Water Code Division 6, Parts 2.55,

2.6 and 2.8;
B. Identified, evaluated and commenced implementation, consistent with the implementation schedule set forth in the plan, of all programs and projects included in the Plan that are locally cost effective and technical feasible which reduced reliance on the Delta; and
C. Included in the Plan, commencing in 2015, the expected outcome for measurable reduction in Delta reliance and improvement in regional self-reliance shall be reported in the Plan as the reduction in the amount of water used, or in the percentage of water used, from the Delta watershed. For purposes of reporting, water efficiency is considered a new source of supply, consistent with Water Code section 1011(a).

City of Santa Maria
Reduced Delta Reliance Analysis
-2-
G:\Santa Maria_City of 3757\375721001-UWMP\200 Technical\202 General\Reduced Delta Reliance - Santa Maria - revised.docx The analysis provided here provides documentation related to compliance with WR-P1 for the City of Santa Maria. The approach taken is somewhat simplified from the detailed analysis identified in Appendix C of DWR’s Urban Water Management Plan Guidebook (Guidebook Appendix C). The analysis uses the following steps:

1. Identify Delta Water Supply Baseline;

2. Qualitatively identify water management measures and increased regional self-reliance within the City of Santa Maria;

3. Indicate projected use of Delta water supplies within the City of Santa Maria for projection periods; and

4. Quantify the reduction in reliance on the Delta for projection periods.

Delta Water Supply Baseline
The Sacramento-San Joaquin Delta Reform Act went into effect in 2010, which is proposed for use as the baseline. The most representative analysis of the Delta supply available to Central Coast Water Authority (CCWA) as of 2010 is DWR’s State Water Project (SWP) 2009 Delivery Reliability Report (DRR). The 2009 SWP DRR identified a SWP average reliability of 60% of SWP contractors’ Table A amounts. Based on CCWA’s Table A Allocation through the Santa Barbara County Flood Control and Water Conservation District’s (SBCFCWCD) contract with DWR, the estimated baseline supply available to CCWA is 27,292 acre-feet, of which 10,692 acre-feet is available for the City of Santa Maria. This Delta water supply baseline will be maintained for purposes of both the 2015 UWMP and the 2020 UWMP.

Water Management Measures and Increased Regional Self Reliance The SBFCWCD entered into an agreement with DWR in February 1963 entitled “Water Supply Contract.”
6 This contract secured the SBFCWCD’s participation in the SWP. In 1981, the SBFCWCD assigned certain rights and responsibilities of the SWP Water Supply Contract to local water purveyors in a series of agreements entitled “Water Supply Retention Agreements” (WSRA). Even though the SBFCWCD assigned rights of the SWP Water Supply Contract to CCWA, the SBFCWCD has remained the responsible contracting entity recognized by DWR.

The local water purveyors that entered into the Water Supply Retention Agreements ultimately formed CCWA through a Joint Exercise of Powers Agreement in 1991.4 CCWA was specifically formed for the purpose of designing, building and operating the facilities needed to deliver water from the SWP to the various entities entitled to receive that water in Santa Barbara County. Each CCWA participant entered into a Water Supply Agreement with CCWA which assigned the rights they derived from their WSRA to CCWA.

Since the SBFCWCD is the recognized contracting entity in the original SWP Water Supply Contract, CCWA and the SBFCWCD entered into an agreement entitled “Transfer of Financial Responsibility Agreement” in 1991. In this agreement, the SBFCWCD delegated specific responsibilities to CCWA which include making CCWA financially responsible for designing, constructing and operating the Coastal Branch of the SWP.

City of Santa Maria
Reduced Delta Reliance Analysis
-3-
G:\Santa Maria_City of 3757\375721001-UWMP\200 Technical\202 General\Reduced Delta Reliance - Santa Maria - revised.docx The Transfer of Financial Responsibility Agreement did not delegate water conservation responsibilities from the SBFCWCD to CCWA. Rather, the SBFCWCD retained the responsibility to develop a regional water conservation program for the benefit of the water purveyors in Santa Barbara County. The SBFCWCD’s regional water conservation program, known as the Regional Water Efficiency Program (RWEP), was established in December 1990. The individual CCWA Santa Barbara County Project Participants directly participate in the RWEP. Organizationally, both the RWEP and the SBFCWCD are part of the County of Santa Barbara Water Resource Division.

The CCWA Santa Barbara County Project Participants, including the City of Santa Maria, work within the framework of the County of Santa Barbara’s water conservation program to supplement their own programs. The RWEP provides information and assistance to 18 local water purveyors within the County.

The RWEP provides coordination for cooperative efforts among purveyors, acts as a clearinghouse for information on water efficiency technology, manages specific projects, and monitors local, state, and national legislation concerning efficient water use. The RWEP is operated within the Santa Barbara County Water Agency, whose staff work cooperatively with all local water purveyor staff to implement conservation projects throughout the County. Individual water purveyors work with County staff on projects, as well as implement their own conservation programs within their service areas.

The most recent annual report documenting the efforts of the RWEP is presented in the UWMP Appendix G. The program has seven focus areas of conservation activities within Santa Barbara County and they are:
• School Education
• Public Information
• Commercial, Industrial, and Institutional
• Landscape/Outdoor Water Use
• Residential/Indoor Water Use
• Agricultural
• Coordination/Administration
Projected use of Delta Water Supplies by the City of Santa Maria Based on projected City of Santa Maria water use and the availability of other resources, average City of Santa Maria use of imported water from CCWA is projected to remain below historical use, which averaged 9,943 acre-feet per year between calendar years 1998-2020. This projected water use reflects the water conservation and water management actions implemented by the City of Santa Maria independently and as part of the County of Santa Barbara’s RWEP water conservation program. With its projected use of imported water remaining below its 2010 water supply baseline of 10,692 acre-feet, the City of Santa Maria is maintaining a net reduction in reliance on Delta water supplies of 749 acre-feet per year.

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix G – 2024 Water Quality Report
2065 East Main Street • Santa Maria, CA 93454
TDD 800-735-2929 (English) • 800-855-3000 (Español)
Este informe contiene información muy importante sobre su agua para beber. Tradúzcalo ó hable con alguien que lo entienda bien.

This report provides information regarding
the quality of water for the City of Santa
Maria during 2024. Included are details
about where your water comes from,
what it contains, and how it compares to
State standards. Through planning and
operational efficiency, the City continues
to provide reliable drinking water.

WATER

QUALITY
REPORT
WATER

QUALITY
REPORT
W City of Santa Maria 2024 ATER SUPPLY: The City of Santa Maria (“City”) is committed to producing the highest
quality drinking water from two sources of
supply: City water wells located in the Santa Maria
Airport area, and State Water treated at the Polonio
Pass Water Treatment Plant by the Central Coast Water
Authority and delivered to the City via the Coastal
Branch Aqueduct. In 2024, the City received about 38
percent of its water from the State Water Project.

WATER QUALITY: The City routinely checks water
quality from the source to your home. Please see the
other side of this brochure, which summarizes test
results from 2016-2024 and shows that the City met all
State and Federal drinking water standards in 2024.

Drinking water, including bottled water, may
reasonably be expected to contain
at least small amounts of some
contaminants. The presence of
contaminants does not necessarily
indicate that water poses a health
risk. More information about
contaminants and potential health
effects can be obtained by calling the
U.S. Environmental Protection Agency
(“USEPA”) Safe Drinking Water Hotline
(1-800-426-4791).

In order to ensure that tap water
is safe to drink, the USEPA and the
State Water Resources Control Board
prescribe regulations that limit the
amount of certain contaminants
in water provided by public water
systems. The U.S. Food and Drug
Administration and California law
also establish limits for contaminants
in bottled water that provide the same protection for
public health.

Some people may be more vulnerable to
contaminants in drinking water than the general
population. Immuno-compromised persons, such
as persons with cancer undergoing chemotherapy,
persons who have undergone organ transplants, people
with HIV/AIDS or other immune system disorders,
some elderly, and infants can be particularly at risk
from infections. These people should seek advice
about drinking water from their health care providers.

USEPA/Centers for Disease Control (CDC) guidelines
on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are
available from the Safe Drinking Water Hotline.

SOURCE WATER ASSESSMENT: A drinking water
source assessment for the City was completed in
March 2014. The City’s water sources were considered
most vulnerable to the following activities: runoff and leaching from fertilizer use, septic tanks, sewage,
and erosion of natural deposits. You may request
a summary of the assessment at the City Utilities
Department, 2065 East Main Street, Santa Maria, CA
93454, or by calling (805) 925-0951 extension 7270.

WATER SYSTEM SECURITY: Multiple levels of safety
are implemented to protect the City’s drinking water
system. These measures are part of ongoing operations
and ensure the treatment and reliable delivery of water.

CONTAMINANTS: The sources of
drinking water (both tap water and
bottled water) include rivers, lakes,
streams, ponds, reservoirs, springs,
and wells. As water travels over
the surface of the land or through
the ground, it dissolves naturallyoccurring materials and, in some cases, radioactive material, and can
pick up substances resulting from the
presence of animals or from human
activity. Contaminants that may be
present in source water include:

Microbial contaminants, such
as viruses and bacteria that may
come from sewage treatment plants,
septic systems, agricultural livestock
operations, and wildlife;
Inorganic contaminants, such
as salts and metals that can be naturally-occurring
or result from urban storm water runoff, industrial
or domestic wastewater discharges, oil and gas
production, mining, or farming;
Pesticides and herbicides that may come from
a variety of sources such as agriculture, urban
stormwater runoff, and residential uses;
Organic chemical contaminants, including
synthetic and volatile organic chemicals that are
byproducts of industrial processes and petroleum
production, which may also come from gas stations,
urban stormwater runoff, agricultural applications and
septic systems; and
Radioactive contaminants that can be naturally
occurring or the result of oil and gas production and
mining activities.

ABOUT LEAD: If present, elevated levels of lead can
cause serious health problems, especially for pregnant
women and young children. Lead in drinking water is
primarily from materials and components associated
with service lines and plumbing. The City is responsible for providing high quality drinking water, but cannot
control the variety of materials used in plumbing
components. When your water has been sitting for
several hours, you can minimize the potential for lead
exposure by flushing your tap for 30 seconds to 2
minutes before using water for drinking or cooking. If
you are concerned about lead in your water, you may
wish to have your water tested. Information on lead
in drinking water, testing methods, and steps you can
take to minimize exposure is available from the Safe
Drinking Water Hotline or at https://epa.gov/lead.

To access and view available information about your
service line, visit the interactive map located on the
City’s website at: https://bit.ly/leadservicelineinventory ABOUT NITRATE: Nitrate levels may rise quickly for
short periods of time because of rainfall or agricultural activity. Nitrate in drinking water at levels above
10 mg/L is a health risk for infants of less than six
months of age. Such nitrate levels in drinking water
can interfere with the capacity of the infant’s blood to carry oxygen, resulting in a serious illness; symptoms
include shortness of breath and blueness of the skin.

Nitrate levels above 10 mg/L may also affect the ability of the blood to carry oxygen in other individuals, such as pregnant women and those with certain specific
enzyme deficiencies. If you are caring for an infant or are pregnant, you should ask advice from your health
care provider.

COMMENTS? Your comments are important to the
City, and may be heard at any regular meeting of the
Santa Maria City Council, on the first and third Tuesday of each month at 5:30 p.m. in the City Hall Council
Chambers, 110 East Cook Street, Santa Maria. n
For questions related to water quality, call the Water
Resources Manager at (805) 925-0951 extension 7270.

This notice is being sent to residents by the City of Santa Maria. State Water System ID#: 4210011.

Date distributed: June 2025.
(805) 925-0951 ext. 7270 n www.cityofsantamaria.org
Santa Maria’s
original water
system, 1880

ABBREVIATIONS, NOTES, AND DEFINITIONS
Abbreviations:

AL = Regulatory Action Level
LRAA = Locational Running Annual Average
NA = Not Applicable
ND = Not Detected
NL = Notification Level
NTU = Nephelometric Turbidity Units
ppb = parts per billion, or micrograms per liter (µg/L) ppm = parts per million, or milligrams per liter (mg/L) pCi/L = picocuries per liter (a measure of radioactivity) TT = Treatment Technique
µS/cm = microsiemens per centimeter (unit of specific conductance of water) Notes:
(a) Turbidity (NTU) measures the cloudiness of the water and is a good indicator of the effectiveness of State Water Project filtration and is listed as a Primary Standard. The performance standard is less than 0.3 NTU in 95% of measurements taken every 15 minutes and not to exceed 1.0 NTU at any time.
(b) Aluminum also has a Secondary MCL of 200 ppb.
(c) Total coliform MCL: No more than 5.0% of the monthly samples may be Total Coliform positive. E. coli MCL is 0.
(d) For fluoridated water systems,target fluoride levels are set by State Water Resources Control Board Division of Drinking Water.
(e) The City of Santa Maria reinstated adding fluoride to the water supply in August 2020.
(f) Compliance based on the locational running annual average (LRAA) of distribution system samples.
(g) Turbidity, as delivered, is listed in the Secondary Standards and is considered an aesthetic standard.
(h) Water quality information from purchased State Project Water includes samples collected in 2024.
(i) Water quality information from individual wells includes samples collected from 2016–2024.

No public schools requested to be tested for lead in 2024.

Definitions:

Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs are set to protect the odor, taste, and appearance of drinking water.

Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health.

MCLGs are set by the U.S. Environmental Protection Agency.

Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to health.

Primary Drinking Water Standard (PDWS): MCLs, MRDLs, and treatment techniques for contaminants that affect health, along with their monitoring and reporting requirements.

Public Health Goal (PHG): The level of a contaminant in drinking water below which there is no known or expected risk to health. PHGs are set by the California Environmental Protection Agency.

Regulatory Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.

Secondary Drinking Water Standards (SDWS): MCLs for contaminants that affect taste, odor, or appearance of the drinking water. Contaminants with SDWSs do not affect your health at the MCL level.

Treatment Technique (TT): A required process intended to reduce the level of a contaminant in drinking water.

PRIMARY DRINKING WATER STANDARDS--Mandatory Health-Related Standards State PHG
Parameter Units MCL (MCLG) RANGE AVERAGE RANGE AVERAGE MAJOR SOURCES Turbidity (a) NTU 0.04 - 0.15 100% < 0.3 N/A N/A Soil runoff Aluminum (b) ppb 1000 600 < 50 - 71 ND (< 50) ND (< 50) ND (< 50) Erosion of natural deposits; residual from some treatment processes Chromium (hexavalent) ppb 10 0.02 0.099 0.099 <1 - 1.3 1.1 Discharge from electroplating factories, leather tanneries, wood preservation, chemical synthesis, refractory production, and textile manufacturing facilities; erosion of natural deposits
Gross Alpha Particle Activity pCi/L 15 (0) ND (< 3) ND (< 3) < 3.0 - 3.4 3.1 Decay of natural and man-made deposits Uranium pCi/L 20 0.43 ND (< 1) ND (< 1) < 1.0 - 3.1 1.8 Erosion of natural deposits

DISTRIBUTION SYSTEM MONITORING
Total Chlorine Residual ppm MRDL = 4.0 MRDLG = 4.0 Measure of the disinfection of the water Total Coliform Bacteria, E. coli (c) NA see note (c) (0) Naturally present in the environment; human and animal fecal waste Fluoride (treated water) (d) (e) ppm 2 1 Erosion of natural deposits; additive to promote strong teeth Total Trihalomethanes (f) ppb 80 NA Byproduct of drinking water chlorination Haloacetic Acids (f) ppb 60 NA Byproduct of drinking water chlorination Nitrate as NO3-N ppm 10 10 Leaching from fertilizers; erosion of natural deposits SECONDARY DRINKING WATER STANDARDS--Aesthetic Standards Chloride ppm 500 NA Runoff/leaching from natural deposits; seawater influence Iron ppb 300 NA ND (< 10) ND (< 10) ND (< 100) ND (< 100) Leaching from natural deposits; industrial wastes Odor Threshold Units 3 NA Naturally-occurring organic materials Specific Conductance µS/cm 1600 NA Substances that form ions when in water; seawater influence Sulfate ppm 500 NA Runoff/leaching from natural deposits; industrial wastes Total Dissolved Solids ppm 1000 NA Runoff/leaching from natural deposits Turbidity (a) NTU 5 NA Soil runoff
ADDITIONAL PARAMETERS (Unregulated)
Alkalinity (Total) as CaCO3 ppm NA NA Runoff/leaching from natural deposits; seawater influence Boron ppb NL = 1000 NA NA NA 110 - 180 142 Runoff/leaching from natural deposits; seawater influence Calcium ppm NA NA Runoff/leaching from natural deposits; seawater influence Hardness (Total) as CaCO3 ppm NA NA Leaching from natural deposits Magnesium ppm NA NA Runoff/leaching from natural deposits; seawater influence pH pH units NA NA Runoff/leaching from natural deposits; seawater influence Potassium ppm NA NA Runoff/leaching from natural deposits; seawater influence Sodium ppm NA NA Runoff/leaching from natural deposits; seawater influence Vanadium ppb NL = 50 NA NA NA 3.0 - 3.7 3.4 Runoff/leaching from natural deposits; combustion of fossil fuels LEAD AND COPPER SAMPLING PROGRAM - SAMPLING OCCURRED IN SEPTEMBER 2022 Samples 90th Percentile
Parameter Units Collected Level Detected AL PHG MAJOR SOURCES Copper ppb 52 200 1300 300 Plumbing system corrosion; erosion of natural deposits Lead ppb 52 < 5.0 15 0.2 Plumbing system corrosion; erosion of natural deposits Average = 2.1 (Range = 0.40 - 3.8)

PURCHASED STATE LOCAL
PROJECT WATER (h) GROUNDWATER (i)
TT = 0.3
Average = 2.0 (Range = 0.12 - 3.3)
Average = 0% (Range = NA)
Average = 0.86 (Range = 0.60 - 1.2)
Highest LRAA = 23.4 (Range = 8.6 - 29.9)
Highest LRAA = 7.5 (Range = 3.3 - 9.3)
Average = 2.8 (Range = 2.7 - 2.9)
Average = 37 (Range = 34 - 39)
Average = 2 (Range = 1 - 2)
Average = 830 (Range = 460 - 1000)
Average = 265 (Range = 240 - 290)
Average = 630 (Range = 570 - 710)
Average = 0.19 (Range = < 0.1 - 0.71)
Average = 148 (Range = 72 - 180)
Average = 90 (Range = 83 - 98)
Average = 388 (Range = 360 - 420)
Average = 40 (Range = 36 - 43)
Average = 7.5 (Range = 6.9 - 8.0)
Average = 53 (Range = 52- 54)
Number of Sites
Exceeding AL
0 0
2024 Water Quality Information

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix H – 2026 Water Shortage Contingency Plan
City of Santa Maria
Water Shortage Contingency Plan
2026 Update
September 2026
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City of Santa Maria Water Shortage Contingency Plan
Table of Contents
Chapter 1 – Purpose of Plan ........................................................................................................ 2 Chapter 2 – Water Supply Reliability Analysis......................................................................... 3

2.1 Background................................................................................................................... 3

2.2 Sources of Supply ......................................................................................................... 3

2.3 Supply Availability....................................................................................................... 4

2.4 Improvements in Supply and Reliability....................................................................... 5 Chapter 3 – Annual Water Supply and Demand Assessment Procedures.............................. 6

3.1 Decision Making Process.............................................................................................. 6

3.2 Data Inputs and Assessment Methodology ................................................................... 7

3.3 Infrastructure Capabilities and Constraints ................................................................... 8 Chapter 4 – Water Shortage Stages............................................................................................ 9 Chapter 5 – Shortage Response Actions................................................................................... 10

5.1 Response Actions by Water Shortage Stage................................................................ 10

5.2 Catastrophic Supply Interruption................................................................................ 11

5.3 Seismic Risk Assessment and Mitigation Plan............................................................ 11

5.4 Locally Appropriate Supply Augmentation Actions................................................... 12

5.5 Locally Appropriate Operational Changes................................................................. 13

5.6 Gap Between Supply and Demand.............................................................................. 13 Chapter 6 – Community Outreach............................................................................................ 14 Chapter 7 – Customer Compliance and Enforcement ............................................................ 15 Chapter 8 – Legal Authority of the Plan .................................................................................. 16

8.1 Declaring a Water Shortage Emergency...................................................................... 16

8.2 Coordination with other Cities and Counties............................................................... 16 Chapter 9 – Revenue Reductions and Expense Increases....................................................... 17

9.1 Potential Revenue Reductions and Expense Increases................................................ 17

9.2 Mitigation Actions ...................................................................................................... 17

9.3 Cost Compliance......................................................................................................... 17 Chapter 10 – Monitoring and Reporting Requirements......................................................... 18 Chapter 11 – Monitoring and Evaluating the Plan.................................................................. 19 Chapter 12 - References ............................................................................................................. 20 ii | P a g e
List of Tables
Table 1: Water Shortage Contingency Plan Requirements..............................................................2 Table 2: Planned Water Supplies for the City of Santa Maria.........................................................4 Table 3: City of Santa Maria Water Supply – Projected Reliability for 2045.................................4 Table 4: City of Santa Maria Projected Population and Water Demand .........................................7 Table 5: Total City of Santa Maria Demand....................................................................................7 Table 6: Water Shortage Stages.......................................................................................................9 City of Santa Maria Water Shortage Contingency Plan
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Definitions
The following words and phrases whenever used in the Water Shortage Contingency Plan will have the meaning defined in this Section:
“Customer” means any person, business, corporation, public or private entity, public or private association, public or private agency, government agency or institution, school district, college, or any other user of water provided by the City of Santa Maria. “Days” are defined as calendar days, unless otherwise indicated. “City” means the City of Santa Maria.
“Water Conservation” means the efficient management of water resources for beneficial uses, preventing waste or accomplishing additional benefits with the same amount of water. “Water” will refer to potable water, unless otherwise specified. “WSCP” refers to this City of Santa Maria Water Shortage Contingency Plan as readopted or amended from time to time.

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Chapter 1 – Purpose of Plan
Water shortage contingency planning is a strategic planning process to prepare for and respond to water shortages. Effective planning and preparation helps the City of Santa Maria (City) maintain reliable supplies and reduce the impacts of supply interruptions.

The City first adopted its 2005 Water Shortage Contingency Plan (WSCP) in 2007 and updated that plan over time to reflect new requirements and water supply conditions. This update to the WSCP was prepared in conjunction with the City’s 2025 Urban Water Management Plan.

The purpose of the City’s WSCP is to provide a methodology for analyzing water supply reliability, to establish water shortage levels, identify appropriate response actions, and document protocols for enforcing the WSCP. The City’s policy is to maximize efficient use of its water resources and adequately maintain water supply under varying levels of availability, with a focus on ensuring public health and safety.

This WSCP was prepared according to requirements in Sections 10632 & 10635 of the California Water Code. Table 1showsthe required components of a WSCP, the relevant water code section, and where they are found in this document.

Table 1: Water Shortage Contingency Plan Requirements
Topic CA Water Code Section WSCP Section
Water Supply Reliability Analysis WC 10632 (a.1) Section 2 Annual Assessment Procedures WC 10632 (a.2) Section 2
Water Shortage Levels WC 10632 (a.3) Section 3
Shortage Response Actions WC 10632 (a.4) Section 4
Communication Protocols WC 10632 (a.5) Section 5
Compliance and Enforcement WC 10632 (a.6) Section 6
Legal Authority WC 10632 (a.7) Section 7
Financial Consequences of WSCP WC 10632 (a.8) Section 8 Monitoring and Reporting WC 10632 (a.9) Section 9
WSCP Refinement Procedures WC 10632 (a.10) Section 10
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Chapter 2 – Water Supply Reliability Analysis

2.1 Background
The City of Santa Maria is located in the Santa Maria Valley of Santa Barbara County, approximately 180 miles north of Los Angeles. The City has cool winters and mild summers with an average annual rainfall of about 13 inches. The rainy season is from November to March and low humidity occurs from the months of May to October. The moderately hot and dry weather during the summer months typically results in moderately high-water demand during this time.

The City provides water distribution services to Santa Maria and some nearby areas outside of city limits. The City’s population that is served within the boundaries is estimated at 112,208 in 2025 and is expected to reach 131,788 by 2050. The service area boundary includes developed and undeveloped land to the west, south, and east of the City’s center. A portion of the City’s service area lies outside the Santa Maria city limits, within unincorporated areas of Santa Barbara County. The service area is primarily characterized by residential and commercial land use.

2.2 Sources of Supply
Historically, the City has pumped water from the Santa Maria Valley Groundwater Basin (Basin), DWR Basin No. 3-12, as its primary water supply. The City began receiving State Water Project (SWP) water from the Central Coast Water Authority (CCWA) in 1997. The SWP water augments local groundwater supplies and is generally higher quality water.

The City’s rights to rely on Basin water resources for pumping and recharge are governed by a judgement and settlement agreement (Stipulation) finalized before the Santa Clara County Superior Court (Santa Maria Valley Water Conservation District vs. City of Santa Maria, et al., Case no. 770214).

Groundwater supply information is based on this case, commonly known as the “Santa Maria Groundwater Adjudication”.

Under the Santa Maria Groundwater Adjudication, the City derives its water supply from: (1) imported water from the SWP and the associated return flows that may be recaptured from the Santa Maria Groundwater Basin; (2) assigned rights to groundwater from the Santa Maria Groundwater Basin; and (3) a share of the yield of Twitchell Reservoir operations. The imported water supply is obtained from the SWP through a contract with CCWA. Groundwater is currently pumped from a total of seven active groundwater wells in the Basin. The City’s usable wells have a total normal year active capacity of about 13,830 acre-feet per year (ac-ft/yr). The average production between 2021 and 2025 was 8,780 ac-ft/yr. The City is actively working to increase groundwater pumping capacity to access the City’s water rights and allow the well field to meet summer demands if State Water is unavailable.

Water supply availability has not been affected by season of the year, nor is it expected to be impacted by season in the future. There is no evidence of decreased well field production in the summer months.

For State Water, allocation is based on the calendar year. Early predictions of the final allocation are released around the start of the calendar year and tend to be conservative estimates. The final allocation may not be issued until June; however, careful balancing of water resources, groundwater, carryover water, and State Water allow for the water use to be spread throughout the year.

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Table 2: Planned Water Supplies for the City of Santa Maria Source Total AFY
Entitlement(3)
Reasonably Available Volume (AFY)
2030 2035 2040 2045 2050
Available SWP Water(1) 17,820 9,445 9,088 8,910 8,554 8,197 Groundwater(2) 30,143 19,480 21,740 21,740 21,740 21,740 Total 47,963 28,925 30,828 30,650 30,294 29,937
Notes:

1. SWP Reasonably Available Volume is based on the Draft DCR 2025 and information provided by CCWA, see 2025 UWMP.

2. Groundwater supplies are comprised of return flows, prescriptive rights, and Twitchell rights. a) Pursuant to the Stipulation, the City is entitled to recapture 65 percent of its SWP use in the Basin as Return Flows. Return flows are calculated as 65% of the Reasonably Available Volume of SWP water, see 2025 UWMP. b) The City's prescriptive rights are defined pursuant to the Court’s Phase 5 Statement of Decision, in which the City has been assigned 5,100 AF/YR of prescriptive right. c) Further details regarding Twitchell supply can be found in Exhibit “F” of the Stipulation and are accounted as 14,360 AF/YR.
d) Groundwater entitlement has been reduced by 900-AF to account for long-term groundwater leases to the Orcutt Area.
e) Groundwater reasonably available volume is limited by well capacity. Total well capacity is estimated at 13,830 AF/YR in 2025, 19,480 AF/YR in 2030 and 21,740 AF/YR in 2035.

3. “Total Entitlement” does not account for SWP reliability or groundwater pumping limitations but does subtract 900- AF to account for Orcutt Area groundwater leases.

2.3 Supply Availability
The City’s water supply portfolio reliability for 2045 under various drought scenarios is presented in Table 3. This table shows projected 2045 normal water year supply as well as potential impacts of single-year and multi-year drought on the 2045 reasonably available water supply.

Table 3: City of Santa Maria Water Supply – Projected Reliability for 2045 Source
Normal
Water
Year
(AFY)
SingleDry Water
Year
(AFY)
Multiple-Dry Water Years (AFY)
Year 1 Year 2 Year 3 Year 4 Year 5
Available SWP Water 8,554 891 2,495 2,495 2,495 2,495 2,495 Groundwater(1) 21,740 21,740 21,740 21,740 21,740 21,740 21,740 Total 30,294 22,631 24,235 24,235 24,235 24,235 24,235
Notes:
1: (a) Groundwater pumping is limited by projected well capacity not groundwater entitlements (i.e., variable return flow availability). Refer to Chapter 6 of 2025 UWMP for groundwater entitlements and reliably available supply discussion. (b) Groundwater return flows are based on five-year rolling average of imported water. Impacts to singledry year SWP imports will not affect availability of return flows for previous five-year average. (c) Multiple-dry year reliability of groundwater return flows considers the previous five-year rolling average of SWP imports. These projections assume five years of normal water years before the beginning of the multiple-dry year period.

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The Stipulation requires that the Management Area Engineer prepare an annual report that summarizes the results of the Monitoring Program, changes in groundwater supplies, and any threats to groundwater supplies. The report indicates whether there is a shortage of groundwater in the Santa Maria Valley Management Area. The 2024 Annual Report of Hydrogeologic Conditions, Water Requirements, Supplies and Disposition Santa Maria Valley Management Area was prepared by Luhdorff and Scalmanini Consulting Engineers. The report found that the Basin did not meet the conditions as required in the Stipulation to declare a condition of severe water shortage. Refer to Section 3.1 of this WSCP for more information.

2.4 Improvements in Supply and Reliability
The City has installed a fixed base meter reading system. This meter reading system can help identify customer side leaks and thereby reduce demand on the system.

The City continues to work with the community to encourage water conservation on a voluntary basis.

Water conservation activities include advertisements, water conservation kits, soil moisture meters, shower timers, low-flow shower heads, toilet tank banks, and other promotional items.

The City is working to increase groundwater pumping capability to manage supply reliability and meet City needs in the event that the SWP is unavailable either from drought or system failure.

These projects and programs improve water management, reduce demands, and assist the City in meeting municipal water needs in acute or chronic water shortage conditions.

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Chapter 3 – Annual Water Supply and
Demand Assessment Procedures

3.1 Decision Making Process
Chronic Water Shortages
Chronic water shortages can be determined by calculating the difference between anticipated demand and available supply. Groundwater rights and Twitchell yield are considered to be 100 percent available in years when the annual report of hydrogeologic conditions indicates that there is no water shortage in the Santa Maria Valley Management Area. In years when the annual report indicates a shortage, a percentage of available supply will be determined for all groundwater pumpers based on the annual report findings. The City will determine anticipated demand and compare the demand to the available water supply to determine the necessary level of reduction to ensure sufficient City water supply for the demand. If the anticipated City demand is less than the available supply, then no chronic water shortage exists, and no demand reduction is necessary. Otherwise, the City Council will declare a chronic water shortage and implementation of this Water Shortage Contingency Plan.

Short-term Water Shortages
Short-term water shortages occur when water supplies cannot be delivered to meet demand, because of electrical or mechanical failures of production or delivery equipment, excess demand such as fire flows, or because of water quality issues. These can be caused by equipment failure, as a result of a catastrophic event, such as an earthquake, windstorm, rainstorm, fire, terrorist activity, or water quality issues. To determine if a short-term watershortage exists, the City will calculate the difference between the capacity of the available production facilities and the latest water demand projections. Available supply capacity will need to consider blended water nitrate concentration, available reservoir storage, and the anticipated equipment outage duration, to determine if the water demand can be met.

Chronic Water Shortages are declared by the City Council. Short-term Water Shortages can be declared by the City Manager if time is of the essence and City Council approval is not possible.

Severe Groundwater Shortages
The Stipulation includes provisions to avoid Severe Groundwater Shortages and a procedure to deal with such conditions. Given the historic reliability of Basin supplies, a Severe Groundwater Shortage will be found to exist only when the Management Area Engineer, based on ongoing monitoring, finds the following:

1. Groundwater levels in the Management Area are in a condition of chronic decline over a period greater than five years;

2. The groundwater decline has not been caused by drought;

3. There has been material increase in groundwater use during the five-year period; and

4. Monitoring wells indicate that groundwater levels in the Santa Maria Valley Management Area are below the lowest recorded levels.

The procedure for addressing Severe Groundwater Shortages is described in the Stipulation, which may include limitations on groundwater use.

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3.2 Data Inputs and Assessment Methodology
Water Demand
Water demand can be estimated as the average of the last three years of unconstrained demand, or in other words, the last three years of demand with no major water use restrictions. If more detailed information is available, then the projected current year demand can be calculated differently.

The Governor’s 20 by 2020 initiative included a per capita water use target for 2020 of 118 gallons per capita per day (gpcd). In 2020, gross water use was about 13,107 AF for a population of 107,353 resulting in a demand of 109 gpcd1. In 2025, City water demand was 11,158 AF for a population of 112,208 resulting in a demand of 89 gpcd. Future demands are calculated in the 2025 UWMP and include the use of 89 gpcd gross water demand as well as savings due to conservation required to meet future Urban Water Use Objectives established in SB 606 and AB 1668 (Making Conservation a California Way of Life legislation). Table 4 showsthe anticipated potable water demand through 2050.

This value includes retail demands and does not include water Santa Maria delivers to Nipomo Community Services District (NCSD) or Golden State Water Company (GSWC).

Table 4: City of Santa Maria Projected Population and Water Demand Year 2025 2030 2035 2040 2045 2050
Population 112,208 117,482 122,768 128,047 129,968 131,788 Potable Demand, AF 11,158 11,662 12,135 12,599 12,773 12,939 Potable Demand, gpcd 89 89 88 88 88 88
Other impacts to the City’s water portfolio include water rights leases for use in the Orcutt area, interagency potable water exchanges with GSWC, and water sales to the NCSD. Orcutt water rights leases do not negatively impact the City’s water supply. Except for the first 20 AF/YR, GSWC’s potable water exchanges involve an exchange of GSWC’s SWP allocation for the City’s potable water supply. NCSD water sales, however, involve potable water delivery and utilize the City’s water supply infrastructure. The agreement between NCSD and the City requiresthat the City deliver 1,000 AF/YR with an increase to 2,500 AF/YR until 2085. Using these numbers, Table 5 shows the water demand taking into account all of the obligations of the City for potable water supply.

Table 5: Total City of Santa Maria Demand
Year 2025 2030 2035 2040 2045 2050
City of Santa Maria Demand 11,158 11,662 12,135 12,599 12,773 12,939 NCSD Demand 1,511 2,500 2,500 2,850 3,200 3,200
GSWC Demand 20 20 20 20 20 20
Orcutt Water Leases 315 800 900 900 900 900
Total 12,689 14,182 14,655 15,469 15,993 16,159
1 The 109 gpcd figure is as reported in SB X7-7. However, the SB X7-7 calculations appear to calculate gross water demand with the inclusion of water transferred to others. This will overestimate the per capita demand of the City in 2020. Actual City per capita demand in 2020 was less than 109 gpcd.

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Supply and Demand Assessment
The City’s water supply portfolio is sufficient to meet projected demands through 2050, although restrictions may be needed in the case of a severe drought or catastrophic emergency.

A review of water use by customer class shows a consistent seasonal demand by industrial customers, a slight increase in summer months by multi-family customers, and a large seasonal difference between summer and winter months for both commercial and single-family customers. Meters dedicated to landscape irrigation also show higher water demand during warmer months. Landscape irrigation would be considered less critical than other water uses, including public health and safety, basic sanitation, and domestic supply, and would be a target for water conservation programs.

Quantification of Water Supply
Surface Water (via SWP): SWP supplies are provided by the CCWA and are generally limited to SWP allocations. However, opportunities for additional SWP purchases are available.

SWP Return Flows: The City has a right to Return Flows from SWP water, which are equal to 65 percent of the previous five-year rolling average of SWP imports.

Twitchell Reservoir: The City has a reliable yield of 14,360 AF/YR yield from recharge that occurs from Twitchell Reservoir granted under the Stipulation.

Groundwater: As a part of the Stipulation, the City, along with GSWC and City of Guadalupe, has preferential appropriative rights to surplus native groundwater. Therefore, these parties may pump groundwater without limitation unless a Severe Water Shortage Condition exists, as discussed above.

In the event of a Severe Water Shortage, the Court may order GSWC, along with the City of Santa Maria and the City of Guadalupe, to limit their pumping to their respective shares of groundwater derived from the Twitchell Yield, return flows, and any assigned rights. The Court granted the City 5,100 AF/YR of prescriptive rights in the Basin.

3.3 Infrastructure Capabilities and Constraints
Plausible constraints include operational problems or damage to wells, pipelines, or SWP facilities.

With the delivery of SWP water, the City has excess well capacity. If the SWP is not operational, the City is unable to meet its short-term summertime or peak demands solely with groundwater supplies.

The City is actively working to increase groundwater pumping capacity to access the City’s water rights and allow the well field to meet summer demands if State Water is unavailable.

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Chapter 4 – Water Shortage Stages
As outlined in the Water Code requirements (10632 a & b.), Water Shortage Contingency Plans must include or be adapted to the six standard water shortage levels, which correspond to the progressive ranges of <10%, 10-20%, 20-30%, 30-40%, 40-50% and >50%. These six levels are described in Table 6. The various Response Actions that correspond with these levels are addressed in Chapter 5 of this plan.

Table 6: Water Shortage Stages
Response Levels Description Conservation Target
Level 1 Water Shortage Less than 10%
Level 2 Moderate Water Shortage 10% - 20%
Level 3 Severe Water Shortage 20% - 30%
Level 4 Critical Water Shortage 30% - 40%
Level 5 Extreme Water Shortage 40% - 50%
Level 6 Emergency Water Shortage Greater than 50%
These water shortage stages each include specific water use restrictions that will be adopted and enforced. Detailed descriptions of each water shortage stage and their associated water use restrictions are provided in the following chapter.

This policy establishes water management requirements necessary to conserve water, enables effective water supply planning, assures reasonable and beneficial use of water, prevents waste of water, and prevents unreasonable use of water within the City. It establishes six levels of response actions to be implemented in times of shortage with increasing restrictions on water use in response to worsening drought conditions and decreasing available supplies.

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Chapter 5 – Shortage Response Actions

5.1 Response Actions by Water Shortage Stage
The City Council adopted §8-10.33 Water Waste: Outdoor Water Use Restrictions in the Santa Maria Municipal Code consistent with Water Code §10608.14 and §10632a.4 and describes outdoor water use restrictions and prohibitions to promote water conservation and prevent water waste.

The following Shortage Response Actions may also be implemented by the City Council as deemed necessary to address water shortages. If the State mandates other response actions during a drought, they will be added to the list below. The City Council has the flexibility to modify response actions for each stage during a water shortage, but the list below includes recommended guidelines for each stage. Each stage can be used during a long-term water shortage (drought) or during a short-term catastrophic interruption of water supply.

Stage 1 – Water Shortage (Reduce Water Use by 10%)
This stage represents a minor water shortage and will be handled with the following response actions:
• Increase public awareness, public media campaigns, and water conservation education. • Require that all use of water be for beneficial purposes only; all unnecessary and wasteful use of water is prohibited.
• Monitor users of construction water meters and fire hydrant meters for efficient water use.

Stage 2 – Moderate Water Shortage (Reduce Water Use by 20%) This stage represents a moderate water shortage and will include the response actions in previous stages plus the following:
• Evaluate metered water use for leak detection and potential non-compliance with conservation requirements.
• Increase monitoring through AMI and enforcement of water waste. • Limit outdoor watering/irrigation to two days per week: even numbered addresses on Sunday and Wednesday and odd numbered addresses on Tuesday and Saturday. • City Council may enact emergency/drought surcharges.

Stage 3 – Severe Water Shortage (Reduce Water Use by 30%) This stage represents a severe water shortage and will include the response actions in previous stages plus the following:
• Suspend City water main flushing unless required for water quality.

Stage 4 – Critical Water Shortage (Reduce Water Use by 40%) This stage represents a critical water shortage and will include the response actions in previous stages plus the following:
• Prohibit outdoor watering/irrigation.
• Place moratorium on new construction meters.
• City Council may consider a moratorium on any new water connection.

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Stage 5 – Extreme Water Shortage (Reduce Water Use by 50%) This stage represents an extreme water shortage and will include the response actions in previous stages plus the following:
• Discontinue use of existing construction meters.

Stage 6 – Emergency Water Shortage (Reduce Water Use by Over 50%) This stage represents an emergency water shortage and will include the response actions in previous stages plus the following:
• Prohibit use of potable water for street sweeping.

Demand Management Measures
The City also implements numerous Demand Management Measures that are described in the Urban Water Management Plan. These include programs such as distribution system leak detection, customer water audits, low flow device giveaways, etc. These programs are implemented year-round but could be expanded during a water shortage to help further reduce water use.

5.2 Catastrophic Supply Interruption
A catastrophic supply interruption would occur if the City were to lose one or both of the main water supplies. The likelihood of experiencing a loss of both supplies simultaneously is low. For instance, local power outages may limit use of groundwater but it does not affect imported water delivery.

If supply is insufficient to meet demand and water quality requirements, an emergency notification will be sent to all water customers, following the City’s Emergency Water Quality Notification procedures which include using the City’s mass notification telephone system. The message will include the expected duration and restrictions until the issue is resolved. For instance, a public safety power shutoff that disrupts power for two days may include a request to forego landscape irrigation until power is restored.

The City can supply State Water to its distribution system in the event of a local power outage. If State Water is not available, the City has sufficient generator power to operate six water wells, which is sufficient to meet essential water demands. The City will evaluate the amount of storage available, the production with available supplies, and the projected demand to determine length of time the existing demands can be met while the outage persists. The City can contact the largest water users to request they reduce water use during the outage. The City can also call all City water customers using its mass notification telephone system to request all non-essential water use be curtailed.

5.3 Seismic Risk Assessment and Mitigation Plan
Seismic risk and mitigation for Santa Maria is discussed in the City of Santa Maria Local Hazard Mitigation Plan [1], which is an Annex to the Santa Barbara County Multi-jurisdictional Hazard Mitigation Plan. According to the Local Hazard Mitigation Plan:

The City is in Seismic Zone 4, which is the highest potential status for an earthquake in California.

Many potential quake faults have been mapped in the Santa Maria Valley, as well as some areas that may be subject to liquefaction. However, there is a high likelihood that there are unidentified faults and unidentified areas of potential liquefaction in the area.

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The City lies within a moderate liquefaction potential zone. When liquefaction of the soil does occur, buildings and other objects on the ground surface may tilt or sink, and lightweight buried structures (such as pipelines) may float toward the ground surface. Liquefied soil may be unable to support its weight or that of structures, which could result in loss of foundation bearing or differential settlement.

Damage to water infrastructure, such as pipes, reservoirs, and wells, is possible from earthquakes. The Twitchell Dam has only a remote likelihood of catastrophic failure due to an earthquake, and it is used as a flood control and recharge tool rather than as a reservoir for water supply to the City.

An earthquake can cause structural or mechanical failure, or chemical release at a treatment facility due to containment failure or a rupture of a pipeline. Mechanical failures or pipeline rupture could lead to a drop in water system pressure and create the potential for localized flooding or contamination. The City has some seismic shut-off valves to help isolate problem areas during an earthquake. However, while isolating severed pipelines minimizes flooding risk, water supply is a critical element of earthquake response, both for maintaining positive pressure to control contamination and for fire control. To keep the water system operational after an earthquake, if possible, the Utilities Department will perform the general actions listed below following an earthquake.
• Distribution system integrity will be checked, starting with the largest transmission lines. • Water main breaks will be isolated to the smallest area as soon as possible. • Breaks on lines that feed larger areas will be prioritized. • Isolations will be mapped, along with known fires, to track how to best maintain operation.

To the greatest extent possible, water supply will be provided to customers in affected regions. Water can be pumped from one location and delivered to central areas for distribution by container if the distribution system has failed or is contaminated. Regular communication with the community on the status of its water supply will be necessary to ensure that essential water needs are met.

5.4 Locally Appropriate Supply Augmentation Actions
Surface Water
Several mechanisms exist for augmenting the State Water supply, including dry year water purchases from local purveyors in the Santa Barbara/San Luis Obispo area or from other State Water Contractors, and groundwater banking programs operated by CCWA project participants. The City maintains a dry-year water reserve fund for State Water purchases to be used when the State Water allocation is low.

Groundwater
The City relies on groundwater for a portion of its water supply. Should groundwater quality decline in a particularwell, the City will rehabilitate the well to reduce the contaminant(s), blend the contaminants with other water supplies to meet standards, or develop groundwater treatment facilities to continue to provide water from the well.

The local groundwater basin is adjudicated, and therefore, already managed. The City’s rights to rely on Basin water resources for both pumping and storage are governed by a judgement and settlement agreement (“Stipulation”) signed by a majority of the parties (Santa Maria Valley Water Conservation District vs. City of Santa Maria, et al., Case No. 770214, commonly known as the “Santa Maria City of Santa Maria Water Shortage Contingency Plan
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Groundwater Adjudication.”
The Santa Maria Groundwater Adjudication provides the City with quantifiable and certain water rights. The Stipulation also establishes a framework for both permanent and temporary transfers of water rights within the Basin. Because the City has obtained quantifiable water rights, the City has greater flexibility in facilitating transfers and exchanges. The Stipulation allows permanent or temporary transfer of the developed groundwater yield associated with the operation of the Twitchell Project. The Stipulation also allows temporary transfers of agricultural pumping rights (fallowing programs) during Severe Water Shortage Conditions.

5.5 Locally Appropriate Operational Changes
In times of significant water shortage, operational changes may be implemented to adapt the City’s system to account for added stress or to decrease overall demand.

The City has an interconnection with GSWC, which serves the Orcutt community south of the City.

In emergencies, the City can request water from GSWC to address a short-term water shortage or water quality issue.

5.6 Gap Between Supply and Demand
Each Water Shortage Stage has been established to directly reflect conceivable gaps between supply and demand during moderate, severe, and emergency drought conditions and supply shortages. If one stage is not successful in achieving water use reduction, then the next stage will be enacted. The City also maintains flexibility and authority to adjust these Stages and Response Actions if deemed necessary.

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Chapter 6 – Community Outreach
The City utilizes the following media outlets and platforms for general outreach and education and will also use these outlets to communicate current or predicted shortages:
• The City’s website (www.cityofsantamaria.org)
• Newspaper articles
• Customer mailers
• Social media
• News releases
• Direct customer contact
The City Council may choose to enhance or adapt these communication methods during a drought or shortage event if deemed necessary.

The City maintains a “Water Conservation” webpage which explains current programs and restrictions and from which the below graphic was obtained. (https://www.cityofsantamaria.org/services/ departments/utilities-department/water-conservation)
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Chapter 7 – Customer Compliance and Enforcement
The City can set water use violation fines, charges for removal of flow restrictors, as well as establishing mandatory conservation and rationing measures. The penalties consist of a written warning and a surcharge for the violation. A flow-restrictor or possible shutoff may be imposed after three violations.

Refer to the City website for more details on fines and penalties since they may change over time.

Section 8-1.07 of the Santa Maria Municipal Code states:
“In the event that any user or consumer is aggrieved by any ruling of the Director of Utilities made pursuant to any of the provisions of this chapter [Ch. 8 of the Santa Maria Municipal Code] and Chapters 8-9, 8-10, 8- 11 and 8-13, such consumer or user may appeal from such ruling to the City Manager within the time and in the manner set forth in Section 8-12.1406. The City Manager's action on such appeal shall likewise be made and become final pursuant to the provisions of Section 8-12.1406.” This space is intentionally blank.

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Chapter 8 – Legal Authority of the Plan
Water use prohibitions and enforcement mechanisms must be approved by City Council resolution.

This WSCP was adopted jointly with the 2025 UWMP. Water code requirements for public noticing and holding a public hearing were followed. Refer to the City’s 2025 UWMP for more details on the adoption process.

8.1 Declaring a Water Shortage Emergency
The City will follow the protocols outlined in this Plan should it become necessary to declare a water shortage emergency. The process will follow the pertinent sections of the California Water Code and be noticed for a public hearing, which will be initiated by the City Manager and Council. The City Council will typically declare a Water Emergency based on recommendations from staff. A shortterm Water Emergency can be declared by the City Manager if time is of the essence and City Council approval is not possible.

8.2 Coordination with other Cities and Counties
The City is required to coordinate and inform an appropriate wholesale supplier of projected water use in accordance with the Water Code. The City receives surface water from the CCWA and will communicate with them on any water use restrictions or changes in water demand. The City also provides water supplies to NCSD and GSWC and will keep them informed of any water shortages, water emergencies, or changes in water supplies.

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Chapter 9 – Revenue Reductions and Expense Increases

9.1 Potential Revenue Reductions and Expense Increases
Revenue reduction due to reduced water usage will cut into reserves during a water shortage and will be reflected in future rate setting discussions in order to re-establish acceptable fund reserve levels.

The City’s current rate structure anticipates future use based on continued conservation with consistent per capita water use. In addition, the Water Resources Fund budgets for dry year water purchases, including such expenses in the current water rate structure.

Since additional water supplies are either purchased or pumped and require only disinfection or fluoridation, there are little additional operations and maintenance costs to augment water supplies.

9.2 Mitigation Actions
The City’s rate structure includes a fixed component regardless of water use. This allows for steadier revenue during times of increased conservation. In addition, minimum fund reserves are maintained to address short-term operational needs in times of reduced revenue.

9.3 Cost Compliance
The City has its standard policies that address penalties for wasteful use or overuse of water during a Shortage Stage. Declaring a water shortage and enforcing response actions can be performed by existing staff with no significant increases in cost.

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Chapter 10 – Monitoring and Reporting Requirements
The City maintains compliance with State reporting requirements, including the use of meters. Fixed base meter reading facilitates monitoring water use. Hourly meter readings for each account are stored in a database. Reports can be produced and reviewed to observe trends and identify potential water waste. Electronic notification of accounts using the City’s mass notification telephone system allows for a cost-effective and labor efficient mechanism for informing the customer regarding water use.

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Chapter 11 – Monitoring and Evaluating the Plan
This WSCP is an update to a previous WSCP prepared by the City. This update satisfies new State requirements for WSCPs and reflects the refinements and improvements deemed necessary to adequately address the City’s needs. The WSCP will be re-evaluated at least every five years and at the end of each major drought period to assess its performance. If deemed necessary, it will be modified and improved at any time.

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Chapter 12 - References
City of Santa Maria Municipal Code.

Luhdorff and Scalmanini Consulting Engineers. April 2025. 2024 Annual Report of Hydrogeologic Conditions, Water Requirements, Supplies, and Disposition, Santa Maria Valley Management Area Santa Clara County Superior Court. Santa Maria Valley Water Conservation District vs. City of Santa Maria, et al., Case no. 770214. Commonly known as the “Santa Maria Groundwater Adjudication.” State of California Department of Water Resources. January 2026. Urban Water Management Plan Guidebook 2025.

State of California Department of Water Resources. August 2020. The Final State Water Project Delivery Capability Report 2019.

State of California Department of Water Resources. February 2010. 20x2020 Water Conservation Plan
State of California Department of Water Resources Office of Water Use Efficiency and Transfers. 2008. Urban Drought Guidebook, 2008 Updated Edition.

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CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix I – Ordinances, Resolutions, and Municipal Code Sections

APPENDICES
Ordinance No. 2014-07
An Ordinance of the City Council of the City of Santa Maria Amending Santa Maria Municipal Code Section 8-10.33 Regarding Water Waste and Conservation

APPENDICES
Resolution No. 2007-46
A Resolution of the City Council of the City of Santa Maria, California, Approving and Adopting the Urban Water Management Plan 2005 Update

APPENDICES
Resolution No. 2014-131
A Resolution of the City Council of the City of Santa Maria, California, Modifying and Implementing Stage 1 of the Water Shortage Contingency Plan

APPENDICES
Resolution No. 2015-46
A Resolution of the City Council of the City of Santa Maria, California, Modifying Stage 1 of the Water Shortage Contingency Plan

APPENDICES
Resolution No. 2022-70
A Resolution of the City Council of the City of Santa Maria, California, Enacting Stage 2 of the Water Shortage Contingency Plan
RESOLUTION NO. 2022- 70

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SANTA MARIA, CALIFORNIA, ENACTING STAGE 2 OF THE CITY -S

WATER SHORTAGE CONTINGENCY PLAN
WHEREAS, in 2014, the Santa Maria City Council adopted Ordinance No. 2014- 07 amending Municipal Code Section 8- 10. 33 to add specific water waste prohibitions and adopted Resolution No. 2014- 131 to enact Stage 1 of the Water Shortage Contingency Plan which required implementation of specific water conservation measures; and
WHEREAS, due to ongoing drought conditions since 2014, these conservation measures have remained in place; and
WHEREAS, with the increased severity of the drought, the State Water Resources Control Board (" Water Board") requires that urban water suppliers take further action to preserve critical water supplies and mitigate the effects of drought to ensure the protection of health, safety, and the environment; and
WHEREAS, on May 24, 2022, the Water Board adopted an emergency regulation for urban water conservation requiring urban water suppliers to implement the demand reduction actions identified in their Water Shortage Contingency Plans for a Stage 2 Water Shortage; and
WHEREAS, the City must implement Stage 2 of its Water Shortage Contingency Plan, which includes all water conservation measures required in a Stage 1 Water Shortage, and adds additional conservation measures and reporting requirements.

NOW, THEREFORE, IT IS HEREBY RESOLVED by the City Council of the City of Santa Maria, California, as follows:

1. Stage 2 of the City of Santa Maria Water Shortage Contingency Plan, incorporated by reference, is hereby enacted and shall remain in place until such time as rescinded or amended by the City Council; and

2. The Chief Deputy City Clerk is hereby authorized to make minor changes herein to address clerical errors, so long as substantial conformance of the intent of this document is maintained. In doing so, the Chief Deputy City Clerk shall consult with the City Manager and City Attorney concerning any changes deemed necessary. 111
PASSED AND ADOPTED at a
regular meeting of the City Council of the City of
Santa Maria held on this 21st day of June 2022.

ATTEST:

Chief Deputy City Clerk
City Attorney
f
Ci y Manager
I

STATE OF CALIFORNIA
COUNTY OF SANTA BARBARA ) ss.

CITY OF SANTA MARIA
I, M. Beth Cleary. Deputy City Clerk of the City of Santa Maria and ex officio Clerk of the City Council DO HEREBY CERTIFY that the foregoing is a full, true and correct copy of Resolution No. 2022- 70 which was duly and regularly introduced and adopted by said City Council at a
regular meeting held June 21, 2022, and
carried on the following vote:

AYES: Councilmembers Cordero, Escobedo, Soto,
Waterfield, and Mayor Patino.

NOES: None.

ABSENT: None.

ABSTAIN: None.

Deputy City Clerk
City of Santa Maria

APPENDICES
City of Santa Maria Municipal Code Sections
8-10.32 Waste: Leaking facilities
8-10.33 Water Waste: Outdoor Water Use Restrictions
9-32.110 Section 423 Added: Car Washes

CITY OF SANTA MARIA

MUNICIPAL CODE
SECTIONS 8-10.32-.33 AND 9-32.110
Section 8-10.32. Waste: Leaking facilities.
(a) Each and every consumer shall maintain in good repair all his water pipes, faucets, valves, plumbing fixtures or any other appliances, at all times to prevent waste of water. (b) Where any consumer willfully neglects to make such necessary repairs, the water shall be shut off and sealed by the Utilities Department and shall not be turned on again until repairs have been made to the satisfaction of the Department, and a turn-on fee as provided in the Schedule of Fees and Charges within this Code is paid by the consumer to the City. (Prior Code § 20-47; Ord. 2005- 01, eff. 3/3/05)
Section 8-10.33. Water Waste: Outdoor Water Use Restrictions. (a) To promote water conservation and prevent water waste, each of the following actions is prohibited, except where necessary to address an immediate health and safety need or to comply with a term or condition in a permit issued by a state or federal agency:
(i) The application of potable water to outdoor landscapes in a manner that causes runoff such that water flows onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures.
(ii) The use of a hose that dispenses potable water to wash a motor vehicle, except where the hose is fitted with a shut-off nozzle or device attached to it that causes it to cease dispensing water immediately when not in use.
(iii) The application of potable water to driveways and sidewalks. (iv) The use of potable water in a fountain or other decorative water feature, except where the water is part of a recirculating system.
(b) Where any consumer willfully and negligently wastes water through the misuse of sprinklers or any other outdoor watering facilities, the water may be shut off and sealed by the Utilities Department, and shall not be turned on again until a turn-on fee as provided in the Schedule of Fees and Charges within this Code is paid by the consumer. (Prior Code § 20-48; Ord. 2005-01, eff. 3/3/05; Ord. 2014-07, eff. 10/2/2014)
Section 9-32.110. Section 423 Added: Car Washes.

Chapter 4 to the California Plumbing Code, 2019 Edition, is amended to add new Section 423.0 to read as follows:
423.0 Car Washes. All commercial car wash facilities, including self-wash, shall have water recycling systems and the design installations of these systems shall be comply with Section 10950 through 10953 of California Health and Safety Code and be approved by the administrative authority.
(Ord. 2019-10, eff. 1/1/20)

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix J – Supporting Documentation: Adoption,
Submittal, Implementation

CITY OF SANTA MARIA

URBAN WATER MANAGEMENT PLAN
Appendix K – UWMP Checklist
2025 Urban Water Management Plan Appendix K - UWMP Checklist Retail
2025
Guidebook
Location
Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x 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 n/a Chapters 6 and 9
x Chapter 1 10630.5
Each plan shall include a simple description of theSupplier’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.

Plan preparation n/a Lay Description, Section 1.2
x Section 2.1 10620(b)
Every person that becomes a Supplier shall adopt UWMP within one year after it has become a Supplier.

Plan preparation n/a n/a
x Section 2.5 10644
Supplier shall report the Public Water Systems number, volume of delivered water, and number of connections that are included in this UWMP.

Plan preparation 2-1 Section 2.1
x Section 2.5 10644
Supplier shall report if this UWMP is an individualUWMP and whether the Supplier belongs to a regional UWMP or regional alliance.

Plan preparation 2-2 Section 2.1
x Section 2.5 10644
Supplier shall report whether the data is in fiscal or calendar years and the units of measure used for reporting water volumes.

Plan preparation 2-3 Section 2.1
x Section 2.4 10642
Provide supporting documentation that the 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 n/a Sections 9.4, 9.6, & 9.7 and Chapter 10 x Section 2.4.2 10620(d)(3)
Coordinate the preparation of its plan with other appropriate agencies in the area, including other Suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable.

Plan preparation n/a Chapter 10
City of Santa Maria Utilities Department K - 1
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x Section 2.4.1 10631(h)
Retail Suppliers will include documentation that they have provided their Wholesale Supplier(s)—if any—with water use projections from that source.

Plan preparation 2-4 R Sections 2.2 and 6.2
n/a Section 2.4.1 10631(h)
Wholesale Suppliers will provide their Suppliers with identification and quantification of the existing and planned sources of water available from the
Wholesale Supplier to the Supplier during various water year types.

Plan preparation 2-4 W Section 6.2
x Chapter 3.0 10631(a) Describe the Supplier service area. System description n/a Chapter 3x Section 3.3 10631(a) Describe the climate of the Supplier’s service area. System description n/a Section 3.5 x Section 3.4.1 10631(a)
Provide the current and projected service area populations for 2030, 2035, 2040, 2045 and optionally 2050.

System description 3-1 Section 3.4
x Section 3.4.2 10631(a)
Describe other social, economic, and demographic factors affecting the Supplier’s water management planning.

System description n/a Sections 3.2, 3.4, 4.2, & 4.3
x Section 3.5 10631(a)
Describe the land uses within the service area… include the current and projected land uses within the existing or anticipated service area affecting the Supplier’s water management planning. Describe the land uses within the service area.

System description and baselines n/a Section 3.2
x
Sections 4.2.3 and 4.2.4 10631(d)(1) Quantify past, current, and projected water use, identifying the uses among water use sectors. System water use 4-1 and 4-2 Section 4.2 x Section 4.3.1 10631(d)(3)(A) Report the distribution system water loss for each of the five years preceding the plan update. System water use 4-5 Section 4.5 x Section 4.3.2 10631(d)(3)(C) Retail Suppliers shall provide data to show the distribution loss standards were met. System water use 4-6 Section 4.5 x Section 4.2.5.4 10631.1(a)
Include projected water use needed for lower income housing projected in the service area of theSupplier.

System water use 4-3 Section 4.3
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x Section 4.2.5.3 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 4-3 Section 4.2
x Section 4.2.5.3 10631(d)(4)(B) Provide citations of codes, standards, ordinances, or plans used to make water use projections. System water use 4-3 Sections 4.2 and 4.6 x Section 4.2.5.3 10631(d)(4)(B)(ii)
To the extent that a Supplier reports the
information described in subparagraph (A), an
urban water Supplier shall… Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation andland use plans. Water use projections that do not account for these water savings shall be noted of that fact.

System water use 4-3 Sections 4.2 and 4.6
x Section 4.2.5.6 10635(b) Demands under climate change considerations must be included as part of the drought risk assessment. System water use n/a Section 4.7 n/a Section 5.1 10608.36
Wholesale Suppliers shall include an assessment of
present and proposed future measures, programs, and policies to help their Retail Suppliers achievetargeted water use reductions.

Baselines and targets n/a n/a
x Section 5.2 10608.4
Retail Suppliers shall report on their compliance in meeting their water use targets. Reporting requirements will vary depending on whether the Supplier:- Was considered an urban retail water supplier in 2020,- Met its 2020 target in 2020, or- Was part of a merger or consolidation since 2020.Chapter 5 Subsections 5.2.1, 5.2.2, and 5.2.3 address each of these situations.

Baselines and targets 5-1 Chapter 5
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x 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 n/a Chapter 6
x
Sections 6.1 and 6.2 10631(b)(1)
Provide a discussion of anticipated supply availability under a normal, single dry year, and adrought lasting five years, as well as more frequent and severe periods of drought, including changes insupply due to climate change.

System supplies n/a Chapter 7
x Section 6.2.2 10631(b)(4)(C)
Indicate whether groundwater is an existing or planned source of water available to the Supplier. If groundwater is identified as an existing or plannedsource of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.

Water supplies and recycled water
6-1 Sections 6.1 and 6.4
x Section 6.2.2 10631(b)(4)(A)
Indicate whether a groundwater sustainability plan or groundwater management plan has been adopted by the Supplier or if there is any other specific authorization for groundwater management. Include a copy of the plan or authorization.

System supplies n/a Section 6.4.2
x Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. System supplies n/a Section 6.4x 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 hasthe legal right to pump.

System supplies n/a Section 6.4.2
x Section 6.2.2 10631(b)(4)(B)
For unadjudicated basins… (include) information as to whether DWR has identified the basin as a highor medium-priority basin in the most current official departmental bulletin…
Water supplies and recycled water n/a n/a
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x Section 6.2.2 10631(b)(4)(B)
For unadjudicated basins… describe efforts by the Supplier to coordinate with sustainability or groundwater agencies to achieve sustainable groundwater conditions.

Water supplies and recycled water n/a n/a
x Section 6.2.2. 10631(b)(4)(C)
If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.

System supplies n/a Section 6.4.3
x 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 6-9 Section 6.4 and 6.12
x Section 6.1 10631(b)
Identify and quantify the existing and planned sources of water available for 2025, 2030, 2035, 2040, 2045 and optionally 2050.

System supplies 6-8 and 6-9 Sections 6.1 and 6.12
x 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 n/a Section 6.5
x 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 disposalmethods.

System supplies (recycled
water) 6-2 Section 6.7
x 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) 6-3 Section 6.7
x Section 6.2.5 10633(c) Describe the recycled water currently being used in the Supplier's service area. System supplies (recycled water) 6-4 n/a x 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) 6-4 Section 6.7
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x 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 describe the actual use of recycled water in comparison to uses previously projected.

System supplies (recycled
water) 6-4 and 6-5 Section 6.7
x Section 6.2.5 10633(f)
Describe the actions that may be taken to encouragethe use of recycled water and the projected resultsof these actions in terms of acre-feet of recycled water used per year.

System supplies (recycled
water) 6-6 Section 6.7.2
x 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) n/a Section 6.7.2 x Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply. System supplies 6-7 Section 6.6 x Section 6.2.10 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 five consecutive water years.

System supplies 6-7 Section 6.9
x
Section 6.3 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 O-1A, O-1B, O-1C, and O-2 Section 6.11 x Section 7.1 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 n/a Section 7.6
x Section 7.2 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 Supplier with the total projected water use over the next 20 years.

Water supply reliability
assessment
7-2, 7-3, and 7-4 Chapter 7
x Section 7.2.3 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 n/a Section 7.6
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x 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 n/a Section 7.5
x 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 five consecutive years.

Water supply reliability
assessment n/a Section 7.5
x 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 n/a Sections 7.1 to 7.4
x Section 7.3 10635(b)(3)
Include a comparison of the total water supply sources available to the Supplier with the total projected water use for the drought period.

Water supply reliability
assessment
7-5 Sections 7.3 and 7.4
x 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 n/a Section 7.7
x Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below. Water shortage contingency planning n/a Chapter 8 and Appendix H x Chapter 8 10632(a)(1) Provide an analysis of water supply reliability (from Guidebook Chapter 7) in the WSCP. Water shortage contingency planning n/a Appendix H x 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 n/a Appendix H
x 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 n/a Appendix H
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x Section 8.3 10632(a)(3)(A)
Define six standard water shortage levels of 10%, 20%, 30%, 40%, 50% shortage, and greater than 50% shortage. These levels shall be based on supplyconditions, including percent reductions in supply,changes in groundwater levels, changes in surface elevation, or other conditions. The shortage levelsshall also apply to a catastrophic interruption of supply.

Water shortage contingency
planning n/a Appendix H
x Section 8.3 10632(a)(3)(B)
Suppliers with an existing WSCP that uses different
water shortage levels must cross reference their
categories with the six standard categories.

Water shortage contingency
planning 8-1 Appendix B and H
x Section 8.4 10632(a)(4)(A)
Suppliers with WSCPs that align with the defined shortage levels must specify locally appropriate supply augmentation actions.

Water shortage contingency
planning 8-2 Appendix B and H
x Section 8.4 10632(a)(4)(B) Specify locally appropriate demand reduction actions to adequately respond to shortages. Water shortage contingency planning 8-3 Appendix B and H x Section 8.4 10632(a)(4)(C) Specify locally appropriate operational changes. Water shortage contingency planning 8-2 Appendix B and H x 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 Table 8-3 Appendix B and H
x 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 8-2 and 8-3 Appendix B and H
x Section 8.4.6 10632.5 The UWMP shall include a seismic risk assessment and mitigation plan. Water shortage contingency plan n/a Chapter 8 and Appendix H x 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 n/a Appendix H
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x Section 8.5 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 n/a Appendix H
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 n/a Appendix H
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 n/a Appendix H x Section 8.7 10632(a)(7)(B)
Provide a statement that the Supplier will declare a
water shortage emergency per Water Code
Chapter 3. Water Shortage Emergencies .

Water shortage contingency
planning n/a Appendix H
x 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 n/a Appendix H
x 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 n/a Appendix H
x Section 8.8 10632(a)(8)(B)
Provide a description of mitigation actions needed
to address revenue reductions and expense increasesassociated with activated shortage response actions.

Water shortage contingency
planning n/a Appendix H
x 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 n/a Appendix H
x Section 8.9 10632(a)(9)
Retail Suppliers must describe the monitoring and reporting requirements and procedures that ensure appropriate data are collected, tracked, and analyzed for purposes of monitoring customer compliance.

Water shortage contingency
planning n/a Appendix H
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x Section 8.10 10632(a)(10)
Describe reevaluation and improvement procedures for monitoring and evaluation the WSCP to ensure risk tolerance is adequate and appropriate water shortage mitigation strategies are implemented.

Water shortage contingency
planning n/a Appendix H
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 n/a Appendix H
x Section 8.12 10632(c)
Make available the WSCP to customers and any city or county where it provides water within 30 days after adoption of the plan.

Water shortage contingency
planning n/a Chapter 10 and Appendix H
x Sections 9.1 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 n/a Chapter 9
n/a Sections 9.2 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
n/a n/a
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 n/a Chapter 10 x 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 Supplier will be reviewing the UWMP and considering amendments or changes to the plan.

Plan adoption, submittal, and implementation 10-1 Chapter 10 x Section 10.4 10621(f) Each urban water Supplier shall update and submit its 2025 plan to DWR by July 1, 202 6. Plan adoption, submittal, and implementation n/a Chapter 10 City of Santa Maria Utilities Department K - 10
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x
Sections 10.2.2, 10.3, and 10.5 10642
Provide supporting documentation that the Supplier made the UWMP and WSCP available for public inspection, published notice of the public hearing,and held a public hearing about the UWMP and WSCP.

Plan adoption, submittal, and implementation n/a Appendix J x Section 10.2.2 10642
The 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 10-1 Chapter 10 and Appendix J x Section 10.3.2 10642
Provide supporting documentation that the UWMP and WSCP has been adopted as prepared or modified.

Plan adoption, submittal, and implementation n/a Chapter 10 and Appendix J x Section 10.4 10644(a)
Provide supporting documentation that the Supplier has submitted their UWMP to the California State Library.

Plan adoption, submittal, and implementation n/a Chapter 10 and Appendix J x Section 10.4 10644(a)(1)
Provide supporting documentation that the Supplier has submitted their UWMP to any city or county within which the Supplier provides water no later
than 30 days after adoption.

Plan adoption, submittal, and implementation n/a Chapter 10 and Appendix J x
Sections 10.4.1 and 10.4.2 10644(a)(2) The UWMP, or amendments to the UWMP, submitted to DWR shall be submitted electronically. Plan adoption, submittal, and implementation n/a Chapter 10 and Appendix J x Section 10.7.2 10644(b) If revised, submit a copy of the WSCP to DWR within 30 days of adoption. Plan adoption, submittal, and implementation n/a noted x Section 10.5 10645(a)
Provide supporting documentation that, not later than 30 days after filing a copy of its UWMP with DWR, the Supplier has or will make the plan available for public review during normal business hours.

Plan adoption, submittal, and implementation n/a Chapter 10 x Section 10.5 10645(b)
Provide supporting documentation that, not later than 30 days after filing a copy of its WSCP with DWR, the Supplier has or will make the plan available for public review during normal business hours.

Plan adoption, submittal, and implementation n/a Chapter 10 City of Santa Maria Utilities Department K - 11
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x 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 n/a n/a
City of Santa Maria Utilities Department K - 12

Santa Maria City CouncilOctober 8, 2026

Santa Maria City Council
October 8, 2026