Wednesday, March 27, 2024
City of Rialto
Council Chambers
150 S. Palm Ave.
Rialto, CA 92376
Rialto City Hall, Council Chambers, 150 S. Palm Ave. Rialto CA 92376 Water Subcommittee
Regular Meeting - Final
REGULAR MEETING - 10:00 A.M.
1 March 27, 2024Water Subcommittee Regular Meeting - Final
CALL TO ORDER
ROLL CALL
PUBLIC COMMENTS
REVIEW/APPROVAL OF MINUTES
WS-24-1243 Minutes from the February 28, 2024 Meeting
Meeting Minutes 2-28-24.pdfAttachments:
PRESENTATIONS
WS-24-1248 Presentation of the City of Rialto Drought Contingency Plan. (FILE AND RECEIVE)
ATTACHMENT 1_Rialto Drought Contingency Plan Presentation ATTACHMENT 2_Draft Drought Contingency Plan Document
Attachments:
REPORTS/DISCUSSION ITEMS
WS-24-1258 Water and Wastewater Rate Study.
RECOMMENDATION
Request that the Water Subcommittee provide feedback on Water and Wastewater Rate Model. (ACTION)
Amendment 1 Water and Wastewater Rate Study 03072024.pdfAttachments:
WS-24-1246 Southern California Association of Governments (SCAG) Regional Early Action Planning (REAP) 2.0.
(ACTION)
RECOMMENDATION
Request that the Water Subcommittee provide feedback to the City Council sending a letter of advocacy for state budget reconsideration of REAP 2.0 program funding.
Attachment 1_Funding Notice
Attachment 2_KA-LTR-Rialto 1-RUSH Pause Notice
Attachment 3_SCAG Letter Response Regarding the State Budget Attachment 4_Draft Rialto Letter
Attachments:
2 March 27, 2024Water Subcommittee Regular Meeting - Final WS-24-1237 Extraterritorial Wastewater Service Agreement.
RECOMMENDATION
Request that the Water Subcommittee provide feedback on a proposed Extraterritorial Wastewater Service Agreement with Avila Collection, LLC for the property located at 10719 Linden Avenue and 10598 Orchard Street, Bloomington, CA, Assessor ’s Parcel Number 0257-021-28 and 0257-031-35.
ATTACHMENT 1_Site Plan
ATTACHMENT 2_Sewer Plan
ATTACHMENT 3_Site Map.pdf
Attachments:
WS-24-1245 Professional Service Agreement Amendment No. 3 with Soto Resources.
RECOMMENDATION
Request that the Water Subcommittee provide feedback on Professional Service Agreement Amendment No. 3 with Soto Resources in the amount of $ 100,000 to provide additional as -needed grant writing assistance . (ACTION)
Attachment 1_RUA Grant Program Update PresentationAttachments:
WS-24-1251 Consider the street segments for the Various Streets Phase II Project.
RECOMMENDATION
Staff requests that the Water Subcommittee provide feedback on the street segments for Various Streets Phase II, City Project No. 240802.
Attachment: Various Streets Paving Phase II & Utilities 5-Year CIPAttachments:
WS-24-1256 Utilities Manager Update.
(ACTION)
Rialto Water Services (RWS)/Veolia’s Monthly Operating Report (MOR): March 2024 (Reporting period January 2024).pdfAttachments:
UPCOMING MEETINGS/OTHER DISCUSSION ITEMS
ADJOURNMENT
3 City of Rialto
Legislation Text
File #: WS-24-1243, Version: 1, Agenda #:
For Water Subcommittee Meeting [ March 27, 2024]
TO: Water Subcommittee Members
FROM: Stephen Dopudja, P.E., Interim Utilities Manager
Nicole Hemmans, Senior Administrative Analyst
Minutes from the February 28, 2024 Meeting
City of Rialto Printed on 3/20/2024Page 1 of 1
powered by Legistar™
4 1
CITY OF RIALTO
REGULAR MEETING OF THE WATER SUBCOMMITTEE
February 28, 2024 - 10:00 A.M.
MINUTES
The Regular meeting of the Water Subcommittee of the City of Rialto was held in the Civic Center Council Chambers located at 150 S. Palm Avenue, Rialto, California 92376, on Wednesday, February 28, 2024.
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CALL TO ORDER Call to order at 10:10 A.M.
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ROLL CALL The roll call was taken by Senior Administrative Analyst, Nicole Hemmans.
Subcommittee Members / City Staff:
Mayor Deborah Robertson
Councilmember Ed Scott
David Carmany, City Manager
Arron Brown, Assistant City Manager
Robert Messinger, Deputy City Attorney
Stephen Dopudja, P.E., Interim Utilities Manager
Toyasha Sebbag, Assistant to the City Manager
(arrived after roll call)
Nicole Hemmans, Senior Administrative Analyst
Additional Attendees:
Peter Luchetti, Rialto Water Services (RWS)/Table Rock
Meagan Matson, Rialto Water Services (RWS)/Table Rock ( left meeting)
Dr. June Hayes, Resident
Soheil Sadighi, RWS/Veolia (left meeting)
Marlon Brosco, RWS/Veolia (left meeting)
Chandrasekar (CV) Venkatraman, RWS/Veolia (left meeting)
Presenters:
Gregg Brandon, Owner , Triad Consulting & System Design Group David Skusek, Triad Consulting & System Design Group
Jeff Hutchinson, Triad Consulting & System Design Group
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PUBLIC COMMENTS Public comment received on February 28, 2024:
♦ None
5 2
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APPROVAL OF MINUTES-
Regular Meeting of January 24,2023
NEW BUSINESS ITEMS
WS-24-1180 – Presentation by
Triad Consulting & System Design
Group on the water and
wastewater facilities upgrade
project. (RECEIVE AND FILE)
Minutes Prepared By: Nicole Hemmans, Senior Administrative Analyst Meeting Date: January 24, 2024 - Minutes Approved.
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Presentation on the water and wastewater facilities upgrade project presented by
Gregg Brandon, David Skusek, and Jeff Hutchinson with Triad Consulting & System Design Group.
(RECEIVE AND FILE)
Questions & Comments
♦ Dr. Hayes ask if the chain link fence surrounding the facilities will be the high-tech chain link fence that is harder to break into? o Per Mr. Brandon, yes, the chain link fence included in the security project will be the more secure chain link fence. ♦ Mr. Dopudja advised that the estimated cost of the security project providing a full spectrum of security would be $5 million. However, he also notes that there are opportunities to reduce the cost if there isn’t funding to support the full project.
♦ Councilmember Scott asked how will the security project be funded? o Per Mr. Brown, the project will rece ive funding of $3 million from the general fund and have also inquired with grant consultants, Soto Resources, regarding funding opportunities for this project. ♦ Councilmember Scott inquired if it was possible to increase funding from the general fund to ensure the security projects full completion, expressing desire to avoid it being halfway done.
♦ Mayor Robertson inquired whether staff has identified the security deficiencies at the facilities and quantified the time and cost that has incurred in address ing the issues since the inception of the concession agreement, owing to inadequate security measures? o Mr. Dopudja advised that the loss due to inadequate security has not been quantified.
Councilmember Scott suggested that staff collaborate with Police, Fire, 6 3
and Public Works departments to
gather the data Mayor Robertson is in
NE
♦ Councilmember Scott suggested that staff collaborate with Police, Fire, and Facilities and Maintenance departments to gather the data Mayor Robertson is inquiring about before presenting this item to the city council.
♦ Councilmember Scott asked if the Anaergia site at the wastewater facility treatment plant have perimeter security?
o Mr. Dopudja advised that the Anaergia site has its own perimeter fencing and that the proposed Rialto security upgrade would provide video security coverage around the perimeter of the wastewater treatment plant (WWTP) site, which includes
between the WWTP and Anaergia..
♦ Councilmember Scott asked Mr. Luchetti if there is a cost savings on insurance for increasing security at the facilities and requested for Mr. Luchetti to provide an amount.
o Per Mr. Luchetti, there is a savings on insurance for upgrading the security. The insurance company also provides a risk assessment/audit report on the facilities . Mr. Luchetti will provide what the cost savings is at a later time.
♦ Councilmember Scott asked if security signage will be added to the facilities? Mayor Robertson added that currently there isn’t any. o Mr. Brandon advised that signage around the facilities would be installed and confirmed that currently there isn’t any security signage.
♦ Dr. Hayes inquired if the security cameras are safeguarded against damage from being shot?
o Mr. Brandon advised that while the camera functions might be vulnerable to damage from gunfire, the overall security system is designed to capture such incidents, which would trigger further security measures and notifications.
♦ Councilmember Scott asked where are the cameras going to be monitored?
o Mr. Dopudja advised that Veolia will be monitoring from an operation standpoint, but the Police department may want to have a connection directly into their department when
notifications are detected.
♦ Councilmember Scott requested staff c onfirm that the new police station is technologically equipped to support the new
enhancements to the security system at the facilities.
o Mr. Dopudja advised that the security project plans were shared with Chief Kling and Chief Parks for comment.
7 4
♦ The Water Subcommittee propose this item be presented to City Council for further consideration.
WS-24-1181 – Provide Feedback
on Contract with 120Water for
services with Lead and Copper
Rule Revision (LCRR). (ACTION)
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Request that the Water Subcommittee provide feedback on the City Council and Rialto Utility Authority Board entering into a not -to-exceed contract in the amount of $164,650 for 120Water to provide services in compliance with Federal Environmental Protection Agency’s Lead and Copper Rule Revisions (LCRR).
(ACTION)
Questions & Comments
♦ Councilmember requested staff provide the cost for residents to test their water from inside their homes and recommend a program where the city help to supplement the cost of lead water sampling kits. ♦ Mr. Brown suggested staff can order the in-h ome sample tests for approximately $30/per test and make them available for residents to pick up from City Hall or Farmers Market.
♦ Councilmember Scott suggested providing the tests to the Realtors for distribution to the residents, however, Mayor Robertson would prefer for the distribution to be documented. T herefore, picking up a sample from the city would be best , such as Farmers Market, Earth Day, and city events where the distribution can be recorded.
♦ Dr. Hayes suggested including literature educating t he residents on LCRR and sample testing.
♦ Mr. Dopudja advised the Water Subcommittee that the inventory deadline is October 16, 2024, in order to meet compliance. ♦ Mayor Robertson and Councilmember Scott propose this item move forward for city council for further consideration.
WS-24-1182 – Provide feedback
on staff and elected appointments
for negotiations regarding Cactus
Basin. (ACTION)
Request that the Water Subcommittee provide feedback on staff and elected appointments for negotiations with the San Bernardino County Board of Supervisors regarding recharge and operating agreement to the Cactus Basins.
(ACTION)
8 5
Questions & Comments
♦ Mayor Robertson requests information on which elected officials are presented at negotiations with the San Bernardino County Board of Supervisors. She suggested there should be two elected officials sitting in the workgroup. Staff will confirm.
♦ Councilmember Scott inquired if there will be only one meeting? o Mr. Dopudja advised there will be a series of meetings. ♦ Water Subcommittee propose the following representatives for negotiations with the San Bernardino County Board of Supervisors regarding recharge and operating agreement to the Cactus Basins:
Mayor Robertson, Councilmember Scott, Stephen Dopudja, and Toyasha Sebbag.
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WS-24-1183 – Request feedback
on the city paving moratorium’s
impact on septic-to-sewer
conversions and water meter
lateral repairs.
(ACTION)
Request that the Water Subcommittee provide feedback on the city’s paving moratorium’s impact on septic-to-sewer conversions and water meter lateral repairs. (ACTION)
Questions & Comments
♦ Councilmember Scott explained that the 5- year pavement moratorium was put in place due to utility projects digging into the streets right after completion of the streets being paved. To prevent this , a 5- year moratorium was put in place on street paving . However, the moratorium was put in place for everyone. T herefore, if a resident has a sewer line break, they can’t dig into the street due to the moratorium. Same for new projects and residents wishing to convert from septic to sewer.
♦ Mr. Dopudja explained this item seeks a modification to the paving moratorium.
♦ Water Subcommittee advised for staff, in collaboration with the legal & maintenance and facilities departments, to return with
recommendations on modifying the pavement moratorium municipal code that accommodates residents’ requests to connect to the c ity sewer.
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9 6
WS-24-1184 – Request feedback
on the Growing Water Smart
Technical Assistance Grant funds.
(ACTION)
Request that the Water Subcommittee provide feedback on the Growing water Smart Technical Assistance Grant funds of $10,000.
Questions & Comments
♦ Councilmember Scott asked if the modification to the city’s landscape ordinance being proposed pertains to public landscape or residential landscape ordinance?
o Ms. Sebbag advised that it pertains to both public and residential landscape.
♦ Councilmember Scott commented that his issue with the proposal is that it requires residents to keep up with requirements that they can not afford to do, such as the drought tolerant landscaping.
♦ Mr. Dopudja advised that the intent of the $10,000 funding would be used towards implementing a guideline to the Model Water Efficiency Landscape Ordinance (MWELO) that looks reasonable to what the city visualizes and for residents to utilize.
♦ Mr. Luchetti commented that the Drought Contingency Plan (DCP) is a great plan that was really well done and can be utilized as a guideline, as well.
♦ Staff recommendation is to utilize the interns to oversee the project and hire a landscape architect to put together landscape median plant pallets that are aligned with the city council’s vision of how landscape medians should be designed in the city. On e example would be to redesign the Baseline median project.
♦ Mayor Robertson and Councilmember Scott expressed they support staff’s recommendation.
WS-24-1185 – Utilities Manager
update (ACTION).
Utilities Manager update provided by Stephen Dopudja.
Questions & Comments
♦ Mayor Robertson wants to know when will the paving projects for the city start?
o Per Mr. Dopudja, coordination meetings between Utilities, Maintenance & Facilities, Engineering, and Community
Development pertaining to paving projects in the city are just st arting to occur . The purpose of the coordination meetings are to identify projects that are overlapping and start a process that will provide a schedule to council showing how projects are correlating.
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10 7
UPCOMING MEETINGS/OTHER
DISCUSSION ITEM
ADJOURNMENT
♦ None
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♦ Meeting adjourned at 11:55 a.m.
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11 City of Rialto
Legislation Text
File #: WS-24-1248, Version: 1, Agenda #:
FOR: Water Subcommittee Meeting [March 27, 2024]
TO: Honorable Water Subcommittee Members
APPROVAL: Stephen Dopudja, P.E., Interim Utilities Manager Toyasha Sebbag, Assistant to the City Manager
Presentation of the City of Rialto Drought Contingency Plan. (FILE AND RECEIVE)
BACKGROUND
Presentation: Presentation of the City of Rialto Drought Contingency Plan presented by Laine Carlson Water Consulting Services (WCS).
City of Rialto Printed on 3/20/2024Page 1 of 1
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12 March 27, 2024
Water Subcommittee
Rialto Draft Drought Contingency Plan
13 DCP Background & Purpose
Draft DCP Overview
DCP Next Steps
Agenda
14 WaterSMART Drought Response Program
• USBR provides financial assistance for activities that help prepare for and respond to drought.
• Program funding is allocated for:
• Drought Contingency Planning
• Drought Resiliency Projects
• Increase reliability of supplies
• Improve water management
• Provide benefits for fish, wildlife and the environment • Emergency Response Actions
USBR Program Overview
3 The City of Rialto
received a grant to
prepare a Drought
Contingency Plan
15 Drought Contingency Planning
• Drought Contingency Plans are structured to address these questions:
• How will we recognize the next drought in the early stages? • How will drought affect us?
• How can we protect ourselves from the next drought?
USBR Program Overview
416
Drought Contingency Planning
USBR Program Overview
5 1. Introduction
• Purpose, Goals
• Approach
• Historical
Drought
• Agency
Overview
• Supply &
Demand
2. Drought
Monitoring
• Drought Indices
• Shortage
Stages
3. Response
Actions
• Related to
Shortage
Stages
4. Vulnerability
Assessment
• Risks and
Impacts of
Drought on
critical
resources
• Future
Conditions
• Drive mitigation
actions
5. Mitigation
Actions
• Tool to
prioritize
actions
• List of Actions
• Roles
• Responsibilities
• Resources
6. Operational
and
Administrative
Framework
7. Plan Update
Process
• Plan Evaluation
• Future Updates
17 Drought Task Force
• Composed of multiple agencies in the region to provide input on each element of the DCP
• City of Rialto Staff
• Rialto Water Services/Veolia
• San Bernardino Valley Municipal Water District
• West Valley Water District
• Fontana Water Company
• City of Colton
Rialto DCP
618
Drought Task Force
• DCP process included 7 Workshops
Rialto DCP
7 DROUGHT
MONITORING
& RESPONSE
VULNERABILITY
ASSESSMENT
MITIGATION
ACTIONS
DRAFT DCP
REVIEW
TASK FORCE
KICKOFF
DROUGHT
RESPONSE 2
EDUCATION &
ENGAGEMENT
19 Draft DCP Overview
Rialto Drought Contingency Plan
820
Plan
Area
21 Water Supply Portfolios in the Plan Area
10 22
Drought Monitoring
• The State already requires water suppliers to do an Annual Water Supply & Demand Assessment (AWSDA) to assess whether a supply shortage may occur in the coming year if drought conditions occur, and to determine which Water Shortage Contingency Plan (WSCP) stage and actions to implement. 11 INFO
1 SUPPLY ASSESSMENT ACTIONS
Provide
information about
the water system
being assessed
DEMAND
2 Estimate water
demands for the
coming year
3 Estimate water
supplies available
from each source
for the coming
year
4 Compare supplies
to demands to
determine whether
a supply shortage
may occur, and at
what percent (or
stage)
5 Determine which
WSCP stage and
actions to
implement to close
the projected gap,
if any
23 Drought Response Actions
• Reviewed stages and response actions for Rialto, WVWD, FUWC, and Colton WSCPs
• Generally, each agency implements the same or very similar response actions, but the stage in which each action is implemented may differ. 12 Normal
Conditions 10% 15% 20% 25% 30% 35% 40% 45% 50% >50%
Rialto Stage 1 Stage 2 Stage 3 Stage 4
WVWD Stage 1 Stage 2 Stage 3 Stage 4
FUWC Stage 1 Stage 2 Stage 3 Stage 4 Stage 5 Stage 6
Colton Stage 1 Stage 2 Stage 3 Stage 4
24 Response Actions
• Performed a detailed analysis of Rialto’s current response actions in the WSCP
• Recommendations for Rialto to consider incorporating or enhancing as part of the next WSCP update:
• Communication & Outreach to better engage City residents on shortage stages and actions they can take to help respond to drought conditions • Rebates to reduce water use
• Flexible language to provide the City Manager or their designee flexibility to respond and comply with executive orders and state mandates
• State’s six standard shortage stages corresponding to 10% shortage intervals 1325
Education & Engagement Plan
The Education and Engagement Plan aims
to effectively engage and inform the
community about Rialto’s DCP, focusing on
the six stages of water shortage and
associated drought response actions. The
goal is to promote water conservation,
raise awareness about the severity of the
drought, and guide residents through the
necessary measures to mitigate its impact.
This plan was developed using the input
received during Drought Task Force
Workshop #4, which focused on Drought
Communication.
1426
Vulnerability Assessment
• Analyzed each supply source:
• Bunker Hill subbasin
• Lytle Creek subbasin
• Rialto-Colton Basin
• Riverside North Basin
• Lytle Creek Surface Water
• Imported Water
• Other / All
• Based on
• Task Force Vulnerability Assessment Workshop
• 2020 IRUWMP
• Other Regional Documents
• Other Known Issues
15 CLIMATE CHANGE
VULNERABILITY CATEGORIES
EXTENDED DROUGHT
INFRASTRUCTURE
ADMINISTRATIVE, REGULATORY
& ENVIRONMENTAL
WATER QUALITY
27 Vulnerability Assessment
16 Likelihood
Low Vulnerability could occur once every 10 years
Moderate Vulnerability could occur at least 3 times every 10 years
High Vulnerability could occur at least 5 or more times every 10 years
Impact
Low
If the vulnerability were to occur, it would minimally
impact the water supply and/or ability to operate.
Agencies could absorb impacts within existing
operations.
Moderate
If the vulnerability were to occur, it would noticeably impact the water supply and/or ability to operate.
Agencies could adapt with existing resources relatively quickly.
High
If the vulnerability were to occur, it would significantly impact the water supply and/or ability to operate.
Adaptation could have a significant cost or require
substantial time to implement.
28 Mitigation Actions
• Organized into
• Projects: existing capital improvement project that is well defined • Opportunities: high-level concept that would require additional exploration to assess feasibility and define an implement approach
• Ongoing Actions: currently occurring actions or programs that are planned to continue
• Prioritized based on the highest risk score of the vulnerabilities mitigated 17 34 35
40 0
5 10
15 20
25 30
35 40
45 1 2 3
No. of Mitigation Actions
Mitigation Action Priority
Project Opportunity Ongoing Action Total Number of Actions 29 Mitigation Actions
• Construct groundwater recharge projects, where and when possible, particularly on the west side of the San Bernardino Valley region (i.e Cactus Recharge Basins)
• Maintain and expand collaboration and communication among agencies for shared water resources.
• Construct additional wells for increased supply reliability in the Bunker Hill subbasin for use when rights within the Rialto-Colton Basin are reduced and when Rialto-Colton Basin/Lytle Creek subbasin wells are impacted by water quality issues.
• Construct well-specific treatment, as required, to maintain existing supply assets.
18 KEY TAKEAWAYS: PRIORITY 1 MITIGATION ACTIONS
30 Operational & Administrative Framework
19 • Ongoing conversations expected to continue at the regional level • Rialto Basin Groundwater Council
• Basin Technical Advisory Committee (BTAC)
• San Bernardino Basin Optimization Program
• Each agency will complete their own Annual Water Supply and Demand Assessment and their respective governing bodies will enact the appropriate WSCP response actions
• Each agency will implement its own mitigation actions/projects, and collaborate on regional projects as appropriate
• DCP may be updated every five years, after the completion of future Integrated Regional Urban Water Management Plans (IRUWMP) 31 Grant Funding Opportunities
• DCP includes a list of Federal and
State grant programs that may be
applicable to DCP projects
• USBR WaterSMART Drought
Resiliency Projects grant program
awards extra points for projects
that are part of a DCP
20 32
NEXT STEPS
15 1.Incorporate comments and
prepare Final DCP
2.Submit the Final DCP to USBR
3.Post the DCP on the City’s
website per grant requirements
33 22
Thank You!
34 2022 Drought
Contingency Plan
PUBLIC DRAFT
FEBRUARY 2024 CITY OF RIALTO
35 CITY OF RIALTO
2022 Drought Contingency
Plan PUBLIC DRAFT
FEBRUARY 2024
Prepared by Water Systems Consulting, Inc
36 ACKNOWLEDGEMENTS
The 2022 Drought Contingency Plan PUBLIC DRAFT was prepared by Water Systems Consulting, Inc. The primary authors are listed below.
Laine Carlson, P.E.
Jeroen Olthof, P.E.
Patricia Parks, EIT
Amy Stevens
Spencer Waterman
Water Systems Consulting, Inc. would like to acknowledge the significant contributions of City of Rialto. The primary contributors are listed below.
Thomas Crowley, PE
Nicole Hemmans
Toyasha Sebbag
Rialto Water Services
37 Table of Contents
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | i
TABLE OF CONTENTS
1.0 Introduction ................................ ................................ ................................ .................. 1-1
1.1 USBR WaterSMART Drought Response Program ................................ .................... 1-2
1.2 Plan Area ................................ ................................ ................................ .................. 1-3
1.3 Drought Task Force ................................ ................................ ................................ .. 1-6
1.4 Outreach and Engagement ................................ ................................ ....................... 1-6
1.5 DCP Development Process ................................ ................................ ...................... 1-7
1.6 Consistency Among Regional Documents ................................ .............................. 1-10
1.7 Regional Drought and Integrated Regional Water Management Goals ................... 1-11
2.0 Plan Area Background ................................ ................................ ................................ .. 2-1
2.1 Climate ................................ ................................ ................................ ..................... 2-2
2.2 Population ................................ ................................ ................................ ................. 2-4
2.3 Demand ................................ ................................ ................................ .................... 2-5
2.4 Supply ................................ ................................ ................................ ..................... 2-11
3.0 Drought Monitoring ................................ ................................ ................................ ....... 3-1
3.1 Current Drought Monitoring Efforts ................................ ................................ ........... 3-2
3.2 Triggers for Drought Response ................................ ................................ ............... 3-10
3.3 Drought Monitoring Tool and Dashboard ................................ ................................ 3-10
4.0 Drought Response Actions ................................ ................................ ........................... 4-1
4.1 Existing Shortage Stages and Response Actions ................................ ..................... 4-2
4.2 Rialto WSCP Analysis ................................ ................................ ............................... 4-6
4.3 Regional Coordination ................................ ................................ .............................. 4-9
5.0 Vulnerability Assessment ................................ ................................ ............................. 5-1
5.1 Drought Vulnerabilities ................................ ................................ .............................. 5-2
5.2 Other Vulnerabilities ................................ ................................ ................................ 5-11
5.3 Vulnerability Assessment ................................ ................................ ........................ 5-12
5.4 Vulnerability Assessment Summary ................................ ................................ ........ 5-22
6.0 Mitigation Actions ................................ ................................ ................................ ......... 6-1
6.1 Mitigation Action Development ................................ ................................ .................. 6-2
6.2 Prioritized Mitigation Actions Results ................................ ................................ ........ 6-3
7.0 Operational and Administrative Framework ................................ ................................ .. 7-1
7.1 Drought Response Task Force Roles and Responsibilities ................................ ....... 7-2
7.2 Drought Contingency Plan Update ................................ ................................ ............ 7-2 38 Table of Contents
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | ii
8.0 Funding Opportunities ................................ ................................ ................................ .. 8-1
8.1 Federal Funding Programs ................................ ................................ ....................... 8-2
8.2 State Funding Programs ................................ ................................ ........................... 8-5 References…………… ................................ ................................ ................................ ....... REF-1 Appendix A Drought Task Force Workshop Summaries ................................ ....................... A Appendix B City of Rialto Education and Engagement Plan ................................ ................. B Appendix C Regional Supply Description ................................ ................................ ............. C Appendix D Rialto 2023-2024 Annual Water Supply and Demand Assessment ................... D Appendix E Rialto Water Shortage Contingency Plan ................................ .......................... E Appendix F Mitigation Actions ................................ ................................ .............................. F Appendix G Urban Water Use Objectives Roadmap ................................ ............................. G Appendix H Draft Model 6-Stage WSCP Response Actions ................................ ................. H
39 List of Figures
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | iii
LIST OF FIGURES
Figure 1-1. City of Rialto and the Santa Ana River Watershed ................................ ................ 1-3 Figure 1-2. City and Water Service Providers ................................ ................................ ......... 1-5 Figure 1-3. DCP Key Steps ................................ ................................ ................................ ..... 1-7 Figure 1-4. Drought Task Force Participants Service Areas, in Relation to City Limits ............ 1-9 Figure 1-5. 2020 IRUWMP Goals ................................ ................................ .......................... 1-11 Figure 2-1. Historical Average Temperature (California Department of Water Resources, 2022) ................................ ................................ ................................ ................................ ............... 2-2 Figure 2-2. San Bernardino Basin Precipitation Index (Basin Technical Advisory Committee, January 2023) ................................ ................................ ................................ ......................... 2-3 Figure 2-3. City Population Served by Water Agency ................................ .............................. 2-4 Figure 2-4. Land Uses within the City of Rialto ................................ ................................ ........ 2-6 Figure 2-5. Designated Land Uses within the City of Rialto ................................ ..................... 2-7 Figure 2-6. Urban Water Use Objectives Regulation Overview ................................ ............... 2-9 Figure 2-7. Rialto Historical Total and Residential Water Use ................................ ............... 2-10 Figure 2-8. Preliminary UWUO Estimate ................................ ................................ ............... 2-11 Figure 2-9. Regional Supply Sources used by City Suppliers, Percentage of Agency 2020 Portfolio................................ ................................ ................................ ................................ . 2-12 Figure 2-10. Regional Supply ................................ ................................ ................................ 2-13 Figure 3-1. AWSDA Components ................................ ................................ ........................... 3-4 Figure 3-2. AWSDA Timeline ................................ ................................ ................................ .. 3-5 Figure 3-3. DCP Tool Supply Dashboard Preview ................................ ................................ . 3-11 Figure 5-1. San Bernardino Basin Historical Capacity, Percent Full ................................ ........ 5-2 Figure 5-2. San Bernardino Basin Groundwater Levels, 2022 ................................ ................. 5-3 Figure 5-3. Groundwater Contaminant Plumes ................................ ................................ ....... 5-6 Figure 5-4. Ambient Water Quality: Nitrate ................................ ................................ .............. 5-8 Figure 5-5. Bunker Hill Groundwater Management Zone ................................ ...................... 5-10 Figure 5-6. Vulnerability Risk Score Matrix ................................ ................................ ............ 5-13 40 List of Figures
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | iv
Figure 6-1. Number of Mitigation Actions Identified by Priority ................................ ................ 6-3 41 List of Tables
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | v
LIST OF TABLES
Table 1-1. DCP Elements ................................ ................................ ................................ ....... 1-2 Table 1-2. Key Stakeholders and Roles ................................ ................................ .................. 1-7 Table 1-3. Summary of Drought Task Workshops ................................ ................................ ... 1-8 Table 2-1. Percent of City Served by Water Agency ................................ ............................... 2-4 Table 2-2. City of Rialto GPCD ................................ ................................ ............................... 2-7 Table 2-3. City of Rialto Projected Demand, AFY ................................ ................................ .... 2-8 Table 2-4. Rialto Projected Supply, AFY ................................ ................................ ............... 2-14 Table 2-5. WVWD Projected Supply, AFY ................................ ................................ ............. 2-15 Table 2-6. FUWC Projected Supply, AFY ................................ ................................ .............. 2-16 Table 3-1. Existing Drought Planning and Monitoring Efforts and Relation to DCP Elements .. 3-2 Table 3-2. AWSDA Supply Data Sources ................................ ................................ ................ 3-7 Table 4-1. Standard 6-Stage WSCP ................................ ................................ ....................... 4-2 Table 4-2. Western San Bernardino Suppliers WSCP Shortage Stages ................................ . 4-3 Table 4-3. Summary of Existing Actions Implemented by Each Agency ................................ .. 4-4 Table 5-1. Historic Reductions to Pumping Rights in the Rialto Decree Area .......................... 5-4 Table 5-2. Likelihood and Impact Scoring Rubric ................................ ................................ .. 5-12 Table 5-3. Vulnerabilities Identified within the Rialto Sub-Region ................................ .......... 5-14 Table 6-1. Priority 1 Mitigation Actions and Type of Vulnerability Mitigated ............................. 6-4 Table 6-2. Priority 2 Mitigation Actions and Type of Vulnerability Mitigated ........................... 6-14 Table 6-3. Priority 3 Mitigation Actions and Type of Vulnerability Mitigated ........................... 6-18 Table 7-1. Operational and Administrative Framework Summary ................................ ............ 7-3 42 Acronyms & Abbreviations
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ACRONYMS & ABBREVIATIONS
AF Acre -feet
AFY Acre -feet per year
AMI Advanced Metering Infrastructure
AWIA America’s Water Infrastructure Act of 2018
AWSDA Annual Water Supply and Demand Assessment
AWU R Annual Water Use Report
BH Bunker Hill
BRIC Building Resilient Infrastructure and Communities BTAC Basin Technical Advisory Committee
CAL OES California Office of Emergency Services
CII Commercial , Industrial, Institutional
CIMIS California Irrigation Management Information System CIP Capital Improvement Program
CSB City of San Bernardino
CWC California Water Code
DCP Drought Contingency Plan
DIM Dedicated Irrigation Meter
DWR Department of Water Resources
DWSRF Drinking Water State Revolving Fund
EBX East Branch Expansion
EPA Environmental Protection Agency
FEMA Federal Emergency Management Agency
FUWC Fontana Union Water Company
GAC Granular Activated Carbon
GC Groundwater Council
GIS Geographical Information Systems
GMZ Groundwater Management Zone
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GPCD Gallons per Capita per Day
IBANK California Infrastructure & Economic Development Bank IRP Integrated Resource Plan
IRUWMP Integrated Regional Urban Water Management Plan IRWM Integrated Regional Water Management
IX Ion Exchange
LCGW Lytle Creek Groundwater
LCSW Lytle Cree Surface Water
MGD Million Gallons per Day
MTBE Methyl tert -Butyl Ether
NO 2 Nitrogen Dioxide
PERC Program for the Expansion of Recharge Capacity
PRV Pressure Relief Valve
PSPS Public Safety Power Shutoffs
RC Rialto -Colton
RIV Riverside North
RWQCB Regional Water Quality Control Board
RWS Rialto Water Services
SAR Santa Ana River
SBB San Bernardino Basin
SBV San Bernardino Valley
SBVWCD San Bernardino Valley Water Conservation District SCADA Supervisory Control and Data Acquisition
SCAG Southern California Association of Governments
SCE Southern California Edison
SOR System Optimization Reviews
SWP State Water Project
SWRCB State Water Resources Control Board
TAC Technical Advisory Committee
TCE Trichloroethylene
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TDS Total Dissolved Solids
TIN Total Inorganic Nitrogen
US United States
USBR United States Bureau of Reclamation
UWMP Urban Water Management Plan
UWUO Urban Water Use Objective
WFF Water Filtration Facility
WIFIA Water Infrastructure Finance & Innovation Act
WS Workshop
WSCP Water Shortage Contingency Plan
WTP Water Treatment Plant
WVWD West Valley Water District
WWTP Wastewater Treatment Plant
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1.0 Introduction
Drought is a common threat to water resources within the City of Rialto (City) and the surrounding region. As a result, the City, in partnership with the United States Bureau of Reclamation (USBR) and local stakeholders, has developed a Drought
Contingenc y Plan (DCP) to proactively plan for and protect the City against drought.
The DCP was developed by City staff and active engagement with local stakeholders that composed the DCP Drought Task Forc e. Drought Task Force members participated in many workshops to learn about the DCP and provide input on key elements of th is plan.
IN THIS S ECTIO N
• USBR WaterSMART Drought
Response Program
• Plan Area
• Drought Task Force
• Outreach and Engagement
• DCP Development Process
• Consistency Among Regional
Documents
• Regional Drought and Integrated
Regional Water Management
Goals
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1.1 USBR WaterSMART Drought Response Program
USBR supports proactive drought planning and water management through the WaterSMART Drought Response Program. This program provides financial assistance and advisory services for activities that can help prepare for and respond to drought, including drought contingency planning, drought resiliency projects, and emergency response actions. Drought resiliency projects include any specific project that increases the reliability of water supplies, improves water management, or provides benefits for fish, wildlife, and the environment (US Bureau of Reclamation, 2023). The DCP is organized into seven elements. Each element is briefly described in Table 1-1.
Table 1-1. DCP Elements
No. Element Description
1 Introduction
• Purpose, Goals, Approach
• Agency Overview
• Supply and Demand
2 Drought Monitoring • Drought Indices
• Shortage Stages
3 Vulnerability Assessment • Risks and Impacts of Drought on Critical Resources • Future Conditions
4 Mitigation Actions • List of Prioritized Actions that Address Vulnerabilities 5 Response Actions • Related to Shortage Stages
6 Operational &
Administrative Framework • Roles, Responsibilities, and Resources 7 Plan Update Process • Plan Evaluation and Future Updates The DCP provides many benefits to the City and participants of this DCP, including:
• A comprehensive evaluation of water supply vulnerabilities, focused on the City and the surrounding areas.
• An opportunity to collaborate to identify new projects that benefit multiple agencies. • A database of actions and projects that mitigate the identified vulnerabilities and help position the agencies for future grant funding opportunities to implement drought mitigation actions.
• An opportunity to promote consistent actions and messaging on drought and response actions throughout the City.
Three Important Questions Drive the DCP:
1. How will we recognize the next drought in the early stages?
2. How will drought affect us?
3. How can we protect ourselves from the next drought? 47
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1.2 Plan Area
The Upper Santa Ana River (SAR) watershed is part of the largest stream system in Southern California and covers 852 square miles within San Bernardino and Riverside counties. The Upper SAR is defined by the area that contributes surface runoff to the Riverside Narrows at U.S. Geological Survey (USGS) Gage 11066460. Details on the Upper SAR are provided in the 2020 IRUWMP.
There are many water suppliers within the Upper SAR. This DCP focuses on the City and includes details on water suppliers that provide service to customers that are located within the City limits. The City of Rialto and its relation to the Upper SAR watershed is shown in Figure 1-1.
Figure 1-1. City of Rialto and the Santa Ana River Watershed
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The City sits at the base of the San Bernardino Mountains in the interior valley known as the San Bernardino Valley within the Upper SAR. This DCP focuses on the Western San Bernardino Valley, a subset of the greater San Bernardino Valley Region, specifically focusing on the City of Rialto. The City obtains water service from three different entities: the City’s water system, referred to as the Rialto Utility Authority (RUA); West Valley Water District (WVWD); and Fontana Union Water Company (FUWC). RUA was formed in 2001 as a Joint Powers Authority (JPA) between the City and the Rialto Redevelopment Authority. The City owns the water and wastewater systems, but leases them to RUA to operate and maintain. Rialto, in 2012, entered into a concession agreement with Rialto Water Services, Inc. (RWS) to assist in operating the water and wastewater systems. RWS has also contracted with Veolia Water West Operating Services, Inc. (Veolia) for operating support services. The City of Rialto (Rialto) is the official water supplier recognized by the State and is used in this DCP to refer to the water system owned by the City.
The Rialto municipal water system provides potable and recycled water to retail customers primarily within the City and serves approximately one-half of the City population between Interstate 10 and State Route 210. The City boundary and service areas of the three water agencies that supply the City are shown in Figure 1-2. This DCP focuses on the City boundary and acknowledges the integrated nature of regional water resources and water management in this area and therefore incorporates participants and activities that lie outside the City boundary. 49 1.0 Introduction
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Figure 1-2. City and Water Service Providers
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1.3 Drought Task Force
The City recruited, convened, and engaged a Drought Task Force comprised of City staff and water managers from other agencies in the Western San Bernardino Valley that serve portions of the City or are directly engaged with the City in managing shared water resources. The Drought Task Force members offer informed perspectives to support effective drought contingency planning as a continuation of ongoing planning and existing partnerships.
Drought Task Force participants included representatives from the following agencies:
➢ City of Rialto (including operations staff)
➢ City of Colton
➢ Fontana Union Water Company
➢ San Bernardino Valley
➢ West Valley Water District
The service areas for these agencies are shown in Figure 1-4. Although the City of Colton does not directly serve customers within the City limits, the City of Colton participates in the same groundwater management councils and has a similar supply portfolio as agencies in the Western San Bernardino Valley.
Drought Task Force members participated in seven interactive workshops to inform key milestones and decisions within the DCP. The Task Force helped prioritize actions to increase regional water supply reliability and proactively address the region’s vulnerabilities to drought and other supply interruption. A summary of the various workshops conducted as part of this DCP is provided in Table 1-3. Complete workshop summaries are provided in Appendix A.
1.4 Outreach and Engagement
A key component of the DCP development includes outreach and engagement, facilitated through a Drought Task Force. The Drought Task Force was developed at the start of the DCP to provide diverse perspectives that represent interests within the planning area to help inform this DCP. The Drought Task Force is discussed in more detail in the following section. The various stakeholder groups involved in this DCP, and their role are summarized in Table 1-2.
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Table 1-2. Key Stakeholders and Roles
ROLE
Inform /
Educate
Gather
Perceptions /
Opinions
Advise Decide
STAKEHOLDER GROUP
City Staff ✓ ✓ ✓ ✓
Drought Task Force ✓ ✓ ✓ ✓
USBR Technical Grant
Contact ✓
Rialto Utilities
Commission ✓
General Public ✓
OUTREACH
One-way
communication
to educate and
inform.
ENGAGEMENT
Multi-directional communication to inform plan
decisions.
1.5 DCP Development Process
This DCP was developed using published regional resources and through collaboration among City staff and the Drought Task Force. Development of the DCP was organized into five key steps, as shown below in Figure 1-3.
Figure 1-3. DCP Key Steps
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Table 1-3. Summary of Drought Task Workshops
Workshop
No. Topic Workshop Goals
1 Drought Task Force
Kickoff
• Introduce DCP and various components.
• Identify opportunities for the DCP to build on and
integrate with other regional initiatives.
• Identify desired outcomes for the DCP.
• Build shared clarity on project, Task Force’s role, and engagement activities.
2 Drought Monitoring
and Response
• Review and update existing drought monitoring
procedures for the City (how water supply conditions are monitored, how future supply conditions are projected)
and identify any new ideas or planned procedures.
• Review the various response actions in the City’s current Water Shortage Contingency Plan and develop a model
framework of response actions that aligns with the
California Water Code (CWC) six standard shortage
stages. Maintain consistency with State drought response regulations.
3 Drought Response
Part 2
• Continuation of Workshop 2. Review the various
response actions in the City’s current Water Shortage
Contingency Plan and develop a model framework of
response actions that aligns with the CWC six standard
shortage stages and actions. Maintain consistency with State drought response regulations.
4 Education and
Engagement
• Identify key communication topics and strategies for
engaging with customers.
• Discussions to be documented in an Education and
Engagement Plan and included as an Appendix C.
5 Vulnerability
Assessment
• Summarize previously identified vulnerabilities, refine and expand as needed.
• Rank vulnerabilities in terms of impact to drought
resilience.
6 Mitigation Actions
• Identify existing projects and planning efforts that will mitigate vulnerabilities.
• Brainstorm potential additional drought mitigation actions and benefits.
• Prioritize actions and discuss implementation
considerations.
7 Draft DCP Plan • Review the draft DCP and solicit input/comments.
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Figure 1-4. Drought Task Force Participants Service Areas, in Relation to City Limits 54 1.0 Introduction
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1.6 Consistency Among Regional Documents
The City and the other members of the Drought Task Force have participated in many regional planning efforts. The San Bernardino Valley Region continues to actively plan for and implement projects and opportunities to increase the resiliency of regional supply sources. As a result, many existing planning documents have been completed and were used to inform this DCP. Notably, population, supply, and demand projections were developed as part of the 2020 Upper Santa Ana River Watershed Integrated Regional Urban Water Management Plan (2020 IRUWMP), finalized in 2021. The 2020 IRUWMP is a foundational part of water planning in the region and integrates with many other regional and local planning efforts for planning consistency. The 2020 IRUWMP provides detailed information about the region, including population, land uses, climate characteristics, and regional demand and water supply sources.
Additionally, the management of water supply sources within the region is explained. The 2020 IRUWMP also includes a project list to support the region’s goals and objectives. The 2020 IRUMWP project list was integrated into the mitigation actions developed for this DCP. This DCP also builds upon the projections developed in the 2020 IRUWMP for the City of Rialto.
The IRUWMP is available at
https://www.sbvmwd.com/reports/reports/-folder-1120.
2020 Upper Santa Ana River Watershed Integrated Regional Urban Water Management Plan
The 2020 IRUWMP is available at
https://www.sbvmwd.com/reports/reports/-folder-1120. 55
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1.7 Regional Drought and Integrated Regional Water
Management Goals
As part of the 2020 IRUWMP, regional water managers, including those on the Drought Task Force, developed five goals to guide integrated regional water management (IRWM) efforts, shown in Figure 1-5. These goals are consistent with the purpose of this DCP and are used as the regional drought goals for this DCP.
Figure 1-5. 2020 IRUWMP Goals
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2.0 Plan Area Background
The City is located in San Bernardino County, within the Upper Santa Ana River (Upper SAR) Watershed . Customers located within the City obtain water service from either the City through the Rial to Utility Authority , West Valley Water District, or Fontana Union Water Company. Population and demand
estimates for the City and water resources used in the Western San Bernardino region are described in this section .
IN THIS S ECTIO N
• Climate
• Population
• Demand
• Supply
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2.1 Climate
Climate in the region is characterized by relatively hot, dry summers and cool winters with intermittent precipitation. Historical precipitation and temperature data from the California Irrigation Management Information System (CIMIS), published by the California Department of Water Resources (DWR) for station 44 at the University of California, Riverside was used to analyze historical trends in this area. Between 1990 and 2020, the annual average temperature was 64°F, as shown in Figure 2-1. The 2020 IRUWMP provides additional information on the climate within the SAR watershed. Potential impacts from climate change are discussed in Section 4.0 of this DCP.
The Basin Technical Advisory Committee (BTAC) for the San Bernardino Basin also maintains a record of historical precipitation, including a log of the cumulative departure from mean precipitation since 1930. This data is based on the average precipitation in the Lytle Creek, Santa Ana River and Mill Creek areas and is updated every year and published in the BTAC’s Annual Regional Water Management Plan. The historical precipitation for the region, as of 2022, is provided in Figure 2-2. The cumulative departure from mean precipitation indicates that the region has historically experienced long periods of below-average precipitation lasting more than 30 years, such as during the period from 1947 to 1977. The region is currently experiencing another extend dry period which began in 1999 and has been more severe than prior droughts.
Figure 2-1. Historical Average Temperature (California Department of Water Resources, 2022)
61 62
63 64
65 66
67 1990 1995 2000 2005 2010 2015 2020
Annual Average Temperature (°F)
Average Temperature 1990-2020 Annual Average Temperature 58 2.0 Plan Area Background
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Figure 2-2. San Bernardino Basin Precipitation Index (Basin Technical Advisory Committee, January 2023) -225
-200
-175
-150
-125
-100
-75
-50
-25
0 25
50 75
100
125
150
175
200
225
250
275
300
325
350
375
400
425
0 10
20 30
40 50
60 70
80 90
1930-31
1932-33
1934-35
1936-37
1938-39
1940-41
1942-43
1944-45
1946-47
1948-49
1950-51
1952-53
1954-55
1956-57
1958-59
1960-61
1962-63
1964-65
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2004-05
2006-07
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2010-11
2012-13
2014-15
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2018-19
2020-21
Precipitation Index
Average Annual Precipitation (in.)
Water Year
Average of Lytle Creek / Big Bear (SAR) / Mill Creek - Precip Data Historic Average (1931-Present)
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2.2 Population
2.2.1 Population within the City of Rialto
The total population within the City of Rialto was calculated using Geographic Information Systems (GIS) spatial analysis tools and based on published 2020 Census data and projected future population growth estimated by the Southern California Association of Governments (SCAG). SCAG developed a demographics and growth forecast for the 2020 Connect SoCal Regional Transportation Plan that includes estimated population, households, and employment in 2020, 2035, and 2045 for each traffic analysis zone (TAZ). The City boundary was intersected with a GIS shapefile of the SCAG TAZs to calculate the estimated growth rates for 2035 and 2045. These rates were applied to the 2020 Census population for the City to estimate future population within the City. The percentage of the City served by each water supplier is provided in Table 2-1 and results of the projected population estimate is provided in Figure 2-3.
Table 2-1. Percent of City Served by Water Agency
Water Agency Percent of City Served by Agency based on
Area
Rialto 52%
West Valley Water District 43%
Fontana Union Water Company 5%
Figure 2-3. City Population Served by Water Agency
104,026
110,982
118,404
126,321 132,157 138,262
0 20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
2020 2025 2030 2035 2040 2045
Rialto WVWD FUWC City Population
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2.3 Demand
2.3.1 City Land Use
SCAG’s growth projections are based on local and regional land use data. The land use information was intersected with the City boundary using GIS to identify the various types of land uses and associated customer demand within the City’s jurisdiction. The various land uses identified within the City are presented in Figure 2-4, and the breakdown of land use type within the City is shown in Figure 2-5. Based on this analysis, the majority of land within the City is designated as single-family residential.
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Figure 2-4. Land Uses within the City of Rialto
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Figure 2-5. Designated Land Uses within the City of Rialto
2.3.2 Estimated City Demand
To estimate demand within the City, the weighted average of gallons per capita per day (gpcd) based on 2020 gpcd data was applied to the City population. The weighted average gpcd, provided in Table 2-2, was applied to the City population identified in Figure 2-3 to estimate future demand, as summarized in Table 2-3.
Table 2-2. City of Rialto GPCD
Water Agency
Estimated 2020 City
Population within Water
Supplier Service Area
2020 GPCD
Rialto Utility Authority 54,094 143
West Valley Water District 44,731 201
Fontana Union Water Company 5,201 149
Total City Population 104,026
Weighted Average GPCD 169
Single Family
Residential, 36%
Multi-Family
Residential, 0.1%
Mixed Residential
and Commercial,
0.4%
Commercial and
Services, 2%General Office, 4%
Facilities, 3%Education, 3%
Industrial, 18%
Transportation,
Communications, and
Utilities, 9%
Open Space and
Recreation, 3%
Undevelopable or
Protected Land,
0.004%
Specific Plan, 22%
Other, 0.2%
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Table 2-3. City of Rialto Projected Demand, AFY
2025 2030 2035 2040 2045
City Population 110,982 118,404 126,321 132,157 138,262 Average gpcd 169 169 169 169 169
Demand, AFY 21,009 22,414 23,913 25,018 26,174
Note: City population determined using GIS tools and based on 2020 Census population and estimated growth rates from SCAG.
2.3.3 Urban Water Use Objectives
The California State Water Resources Control Board (SWRCB) is in the process of developing and adopting Urban Water Use Objectives (UWUO) for retail water suppliers. Rialto, WVWD, and FUWC will be required to comply with these new regulations. The UWUOs focus on water use efficiency and align with the Making Conservation a California Way of Life regulation.
The UWUO were not yet developed at the time of the 2020 IRUWMP and are not factored into the demand projections presented in the 2020 IRUWMP and in this DCP. Achieving compliance with the UWUO will require significant reductions in water demand by 2035 below what was projected in the 2020 IRUWMP as well as significant staff time to collect, refine and report customer and demand data to the SWRCB to monitor efforts and results toward compliance.
The proposed UWUO requirements are extensive and are likely to drive many of the priorities and actions for Rialto over the next 10+ years related to conservation, customer education and engagement, demand management, and water loss reduction. These efforts also align with the components of the DCP and will contribute to enhanced drought preparedness. Therefore, this DCP is structured to align with and support compliance with the proposed UWUO as well as other State water supply and demand management and reporting requirements. Elements of UWUO regulations are integrated with the Drought Monitoring process (Section 3.0) and Mitigation Actions (Section 5.0).
2.3.3.1 UWUO Overview
The UWUO is composed of several standards to create one comprehensive objective, as shown in Figure 2-6.
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Figure 2-6. Urban Water Use Objectives Regulation Overview Based on draft regulations published at the time of this DCP, only the indoor residential standard and water loss standard have been finalized.
Indoor Residential
The indoor residential water use standard was set as part of Senate Bill (SB) 1157, which adopts recommendations made by DWR and the State Water Board to reduce indoor water use targets from 55 gpcd to 47 gpcd by 2025 and 42 gpcd by 2030.
Outdoor Residential
Outdoor residential use is expected to be based on the amount of irrigable area and an increasingly stringent landscape efficiency factor with compliance progress measured annually through 2035, when the efficiency factor is proposed to remain constant. The SWRCB is assisting agencies in calculating outdoor residential use budgets by providing aerial imagery that delineates irrigable irrigated, irrigable but not irrigated, and non-irrigable areas. This data has been provided to suppliers and is expected to be updated in five-year cycles.
Commercial, Industrial, and Institutional Landscape
Commercial, industrial, and institutional (CII) standards will be based on total gallons used and will require implementation of dedicated irrigation meters or in-lieu technologies, and other performance measures for conservation. Additionally, CII customer accounts will need to be classified into specific and general categories for reporting and compliance over the course of several years yet to be determined by the State.
Water Loss
The water loss component of the UWUO is a standalone component that must be met on its own. For Rialto, the water loss standard is 18 gallons per connection per day by 2028. Based on average water loss from 2017-2019 compared to the calculated 2028 standard, Rialto’s water losses are approximately 261 AFY greater than its water loss standard.
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Based on draft regulations published at the time of this DCP, the SWRCB can issue informational orders (2024), written notices (2025), conservation orders (2026), or civil liability fines (2027) to water suppliers that do not meet their UWUO.
2.3.3.2 Rialto Preliminary UWUO Estimate
WSC prepared a preliminary evaluation of the UWUO for the Rialto water service area.
Historical Rialto residential water use is shown in Figure 2-7. Based on average water use from 2017 through 2019, reductions in water use (shown in Figure 2-8) for Rialto’s service area will be required to meet the UWUO.
Figure 2-7. Rialto Historical Total and Residential Water Use
50 66
52 69 68
0 50
100
150
200
0 2,000
4,000
6,000
8,000
10,000
2017 2018 2019 2020 2021
GPCD
Water Use, AFY
Total GPCD Residential GPCD Residential Indoor GPCD
Residential Use
Residential Indoor Use
Total Use
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Figure 2-8. Preliminary UWUO Estimate
Based on the draft State guidance and preliminary estimates shown, it is expected that Rialto will need to reduce its overall water demand by 19% by 2035. As a starting point, Rialto should consider focusing on reducing indoor residential water use, since residential water use is Rialto’s largest customer category. To assist in achieving reductions, a UWUO Roadmap was created based on the preliminary estimate to help guide Rialto staff in meeting the State requirements and achieving compliance. The UWUO Roadmap is included as a mitigation action and detailed in Appendix G. Additionally, an Education and Engagement Plan has been developed and is included in this DCP to support response and mitigation actions, as described in Section 4.2.2. The complete Education and Engagement Plan is provided in Appendix C.
Although not explicitly calculated for WVWD and FUWC, WVWD and FUWC will likely need to reduce customer water use to comply with the UWUO regulations.
2.4 Supply
The 2020 IRUWMP provides a comprehensive explanation of the region, including descriptions of all the water agencies in the area and the regional water sources and management. In this region, a variety of sources are used: imported water, groundwater from many different basins, recycled water, and transfers, exchanges, and groundwater recharge programs are exercised.
For a complete description of the many sources used in this region, refer to Part 1, Chapter 3 of 67 2.0 Plan Area Background
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the 2020 IRUWMP. The 2020 IRUWMP is available on San Bernardino Valley’s website at https://www.sbvmwd.com/reports/reports/-folder-1120.
Rialto generally relies on groundwater from the San Bernardino Basin (SBB) (which includes the Bunker Hill subbasin and Lytle Creek subbasin), Rialto-Colton, and Riverside North groundwater basins. A portion of the Bunker Hill subbasin supply is delivered through a shared system of wells and conveyance facilities called the Baseline Feeder. Rialto also has rights to surface water from Lytle Creek that is treated at WVWD’s Oliver P. Roemer Water Filtration Plant (Roemer WFF). Rialto has a 25% share of the original 6 million gallons per day (MGD) plant capacity of Roemer WFF. Rialto historically used a small amount of recycled water to serve one irrigation customer, although this use has recently been discontinued and may not resume. In the future, Rialto may contribute to the purchase of imported water from the State Water Project (SWP) to recharge the Rialto-Colton Basin, if a recharge site can be developed.
WVWD uses these same sources, as well as SWP water purchased from San Bernardino Valley and treated at Roemer WFF. FUWC uses many of the same sources, as well as groundwater from the Chino Basin. Details on each of these water supply sources are provided in Part 1, Chapter 3 of the 2020 IRUWMP and attached as Appendix C to this DCP.
The various sources used to meet demands within the service areas of Rialto, WVWD, and FUWC are identified in Figure 2-9 and Figure 2-10.
Figure 2-9. Regional Supply Sources used by City Suppliers, Percentage of Agency 2020 Portfolio 68 2.0 Plan Area Background
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Figure 2-10. Regional Supply
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2.4.1 Supply Projections
Rialto, WVWD, and FUWC plan to continue to utilize existing supply sources. Supply projections, developed in the 2020 IRUWMP are summarized in Table 2-4 and Table 2-5 for Rialto and WVWD. Supply projections for FUWC is summarized in Table 2-6, developed in FUWC’s 2020 UWMP. These values are reflective of a “normal year” supply. Drought impacts to supply are discussed in Section 4.0.
Table 2-4. Rialto Projected Supply, AFY
Source 2025 2030 2035 2040 2045
Groundwater
Bunker Hill
subbasin 2,580 3,227 3,875 4,270 4,665
Baseline Feeder
(Bunker Hill
subbasin)
2,500 2,500 2,500 2,500 2,500
Lytle Creek
subbasin 1,600 1,600 1,600 1,600 1,600
Rialto-Colton Basin 1,528 1,557 1,586 1,614 1,642
Riverside North
Basin 1,200 1,200 1,200 1,200 1,200
Surface
Water
SWP –
Supplemental
Supply for Rialto-
Colton
384 412 440 469 498
Lytle Creek 1,241 1,241 1,241 1,241 1,241
Recycled
Water Rialto
Wastewater
Treatment Plant
(WWTP)
10 10 10 10 10
Total 11,043 11,747 12,451 12,903 13,355
Source: Table 5-12 of the 2020 IRUWMP (Water Systems Consulting, Inc. & Woodard & Curran, June 2021).
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Table 2-5. WVWD Projected Supply, AFY
Source 2025 2030 2035 2040 2045
Groundwater
Bunker Hill
subbasin 2,052 2,353 3,554 4,754 6,455
Baseline Feeder
(Bunker Hill
subbasin)
5,000 5,000 5,000 5,000 5,000
Lytle Creek
subbasin 2,900 2,900 2,900 2,900 2,900
Rialto-Colton
Basin 4,426 4,538 4,650 4,761 4,873
Riverside North
Basin 2,500 3,000 3,500 4,000 4,000
Chino Basin 0 900 900 900 900
Surface
Water
SWP –
Supplemental
Supply for Rialto-
Colton
0 0 0 0 0
Lytle Creek 3,100 3,100 3,100 3,100 3,100
Imported
Water State Water
Project – Direct
Delivery
7,000 7,000 7,000 7,000 7,000
Total 26,978 28,791 30,603 32,415 34,229
Source: Table 10-11 of the 2020 IRUWMP (Water Systems Consulting, Inc. & Woodard & Curran, June 2021)
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Table 2-6. FUWC Projected Supply, AFY
Source 2025 2030 2035 2040 2045
Groundwater Lytle Creek
subbasin 6,390 6,390 6,390 6,390 6,390
Rialto-Colton
Basin 5,865 5,976 6,087 6,199 6,310
Chino Basin 9,278 9,983 11,128 12,293 13,183
Surface
Water
Lytle Creek 4,860 4,860 4,860 4,860 4,860
Imported
Water Inland Empire
Utilities Agency 15,000 15,000 15,000 15,000 15,000
San Bernardino
Valley 3,200 3,200 3,200 3,200 3,200
Recycled
Water
Inland Empire
Utilities Agency 1,000 1,500 2,000 2,500 3,000
Total 45,593 46,909 48,665 50,442 51,943
Source: Table 6-12 of FUWC’s 2020 UWMP (West Yost for San Gabriel Valley Water Company Fontana Water Company Division, June 2021).
2.4.2 Water Supply Reliability
As noted in the previous section, the region’s water supply portfolio is diverse and composed of supply from local groundwater, local surface water, recycled water, stormwater, and imported water. As part of the 2020 IRUWMP, the regional resources were analyzed under normal, single-dry, and five-consecutive dry years, as well as a 30-year drought. Details on water supply reliability for Rialto, WVWD, and FUWC are included in their respective UWMPs.
2.4.2.1 Reliability Assessment
A reliability assessment was conducted in the 2020 IRUWMP for entire San Bernardino Valley Region for normal, single-dry, 5-year, and 30-year consecutive dry conditions. The reliability assessment indicated that the region has sufficient supply for various dry-year and multiple dry- year scenarios. However, there are numerous vulnerabilities that may impact short- and long- term supply reliability. The agencies in the Region will continue to collaborate on proactive planning efforts, like this DCP, to regularly assess vulnerabilities and identify and implement projects and actions to mitigate such vulnerabilities and maintain long-term supply reliability.
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3.0 Drought Monitoring
The drought monitoring framework establishes a process for monitoring near - and long -term water availability and a framework for predicting future droughts or confirming the presence of a drought. The water agencies within this region have recently updated their Water Shortage Contingency Plans (WSCPs) , which are required by the California Water Code .
The WSCP includes an Annual Water Supply and Demand
Assessment that forms the basis of drought monitoring
procedures for Rialto and other water supplier s.
IN THIS S ECTIO N
• Current Drought Monitoring
Efforts
• Triggers for Drought Response
• Drought Monitoring Tool and
Dashboard
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3.1 Current Drought Monitoring Efforts
There are many existing efforts within the region that are currently being implemented to support sustainable water resource management and prepare for future recurring droughts. Ongoing efforts and how they align with the elements of this DCP are summarized in Table 3-1. Additional details on the committees and documents that are most relevant to the drought monitoring framework for this DCP are discussed in more detail in the following sections.
Table 3-1. Existing Drought Planning and Monitoring Efforts and Relation to DCP Elements Existing Drought
Planning and
Monitoring Efforts
Drought Contingency Plan Element
SUPPLY &
DEMAND
DROUGHT
MONITORING
VULNERABILITY
ASSESSMENT
MITIGATION
ACTIONS
RESPONSE
ACTIONS
2020 IRUWMP ✓ ✓ ✓ ✓ ✓
Agency WSCPs ✓ ✓
Annual Water Supply
and Demand
Assessments
✓ ✓ ✓
Urban Water Use
Objectives ✓ ✓ ✓
AWIA Risk & Resiliency
Assessment &
Emergency Response
Plans
✓ ✓ ✓
Local Hazard Mitigation
Plans ✓ ✓ ✓
Rialto 2021 Climate
Adaptation Plan ✓ ✓
Local Agency Facility
Master Plans ✓ ✓ ✓
Rialto Basin
Groundwater
Management Plan
✓ ✓ ✓ ✓ ✓
Basin Technical Advisory
Committee ✓ ✓ ✓ ✓
San Bernardino
Groundwater Council ✓ ✓ ✓ ✓
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Existing Drought
Planning and
Monitoring Efforts
Drought Contingency Plan Element
SUPPLY &
DEMAND
DROUGHT
MONITORING
VULNERABILITY
ASSESSMENT
MITIGATION
ACTIONS
RESPONSE
ACTIONS
RAND Water Supply &
Demand Analysis (2021
& 2022)
✓
San Bernardino Valley
Demand Management
Program
✓ ✓
San Bernardino Valley
Groundwater Change in
Storage Calculations
✓ ✓
San Bernardino Valley
Climate Adaptation &
Resilience Plan
✓ ✓
One Water One
Watershed Plan ✓ ✓
USBR Climate Change
Analysis for the SAR
Watershed
✓ ✓ ✓
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3.1.1 State Drought Reporting
3.1.1.1 Annual Water Supply and Demand Assessments
Every five years, urban water retailer suppliers are required to complete a UWMP and a WSCP, in accordance with the CWC. The WSCP is a standalone document that outlines a supplier’s procedures for preparing for and responding to a water shortage emergency, including triggers and associated actions depending on the severity of the shortage. The WSCP is discussed further in Section 6, Drought Response Actions.
A key component of a WSCP is an Annual Water Supply and Demand Assessment (AWSDA) that must be completed by July 1 of every year, as indicated by the CWC Section 10632.1. The AWSDA process is the basis for the drought monitoring framework in the DCP. The AWSDA is an evaluation of the near-term outlook of supplies and demands to determine whether the potential for a supply shortage exists and if the supplier will need to trigger response actions in their WSCP to maintain water service reliability during the shortage conditions. The various tables that compose the AWSDA and a summary of their contents are shown in Figure 3-1. A copy of the most recent AWSDA prepared by Rialto is in Appendix D.
Figure 3-1. AWSDA Components
To complete the AWSDA process, Rialto convenes an internal WSCP Team composed of the Utilities Manager, Conservation Coordinator, and RWS operations staff. The complete procedure for conducting the AWSDA is outlined in the City’s WSCP, which is provided in Appendix E. During development of this DCP, the Drought Task Force conducted an in-depth review of Rialto’s existing AWSDA process as part of Workshop #2. This discussion identified the best data sources for projecting supply and demand for the coming year as well as ideas to improve future assessments and data consistency with other water use reports required by the State. A summary of the Rialto AWSDA process is provided in Figure 3-2. Other members of the Drought Task Force use similar procedures, which are documented in their respective WSCPs. A complete summary of the Drought Task Force Workshop #2 is provided in Appendix A.
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Figure 3-2. AWSDA Timeline
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Demand Estimates
For each AWSDA, Rialto will estimate demands for the coming year based on the average demand for the previous 3-year period. Water production records will be used as the source of data for prior demands because they represent the total water use, including leaks, meter inaccuracies, and non-billed use. Rialto is not expecting to experience significant growth in its service area, so it is likely not necessary to adjust the previous 3-year average demand to account for additional customers, but estimates can be adjusted as needed in the future if growth becomes a significant factor in demand changes from year to year. The AWSDA is intended to represent dry-year demands, so the previous 3-year average demands may be scaled up if needed to account for expected increases in demand in a dry year, typically driven by increased outdoor water use. The dry year increase factor, if used, will be selected by Rialto based on conditions at the time of the assessment, and may vary from 0 to 10%.
Supply Estimates
Rialto obtains supply primarily from groundwater and surface water sources. Supply estimates are based on several factors, including precipitation, groundwater levels, well pumping capacity, and Rialto’s allocated pumping rights, where applicable. The supply estimate also incorporates operational considerations that may impact supply availability, such as wells that are offline due to water quality issues or low water levels and planned outages of production facilities for maintenance. The data sources used to estimate available supply, including Rialto’s water rights, are shown in Table 3-2.
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Table 3-2. AWSDA Supply Data Sources
Supply Data Sources
Bunker Hill subbasin
Allowable pumping not limited, based on the 1969 Western-San Bernardino Judgment. Expected supply is based on the total pumping capacity of all operational wells in the subbasin.
Lytle Creek
Available flow within the creek; which is dependent on precipitation within local mountains. Poor water quality following large storm events can limit the amount of water that can be treated in some years.
Lytle Creek subbasin
Allocation based on the 1924 Lytle Judgment. Expected supply is based on the total pumping capacity of all operational wells in the subbasin, accounting for reductions in pumping capacity when groundwater levels are low.
Rialto-Colton Basin
In May, San Bernardino Valley provides a Rialto Basin Decree Letter that summarizes the groundwater levels within the indicator wells established in the 1961 Decree and the associated allocation reduction for each Rialto Basin user. Expected supply is based on the total pumping capacity of all operational wells in the subbasin but limited by Rialto’s total pumping allocation.
Riverside North Basin
Allowable pumping not limited, based on the 1969 Western-San Bernardino Judgment. Expected supply is based on the total pumping capacity of all operational wells in the subbasin.
Baseline Feeder
Bunker Hill groundwater purchased water from San Bernardino Valley (up to 2,500 AFY) or San Bernardino Municipal Water Department and delivered through the Baseline Feeder system.
Note: Additional details on the supply sources identified above are provided in Part 1, Chapter 3 of the 2020 IRUWMP.
3.1.1.2 SWRCB Monthly Drought and Conservation Reports
Starting in January 2023, the SWRCB issued Order DDW_HQ_DROUGHT2023_01 requiring technical reporting in response to drought and established the Monthly Drought and Conservation Reports (monthly drought reports) to help suppliers better evaluate system conditions and reduce ongoing reporting efforts, such as the Electronic Annual Report. As a result, Rialto and the other Drought Task Force members actively monitor drought conditions monthly, in addition to projecting potential drought condition for the coming year as part of the AWSDA. The monthly drought reports can be submitted on a quarterly basis through on online tool, SAFER Clearinghouse, accessible at drought.waterboards.ca.gov. The monthly drought reports include details on supply, demand, forecasted water shortages, and demand reduction or supply augmentation measures. If the SWRCB determines that any public water system is at risk or experiencing a severe water shortage, the SWRCB may require suppliers to submit the monthly drought reports on a more frequent basis (weekly and/or monthly).
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3.1.2 Regional Management Groups
3.1.2.1 Basin Technical Advisory Committee
The Basin Technical Advisory Committee (BTAC) was formed to implement the 2007 Upper Santa Ana River Watershed Integrated Regional Water Management Plan (IRWM Plan) that encourages integrated regional planning for the Upper Santa Ana River Watershed. The BTAC’s existing efforts include supply and demand monitoring and forecasting, drought monitoring, and mitigation and response efforts that align with the goals of this DCP. There are currently 16 agencies that participate in the BTAC, including the cities of Rialto and Colton, FUWC, WVWD, and San Bernardino Valley. The BTAC is open to any agency that wishes to join and encourages involvement of all stakeholders and the public. The BTAC also publishes an Annual Regional Water Management Plan that monitors the health of the San Bernardino Basin. The Annual Regional Water Management Plan provides recommendations on where to recharge imported water within the San Bernardino Basin and other local basins. As noted in Section 2.1, the Annual Regional Water Management Plan also publishes precipitation data for the San Bernardino Basin dating back to 1930 and depicts the cumulative departure from the historic mean precipitation. Additional details on the IRWM Plan and BTAC are provided in the 2020 IRUWMP.
3.1.2.2 San Bernardino Basin Groundwater Council
The San Bernardino Basin Groundwater Council (SBB Groundwater Council) is composed of the SBVWCD, San Bernardino Valley, San Bernardino Municipal Water Department, East Valley Water District, Bear Valley Mutual Water Company, Yucaipa Valley Water District, Loma Linda University, West Valley Water District and the cities of Loma Linda, Rialto, Colton, and Redlands. These agencies work together to collaboratively manage water resources in the San Bernardino Basin, including consistent monitoring of groundwater and surface water extractions, groundwater levels and funding and implementation of supplemental recharge of the SBB.
3.1.2.3 Rialto Basin Groundwater Council and Technical Advisory Committee The Rialto Basin Groundwater Council (GC) was formed in 2021 as part of the Settlement Agreement to assist in managing production from the Rialto Basin, including production from “No Man’s Land” that is outside the boundary of the Rialto Basin in the 1961 Decree but is believed to be within the Rialto-Colton subbasin. Members of the Rialto Basin GC include the cities of Rialto, Colton, FUWC, WVWD, and San Bernardino Valley.
The Rialto Basin GC has contracted Stetson Engineers Inc. to assist in developing a Rialto Basin Groundwater Management Plan. The Rialto Basin Groundwater Management Plan is envisioned to be an adaptive plan that will assist in sustainably managing extraction and recharge activities throughout the Rialto Basin. Development of the Rialto Basin Groundwater 80 3.0 Drought Monitoring
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Management Plan is ongoing at the time of this DCP. Once complete, the Rialto Basin Groundwater Management Plan is expected to provide data and analysis that will assist the members of the Rialto Basin GC in monitoring and predicting the impacts of future drought.
3.1.3 Data Sources
3.1.3.1 San Bernardino Basin Data
San Bernardino Basin Groundwater Storage Dashboard
San Bernardino Valley publishes information on the San Bernardino Basin on its website for the current water year as well as historical data, including the percent full and annual change in storage for the San Bernardino Basin, as well as precipitation amounts. This information is available through the Groundwater Storage Dashboard at
https://sbvmwd.maps.arcgis.com/home/index.html and routinely reviewed at BTAC meetings when new information is developed. This information helps water agencies more easily monitor groundwater level trends and anticipate potential drought impacts.
San Bernardino Valley Water Conservation District Bunker Hill Basin Engineering Investigation Reports
San Bernardino Valley Water Conservation District (SBVWCD or Conservation District) also gathers data on the San Bernardino Basin and publishes annual reports that graphically outline the groundwater elevation contours throughout the San Bernardino Basin.
3.1.3.2 California Water Watch
DWR maintains a California Water Watch website that tracks water conditions throughout the state of California. Users can view local water conditions by entering an address or searching on the posted current drought map. The site, which can be accessed at https://cww.water.ca.gov, provide information including precipitation, temperature, reservoir levels, streamflow, groundwater, snowpack, soil moisture, and vegetation conditions. Many local agencies use this resource to identify current conditions for surface water bodies such as Lytle Creek.
3.1.3.3 US Drought Monitor
The US Drought Monitor provides weekly updates on weather and drought conditions throughout the contiguous US and classifies intensity and impacts based on various drought severity indices. Drought severity is ranked from a value of none (no impact) up to D4, exceptional drought (National Drought Mitigation Center, 2022). The latest US Drought Monitor information can be accessed at https://droughtmonitor.unl.edu/. 81 3.0 Drought Monitoring
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3.2 Triggers for Drought Response
Rialto and other local agencies may recognize drought based on several indicators:
➢ AWSDA: The AWSDA is the primary process for drought monitoring and the results signal when a system wide supply shortage may exist and trigger a defined set of response actions based on the severity of the projected shortage (10%, 20%, etc.).
There are several other indicators that may impact supply during a drought or trigger additional response actions:
➢ Rialto-Colton Basin: Restrictions on groundwater extraction occur when the average standing water levels in three index wells fall below 1002.3 feet; below that level, limitations on pumping are implemented. Additional limitations are placed when the average standing water level falls below 969.7 feet.
➢ Riverside North Basin: Artificial recharge is required to prevent overdraft if the water levels at three index wells fall below 822.04 feet, or if groundwater exports exceed those that occurred in 1963.
➢ San Bernardino Basin (Lytle and Bunker Hill subbasins): If extractions of all San Bernardino County Entities exceed their portion of the safe yield, artificial recharge is required to prevent overdraft.
➢ Other: Governor of California declares a water shortage and/or drought emergency and implements specific mandates that impact water utilities.
3.3 Drought Monitoring Tool and Dashboard
While each of the reporting requirements, management groups and data sources described in this section provide insight to help monitor for and respond to drought, it can be challenging to organize and integrate all the separate elements into a consistent and cohesive approach.
During development of this DCP, the project team identified the need for a single comprehensive drought monitoring tool that brings all the relevant information together in one place to analyze the current and projected water supply, demand, and drought conditions and display the information in a dashboard that would support clear and consistent communication with stakeholders. As a result, a DCP Tool was developed to specifically integrate supply availability, demand projections, drought monitoring, response actions, and mitigation actions, while also structured to align with existing State reporting needs to ensure data consistency.
Going forward, the DCP Tool will serve as the foundation of Rialto’s drought monitoring and response. A preview of the supply dashboard component of the DCP Tool is shown in Figure 3-3.
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Figure 3-3. DCP Tool Supply Dashboard Preview
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4.0 Drought Response Actions
Drought response actions are implemented during a drought to reduce demand and safeguard limited supply. Response
actions are developed and adopted under water supplier’s WSCPs and may vary from utility to utility. The various response actions listed in Rialto , WVWD, FUWC, and Colton’s WSCPs are briefly discussed in this section.
Rialto’s current WSCP was analyzed in further detail and included input from operations staff to develop a model 6 - stage WSCP for future use. This analysis is discussed in this section and the model 6 -stage WSCP is included in Appendix H .
IN THIS S ECTIO N
• Existing Shortage Stages and
Response Actions
• Rialto WSCP Analysis
• Potential Enhancement of
Drought Response Actions
• Education and Engagement Plan
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The latest WSCPs were developed and adopted as part of the 2020 Urban Water Management Plan. DWR has recommended that utilities adopt a standard 6-stage WSCP to maintain consistency throughout the state. Consistent shortage stages help avoid confusion when discussing supply shortages among neighboring customers and aid in mitigating drought impacts. Not all utilities within the region have converted their existing WSCP stages into the standard 6-stage format, aside from FUWC. To help assist with this transition in the future, a model 6-stage WSCP is provided in this section. A summary of the standard 6-stage WSCP recommended by DWR is provided in Table 4-1.
Table 4-1. Standard 6-Stage WSCP
Standard Shortage Stage Water Supply Shortage Condition 1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 Greater than 50%
4.1 Existing Shortage Stages and Response Actions
Each water supplier has its own adopted WSCP and subsequent shortage stages used to mitigate drought impacts. Response actions for each agency reflect their individual supply portfolios and specific water shortage conditions associated with those portfolios. As a result, water shortage conditions and response actions may differ slightly for each utility. A summary of the WSCP shortage stages utilized by each regional supplier is provided in Table 4-2. The various actions identified in the WSCPs for Rialto, WVWD, FUWC, and Colton are summarized in Table 4-3. For the most part, each agency implements the same or very similar response actions; the stage in which each action is implemented may differ. 85 4.0 Drought Response Actions
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Table 4-2. Western San Bernardino Suppliers WSCP Shortage Stages
Normal
Conditions 10% 15% 20% 25% 30% 35% 40% 45% 50% >50%
Rialto Stage 1 Stage 2 Stage
3 Stage 4
WVWD Stage 1 Stage 2 Stage
3 Stage 4
FUWC Stage 1 Stage 2 Stage 3 Stage 4 Stage 5 Stage 6 Colton Stage 1 Stage 2 Stage 3 Stage 4
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Table 4-3. Summary of Existing Actions Implemented by Each Agency Topic Action Rialto WVWD FUWC Colton
CII – Restaurants All restaurants and food establishments are requested not to serve water to their customers unless specifically requested by the customer. Stage 1 Stage 1 Stage 1 Irrigation Require automatic shut-off hoses. Stage 1 Stage 1 Stage 1 Stage 1 Irrigation The use of sprinklers for any type of irrigation during high winds, which divert a significant amount of water away from the intended landscaping, is prohibited. Stage 1 Stage 1 Leaks Customers must fix leaks within a timely manner. Stage 1 Stage 1 Stage 1 Stage 1 Run-Off The use of water that results in run-off is prohibited. Stage 1 Stage 1 Stage 1 Stage 1 Wash Down
Prohibit the use of potable water to clean sidewalks, walkways, driveways, parking areas, patios, porches, verandas, tennis courts, or other paved, concrete, or other hard surface areas, except where necessary for the benefit of public health or safety.
Stage 1 Stage 1 Stage 1
Water Features – Decorative Prohibit the use of potable water to clean, fill, or maintain decorative fountains, lakes, or ponds, unless such water is recycled or part of a recirculating system. Stage 1 Stage 1 Stage 1 Stage 1 Watering Restrictions –
Specific Times Watering Restrictions - Specific Times Stage 1 Stage 1 Stage 2 Stage 1 Irrigation – Medians The irrigation of potable water of ornamental turf on public street medians is prohibited.
The term "median" shall mean the strip of land between street lanes. Stage 1 Stage 1 Stage 3 Irrigation – New Homes and
Buildings
The irrigation with potable water of landscape outside of newly constructed homes and buildings must be consistent with regulations or other requirements established by the California Buildings Standards Commission, as those regulations may be modified from time to time.
Stage 1 Stage 1 Stage 3
Vehicle Washing
Washing of automobiles, boats, trailers, aircraft, and other types of mobile equipment shall be prohibited unless done with a hand-held bucket or hand-held hose equipped with a positive shutoff nozzle for quick rinses. This section does not apply to the washing of the above-listed vehicles or mobile equipment when conducted at a commercial car wash utilizing a recycling system. Provided, however, such washings are exempt from these regulations when the health, safety, and welfare of the public is contingent upon frequent vehicle cleaning, such as garbage trucks and vehicles used to transport food or perishables.
Stage 1 Stage 1 Stage 1
CII – Laundered Linens Operators of hotels and motels must provide guests with the option of choosing not to have towels and linens laundered daily and prominently display notice of this option. Stage 2 Stage 2 CII – Restaurants All restaurants and food establishments are prohibited from serving water to their customers unless specifically requested by the customer. Stage 2 Stage 2 Stage 2 Stage 2 Code Actions in previous stages apply to later stages. Stage 2 Stage 2 Stage 2 Conservation Customers asked to reduce consumption by a specific percentage. Stage 2 Stage 2 Stage 2 Leaks Customers must repair leaks within seventy-two (72) hours of notification. Stage 2 Stage 2 Stage 3 Leaks Customers must repair leaks within twenty-four (24) hours of notification. Stage 4 87 4.0 Drought Response Actions
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Topic Action Rialto WVWD FUWC Colton
Leaks Customers must repair leaks immediately after notification. Stage 5 Irrigation after Measurable
Rainfall
Irrigating turf or ornamental landscapes during or within forty-eight (48) hours following measurable precipitation in excess of one-quarter inch is prohibited. Stage 2 Stage 2 Stage 2 CII – Construction The use of potable water for compaction, dust control, and other types of construction shall be allowed only pursuant to a permit and limited. Stage 3 Stage 2 Stage 4 Stage 2 Watering Restrictions -
Agricultural All agricultural water users shall irrigate only at times approved by the District. Stage 2 Stage 2 Stage 3 Watering Restrictions –
Specific Days
All landscape irrigation shall be limited to no more than four (4) days per week for no more than ten (10) minutes per station per day. Stage 2 Stage 2 Stage 3 New Services
New water services shall be installed but water shall be used before occupancy for essential construction only and for testing of landscape irrigation systems. The installation of new landscaping for all new development/projects must be approved by the Agency.
Stage 3 Stage 2 Stage 5 Stage 3
Vehicle Washing
Washing of automobiles, boats, trailers, aircraft, and other types of mobile equipment is prohibited. Washing of the above-listed vehicles or mobile equipment shall only be allowed at a commercial car wash utilizing recycling systems. Provided, however, such washings are exempt from these regulations when health, safety, and welfare of the public is contingent upon frequent vehicle cleaning, such as garbage trucks and vehicles used to transport food or perishables.
Stage 3 Stage 3 Stage 3
Water Features – Swimming
Pools Swimming pools, hot tubs, and spas shall not be filled or refilled after being drained. Stage 3 Stage 3 Stage 3 Watering Restrictions –
Specific Days
All landscape irrigation shall be limited to no more than three (3) days per week for no more than ten (10) minutes per station per day. Stage 3 Stage 3 Stage 2 Stage 3 Watering Restrictions –
Specific Days
All landscape irrigation shall be limited to no more than two (2) days per week for no more than ten (10) minutes per station per day. Stage 3 Stage 3 Watering Restrictions –
Specific Days
All landscape irrigation shall be limited to no more than one (1) day per week for no more than ten (10) minutes per station per day. Stage 3 Stage 4 Water Features – Swimming
Pools
The filling, refilling, or adding of water to uncovered swimming or wading pools and spas shall be prohibited at all times. Stage 4
Water Features – Decorative The operation of any ornamental fountain or similar structure shall be prohibited. Stage 4 Irrigation Prohibit landscape irrigation. Stage 4 Stage 4 Stage 5 Stage 4 CII – Construction No potable water for construction purposes. Stage 4 Stage 4 Stage 4 CII – Nurseries Commercial nurseries shall water only between the hours of 11:00 p.m. and 6:00 a.m. and only with hand-held devices or with drip irrigation systems. Stage 4 Stage 4 New Services The issuance of new water service connections and meters shall be prohibited / Moratorium or Net Zero Demand increase on new connections Stage 5 Stage 4 88 4.0 Drought Response Actions
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4.2 Rialto WSCP Analysis
At the Drought Task Force kickoff meeting, there was a
consensus that a coordinated regional response to drought is beneficial. As such, Drought Task Force Workshops #2 and #3 focused on Rialto staff to conduct an in-depth
analysis of Rialto’s existing WSCP. The goal of
Workshops #2 and #3 was to develop a draft model
framework that the broader Task Force or other regional agencies may consider aligning with future updates of their own agency WSCPs to increase consistency of drought
response and communication among the City’s water
suppliers. This draft model WSCP can be used by any
agency in the region and/or modified as needed to fit each agency’s individual needs. The goal is to provide regional agencies with a framework for adopting the 6-standard
shortage stages recommended by DWR, while aiming for
regional consistency in drought response.
At Drought Task Force Workshops #2 and #3, Rialto staff participated in a two-hour workshop to discuss appropriate and effective response actions Rialto could implement in a water shortage emergency. Rialto staff considered the
following questions based on their experience during prior droughts:
• Are response actions granular and flexible enough
to respond in an appropriate way?
• Are there any unintended consequences of these
actions?
• Which actions are most or least effective?
• Are any actions difficult/impossible for staff to implement/enforce? The draft 6-stage WSCP created based on discussions from these workshops is provided in Appendix H. This draft 6-stage WSCP includes revisions to existing actions, reorganizing certain actions into different stages, and the removal of specific actions that are not required or are vague. This draft 6-stage WSCP will be used in a future WSCP update (anticipated in 2026 as part of the next IRUWMP update cycle) for Rialto and may also be used by regional agencies to assist with future updates of their respective WSCPs.
After development of the draft 6-stage WSCP, the SWRCB published draft regulations to achieve water use efficiency throughout the state of California, as discussed in Section 2.3.3.
Based on the preliminary UWUO estimate for Rialto, Rialto may need to reduce base demand by 19% for compliance by 2035. As a result, the model 6-stage WSCP developed early in the Recommendations for
WSCP Enhancement
Opportunities for improvement within the
Rialto’s WSCP include:
• Communication & Outreach: Better
engage City residents on current shortage
stages and restrictions.
• Rebates: Better inform City residents of
available rebates to reduce water use.
Visit
https://www.yourrialto.com/594/Utility-
Rebates for details.
• Flexibility: Incorporate language that
provides the City Manager or their
designee flexibility to respond to and
comply with executive orders and state
mandates.
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DCP development may need to be refined to incorporate more aggressive actions in order to achieve further demand reduction beyond the UWUO.
4.2.1 Potential Enhancement of Drought Response Actions Opportunities for improvement within the Rialto’s WSCP include efforts pertaining to communication and outreach, rebates, and structuring actions to provide greater flexibility for implementation.
Communication & Outreach: Improve communication and outreach efforts during water shortages. Develop a targeted approach to better engage with customers and other local agencies.
Rebates: Encourage the use of rebate programs offered by Rialto, such as rebates pertaining to high efficiency toilets, high efficiency washing machines, weather based smart irrigation timers, high efficiency nozzles, automatic shut off nozzles, and turf replacement programs.
Include rebate advertisement when asking customers to reduce water use by a specific percentage.
Flexibility: Incorporate language in response actions/resolutions/ordinances, that the City Manager or their designee may invoke certain response actions to comply with any executive orders and state mandates to remain in compliance. This recommendation is based on executive order and state mandate requiring water suppliers to implement a 20% water supply shortage emergency and all actions identified in the supplier’s WSCP for a 20% shortage. Such actions might have been listed in a supplier’s stage 3. Rather than implement a stage 3 shortage when a Stage 3 is not necessary, WSCPs should be structured to allow for a lower stage declaration but include implementation of specific actions identified for later stages only to comply with mandates from the government.
4.2.2 Education and Engagement Plan
Based on the discussions completed as part of Workshop #2, it was clear that Rialto could benefit from a detailed Education and Engagement Plan. Workshop #4 was conducted with Rialto staff members to identify key communication topics and strategies to better engage customers. As a result, the Rialto Education and Engagement Plan was developed as part of this DCP and is provided in Appendix C.
The Education and Engagement Plan aims to effectively engage and inform the community about Rialto’s DCP, focusing on the six stages of water shortage and associated drought response actions. The goal is to promote water conservation, raise awareness about the severity of the drought, and guide residents through the necessary measures to mitigate its impact. The Education and Engagement Plan is organized into seven key components:
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Stage Overview
Provides an overview of each of the six stages of the WSCP, highlighting the need to engage residents to support them in achieving the necessary demand reductions.
Communication Channels
Identifies a broad range of diverse communication channels to reach a broad audience, including traditional mediums such as local newspapers, radio, and television, as well as modern platforms like social media, email newsletters, and the agency's website. Assesses the effectiveness and level of effort associated with each and recommends appropriate use of each channel.
Tiered Message Approach
Provides example language that can be used when communicating about each stage of drought, including updating the community on the current stage, providing practical tips for water conservation, and emphasizing the collective impact of individual efforts. The urgency of the communication increases with each stage.
Educational Materials
Provides recommendations for effective educational materials, including giveaways (branded water bottles, etc.), brochures, flyers, and infographics, explaining the drought contingency plan and illustrating water-saving tips. Materials should be distributed widely within the community, emphasizing the importance of individual and collective efforts in water conservation.
Community Engagement Program
Identifies a broad range of community engagement opportunities, such as informative workshops and community meetings, water-saving competitions, educational events, and outreach campaigns. These initiatives will foster a sense of collective responsibility and encourage residents to actively participate in water conservation efforts.
Responsive Feedback Mechanism
Identifies potential feedback mechanisms, such as a dedicated hotline or online portal, to address community questions, concerns, and suggestions promptly. This ensures transparency and builds trust by demonstrating the water agency's commitment to keeping the community informed and involved.
Partnerships with Stakeholders
Recommends building and strengthening partnerships with local community leaders, schools, businesses, and other stakeholders to amplify the outreach efforts. Collaborative initiatives can enhance the reach and effectiveness of communication strategies.
By integrating these components into the Education and Engagement Plan, Rialto can foster a proactive and informed community that plays an active role in mitigating the impact of drought through responsible water use.
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4.3 Regional Coordination
There are many ongoing efforts and committees dedicated to preserving the region’s water supply. Most notably, the Rialto Basin GC Technical Advisory Committee (TAC) is an important and effective platform for regional communication. Members of the Rialto Basin GC TAC are active participants of the Drought Task Force and supported development of this DCP. It is envisioned that the Rialto Basin GC TAC will continue to serve as the platform for coordination between the City’s suppliers after completion of this DCP.
As mentioned above, Drought Task Force participants noted that regional coordination and drought communication are key for responding to drought and building resiliency. Typical forms of communication might not work as well as previously. For example, many agencies have historically provided bill-stuffers to help inform customers of issues. The advantages of modern technology have allowed customers to enroll in autopay and online customer portals; as such, many customers never actually view their own bill. “Out-of-the-box” methods of communication are needed to reach customers and effectively reduce water use. Such methods could include:
• Social media alerts, notices, and advertisements
• Customer account portal messages
• Partnership with local media outlets
• Communication in multiple languages
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5.0 Vulnerability Assessment
A vulnerability assessment was conducted to identify potential risks to water resources within this region. The Drought Task Force participated in a workshop to discuss vulnerabilities and potential impacts on each Drought Task Force member’s organization. The results of the v ulnerability assessment are discussed in this section.
Each water supply source used to serve the City was discussed in detail with the Drought Task Force. Drought vulnerabilities are the main focus of this DCP; however, other vulnerabilities could also impact water supply reliability or exacerbate drought-specific vulnerabilities, particularly if they occur during a drought when supplies are already strained. Therefore, this DCP includes a holistic analysis of vulnerabilities organized into the following categories:
climate change; extended drought; infrastructure; administrative, regulatory and environmental; and water quality.
IN THIS S ECTIO N
• Drought Specific Vulnerabilities
• Other Vulnerabilities
• Vulnerability Assessment
• Vulnerability Assessment
Summary
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5.1 Drought Vulnerabilities
This section provides context for some of the most critical drought related vulnerabilities that impact water supply for the City and were considered in the vulnerability assessment.
Prolonged Drought
The San Bernardino Valley Region continues to face prolonged drought periods that stress water supplies. Rialto and other local agencies utilize the same groundwater basins, and they rely on these basins more heavily when drought reduces the amount of water available from surface water and imported water sources.
Rialto and other local agencies all pump from the San Bernardino Basin, which has a substantial storage capacity of 5,690,000 AF. The San Bernardino Basin is adjudicated and the combined extractions from all pumpers have been well below the safe yield since 2012, but the water levels have continued to decline due to long term drought conditions, reaching a new record low in 2022, as shown in Figure 5-1.
Figure 5-1. San Bernardino Basin Historical Capacity, Percent Full While there is still significant water in storage in the San Bernardino Basin, some existing wells are not deep enough to access it, and water levels are lower in some areas of the San Bernardino Basin, as well as the Rialto-Colton Basin. As shown in Figure 5-2, water levels in the western portion of San Bernardino Basin and Rialto-Colton Basin are significantly lower than other areas, as indicated by the red and orange shading. A contributing factor to the lower water is that there are limited opportunities to recharge the western portion of the San Bernardino Basin and Rialto-Colton Basin due to contamination plumes, environmental constraints, and limited availability of land for recharge facilities. Since this is the area where Rialto and other Drought Task Force members have wells, they are more vulnerable to drought and declining water levels than agencies who pump from other parts of the San Bernardino Basin with higher water levels.
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Figure 5-2. San Bernardino Basin Groundwater Levels, 2022 95 5.0 Vulnerability Assessment
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Adjusted Water Rights in the Rialto-Colton Basin
The Rialto-Colton Basin is also adjudicated and one of the basin management requirements is to reduce allowable groundwater extractions to no more than 50% when the average standing water levels in three index wells fall below 1002.3 feet; below that level, limitations on pumping are implemented. Additional limitations are placed when the average standing water level falls below 969.7 feet. Rialto and other users have experienced water allocation reductions within the Rialto-Colton Basin over the past 13 years, as shown in Table 5-1. In 2020, Rialto obtained nearly 30% of its total supply from the Rialto-Colton Basin so reduced supply from this source during drought is a significant concern for Rialto.
Table 5-1. Historic Reductions to Pumping Rights in the Rialto Decree Area Water Year % Reduction in Water Allocation
2009-10 7
2010-11 14
2011-12 19
2012-13 17
2013-14 27
2014-15 32
2015-16 30
2016-17 31
2017-18 38
2018-19 39
2019-20 29
2020-21 29
2021-22 40
2022-23 41
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Water Quality: Pollutants within local groundwater basins impact the reliability of groundwater sources and may cause certain wells to be taken out of service until treatment or blending can be implemented. During droughts when surface water and imported water is less available, Rialto and other Drought Task Force members rely more on groundwater in storage so water quality issues that impact the ability to produce groundwater are also a significant threat.
Known contaminant plumes are shown in Figure 5-3. The Rialto-Colton Plume is located within the City limits and has elevated concentrations of perchlorate. Rialto implements a Perchlorate Contamination Zero Tolerance Policy and has removed wells from service that detect levels of perchlorate. Rialto currently leases its water rights in the Rialto-Colton Basin to the County of San Bernardino (County) for clean-up of this perchlorate plume. Pumping in this area is ongoing and expected to continue indefinitely until cleanup is complete. As a result of the need to maintain continuous extractions from the Rialto-Colton Basin for plume cleanup, reduced pumping within the Rialto-Colton Basin to preserve groundwater levels is not an option, which limits effective drought response strategies for the Rialto-Colton Basin. 97 5.0 Vulnerability Assessment
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Figure 5-3. Groundwater Contaminant Plumes
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The Santa Ana Watershed Project Authority (SAWPA) Basin Monitoring Program Task Force leads monitoring efforts of water quality within the SAR watershed for total dissolved solids (TDS) and nitrate. The ambient water quality (AWQ) of these constituents for each groundwater basin is recalculated every three years to assess compliance with groundwater water quality objectives. The latest AWQ update is currently underway; more information can be found at Basin Monitoring Program Task Force - SAWPA - Santa Ana Watershed Project Authority.
Results from the previous 2018 AWQ update are provided in the 2020 IRUWMP, Part 1, Section
3.9.2. The results show that TDS levels meet drinking water quality requirements for all basins evaluated in this DCP, but there are some areas where Nitrate exceeds drinking water quality requirements and requires treatment. Nitrate concentrations in the Rialto area is shown in Figure 5-4.
In addition to known plumes and areas with higher nitrate, various chemical pollutants have been detected at numerous wells owned by Rialto, WVWD and FUWC and require treatment and/or blending prior to delivery. While many treatment systems already exist, each agency is planning to implement additional groundwater treatment projects that will allow them to restore wells that have been taken offline due to groundwater quality issues. 99 5.0 Vulnerability Assessment
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Figure 5-4. Ambient Water Quality: Nitrate
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Recharge Constraints: Groundwater quality concerns, in combination with limited availability of open land in developed urban areas, constrain opportunities to recharge the underlying groundwater basins with supplemental water. This is a particular challenge in the Rialto-Colton Basin. The Cactus Basin (an existing flood control basin operated by San Bernardino County Flood Control District) has been identified as one of the only potentially viable recharge sites for the Rialto-Colton Basin and facilities to convey imported water to this site are under design.
However, concerns over impacting the Rialto-Colton plume have resulted in implementation challenges for the Cactus Basin Recharge Project, which is critical to raise water levels in the Rialto-Colton Basin.
New Well Limitations in the Bunker Hill subbasin
Based on the presences of the Newmark and Muscoy contamination plume within the Bunker Hill subbasin, local agencies are concerned with the potential movement of this plume and impacts to existing wells. Cleanup of the Newmark and Muscoy plume is underway and governed by a groundwater management zone (GMZ), as shown in Figure 5-5 below; however, despite cleanup efforts, no new wells in this area may be constructed without impacted the Newmark and Muscoy plume. As a result, any new wells within the Bunker Hill subbasin must be constructed further east, which increases the conveyance cost for the western San Bernardino agencies.
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Figure 5-5. Bunker Hill Groundwater Management Zone
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Potential Effects of Climate Change
The 2020 IRUWMP summarized previous climate change assessments pertaining to vulnerabilities for the SAR Watershed, based on the Climate Change Analysis for the Santa Ana River Watershed, completed by USBR in 2013 (US. Department of the Interior Bureau of Reclamation, August 2013). The findings indicated that:
• Uncertainty around the Sacramento-San Joaquin Bay Delta will reduce imported water reliability.
• Existing groundwater capture facilities may not have the capacity or operational ability to capture less frequent, but more intense storm events.
• More frequent drought periods will result in more frequent and intense wildfires. Surface water quality and the ability to capture storm flows will be reduced. • Uncertainty related to managing intense winter storms to protect downstream life and property will make holding water in the flood system for recharge more difficult. • Increased temperatures would result in increased water demand for landscape irrigation. • Decreased runoff and subsurface flows from the mountain front areas as the result of more frequent and severe droughts would reduce natural groundwater recharge.
5.2 Other Vulnerabilities
An additional vulnerability is created by restrictions on the construction of new groundwater wells that could help increase supply and mitigate the effects of a future drought. These limitations impact agencies’ ability to construct new wells throughout the Upper Santa Ana River Watershed; two specific limitations are discussed below. 1924 Lytle Judgment
The 1924 Judgment No. 17,030 from the Superior Court of San Bernardino (1924 Lytle Judgment) outlines water rights and infrastructure used by agencies to obtain Lytle Creek surface water and groundwater from Lytle Creek subbasin. Lytle Creek surface water is conveyed through a power-company owned pressurized pipeline to WVWD’s Roemer WFF and FUWC’s Sandhill Water Treatment Plant (Sandhill WTP). When substantial flows are present, the 1924 Lytle Judgment stipulates that any water that passes the intake shall be used for groundwater replenishment in the Lytle Creek Wash area. The Lytle Creek Wash area north of Highland Avenue shall be saturated prior to replenishment in the southern portion of the Lytle Creek Wash.
Additionally, the 1924 Lytle Judgment prohibits well construction from certain areas within the Lytle Creek subbasin. Specifically, Rialto is prohibited from constructing and using wells south of a line located 0.75 miles north and parallel to Highland Avenue. Additionally, no agencies part of the 1974 Lytle Judgment may construct wells within 500 feet of another well owned and operated by a different agency, except for substituting a new well in lieu of an existing well at the same capacity.
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5.3 Vulnerability Assessment
Rialto and the Drought Task Force participated in a workshop to discuss vulnerabilities to the region’s supply sources. Discussions focused on potential impacts to each supply source, including climate change, infrastructure, regulatory and environmental, and water quality impacts. The input gathered during this workshop is summarized in Table 5-3. After reviewing the various factors that could impact each supply source, each vulnerability identified was given a likelihood and consequence (low, moderate, high) score, also reviewed by the Drought Task Force. Each vulnerability was assigned a likelihood score to identify the possibility or frequency of each vulnerability occurring and impacting the use of that supply source. Impact scores are based on the severity of impact to the water supply portfolio or utility’s ability to operate. A summary of the likelihood and consequence scoring rubric is provided in Table 5-2.
Table 5-2. Likelihood and Impact Scoring Rubric
Likelihood
Low Vulnerability could occur once every 10 years
Moderate Vulnerability could occur at least 3 times every 10 years High Vulnerability could occur at least 5 or more times every 10 years Impact
Low
If the vulnerability were to occur, it would minimally impact the water supply and/or ability to operate. Agencies could absorb impacts within existing operations.
Moderate
If the vulnerability were to occur, it would noticeably impact the water supply and/or ability to operate. Agencies could adapt with existing resources relatively quickly.
High
If the vulnerability were to occur, it would significantly impact the water supply and/or ability to operate. Adaptation could have a significant cost or require substantial time to implement.
Based on the likelihood and impact scores assigned to each vulnerability, a single risk score was determined based on the matrix in Figure 5-6. Vulnerabilities that were assigned high likelihood and high impact scores correspond to a risk score of 1. Vulnerabilities with any combination of high and moderate scores correspond to a risk score of 2. Vulnerabilities with any combination of low and high or moderate scores correspond to a risk score of 3 and 104
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vulnerabilities with both low likelihood and impact scores correspond to a risk score of 4. The risk scores are used to identify the most critical vulnerabilities and assist in prioritization of mitigation actions (discussed in the following chapter).
Impact Low Moderate High
Likelihood
High
Moderate
Low
Figure 5-6. Vulnerability Risk Score Matrix
The specific vulnerabilities identified and the corresponding likelihood, consequence and risk scores are presented in Table 5-3, organized by supply source. 105
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Table 5-3. Vulnerabilities Identified within the Rialto Sub-Region Bunker Hill subbasin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Climate Change
Less frequent and more intense storms may result in reduced natural recharge and reduce capture at existing stormwater recharge facilities. High High
Extended Drought
Subsidence
*More information required to assess likelihood and impact.
Low* Moderate*
Most regional agencies rely heavily on Bunker Hill supply during extended drought periods when other supplies are reduced. Moderate Moderate
Depleted groundwater levels resulting from extended drought can take a long time to recover after recharge water becomes available due to extended groundwater travel time. Moderate Moderate
Low groundwater levels can impact production capacity of existing wells. Low Moderate
Infrastructure
Interruptions to the Baseline Feeder system would limit access to Bunker Hill supply for several agencies. Low High
Administrative,
Regulatory, &
Environmental
EPA regulated cleanup of Newmark and Muscoy plumes has established a management zone and fixed extraction amounts which limits new well construction in this area.
*This vulnerability most impacts WVWD due to proximity to their system.
High Low*
Emerging contaminants and regulations are unknown; could potentially take supplies offline with limited time to adapt supplies to meet new requirements.
*Actual impact depends on specific regulations and will vary by agency and supply portfolio but has the potential to substantially impact existing supplies.
Moderate High*
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Bunker Hill subbasin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score Habitat-related regulatory issues impact the ability to maintain and construct water supply projects. High High
Water Quality
Known water quality issues could drive the need for additional treatment to continue use of existing wells. High Moderate
Newmark and Muscoy plumes present within the Bunker Hill. High Low
Lytle Creek subbasin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Climate Change
Less frequent and more intense storms may result in reduced natural recharge and reduce capture at existing stormwater recharge facilities. High Moderate
Extended Drought
Subsidence
*More information required to assess likelihood and impact.
Low* Moderate*
Limited opportunities for recharge basins because there is limited land available for purchase. High High
Low groundwater levels can impact production capacity of existing wells. Moderate Moderate
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Lytle Creek subbasin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Administrative,
Regulatory, &
Environmental
Emerging contaminants and regulations are unknown; could potentially take supplies offline with limited time to adapt supplies to meet new requirements.
*Actual impact depends on specific regulations and will vary by agency and supply portfolio but has the potential to substantially impact existing supplies.
Moderate High*
Water Quality
Existing wells are impacted by arsenic and MTBE and require treatment. *Impact may be greater for certain agencies and supply portfolio. WVWD is currently impacted by this issue, but other wells in this Basin have not yet exhibited this water quality issue.
High Moderate*
Rialto-Colton Basin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Climate Change
Less frequent and more intense storms may result in reduced natural recharge and reduce capture at existing stormwater recharge facilities. High Moderate
Extended Drought
Subsidence
*More information required to assess likelihood and impact.
Low* Moderate*
Groundwater levels are highly sensitive to rainfall, inflow from Lytle Basin, and pumping patterns. Moderate Moderate
Adjustable portion of water rights may be reduced by up to 50% based on levels at three index wells. *Likelihood is based on the number of years in the last 10 years where water rights are reduced by 25% or more High* High
Limited opportunities for recharge basins because there is limited land available for purchase. High High
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Rialto-Colton Basin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score Low groundwater levels can impact production capacity of existing wells. Moderate Moderate
Administrative,
Regulatory, &
Environmental
Emerging contaminants and regulations are unknown; could potentially take supplies offline with limited time to adapt supplies to meet new requirements.
*Actual impact depends on specific regulations and will vary by agency and supply portfolio but has the potential to substantially impact existing supplies.
Moderate Moderate*
Water Quality
Existing wells are impacted by water quality issues and some wells require treatment to be restored to service. *Impact may be greater for certain agencies and supply portfolio. With current reductions in pumping rights, not all wells are needed, but once groundwater levels are restored, water quality will become the limiting factor and treatment will be needed to fully utilize pumping rights.
High High*
Perchlorate and TCE plume present and is being mitigated through a Four Party Implementation Agreement. High Low
Riverside North Basin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Climate Change
Less frequent and more intense storms may result in reduced natural recharge and reduce capture at existing stormwater recharge facilities. *Actual impact will vary by agency and supply portfolio.
High Moderate*
Extended Drought
Subsidence
*More information required to assess likelihood and impact.
Low* Moderate*
Low groundwater levels can impact production capacity of existing wells. Moderate Moderate
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Riverside North Basin
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Administrative,
Regulatory, &
Environmental
Emerging contaminants and regulations are unknown; could potentially take supplies offline with limited time to adapt supplies to meet new requirements.
*Actual impact depends on specific regulations and will vary by agency and supply portfolio but has the potential to substantially impact existing supplies.
Moderate Moderate*
Water Quality
MTBE contamination plume present and is being mitigated. High Low
Existing wells are impacted by nitrate and perchlorate and require treatment. High Moderate
Lytle Creek Surface Water
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Climate Change
Changing precipitation and snowpack patterns, combined with less frequent and more intense storms, may result in declining long-term average yield. High Moderate
More frequent wildfires may increase sediment and contaminant flows and may degrade surface water quality. *Impact depends on the severity of water quality impairment and ability of treatment processes to accommodate.
Moderate Moderate*
Extended Drought
Reduced surface water supply during dry conditions. High Moderate
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Lytle Creek Surface Water
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Administrative,
Regulatory, &
Environmental
Water supply is dependent on SCE operation of hydroelectric system. Should SCE decide to decommission, or fail to repair/maintain the hydroelectric facilities, agencies would lose access to this supply. Moderate High
Water Quality
During and shortly after storm events, turbidity is high and water is not usable for treatment. High Low
Water can have increased concentrations of bacteria during the summer due to lower flows and more recreational activities, which can increase treatment costs. High Low
Imported Water
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Climate Change
Changing precipitation and snowpack patterns, combined with less frequent and more intense storms, may result in declining long-term average surface water storage. High Moderate
Sea level rise poses a significant challenge to the salt balance in the Bay-Delta and could result in pumping restrictions. High Moderate
Sea level rise increases the vulnerability of the Bay-Delta to seismic events. Low High
Extended Drought
The SWP has been unreliable in dry years; possible to have multiple low to zero allocation years in a row. Moderate Moderate
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Imported Water
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Infrastructure
“The Big One” Earthquake has the potential to completely interrupt imported water supply to the region for an extended period of time. Low High
Administrative,
Regulatory, &
Environmental
Increasingly stringent environmental regulations can impact the quantity of water available for exports. Moderate Moderate
Contractual, environmental, financial, and regulatory constraints have resulted in extended implementation periods for new infrastructure to improve reliability. Moderate Moderate
Water Quality
During drought periods and flooding events, imported water quality is higher in TDS than during normal periods. Moderate Moderate
Additional constituents that could potentially impact water quality include algae toxins, disinfection byproduct precursors, nutrients, and emerging contaminant concerns; these could reduce imported water quantities or require additional treatment. Moderate Moderate
Other / All
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Climate Change
Increases in the number of high temperature days will result in increased outdoor water use. Moderate Moderate
Power supply constraints due to in-region PSPS (public safety power shutoffs) events could cause impacts to certain facilities. High Moderate
Drought induced water level constraints on hydropower generation could impact statewide power supply and could impact local grid reliability, increasing the possibility of power interruptions and/or increasing power costs. Low Moderate
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Other / All
Vulnerability
Category Qualitative Analysis Likelihood Impact Risk Score
Extended Drought
Challenges to effectively communicate drought conditions to water users and achieve necessary water use reductions. *Level of likelihood and impact depends on water supply shortage condition.
Moderate* Moderate*
Infrastructure
Supply/chain material availability is limited; long lead times to procure equipment and supplies. Moderate Moderate
Water infrastructure is aging and risks failure if not replaced in a timely manner. *Level of impact depends on agency capacity to continually fund and replace aging infrastructure.
Moderate Moderate*
The “Big One” Earthquake Low High
Administrative,
Regulatory, &
Environmental
Reduced sales due to water conservation and efficiency regulations reduce agency revenue. High Moderate
Consistent increasing operating costs (labor, power, etc.) combined with infrastructure replacement needs and investments in reliability to maintain the same level of service can potentially impact affordability for water users. High Moderate
Statewide demand reduction mandates create challenges to quickly reduce demands, require additional staff resources, and reduce water sales. High High
Habitat-related regulatory issues impact the ability to maintain and construct water supply projects. High High
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5.4 Vulnerability Assessment Summary
Based on the risk scores calculated for each individual vulnerability, seven were identified as priority 1. These highest-risk vulnerabilities are listed below.
5.4.1 Priority 1 Vulnerabilities
Rialto-Colton Basin
➢ Adjustable portion of water rights may be reduced by up to 50% based on levels at three index wells.
➢ Limited opportunities for recharge basins because there is limited land available for purchase.
➢ Existing wells are impacted by water quality issues, and some wells require treatment to restore service. The impact of this vulnerability might be greater for certain agencies and is dependent on each agency’s total supply portfolio. With current reductions in pumping rights, not all wells are needed; once groundwater levels are restored, water quality will become the limiting factor and treatment will be required to utilize full groundwater rights.
Lytle Creek subbasin
➢ Limited opportunities for recharge basins because there is limited land available for purchase.
Bunker Hill subbasin
➢ Less frequent and more intense storms may result in reduced natural recharge and reduce capture at existing stormwater recharge facilities.
Other
➢ Statewide demand reduction mandates create challenges to quickly reduce demands, require resources, and reduce water sales.
➢ Habitat-related regulatory issues impact the ability to maintain and construct water supply projects.
The highest priority vulnerabilities impact the amount of water available for use. For Rialto, the Rialto-Colton Basin is the most easily accessible water supply source due to existing production facilities; however, Rialto cannot exercise its full water rights within the Rialto-Colton Basin because of chronic low groundwater levels and water quality clean-up efforts. Further reductions in the available water supply from the Rialto-Colton Basin can greatly impact the Rialto’s water supply portfolio. Other members of the Drought Task Force are experiencing similar impacts.
Bunker Hill subbasin is a very important water supply source for Rialto and other regional users.
The San Bernardino Basin is an large groundwater basin with over 4.6 million acre feet of water 114
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in storage. The SBB is a critical regional resource because most suppliers rely on groundwater storage during drought and when supplies from other basins are impacted. As a result, it is critical for the region to protect and increase the resilience of the San Bernardino Basin, in addition to other local water resources.
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6.0 Mitigation Actions
The mitigation actions identified in this DCP were developed based on the vulnerability assessment and existing planned projects that would help Rialto and other local stakeholders protect against drought and increase flexibility and resiliency.
The Drought Task Force also participated in a workshop to brainstorm additional opportunities to mitigate vulnerabilities.
Mitigation actions are prioritized based on the severity of the vulnerability mitigated.
IN THIS S ECTIO N
• Mitigation Action Development
• Prioritized Mitigation Actions
Results
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6.1 Mitigation Action Development
Mitigation actions refer to projects, programs, and strategies that are implemented to address potential risks and impacts from drought and other vulnerabilities to ultimately reduce the need for short term response actions and increase system resiliency. Mitigation actions include infrastructure improvements, operational changes or enhancements, and/or institutional and administrative programs to increase supply resiliency. The mitigation actions developed for this DCP range from high-level ideas to construction of new infrastructure. To further characterize the potential actions and provide more clarity on how and when they would be implemented, each of the identified mitigation actions were then assigned a “type”:
➢ Projects: existing capital improvement project (CIP) that is well defined (such as a well replacement or storage tank project)
➢ Opportunities: High-level concepts that would require additional exploration to assess the feasibility and define an implementation approach (such as a new intertie between agencies)
➢ Ongoing actions: currently occurring actions or programs that are planned to continue (such as ongoing groundwater contamination plume cleanup efforts) To develop a set of mitigation actions for this DCP, the Task Force considered what actions would be most effective to mitigate each of the vulnerabilities identified in the Vulnerability Assessment. The Region consistently coordinates on water management of water resources and in many cases, the Task Force members already have planned projects in their CIPs or in the IRUMWP that will help Rialto and other local stakeholders protect against drought and increase flexibility and resiliency. Those relevant CIP and IRUWMP projects were added to the list of mitigation actions and associated with one or more vulnerabilities they address. The Drought Task Force also brainstormed new ideas for addressing vulnerabilities that aren’t adequately addressed through other projects and added these ideas to the mitigation actions list. The mitigation actions listed in this DCP influence supply quantity, quality, reliability, provide operational flexibility, promote water conservation, and help meet regulatory requirements.
6.1.1 Prioritization
Mitigation actions were assigned a priority score based on the vulnerability mitigated. For example, for actions that mitigate vulnerabilities with a risk score of 1, the corresponding mitigation actions were assigned a priority score of 1. For mitigation actions that addressed multiple vulnerabilities, the highest priority vulnerability addressed score was assigned to the mitigation action. For example, for mitigation action 101 Cactus Recharge Project, the Cactus Recharge Project mitigates a climate change vulnerability (risk score 2) and an extended drought vulnerability (risk score 1). Therefore, mitigation action 101 was assigned a priority 117
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score of 1 based on the highest risk score of the vulnerabilities mitigated (extended drought vulnerability in this example).
6.2 Prioritized Mitigation Actions Results
The mitigation actions were prioritized and organized by type. For each mitigation action, the risk score for the various categories of vulnerability each action helps to mitigate is also identified. Additional details on the mitigation actions are provided in Appendix F, such as project description, proponent, and timing details. The timeframe for implementation is roughly estimated and could potentially be impacted by various factors such as funding availability, regulatory requirements, and partner coordination ability. Figure 6-1 summarizes the mitigation actions included in this DCP by type and priority.
Figure 6-1. Number of Mitigation Actions Identified by Priority
6.2.1 Priority 1 Mitigation Actions
Priority 1 mitigation actions are the projects, opportunities, and ongoing actions that mitigate a vulnerability with a risk score of 1 (high likelihood and high impact vulnerability). Table 6-1 presents a list of all Priority 1 Mitigation Actions. The circled number under the mitigation categories indicates the highest risk score of vulnerabilities in each category that are mitigated by each action. Priority 1 Mitigations actions are numbered with 100 series numbers, beginning with 101.
34 35
40 0
5 10
15 20
25 30
35 40
45 1 2 3
No. of Mitigation Actions
Mitigation Action Priority
Project Opportunity Ongoing Action Total Number of Actions 118
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Table 6-1. Priority 1 Mitigation Actions and Type of Vulnerability Mitigated Vulnerabilities Mitigated
DCP
Project
No.
Project Name Supply
Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
101 Implement the Cactus Basin Recharge Project /
Construct the Cactus Basin Recharge Pipeline
Rialto-Colton
Groundwater
Basin
San Bernardino
Valley Project
102 Implement the recommendations in the Rialto
Groundwater Management Plan (underway)
Rialto-Colton
Groundwater
Basin
Rialto Basin
Groundwater
Council
Project
103 Implement the City of Rialto Education and Engagement Plan Other / All City of Rialto Opportunity
104 Ongoing participation in the Rialto Basin Groundwater Council
Rialto-Colton
Groundwater
Basin
All Ongoing Action
105 Rialto Habitat Nature Center Rialto System Rialto Project 106 Chino Well Rehab and Commissioning of Water
Treatment
Riverside North
Groundwater
Basin
City of Rialto Project
107
Develop agreement and increase capacity of the
Rialto/WVWD intertie for additional access to
imported water supply.
Imported Water City of Rialto &
WVWD Project
108
Rialto/WVWD agreement for Roemer WFF Treatment
capacity/SWP use; could include supplemental supply
for the City of Colton
Imported Water
City of Rialto, City
of Colton, &
WVWD
Opportunity
109
Develop agreement and increase capacity of
WVWD/Colton intertie for additional access to
imported water supply.
Imported Water City of Colton &
WVWD Project
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Vulnerabilities Mitigated
DCP
Project
No.
Project Name Supply
Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
110 Develop agreement and additional Rialto/Colton
intertie for additional access to imported water supply. Imported Water City of Rialto, City
of Colton, &
WVWD
Project
111
River Ranch Development: Install two large basins for
recharge, to be used in dry years. Additional
development in northern portion of basins to be led by
the City and operated by San Bernardino Valley
Lytle Groundwater
Basin
San Bernardino
Valley Project
112 Evaluate opportunities to recharge water in Lytle
Groundwater Basin.
Lytle Groundwater
Basin Project
113
Complete an in-depth study to better characterize
opportunities for the Basin (San Bernardino Basin
Optimization and Sustainability Program).
Bunker Hill
San Bernardino
Valley & Western
Water
Project
114 Program for the Expansion of Recharge Capacity
(PERC) Bunker Hill
San Bernardino
Valley Water
Conservation
District
Project
115 Bunker Hill Conjunctive Use Project Bunker Hill San Bernardino Valley & Others Project
116 Regional Recycled Water Recharge Pipeline Bunker Hill San Bernardino Valley Project
117 Construct IX for NO2 at Well W16.
Rialto-Colton
Groundwater
Basin
WVWD Project
118 Construct IX for NO2 at Well W22A.
Rialto-Colton
Groundwater
Basin
WVWD Project
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Vulnerabilities Mitigated
DCP
Project
No.
Project Name Supply
Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
119 Bunker Hill Basin: Construct Wells W43, W44, W45,
and W46. Bunker Hill WVWD Project
120 Rialto-Colton Basin: Well W54 RT break tank.
Rialto-Colton
Groundwater
Basin
WVWD Project
121 Consider Rialto-Colton Basin Recharge via Injection Wells
Rialto-Colton
Groundwater
Basin
San Bernardino
Valley Opportunity
122 Continued regional strategy focused on recharging
during wet years for use in dry years. Bunker Hill All Ongoing Action 123 Continue to implement the Upper Santa Ana River
Habitat Conservation Plan All San Bernardino
Valley Ongoing Action
124 Sites Reservoir to add additional dry-year storage. Imported Water Sites Project Authority Project
125 Well Rehabilitation and Replacement Other All Project 126 Implement blending or treatment. Other All Project 127 Construct Additional Interconnections Other All Project 128 Seek grant funding for infrastructure projects. Other All Opportunity 129 Review and update existing agreements. Other All Opportunity 130 Develop alternative supply sources. Other All Opportunity 121
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Vulnerabilities Mitigated
DCP
Project
No.
Project Name Supply
Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
131 Continue to advocate for improved imported water
reliability / Delta Conveyance Project. Imported Water
California
Department of
Water Resources
Ongoing Action
132 Develop implementation and enforcement tools to
achieve required demand reduction savings. Other / All All Opportunity 133 Develop and implement regional and local
communication plans. Other / All All Opportunity
134 Future Priority 1 Project – any project that mitigates a Vulnerability with a Risk Score of 1 Other All Project
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DCP Project No. 101 Implement the Cactus Basin Recharge Project / Construct the Cactus Basin Recharge Pipeline:
San Bernardino Valley, along with Rialto and other local water agencies, are working with the San Bernardino County Flood Control District to pursue recharge of imported State Water Project water into the existing Cactus Basins, which overlie the Rialto-Colton basin and are currently used for flood control only. The proposed project includes recharging imported water into Cactus Basins 3/3A and 5 and construction of the Cactus Basins Pipeline, approximately 2,200 feet from the Devil Canyon Azusa Pipeline to Cactus Basins. Recharge is planned to occur only during the dry season when the basins are not needed for flood control.
Due to limited opportunities for recharge within the Rialto-Colton Basin and reduced water right allocations during times of drought, the Cactus Basin Recharge Project is critical to mitigating climate change and extended drought vulnerabilities for the Rialto Colton Basin.
DCP Project No. 102 Implement the recommendations from the Rialto Basin Groundwater Management Plan: The Rialto Basin GC has contracted Stetson Engineers Inc. to develop a groundwater management plan for the Rialto Basin. This plan will help Rialto and other Rialto- Colton Basin users preserve groundwater as an important supply source. Completion of the final Rialto Basin Groundwater Management Plan is expected in Summer 2024.
DCP Project No. 103 Implement the City of Rialto Education and Engagement Plan: Rialto has developed an Education and Engagement Plan as part of the DCP Response Actions Element. Rialto’s Education and Engagement Plan will engage and inform the community about this DCP, the City’s water supplies, and the various response actions associated with Rialto’s WSCP. The Education and Engagement Plan identifies communication channels, including community workshops and meetings, educational materials, engagement programs, and local partnerships to provide a comprehensive, cohesive, and informative drought plan.
Key Takeaways: Priority 1 Mitigation Actions
Based on the vulnerability assessment, the highest priority mitigation actions for Rialto and the Western San Bernardino Region are to:
• Construct groundwater recharge projects, where and when possible, particularly on the west side of the Basin. • Maintain and expand collaboration and communication among agencies for shared water resources. • Construct additional wells for increased supply reliability in the Bunker Hill Basin for use when rights within the Rialto-Colton Basin are reduced and when Rialto-Colton Basin/Lytle Creek Basin wells are impacted by water quality issues. • Construct well-specific treatment, as required to maintain existing supply assets. 123
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DCP Project No. 104 Ongoing Participation in the Rialto Basin Groundwater Council: The Rialto Basin GC oversees activities within the Rialto Basin and is working towards developing a sustainable groundwater management plan. that the founding agencies should continue to actively engage in the Rialto Basin GC to ensure sustainable management of this shared water resource.
DCP Project No. 105 Rialto Habitat Nature Center: The Rialto Habitat Nature Center features many benefits to the community as well as the environment. The Rialto Habitat Nature Center will create and enhance wetland and wildlife habitat, improve habitat for threatened Santa Ana River fish species by managing the temperature of recycled water in the Rialto Channel before entering the Santa Ana River, potentially improve water quality in the Santa Ana River and basins downstream, while also providing an open space for walking, recreation, and education for the community. This project provides critical habitat benefits that support implementation of the Upper Santa Ana River Habitat Conservation Plan, which is required to implement many water supply projects throughout the region. As such, this project also indirectly helps mitigate climate change and extended drought vulnerabilities in the region by supporting other projects that directly mitigate those issues.
DCP Project No. 106 Chino Well Rehab and Commissioning of Water Treatment: Rialto’s existing Chino Well has experienced high levels of perchlorate and nitrates and is no longer in use. DCP Project No. 106 will restore the Chino Well and install the appropriate water treatment to return an existing asset to use for potable supply. Restoration will also provide increased system reliability by increasing well pumping capacity and Rialto’s access to groundwater within the Riverside North Groundwater Basin. This is extremely valuable when water rights within the Rialto-Colton Basin are reduced.
DCP Project No. 107, 108, 109, and 110 Develop Agreements and Increase Intertie Capacities between Agencies: WVWD is expanding its existing Roemer WFF. The Roemer WFF currently treats surface water from Lytle Creek and SWP water. The expanded capacity of the Roemer WFF will allow WVWD to treat additional SWP water when available and WVWD could, at times, produce treated water in excess of its own needs. The additional capacity will allow WVWD and potentially other local partners to shift to SWP when it is available in wet years and thereby reduce local groundwater pumping to increase storage for future droughts.
Rialto owns some of the current capacity of the plant and may have the opportunity to obtain access to additional capacity at Roemer WFF because of this upgrade. The City and WVWD will need to develop and implement an agreement for additional WFF capacity. This opportunity could also include agreements with Colton for supplemental supply from the Roemer WFF, if desired.
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WVWD, Rialto, and Colton have existing interties between their systems. Expanding existing interties would provide additional flexibility and may enable WVWD, Rialto, and Colton to access larger quantities of imported water when desired, relax wells, and help stabilize groundwater levels, especially in times of drought when local groundwater basins are declining. Rialto and WVWD have an existing 800 gallons per minute (gpm) intertie located at Cedar Reservoir. The preferred capacity of upgraded interties is approximately 2,000 gpm and could also be located at the existing Cedar Reservoir facility. Rialto may also consider delivering supplemental imported water to Colton through its distribution system. WVWD, Rialto, and Colton’s systems should be hydraulically analyzed to confirm whether any additional system upgrades are needed to provide additional capacity (such as additional pipelines from Roemer WFF or upgraded existing mains).
DCP Project No. 111 River Ranch Development Recharge: San Bernardino Valley, WVWD, and Rialto are considering a partnership with the developer of the River Ranch Development located in the northern portion of Rialto, adjacent to Lytle Creek. The River Ranch Development is proposing construction of three storm drain basins, some of which could be used for SWP recharge during dry period to improve water levels in the underlying Lytle Creek subbasin.
DCP Project No. 112 Evaluate opportunities to recharge Lytle Creek subbasin: Recharge opportunities within the Lytle Creek subbasin are limited as most of the available land has already been developed or will be soon, and there are environmental constraints that limit recharge opportunities in the creek bed. Local agencies should work together to evaluate opportunities and implement projects to recharge water to increase the reliability of Lytle Creek subbasin, if determined to be feasible.
DCP Project No. 113 San Bernardino Basin Optimization and Sustainability Program: The San Bernardino Basin Optimization and Stewardship Program (SBBOSP) is a regional collaborative effort to optimize the San Bernardino Basin (including Bunker Hill). Twenty-four local water agencies have been invited to participate, including Rialto and other DCP Task Force participants. The SBBOSP is being developed in three phases. Phase 1 is currently underway and will define the framework for the SBBOSP. The framework includes developing a background document that summarizes key water management issues for the San Bernardino Basin, setting goals for the program, defining studies and other activities that are needed to achieve the goals and desired outcomes (Program Elements), and a plan for Phase 2 in which the Program Elements will be developed. Phase 3 will follow with implementation of the projects and strategies that are developed as part of Phase 2. This SBBOSP is an integral project that will enhance the long-term collaboration among all San Bernardino Basin stakeholders to further support long-term regional supply resiliency.
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DCP Project No. 114 Program for the Expansion of Recharge Capacity (PERC): The PERC program, led by SBVWCD, includes construction of multiple recharge basins throughout the Region, providing greater supply resiliency by replenishing and stabilizing groundwater levels.
The PERC projects are currently undergoing detailed feasibility studies, which will identify the highest priority basins to move into implementation.
DCP Project No. 115 Bunker Hill Conjunctive Use Project: San Bernardino Valley and other regional partners are developing the Bunker Hill Conjunctive Use Project to increase the yield of the Bunker Hill subbasin by storing water in wet years for extraction in dry years. Conceptual design has been completed and environmental documentation and agreements are currently in development. The final design of the project is expected to be completed in 2024. The total estimated cost of the project is $14,200,000 dollars (San Bernardino Valley, 2023).
DCP Project No. 116 Regional Recycled Water Recharge Pipeline: The Regional Recycled Water Recharge Pipeline will convey recycled water from East Valley Water District’s Sterling Natural Recharge Center to Weaver Basins and recharge the Bunker Hill Basin. This mitigation action will further increase supply resiliency by recharging the Bunker Hill Basin.
DCP Project No. 117, 118, 119, 120 WVWD Well Construction and Water Treatment Projects: WVWD has identified several specific well construction and water treatment projects needed to increase their reliability and maintain existing assets. Ion exchange (IX) is needed to treat nitrate at wells within the Rialto-Colton Basin. However, when groundwater levels within the Rialto-Colton Basin are reduced and pumping restrictions are enacted, other water resources are required. To mitigate impacts of reduced access to Rialto-Colton Basin groundwater, WVWD is also planning to construct additional wells within the Bunker Hill subbasin for use during extended drought periods.
DCP Project No. 123 Continue to Implement the Upper Santa Ana River Habitat Conservation Plan: The Upper Santa Ana River Habitat Conservation Plan (River HCP) addresses the potential effects of local water management agency activities on the sensitive species and habitats in the watershed for purposes of acquiring an incidental take permit (ITP) under Section 10 of the Federal Endangered Species Act (FESA). The River HCP also provides the necessary elements to support permitting under applicable California Endangered Species Act (CESA) and outlines coordination efforts with the California Department of Fish and Wildlife. The River HCP provides a strategy for protecting, enhancing, and restoring the habitat for species and streamlines the permitting process for water resource projects in the region.
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DCP Project No. 124 Sites Reservoir to add Additional Dry Year Storage: San Bernardino Valley advocates on behalf of regional agencies for increased imported water reliability and actively engages in state-wide water resources management. Construction of Sites Reservoir in the Sacramento Valley will provide increased water supply flexibility, reliability, and resiliency in dry years. Sites Reservoir will also provide operational flexibility of the State Water Project and Central Valley Project that convey water to all parts of the State.
DCP Project No. 125 Well Rehabilitation and Replacement: General well rehabilitation and replacement should continue to be a priority for Rialto and Drought Task Force members to maintain existing assets and meet water quality requirements and/or construct new wells to provide system resiliency during drought. Proactive well rehabilitation and replacement will reduce the risk of infrastructure failure and the need to implement the WSCP.
DCP Project No. 128 Seek Grant Funding for Infrastructure Projects: Rialto and the Drought Task Force should continue to pursue grant funding to assist in developing and implementing the mitigation actions identified in this DCP and reduce financial impacts to their ratepayers.
DCP Project No. 132 Develop Implementation and Enforcement Tools to Achieve Required Demand Reduction Savings: Rialto and the Drought Task Force may consider developing implementation and enforcement tools to help reduce demands, track demand reduction, and compile required state reporting on demand reduction activities and effectiveness. Rialto may consider referring to their UWUO Roadmap to identify the required compliance steps and timing needs to inform demand reduction programs and reporting compliance. The UWUO Roadmap is provided under DCP Project No. 132 in Appendix G.
DCP Project No. 133 Develop and Implement Regional and Local Communication Plans:
The Drought Task Force may consider adopting or using the Rialto’s Education and Engagement Plan to inform their own outreach efforts to coordinate drought response for all residents within the City and the region. Consistent messaging across water service areas may more effectively reduce customer demand and conserve water.
DCP Project No. 134 Future Priority 1 Projects: As the DCP is re-evaluated and future updates are made, Rialto and other Drought Task Force participants may identify new ideas and projects that mitigate high-risk vulnerabilities and add them as Priority 1 Projects.
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6.2.2 Priority 2 Mitigation Actions
Priority 2 mitigation actions are the projects, opportunities, and ongoing actions that mitigate a vulnerability with a risk score of 2. Table 6-2 presents a list of all Priority 2 Mitigation Actions.
The circled number under the mitigation categories indicates the highest risk score of vulnerabilities in each category that are mitigated by each action. Priority 2 Mitigations actions are numbered with 200 series numbers, beginning with 201.
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Table 6-2. Priority 2 Mitigation Actions and Type of Vulnerability Mitigated Vulnerabilities Mitigated
DCP
Project
No.
Project Name Supply Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
201 Advanced Meter Infrastructure (AMI) Rialto System Rialto Project 202 Install Rialto Well 3A with arsenic treatment to replace Rialto Well 3.
Lytle Groundwater
Basin Rialto Project
203 Additional regional distribution facilities to convey water to agencies located throughout the region. Bunker Hill San Bernardino Valley Opportunity
204 Coordinate efforts with land developers to implement small-scale recharge.
Lytle Groundwater
Basin Opportunity
205 Unline canals in strategic areas to provide recharge opportunities.
Lytle Creek
Surface Water Opportunity
206 Basin Management / Coordinate with Management of
the San Bernardino Basin
Riverside North
Groundwater Basin All Basin Users Ongoing Action
207 Equip existing wells with treatment systems. Riverside North Groundwater Basin Project
208 Riverside North Aquifer Storage & Recovery Project Riverside North Groundwater Basin
San Bernardino
Valley Project
209 Central Feeder and EBX Intertie Project Imported Water San Bernardino Valley Project
210 Foothill Pipeline Infrastructure Improvements Imported Water San Bernardino Valley Project
211 Foothill Pipeline Interior Relining Imported Water San Bernardino Valley Project
212 Delta Conveyance Project will improve water quality once implemented. Imported Water Project
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Vulnerabilities Mitigated
DCP
Project
No.
Project Name Supply Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
213 Lytle Creek Watershed Assessment & Restoration Lytle Creek Surface Water
Water Resources
Institute Project
214 Well W8A Arsenic Treatment Lytle Groundwater
Basin WVWD Project
215 Well W36 Arsenic Treatment Lytle Groundwater
Basin WVWD Project
216 Well W34B Arsenic Treatment Lytle Groundwater
Basin WVWD Project
217 Well W35C Arsenic Treatment Lytle Groundwater
Basin WVWD Project
218 Install IX for NO2 at Well W18A Riverside North
Groundwater Basin WVWD Project
219 Install IX for NO2 at Well W41 Riverside North
Groundwater Basin WVWD Project
220 Install IX for Nitrate and Perchlorate at Well W42 Riverside North Groundwater Basin WVWD Project
221 Install IX for Nitrate and Perchlorate at Well W29A Riverside North Groundwater Basin WVWD Project
222 Install IX for Nitrate and Perchlorate at Well W40 Riverside North Groundwater Basin WVWD Project
223 Install IX for Nitrate and Perchlorate at Well W51 Riverside North Groundwater Basin WVWD Project
224 Install IX for Nitrate and Perchlorate at Well W52 Riverside North Groundwater Basin WVWD Project
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Vulnerabilities Mitigated
DCP
Project
No.
Project Name Supply Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
225 Install IX for Nitrate and Perchlorate at Well W50 Riverside North Groundwater Basin WVWD Project
226 Equip and install treatment at W39 Chino Basin WVWD Project 227 Implement larger-scale stormwater capture and
recharge projects when possible. Imported Water Opportunity 228 Waterman Turnout and Hydroelectric Plant Other Project 229
Identify current water system infrastructure, establish a rehabilitation/replacement schedule, and long-range
financial structure.
Other Project
230 Purchase backup generators and/or battery storage. Other Project 231
Analyze system data to clearly identify highest-risk
areas/areas with redundance needs, etc. Conduct a
consequence of failure prioritization.
Other Project
232 Reservoir Seismic Upgrades Other Project
233 Distribution Pipeline Replacement Other Project
234 Evaluate rate structures. Other Project
235 Future Priority 2 Projects – any project that mitigates a Vulnerability with a Risk score of 2 Other Project
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6.2.3 Priority 3 Mitigation Actions
Priority 3 mitigation actions are the projects, opportunities, and ongoing actions that mitigate a vulnerability with a risk score of 3. Table 6-3 presents a list of all Priority 3 Mitigation Actions.
The circled number under the mitigation categories indicates the highest risk score of vulnerabilities in each category that are mitigated by each action. Priority 3 Mitigations actions are numbered with 300 series numbers, beginning with 301.
6.2.4 Priority 4 Mitigation Actions
The vulnerability assessment did not indicate any vulnerabilities with risk scores of 4 (low likelihood and low impact); therefore, there were no Priority 4 mitigation actions identified.
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Table 6-3. Priority 3 Mitigation Actions and Type of Vulnerability Mitigated Vulnerabilities Mitigated
DCP Project
No. Project Name Supply Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
301 Rialto Landscape Ordinance Update Rialto System Rialto Project 302 Continue monitoring efforts.
Rialto-Colton
Groundwater
Basin
Ongoing Action
303 Continue to implement the Four Party Implementation Agreement. Other Ongoing Action
304
Continue to implement the Cooperative Agreement to
Protect Water Quality and Encourage the Conjunctive
Uses of Imported Water in the Santa Ana River Basin.
Imported Water Ongoing Action
305
Service Line Replacement, Hydrant Laterals, for Palm,
Orange, Olive, and Date Between Foothill to the Train
Tracks (Part 2)
Rialto System Rialto Project
306 Service Line Replacements on South Alice, South Palm, West Godden, and Alu Streets Rialto System Rialto Project 307 Main and service line replacement; Bonnie View
between Acacia and Eucalyptus Rialto System Rialto Project 308 Mainline Valve Replacement Rialto System Rialto Project 309 Cedar Reservoir 2, Overhaul, and Dome Preservation Rialto System Rialto Project 310 4" South Oakdale and South Marcella between East
Rialto Ave and Allen St Rialto System Rialto Project
133
6.0 Mitigation Actions
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 6-19
Vulnerabilities Mitigated
DCP Project
No. Project Name Supply Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
311
Mainline and Service Line, Hydrant Laterals, and
Mainline Replacement Below Etiwanda between Lilac
and Sycamore Streets: Cornell and Victoria
Rialto System Rialto Project
312 Service Line Replacement, Hydrant Lateral for
Woodcrest, Yucca, Miramonte, Arrowhead, and Althea Rialto System Rialto Project 313 WWTP Electrical Upgrades Rialto System Rialto Project 314 Supervisory Control and Data Acquisition (SCADA)
Upgrades to Lift Stations Rialto System Rialto Project
315 Installation of fourth Disk Filter Rialto System Rialto Project 316 Aged Water Main Replacement Etiwanda from
Riverside to Eucalyptus (Pavement Project) Rialto System Rialto Project 317
Service Line Replacement between Cedar and Larch
below Etiwanda on Streets Victoria, Cornell, Rosewood,
Church, and Folk
Rialto System Rialto Project
318
Service Line Replacement, Hydrant Laterals for Palm,
Orange, Olive, Date Between Foothill to Train Tracks
(Part 1)
Rialto System Rialto Project
319 Backup Generators for Cactus, Lilac, and Ayala Lift Stations Rialto System Rialto Project
320 Pressure Relief Valves (PRVs) Zone 2 to Zone 3 Rialto System Rialto Project 321
Service Line Replacement, Hydrant Laterals, and
Mainline Replacement of Jackson between Sycamore
to Pepper including Mulberry, Chestnut, Mesa, Birch,
and Jackson
Rialto System Rialto Project
134
6.0 Mitigation Actions
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 6-20
Vulnerabilities Mitigated
DCP Project
No. Project Name Supply Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
322 Well W7 Rehab and Retest Lytle Groundwater
Basin WVWD Project
323 16 MGD Expansion of the WTP Imported Water WVWD Project 324 Zone 8 Reservoir Replacement WVWD System WVWD Project 325 Lord Ranch Aeration Tank WVWD System WVWD Project
326 Bunker Hill Aeration Tank WVWD System WVWD Project
327 Lord Ranch Pump Station WVWD System WVWD Project
328 New Zone 7 Pump Station WVWD System WVWD Project
329 New Bunker Hill Supply Pump Station Bunker Hill WVWD Project 330 Property Acquisition for Reservoir R3-4 (1.5 acres) WVWD System WVWD Project 331 Property Acquisition for Reservoir R6-6 (1.5 acres) WVWD System WVWD Project 332 Property Acquisition for Bunker Hill Supply Bunker Hill WVWD Project 332 Property Acquisition for Bunker Hill Supply Bunker Hill WVWD Project 333 R7-5 Reservoir Site Investigation WVWD System WVWD Project 334 Drill/redrill deeper wells and/or reduce pumping. Other Project 335 Consider a study to better characterize subsidence.
Rialto-Colton
Groundwater
Basin
Project
135
6.0 Mitigation Actions
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 6-21
Vulnerabilities Mitigated
DCP Project
No. Project Name Supply Source Proponent Mitigation
Action Type
Climate Change
Extended
Drought
Infrastructure
Administrative,
Regulatory, &
Environmental
Water Quality
336 Consider a study to better characterize subsidence. Bunker Hill Project 337 City of San Bernardino Tertiary Treatment System Bunker Hill San Bernardino
Municipal Water
Department
Project
338 Consider a study to better characterize subsidence.
Lytle Creek
Groundwater
Basin
Project
339 Consider a study to better characterize subsidence.
Riverside North
Groundwater
Basin
Project
340 Future Priority 3 Project – any project that mitigates a Vulnerability with a Risk Score of 3 Other / All All Project
136
7.0 Operational and Administrative Framework
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 7-1
7.0 Operational and Administrative
Framework
The operational and administrative framework (framework) identifies the roles, responsibilities, and related processes to implement and update the DCP . The framework specifically addresses implementation for the drought monitoring processes, response actions and mitigation actions.
IN THIS S ECTIO N
• Drought Task Force Roles and
Responsibilities
• Drought Contingency Plan
Update
• Operational & Administrative
Framework Summary
137
7.0 Operational and Administrative Framework
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 7-2
7.1 Drought Response Task Force Roles and
Responsibilities
The City is responsible for updating this DCP. The Drought Task Force for this DCP is composed of representatives of local water purveyors that consistently meet through other regional collaboration forums, most notably, the Rialto Basin GC. At the completion of this DCP, ongoing conversations regarding drought monitoring and response, mitigation actions, and further collaboration will continue within the Rialto Basin GCand the BTAC. As the City completes updates of the DCP, the Drought Task Force may be asked to provide input through the Rialto Basin GC or other regional forums.
7.2 Drought Contingency Plan Update
As mentioned previously, this DCP builds upon existing efforts Rialto and the region have already completed. Since many elements of the DCP are directly linked to the 2020 IRUWMP, the DCP will continue to be updated once the IRUWMP has been updated to ensure consistent planning. Table 7-1 provides a summary of the DCP Update and Operational and Administrative Framework.
138
7.0 Operational and Administrative Framework
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 7-3
Table 7-1. Operational and Administrative Framework Summary DCP
Element
DCP
Chapter
Staff
Assigned Responsibilities Procedures
Drought
Monitoring
Chapter
3 Rialto Staff
Drought
Task Force
BTAC discusses allocation of available SWP supplies.
Evaluate water supply reliability and complete the Annual Water Supply and Demand Assessment (AWSDA). Each Drought Task Force participant completes their own AWSDA.
Compare supplies, demands, and infrastructure limitations that might impact the ability to deliver supplies.
Determine if a shortage stage declaration is needed and to what extent.
Update the drought monitoring process, if needed. Document in WSCP and the DCP.
Note that the latest WSCP will be included as part of the IRUWMP and may be modified as-needed to comply with state requirements.
Vulnerability
Assessment
Chapter
4 City
Utilities
Department
Incorporate any newly identified vulnerabilities into the vulnerability assessment.
Review previously identified vulnerabilities and update the risk score, if needed. Incorporate newly identified vulnerabilities into the vulnerability assessment, if needed. Incorporate input from the Drought Task Force through the Rialto-Colton Groundwater Council and BTAC
Mitigation Actions
Chapter
5 City
Utilities
Department
Specific
Project
Proponent
Implement mitigation actions as needed. As needed, implement mitigation actions. This includes procuring funding, contracting with consultants or contractors, and implementing mitigation actions.
City
Utilities
Department
Update the list of prioritized mitigation actions.
In alignment with the IRUWMP and the San Bernardino Basin Optimization and Sustainability Program efforts, refresh the mitigation actions list at least every 5 years. Add additional mitigation actions where needed and remove mitigation actions already implemented or no longer needed.
Coordinate efforts with San Bernardino Valley and other regional stakeholders through the San Bernardino Basin Optimization and Sustainability Program and follow-on work, such as potential regional master plan and prioritized project list.
Response Actions
Chapter
6 Rialto Staff
Drought
Task Force
Identify response actions.
Each Drought Task Force participant identifies their own response actions.
Based on the Annual Water Supply and Demand Assessment or other immediate need for demand reduction and implementation of the WSCP, identify appropriate response actions and provide recommendation to the Utilities Manager.
Utilities
Manager Identify response actions. Review staff response action recommendations and provide update/recommendations to City Council.
Rialto Staff
Implement response actions.
Each Drought Task Force participant implements their own response actions.
Implement the recommended response actions to reduce customer demand and safeguard supply. 139
7.0 Operational and Administrative Framework
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 7-4
DCP
Element
DCP
Chapter
Staff
Assigned Responsibilities Procedures
Drought
Task Force
City
Utilities
Department
Implement Education and Engagement Plan.
Update the Education and Engagement Plan at a minimum, every five years.
Lead development of additional response actions to comply with UWUO and further reducing demand during a water shortage emergency.
In alignment with the response actions, implement the communication plan to perform customer messaging and reduce demand.
Update Communication Plan, if needed.
Update response actions as part of the 2025 IRUWMP. Current requirements and compliance needs are unknown at this time and expected to be adopted and available prior to the 2025 IRUWMP cycle.
Update the DCP
All
City
Utilities
Department
Update the DCP.
Update supply and demand projections and WSCP every 5 years as part of the IRUWMP effort. The latest IRUWMP can be found at https://www.sbvmwd.com/reports/reports.
Update the mitigation actions as needed through coordination with the Rialto-Colton Groundwater Management Plan, IRUWMP, and San Bernardino Basin Optimization and Sustainability Program.
Integrate DCP updates into the IRUWMP cycle to maintain consistent regional planning documents.
140
8.0 Funding Opportunities
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 8-1
8.0 Funding Opportunities
Multiple funding opportunities were identified to assist Rialto and other Task Force members in identifying opportunities to apply for funding and assist in future implementation of the mitigation actions identified in this DCP . This section provides a summary of potential grant and loan funding programs. Rialto and other Task Force members will evaluate funding programs and each mitigation action eligibility separate from the DCP.
IN THIS S ECTIO N
• Federal Funding Programs
• State Funding Programs
141
8.0 Funding Opportunities
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 8-2
8.1 Federal Funding Programs
There are many federal funding programs that provide grants and cost share assistance for a variety of projects. Below is a summary of federal grants and low interest loan opportunities that are likely to apply to many of the mitigation actions identified in this DCP. This list is not exhaustive of all available federal funding opportunities but provides a starting point for investigating eligible funding opportunities. Funding opportunities will need to be reviewed and considered on a project specific basis to determine eligibility and competitiveness. New funding programs may also be developed in the future that could potentially apply to the projects listed in this DCP.
USBR WaterSMART: Water & Energy
Efficiency Grants
Applies to on-the-ground water
management improvement projects,
including projects that conserve water,
increase the production of hydropower,
mitigate conflict risk in high-risk water areas,
and further increase water supply reliability
in the western United States.
https://www.usbr.gov/watersmart/
USBR WaterSMART: Planning & Project
Design Grants
Project Design Grants apply to site-specific
final design (minimum 60% design level) to
support planning and design for projects
that could be funded by USBR
implementation grants. Note that project
design grants under this program cannot be
used to prepare a feasibility study.
Water Strategy Grants apply to early stage
planning activities, including outreach and
collaboration, technical analyses and
assessments, project scoping activities to
identify and prioritize implementation
projects, and to develop a strategy for water
supply projects, water marketing activities,
water management projects, and/or river
restoration activities.
Drought Contingency Plans and existing
DCP updates are also funded through this
USBR WaterSMART grant program.
https://www.usbr.gov/watersmart/
USBR WaterSMART: Drought Resiliency
Projects
Applies to projects that increase the
reliability of water supplies through
infrastructure improvements, groundwater
recovery, improve water management
through decision support tools, modeling,
and measurement, and the construction of
domestic water supply projects.
https://www.usbr.gov/watersmart/
USBR WaterSMART: Small Scale Water
Efficiency Projects
Entities with water or power delivery
authority can obtain funding to improve
water efficiency through previously identified
planning efforts. Appliable projects include
canal lining/piping, meter and flow
measurement, landscape irrigation
measures, and SCADA and automation.
https://www.usbr.gov/watersmart/
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8.0 Funding Opportunities
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 8-3
USBR WaterSMART: Water Recycling &
Desalination Planning
Funding for planning and pre-construction
activities, including the development of
water recycling and desalination feasibility
studies, to facilitate project development
under the Title XVI Program, the
Desalination Construction Program, and the
Large-Scale Water Recycling Program.
https://www.usbr.gov/watersmart/
USBR WaterSMART: Applied Science
Grants
Funding for the development of tools and
information to support water management
for multiple uses. Eligible projects include
the development of modeling and
forecasting tools, hydrologic data platforms,
and new data sets.
https://www.usbr.gov/watersmart/
USBR WaterSMART: Title XVI WIIN Act
Water Reclamation and Reuse Projects
Funding for the planning, design, and
construction of WIIN Act eligible water
recycling and reuse projects. A Reclamation
approved Title XVI feasibility study is
required prior to pursuing funding through
this program.
https://www.usbr.gov/watersmart/
USBR WaterSMART: Title XVI WIIN Act
Desalination Construction Program
Funding for the planning, design, and
construction of brackish water desalination
projects. A Reclamation approved Title XVI
feasibility study is required prior to pursuing
funding through this program.
https://www.usbr.gov/watersmart/
USBR Small Storage Program
Funding for projects that will increase water
supply reliability, improve operational
flexibility, and enhance climate resiliency of
water and related infrastructure. Eligible
projects must have a completed feasibility
study and provide water storage capacity
between 200 and 30,000 AF.
https://www.usbr.gov/smallstorage/
USBR Water Conservation Field Services
Program
Funding for the development of water
conservation plans, System Optimization
Reviews (SORs), and water management
improvements. Under the water
management and conservation planning
portion of this grant, funding is provided to
develop plans that document data on
current water supply and demand, forecast
future water demands, identify water
conservation goals, and determine
conservation measures. SORs include an
analysis of the entire water delivery system,
service area, and/or watershed to identify
system-wide efficiency and optimization.
The design of water management
improvements includes all necessary
preliminary tasks required to prepare
design, including site specific information,
such as surveying and soil conditions
testing. Water management improvement
projects include canal lining, SCADA and
automation, and distribution meter
installation to reduce losses and conserve
water.
https://www.usbr.gov/waterconservation/
143
8.0 Funding Opportunities
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 8-4
EPA Water Infrastructure Finance &
Innovation Act (WIFIA)
The Water Infrastructure Finance &
Innovation Act (WIFIA) of 2014 established
a federal credit program administered by the
Environmental Protection Agency (EPA) for
eligible water and wastewater projects.
Such projects include planning, preliminary
engineering, design, environmental review,
revenue forecasting, and other pre-
construction activities; construction,
reconstruction, rehabilitation, and
replacement activities; acquisition of real
property or an interest in real property,
environmental mitigation, construction
contingencies, and acquisition of
equipment; and capitalized interest
necessary to meet market requirements,
reasonably required reserve funds, capital
issuance expenses, and other carrying
costs during construction.
https://www.epa.gov/wifia
Community Grants Program – EPA State
and Tribal Assistance Grant (STAG)
Through the annual appropriations process,
Community Project Funding requests are
made by House and Senate
representatives. Community Grants
projects are designated for the planning,
design, and construction of drinking water,
wastewater, and stormwater infrastructure
and for water quality protection. Requests
are funded through various government
funding bills, but the vast majority of
requests are for STAG infrastructure grants.
STAG funding is limited to projects
otherwise eligible for the funding from the
state’s Clean Water or Drinking Water State
Revolving Funds loan program. There is a
minimum 20% cost share requirement for
any portion of a project funded through a
STAG infrastructure grant. Request are
typically due by February/March of each
year.
144
8.0 Funding Opportunities
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | 8-5
8.2 State Funding Programs
Below is a summary of state grants and low interest loan opportunities that are likely to apply to many of the mitigation actions identified in this DCP. This list is not exhaustive of all available state funding opportunities but provides a starting point for investigating eligible funding opportunities. Funding opportunities will need to be reviewed and considered on a project specific basis to determine eligibility and competitiveness. New funding programs may also be developed in the future that could potentially apply to the projects listed in this DCP.
California Infrastructure & Economic
Development Bank (IBank) California
Lending for Infrastructure State
Revolving Fund & Bond Financing
Program
IBank has the broad authority to issue tax-
exempt and taxable revenue bonds, provide
financing to public agencies, provide credit
enhancements, acquire or lease facilities,
and leverage State and Federal funds.
IBank uses a proprietary interest rate
method to ensure borrowers have the best
chance to receive below-market interest
rates.
https://ibank.ca.gov/
California Office of Emergency Services
Hazard Mitigation Grant Program
The Federal Emergency Management
Agency (FEMA) funds plans and projects
that reduce impacts from natural disasters.
These funds are administered through the
California Office of Emergency Services
(Cal OES). Funding is used to support
implementation of mitigation actions that
reduce risk from natural hazards that
threaten life and property. Drought and
extreme weather qualify as natural hazards.
https://www.caloes.ca.gov/office-of-the-
director/operations/recovery-
directorate/hazard-mitigation/hazard-
mitigation-grant-program/
California Office of Emergency Services
Building Resilient Infrastructure and
Communities
The Building Resilient Infrastructure and
Communities (BRIC) funding program
provides funding for hazard mitigation
related to climate change. These funds are
provided by the federal government and
administered through Cal OES.
https://www.caloes.ca.gov/office-of-the-
director/operations/recovery-
directorate/hazard-mitigation/bric/
SWRCB Drinking Water State Revolving
Fund
The Drinking Water State Revolving Fund
(DWSRF) program provides financing
assistance for drinking water projects
required to achieve or maintain compliance
with the Safe Drinking Water Act.
https://www.waterboards.ca.gov/drinking_w
ater/services/funding/SRF.html
145
References
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | REF -1
References
California Department of Water Resources. (2022, June 13). CIMIS Station Reports. Retrieved from California Irrigation Management Information System:
https://cimis.water.ca.gov/WSNReportCriteria.aspx
Geoscience Support Services, Inc. (December 2021). 20-Year Water Quality Projections for Bunker Hill-A, Bunker Hill-B, Lytle, Rialto, Colton, Riverside, and Arlington Groundwater Basins Technical Memorandum. Claremont: San Bernardino Valley Municipal Water District and Western Municipal Water District.
Hall, A., Berg, N., & Reich, K. (2018). Los Angeles Summary Report. California's Fourth Climate Change Assessment. University of California, Los Angeles.
National Drought Mitigation Center. (2022, August 4). U.S. Drought Monitor. Retrieved from Drought Monitor: https://droughtmonitor.unl.edu/
San Bernardino Valley Water Conservation District. (n.d.). San Bernardino Basin Groundwater Council. Retrieved from San Bernardino Valley Water Conservation District:
https://www.sbvwcd.org/groundwater-council
Water Systems Consulting, Inc., & Woodard & Curran. (June 2021). 2020 Upper Santa Ana River Watershed Integrated Regional Urban Water Management Plan. San Bernardino:
San Bernardino Valley Municipal Water District.
146
Drought Task Force Workshop Summaries
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | A
Appendix A Drought Task Force
Workshop Summaries
A
147
DROUGHT TASK FORCE: WS #1 SUMMARY
Rialto Drought Contingency Plan
148
Meeting Overview
The Drought Task Force workshop took place on July 18, 2022 as part of the Rialto Basin Groundwater Council Technical Advisory Committee (RBGC TAC) meeting. The group received an introduction to the Drought Contingency Plan (DCP), including the various components and information on the USBR WaterSMART Drought Response Program. Lastly, a preview of potential content for WS #2 – Drought Monitoring was provided.
Throughout the meeting, various participants provided insight into additional regional resources that can be used to inform this DCP and brainstorm ideas on how the DCP can be used to help further prepare for and respond to drought in the region. Topics included:
Reconsidering the use of the word drought stressing the importance of cont inuous action; Communication barriers such as press releases that aren’t covered by local media outlets; Practical limit for conservation might impact utility’s ability to reduc e demands WS #1 SUMMARY
2149
USBR Program Overview
Rialto DCP
Drought Task Force Role
Preview WS 2 – Drought Monitoring
Workplan & Schedule
Agenda
150
Plan
Area
City of Colton and San Bernardino
Valley Municipal Water District are
also key stakeholders
151
Drought Contingency Planning
• Most Drought Contingency Plans are structured to address these questions:
• How will we recognize the next drought in the early stages? • How will drought affect us?
• How can we protect ourselves from the next drought?
WS #1 SUMMARY
7 1. Introduction
• Purpose, Goals
• Approach
• Historical
Drought
• Agency
Overview
• Supply &
Demand
2. Drought
Monitoring
• Drought Indices
• Shortage
Stages
3. Vulnerability
Assessment
• Risks and
Impacts of
Drought on
critical
resources
• Future
Conditions
• Drive mitigation
actions
4. Mitigation
Actions
• Tool to
prioritize
actions
• List of Actions
5. Response
Actions
• Related to
Shortage
Stages
6. Ops. and
Administrative
Framework
• Roles
• Responsibilities
• Resources
7. Plan Update
Process
• Plan Evaluation
• Future Updates
152
Many Existing Documents and
Resources will inform this DCP
8153
9 Existing Drought Planning and Monitoring Efforts
Drought Contingency Plan Alignment
SUPPLY &
DEMAND
DROUGHT
MONITORING
VULNERABILITY
ASSESSMENT
MITIGATION
ACTIONS
RESPONSE
ACTIONS
2020 IRUWMP
Agency WSCPs
Rialto Basin Groundwater Management Plan
Basin Technical Advisory Committee
San Bernardino Groundwater Council
One Water One Watershed Plan
Local Agency Facility Master Plans
Valley District Demand Management Program
Urban Water Use Objectives
Annual Water Supply and Demand Assessments
Valley District Groundwater Storage Calcs
RAND Water Supply and Demand Analysis (2021 and 2022) 154
10 Existing Drought Planning Efforts
Drought Contingency Plan Alignment
SUPPLY &
DEMAND
DROUGHT
MONITORING
VULNERABILITY
ASSESSMENT
MITIGATION
ACTIONS
RESPONSE
ACTIONS
USBR Climate Change Analysis for the SAR Watershed Rialto 2021 Climate Adaptation Plan
Valley District Climate Adaptation & Resilience Plan AWIA Risk and Resiliency Assessment & Emergency Response Plans Local Hazard Mitigation Plans
MET 2020 IRP & UWMP
155
Element 1 – Supply & Demand
CORE DCP CONTENT
• DCP will use 2020 IRUWMP supply and demand projections, updated as needed
to incorporate changes and integrate with the Rialto Groundwater Management Plan water budget
IDEAS FOR ENHANCEMENT
• Develop a regional supply infographic to clearly convey the regional water resourc
es and facilities and their importance to drought preparedness (to be used in the DCP and as a standalone resource for the region) DCP Elements
11156
Element 2 – Drought Monitoring
CORE DCP CONTENT
• Describe all ongoing efforts to monitor drought in the region – groundwate r level, groundwater in storage, precipitation trends, BTAC, Rialto Basin and SBB councils, Annual Supply and Demand Assessments, outside resources (Drought Monitor, etc.)
IDEAS FOR ENHANCEMENT
• Is there more that the region can do?
DCP Elements
12157
Element 3 – Vulnerability Assessment
DCP Elements
13 CORE DCP CONTENT
• Compile and review relevant vulnerabilities identified in previous work
IDEAS FOR ENHANCEMENT
• Develop a common framework to identify and evaluate vulnerabilities that can be applied in future planning documents (i.e. 2025 IRUWMP) for more consistent regional assessments and mitigation project justification • Collaborate to evaluate specific vulnerabilities that impact supply reliability for the Rialto area (infrastructure, water quality, water levels, etc.) 158
Element 4 – Mitigation Actions
DCP Elements
14 CORE DCP CONTENT
• Compile and relevant projects listed in existing planning documents
IDEAS FOR ENHANCEMENT
• Link each exisitng project to the specific vulnerability that it helps mitigate • Collaborate to develop additional projects that can benefit the participants/region and mitigate the identified vulnerabilities
ADDITIONAL KEY POINTS NOTED
• Potential Project: update the existing groundwater model to include recent data (current model calibrated up to 2016)
• Potential Project: additional recharge in the Lytle Basin 159
Element 5 – Response Actions
DCP Elements
15 CORE DCP CONTENT
• Compile and summarize drought response actions identified in individual agency Water Shortage Contingency Plans
IDEAS FOR ENHANCEMENT
• Collaborate to develop a “model WSCP” template that could be adopted by any agency in the region to provide a more consistent drought response across the region. Use the opportunity to transition to the DWR 6 standard WSCP stages. • Improve regional drought communication coordination?
ADDITIONAL KEY POINTS NOTED
• Regional coordination and drought communication is key. Additional “out-of-the-box” methods of communicating may be required to reach customers and effectively reduce water use.
160
WHAT
BENEFITS WILL
THE DCP
PROVIDE?
16 Comprehensive evaluation of water
suppl
y vulnerabilities
Opportunity to collaborate to identify
new projects that benefit multiple
agencies
Database of actions and projects that
mitigate identified vulnerabilities and
help position agencies for grant funding
opportunities
Opportunity to promote consistent actions
and messaging on drought and response
actions
161
Drought Task Force
17162
Role & Ideal Participants
• Target more technical content to discuss issues in
dep
th and develop new solutions among familiar
collaborators
• Opportunity to provide input on each element of the
DCP
• DCP process to include 5 Workshops, estimating 2-3
hours each over the next year, with minimal prep-and
post-material review.
Drought Task Force
18 DROUGHT
MONITORING
& RESPONSE
VULNERABILITY
ASSESSMENT &
MITIGATION
ACTIONS
MITIGATION
ACTIONS #2
DRAFT DCP
REVIEW
TASK FORCE
KICKOFF
Ideal List of Drought Task Force Members:
• Fontana Water Company
• West Valley Water District
• San Bernardino Valley Municipal Water
District
• City of Colton
• City of Rialto Staff
• Utilities Manager
• Utilities Support
• Customer Service
• City Clerk’s Office
• Rialto Water Services/Veolia
163
Drought Monitoring &
Response
WS #2 Preview
19164
WSCP Standardized Stages
Drought Monitoring
20 • Last UWMP cycle: update WSCPs to the DWR six standard stages (shown here) or “crosswalk”
• Many local retail agencies “crosswalked”
DWR Standard Shortage Stage Water Supply Shortage Conditions 1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 >50%
165
Crosswalk Example
Drought Monitoring
21 Source: City of Rialto WSCP , Figure 2 166
Local WSCP Stages
Drought Monitoring
22 Normal
Conditions 10% 15% 20% 25% 30% 35% 40% 45% 50% >50%
Rialto Stage 1 Stage 2 Stage 3 Stage 4
West Valley Stage 1 Stage 2 Stage 3 Stage 4
Fontana Stage 1 Stage 2 Stage 3 Stage 4 Stage 5 Stage 6 Colton Stage 1 Stage 2 Stage 3 Stage 4
Fontana Water Company has updated its WSCP to the standard 6 stage framework. 167
Comparison Among Neighbors
Drought Monitoring
23 • Generally, response actions are the same, but the stage in which they are implemented can differ
Action Rialto West Valley Fontana Colton
Limit landscape irrigation to three
days per week. Stage 3,
30%
Stage 3,
30%
Stage 2,
25%
Stage 3, 30%; Based on
address: even water on
even days, odd water on
odd days
Filling or re-filling of pools, spas,
fountains is prohibited.
Stage 3,
30%
Stage 3,
30%
Stage 4,
40%+ Stage 4, 30%+
Restaurants may only serve water
upon request.
Stage 2,
25%
Stage 2,
25%
Stage 2,
25% Stage 2, 20%
Permanent water conservation
measures in place? Yes Yes Yes Yes
FWC WSCP has been updated;
new actions may be different
168
Potential Workshop Activity and Outcome
WORKSHOP ACTIVITY
• Review and compare existing response actions for the Task Force members • Are response actions granular and flexible enough to respond in an appropriate way? • Are there any unintended consequences of these actions? • Which actions are most/least effective?
• Are any actions difficult/impossible for staff to implement/enforce? • Review and refine potential 6-sta ge Retail WSCP model framework
WORKSHOP OUTCOME
Draft 6-Stage Retail WSCP model framework for optional adoption by retail agencies
Drought Monitoring
24169
Workplan & Schedule
25170
26 171
NEXT STEPS
15 1.Confirm Drought Task Force
participation with Tom by Friday,
July 22
2.WSC to coordinate with Tom to
schedule WS #2
172
Questions?
173
174
DROUGHT TASK FORCE WS #2 & #3 SUMMARY
Drought Monitoring & Response
Rialto Drought Contingency Plan
175
Meeting Overview
WS #2 took place on September 15, 2022, at the City of Rialto. This workshop focused on an in-depth analysis of the City’s existing drought monitoring efforts and water shortage response. City operations staff attended this workshop.
Discussions at this workshop were continued in WS #3, conducted on October 25, 2022, and focused on City water shortage response actions.
Staff identified several opportunities to improve the drought monitoring process (Annual Water Supply and Demand Assessment), reviewed existing shortage response actions, and discussed when specific actions should be implemented, based on the percentage of a supply shortage. Staff identified that a City Communication and Outreach Plan is a valuable tool needed to help effective engagement with residents. As a result, WS #4 will focus on City communication efforts pertaining to drought and incorporated into this DCP.
WS #2 & #3 Summary
2176
Plan Area (5 min)
DCP Elements (5 min)
Drought Monitoring (30 min)
Response Actions (60 min)
Workshops & Schedule (5)
WS #2
Agenda
177
DCP Elements (5 min)
Drought Monitoring (5 min)
Response Actions (105 min)
Next Steps (5 min)
WS #3
Agenda
178
Plan Area
179
Drought Contingency Planning
• How will we recognize the next drought in the early stages? • How will drought affect us and how can we respond?
• How can we protect ourselves from the next drought?
DCP Elements
6 Introduction
• Purpose, Goals
• Approach
• Historical
Drought
• Agency
Overview
• Supply &
Demand
Drought
Monitoring
• Drought Indices
• Shortage
Stages
Vulnerability
Assessment
• Risks and Impacts
of Drought on
critical resources
• Future Conditions
• Drive mitigation
actions
Mitigation
Actions
• Tool to
prioritize
actions
• List of Actions
Response
Actions
• Related to
WSCP
Shortage
Stages and
Response
Actions
Ops. and
Administrative
Framework
• Roles
• Responsibilities
• Resources
Plan Update
Process
• Plan Evaluation
• Future Updates
Most Drought Contingency
Plans are structured to
address these questions:
180
Drought Monitoring
Annual Water Supply and Demand Assessment (AWSDA)
7181
AWSDA Overview
INFO
1 DEMAND SUPPLY ASSESSMENT ACTIONS
2 3 4 5
• Year Covered
• Units
• Supplier
Contact Info
• Latest WSCP
Adoption Date
• Monthly
demand
• Demand by
customer class
or total system
demand
• Monthly supply
by source
• Comparison of
supplies and
demands
• Benefits of
WSCP
implementation
• Actions to
reduce
shortage gap
• Quantification
of impacts on
gap reduction
182
Annual Water Supply and Demand Assessment
• How did the process go?
• How were decisions made?
• Were there any challenges?
• Anything you’d like to do differently next year?
• Were there additional inputs used that weren’t previously identified in the WSCP?
• Is there other information that might be helpful (regional/climate/etc.)? • Input on executive order mandating stage 2 implementation and carrying that through the AWSDA
Drought Monitoring
9183
Demands
AWSDA
10 Demand Estimate Approach:
• Used prior year estimates for coming year
(actual June demand was lower than prior
year)
• Consider using a three-year average
approach for future estimates
Demand Data Sources:
• Based on billing data/customer categories
• Future AMI system will allow for better
projections and more accurate estimate of
current water use
184
Supply
AWSDA
11 Supply Data Sources:
• Rialto Basin – May Decree Letter
• Production logs
• Surface water projection is based on allocation
and depends on available water within Lytle
Creek
• SBB monitored through Groundwater Council
and BTAC (Annual Water Management Plan)
• 2021 was a dry year, 2022 is an
exceptionally dry year. May consider using
actual production values for these years for
future assessments.
• May use groundwater model for future
assessments
185
Assessment
AWSDA
12 186
Planned Water Shortage Response Actions
AWSDA
13 187
SWRCB Resolution No. 2022-0002
Source: Emergency Water Use Regs_Wasteful Water Uses Prevention Measures_SWRCB Resolution.pdf
PROHIBITED ACTION CURRENTLY IN WSCP STAGE / PERCENT
Limit Runoff: The application of potable water to outdoor landscapes in a manner that causes more than incidental runoff such that water flows onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures
✓ 1 / Permanent Measure
Shut-Off Nozzle: The use of a hose that dispenses 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
✓ 1 / Permanent Measure
Impervious Surfaces: The use of potable water for washing sidewalks, driveways, buildings, structures, patios, parking lots, or other hard surfaced areas, except in cases where health and safety are at risk ✓ 1 / Permanent Measure Street Cleaning and Construction Sites: The use of potable water for street cleaning or construction site preparation purposes, unless no other method can be used or as needed to protect the health and safety of the public
Partial: Street
Cleaning not
Specified
3 / 30%
Decorative Features: The use of potable water for decorative fountains or the filling or topping-off of decorative lakes or ponds, with exceptions for those decorative fountains, lakes, or ponds that use pumps to recirculate water and only require refilling to replace evaporative losses ✓ 3 / 30%
48-hour Rain: The application of water to irrigate turf and ornamental landscapes during and within 48 hours after measurable rainfall of at least one fourth of one inch of rain. In determining whether measurable rainfall of at least fourth of one inch of rain occurred in a given area, enforcement may be based on records of the National Weather Service, the closest CIMIS station to the parcel, or any other reliable source of rainfall data available to the entity undertaking enforcement of this subdivision ✓ 2 / 20%
Street Medians: The use of potable water for irrigation of ornamental turf on public street medians. ✓ 1 / Permanent Measure 188
Overview
AWSDA
15 DEC JAN FEB MAR APR MAY JUN JULY
Regional Supply
and Demand
Assessment
x
Retailer Supply
and Demand
Assessment
Submit SWP
Order (if any) to
Valley District
Valley District considers options to maximize SWP deliveries, notifies retailers of expected deliveries
Valley District calculates GW Change in Storage
DWR Announces and Updates Table A Allocation
Assess Supplies, Demands and other constraints.
Prepare Annual Assessment
BTAC reviews
annual assessment,
recommends
regional shortage
level and response
actions (if needed)
RETAILER SUBMIT
ASDA TO DWR
BY JULY 1
VALLEY DISTRICT
SUBMIT ASDA TO
DWR BY JULY 1
Recommend Retail
WSCP shortage level
and response actions
(if needed)
Update
Assessment as
necessary
Obtain input from Rialto Basin
GC
Rialto Basin
Decree
Reductions
189
Response Actions
Water Shortage Contingency Plan (WSCP)
16190
Shortage Stages
Response Actions
17191
City Current WSCP Shortage Stages
Response Actions
18 Stage % Supply
Shortage Water Supply Condition
1 10 Normal Conditions
2 20 Water Alert Conditions
3 25 Water Warning Conditions
4 30-50+ Water Emergency Conditions
192
Future WSCP Shortage Stages
Response Actions
19 Standard Shortage Stage % Supply Shortage
1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 > 50%
193
Existing WSCP Response
Response Actions
20194
Evaluation
• Are response actions granular and flexible enough to respond in an appropriate way?
• Are there any unintended consequences of these actions? • Which actions are most/least effective?
• Are any actions difficult/impossible for staff to implement/enforce? • Is there more we should be doing?
Response Actions
21195
Irrigation
PERCENT REDUCTION 10% 20% 30% 40% 50% > 50%
Irrigation of new
construction landscape
must be consistent with
California Buildings
Standards Commission
At All Times
New irrigation
services*
Essential
Construction &
Landscape
Irrigation
System Testing
Essential
Construction &
Landscape
Irrigation
System Testing
No New
Irrigation
Services*
Response Actions
22 Note: Actions in one stage apply in later stages.
*Updated based on input
PROHIBITED ACTION CURRENTLY IN WSCP STAGE / PERCENT
Street Cleaning and Construction Sites: The use of potable water for street cleaning or construction site preparation purposes, unless no other method can be used or as needed to protect the health and safety of the public
Partial: Street Cleaning not
Specified 3 / 30%
196
Irrigation
PERCENT REDUCTION 10% 20% 30% 40% 50% > 50%
Specific Days* 4 Days/Week 3 Days/Week* 2 Days/Week* 1 Day/Week* No outdoor
watering of
any kind*
Specific Times:
Automatic Sprinklers 8pm – 6am
Specific Times: Hand
Watering/Non-
Automatic Sprinklers*
8pm – 6am
Complete
within two
hours before or
after dawn &
dusk*
No sprinkler use during
high winds At All Times All Watering
Prohibited
Response Actions
23 Note: Actions in one stage apply in later stages.
*Updated based on input
197
Irrigation
PERCENT REDUCTION 10% 20% 30% 40% 50% > 50%
No irrigation for
medians At All Times
Irrigation after
Measurable Rainfall
(48 hours, ¼ inch)*
Encouraged* Prohibited
Response Actions
24 Note: Actions in one stage apply in later stages.
*Updated based on input
PROHIBITED ACTION CURRENTLY IN WSCP STAGE / PERCENT
Street Medians: The use of potable water for irrigation of ornamental turf on public street medians. ✓ 1 / Permanent Measure
48-hour Rain: The application of water to irrigate turf and ornamental landscapes during and within 48 hours after measurable rainfall of at least one fourth of one inch of rain. In determining whether measurable rainfall of at least fourth of one inch of rain occurred in a given area, enforcement may be based on records of the National Weather Service, the closest CIMIS station to the parcel, or any other reliable source of rainfall data available to the entity undertaking enforcement of this subdivision ✓ 2 / 20%
198
CII
PERCENT REDUCTION 10% 20% 30% 40% 50% > 50%
Serving Water upon
Request Only Encouraged Required
Water for Construction
Use* Permit Only* Prohibited*
Opt out of Laundered
Linens* Recommended*
Commercial Nurseries:
Hand-Held or Drip
Irrigation*
11pm – 6am
Response Actions
25 Note: Actions in one stage apply in later stages.
*Updated based on input
199
Washing
PERCENT
REDUCTION 10% 20% 30% 40% 50% > 50%
Vehicle Washing*
Prohibited unless
using a bucket or
hose with shut-off
nozzle or commercial
car wash with
recirculating water*
Commercial
car wash
with
recirculating
water
City reserves
the right to
prohibit all
vehicle
washing*
Hard Surface Wash
Down Prohibited
Response Actions
26 Note: Actions in one stage apply in later stages.
*Updated based on input
PROHIBITED ACTION CURRENTLY IN WSCP STAGE / PERCENT
Impervious Surfaces: The use of potable water for washing sidewalks, driveways, buildings, structures, patios, parking lots, or other hard surfaced areas, except in cases where health and safety are at risk
✓ 1 / Permanent Measure
Shut-Off Nozzle: The use of a hose that dispenses 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 ✓ 1 / Permanent Measure
200
Conservation
PERCENT
REDUCTION 10% 20% 30% 40% 50% > 50%
Conservation – Base
Year Reduction
(2013)*
Encouraged Required Required
Run-Off Prohibited
Response Actions
27 Note: Actions in one stage apply in later stages.
*Updated based on input
PROHIBITED ACTION CURRENTLY IN WSCP STAGE / PERCENT
Limit Runoff: The application of potable water to outdoor landscapes in a manner that causes more than incidental runoff such that water flows onto adjacent property, non- irrigated areas, private and public walkways, roadways, parking lots, or structures ✓ 1 / Permanent Measure
Incorporate conservation needs into Communication & Outreach efforts 201
Water Features & Swimming Pools
PERCENT
REDUCTION 10% 20% 30% 40% 50% > 50%
No water to clean,
fill, operate, or
maintain decorative
fountains
At All Times
Swimming pools,
ponds, fountains,
water displays, hot
tubs, spas, and
artificial lakes shall
not be filled or
refilled*
Mandatory
Prohibit
temporary,
above-
ground
swimming
pools*
Response Actions
28 Note: Actions in one stage apply in later stages.
*Updated based on input
PROHIBITED ACTION CURRENTLY IN WSCP STAGE / PERCENT
Decorative Features: The use of potable water for decorative fountains or the filling or topping-off of decorative lakes or ponds, with exceptions for those decorative fountains, lakes, or ponds that use pumps to recirculate water and only require refilling to replace evaporative losses
✓ 3 / 30%
202
Leaks
PERCENT
REDUCTION 10% 20% 30% 40% 50% > 50%
Leaks repaired in a
timely manner In Effect Within 72
Hours
Response Actions
29 Note: Actions in one stage apply in later stages.
203
Response
Actions
Summary
30 204
Communication & Outreach
ACTIVITY Description Effectiveness
Door Hangers Operations staff (limited)
complete Effective, but not cost efficient
Direct Phone Calls Out of date contact info within
database Not effective
Bilingual Bill Inserts Utilized Somewhat effective
Physical Visit for High
Water Users If no response from phone calls Somewhat effective; users not always at home
Traffic Signs /
Electronic Billboards
Post conservation messaging on
electronic signs Somewhat effective
School / Community
Events
School assemblies, community
fairs, farmers markets, etc.
Potentially effective, if City staff
have a booth
Network TV TV broadcasting Somewhat effective?
Social Media Facebook, other sites? Somewhat effective? Response Actions
31 WS #4 will focus on
developing a City
Communication &
Outreach Plan
205
Opportunities for Improvement
1. Communication & Outreach
• Improve communication & outreach during water shortages.
2. Rebates
• Encourage use of rebate programs offered by the City (high efficiency toilet, high efficiency washing machine, weather based smart irrigation timers, high efficiency nozzles, automatic shut off nozzles, turf replacement program).
• Would City ramp up conservation rebate funding in more severe stages to achieve water reductions?
3. Flexibility
• Add language that upon direction of the City Manager/designee, certain actions may be invoked to comply with any executive orders and state mandates.
Response Actions
32206
NEXT STEPS
15 1. City Communication & Outreach
Workshop: November 17th
2. Broader Task Force Workshop:
Vulnerability Assessment &
Mitigation Actions early 2023
207
Questions?
208
209
DROUGHT TASK FORCE WS #4 SUMMARY
Rialto Drought Contingency Plan
210
Workshop Purpose (10 min)
DCP Elements (5 min)
Outreach Channels (45 min)
Response Action Comm. (45 min)
Next Steps (5 min)
Agenda
211
Meeting Purpose
Develop Communication Plan
• Audit existing outward and
inward communication
• Connect audience to outreach
channels
• Sort external communication
methods
• Align Outreach channels to
response actions
3212
Drought Contingency Planning
• How will we recognize the next drought in the early stages? • How will drought affect us and how can we respond?
• How can we protect ourselves from the next drought?
DCP Elements
4 Introduction
• Purpose, Goals
• Approach
• Historical
Drought
• Agency
Overview
• Supply &
Demand
Drought
Monitoring
• Drought Indices
• Shortage
Stages
Vulnerability
Assessment
• Risks and Impacts
of Drought on
critical resources
• Future Conditions
• Drive mitigation
actions
Mitigation
Actions
• Tool to
prioritize
actions
• List of Actions
Response
Actions
• Related to
Shortage
Stages
Ops. and
Administrative
Framework
• Roles
• Responsibilities
• Resources
Plan Update
Process
• Plan Evaluation
• Future Updates
Most Drought Contingency
Plans are structured to
address these questions:
213
Outreach Channels
Rialto Drought Contingency Plan
214
Communication & Outreach
Response Actions
6 ACTIVITY Description Target Audience Effectiveness
Door Hangers
Delinquencies and shutoffs, COVID,
field service visits, negative
communication
Residential, businesses,
translated to 6 different
languages (disconnections),
typical: Eng, Span
Effective, but not cost efficient,
11k+ connections, #1 effective
Direct Phone Calls Occasional phone calls, numbers can
be out of date Call initiated by customer Do not usually initiate calls Bilingual Bill Inserts Low-income programs, informational Digital version, print version online
Somewhat effective, limited
percentage of people who look at
them. Not effective for people
with auto payment
Physical Visit for High
Water Users
If someone reports a leak, average
2 per day; 2 per day for meter
checks
High water users, leaks,
residents and businesses Effective
215
Communication & Outreach
Response Actions
7 ACTIVITY Description Target Audience Effectiveness
Traffic Signs /
Electronic Billboards
Not yet doing electronic billboards,
looking into it Not used
School / Community
Events
City Hall Events, Used to be a STEM
program and perhaps a conservation
program
Looking into conservation
communication & value of
water/rates
Network TV
City Channel 3 Spectrum Local
Channel, Potentially expand to
YouTube, Not yet with water
programming
Somewhat effective, Only people
with cable
Social Media No water communication
216
Communication & Outreach
ACTIVITY Description Target Audience Effectiveness
Website
RWS site, City (utilities), Determine
where the information lives (utilities vs.
RWS). RWS is billing; utilities =
conservation; link to utilities from RWS
New accounts, pay bills,
Media None
Text Messages None
City Council
Meetings
Agenda items, UWMP presentations,
occasional presentations, water
subcommittee = 2 council members –
could communicate more with them
Currently still sharing on Zoom,
Network TV
Presentations are usually done at
the end (ineffective),
Newsletter Monthly City Manager’s Report, emails,
comprehensive city
Staff, people who signed up,
digital
Response Actions
8217
Communication & Outreach
ACTIVITY Description Target Audience Effectiveness
Newsletter Monthly City Manager’s Report, emails,
comprehensive city
Staff, people who signed up,
digital
Rialto Progress Recreation, community events,
quarterly Mailed to all households
Email List None Collect it with sign-up, just bill
notification 40% have emails
QR Code Created but unused
Response Actions
9218
Communication & Outreach
ACTIVITY Description Target Audience Effectiveness
Digital Ads Social, banners, podcasts, pandora Not currently using Print Materials Nothing yet
Regional Content
(Keep it Up, Step it
up)
Formerly had their own program,
leverage what is out there to elevate
their message,
West Valley
Coordination
Meet with BTAC conservation team,
could share information out and
coordinate
Each have about half customers
Survey Communication preferences (regular
intervals)
Response Actions
10219
Sorting Activity
11220
City of
Rialto
Commissions/
City Council
Meetings
Phone Calls,
Direct or
Transferred
Emails
In-Person Meter
Readers – biz
card with
customer service
Existing Communication Channels
To the City of Rialto
12221
Response Actions Communication
Rialto Drought Contingency Plan
222
Response
Actions
Summary
14 223
NEXT STEPS
15 1. Document discussions into a City
Communication Plan for review
224
Questions?
225
226
DROUGHT TASK FORCE WS #5 SUMMARY
Rialto Drought Contingency Plan
227
DCP Elements (5 min)
Workshop Purpose (5 min)
Regional Overview (5 min)
Vulnerabilities Discussion (100 min)
Next Steps (5 min)
Agenda
228
Drought Contingency Planning
• How will we recognize the next drought in the early stages? • How will drought affect us and how can we respond?
• How can we protect ourselves from the next drought?
DCP Elements
3 Introduction
• Purpose, Goals
• Approach
• Historical
Drought
• Agency
Overview
• Supply &
Demand
Drought
Monitoring
• Drought Indices
• Shortage
Stages
Vulnerability
Assessment
• Risks and Impacts
of Drought on
critical resources
• Future Conditions
• Drive mitigation
actions
Mitigation
Actions
• Tool to
prioritize
actions
• List of Actions
Response
Actions
• Related to
Shortage
Stages
Ops. and
Administrative
Framework
• Roles
• Responsibilities
• Resources
Plan Update
Process
• Plan Evaluation
• Future Updates
Most Drought Contingency
Plans are structured to
address these questions:
229
Meeting Purpose
Identify Vulnerabilities to Supply
in the Region
• Focus on the risks and
impacts on critical resources
• Think about future conditions
• Content developed today will
be used to develop mitigation
actions (next workshop)
4230
Regional Overview
Rialto Drought Contingency Plan
231
232
Vulnerabilities Discussion
Rialto Drought Contingency Plan
233
What risks could
impact supply
reliability for
individual retailers
and the region?
• Climate Change
• Dry Year Supply
• Infrastructure
• Regulatory, Environmental, & Water Rights
• Source Water Quality Degradation
• Other
234
Climate Change Related Vulnerabilities
From 2020 IRUWMP
▪ Uncertainty around the Sacramento-San Joaquin Bay Delta reduce imported water reliability.
▪ Existing groundwater capture facilities may not have the capacity or operational ability to capture less frequent, but more intense storm events.
▪ More frequent drought periods will result in more frequent and intense wildfires. Surface water quality and the ability to capture storm flows will be reduced. ▪ Uncertainty related to managing intense winter storms to protect downstream life and property will make holding water in the flood system for recharge more difficult. ▪ Increased temperatures would result in increased water demand for landscape irrigation.
▪ Decreased runoff and subsurface flows from the mountain front areas as the result of more frequent and severe droughts reduces natural groundwater recharge 9235
What risks could
impact supply
reliability for
individual retailers
and the region?
• Climate Change
• Dry Year Supply
• Infrastructure
• Regulatory, Environmental, & Water Rights
• Source Water Quality Degradation
• Other
236
What are the
Top 3 Vulnerabilities
that keep you up at night?
Prioritization
237
NEXT STEPS
15 1. Next Workshop: Select Dates
➢February 27th or March 6th
➢Discuss prioritization of
vulnerabilities & brainstorm mitigation
actions
238
Questions?
239
Workshop Report Out
Rialto Drought Contingency Plan
240
Vulnerabilities Discussion
Rialto Drought Contingency Plan
241
Input
• Susceptible to weather
• Power supply constraints, including influences by outside-the-region conditions
• Oroville & Lake Mead impacts supply state-wide
• Earthquake
• Well shafts may shift
• Power supply may be interrupted
• Drought & seismic event were to occur at the same time = potentially catastrophic • Financial risks
• Maintain existing infrastructure and improve resiliency while selling less water to customers
16 All Sources
242
Input
• Environmental and permitting work takes a long time
• Financial risk / long term affordability to implement projects needed to maintain the existing level of service
• Rate structures cannot support large increases
• Growth has/is occurring, but water use is efficient (large change in population, but small change in demand)
• Lack of support from elected official to raise rates
17 All Sources
Potential Mitigation Action:
• Sustained community response to conservation
243
Input
• Decreased State Water Project
water available and likely
continued reductions in
availability
• Places more stress on groundwater
sources
• Changes in recharge in the San
Bernardino area
• Recharge takes substantial
amounts of time before water can
be recovered and used
18 Imported Water Baseline Feeder
Potential Mitigation Actions
• Active recharge within pressure zones
(PUT/TAKE short-term)
• Groundwater basin councils
Potential Mitigation Action
• Rialto/West Valley Water District
agreement for SWP/treatment plant use
• Opportunity to supplement supply to
the City of Colton
244
Input
• Susceptible to weather
• Rainfall and pumping patterns
• Minimally influenced by Lytle Basin
conditions
• Power supply constraints
• Water quality becomes a limiting
factor above adjudicated water
levels
• Perchlorate Plume present
• Limited recharge opportunities
(Cactus Basin)
19 Rialto-Colton Basin Riverside-Arlington Basin
• Limited well capacities
• Water quality issues (MTBE
Contamination plume)
245
Input
• Regulatory management zone
extractions are a fixed amount
• EPA requirement
• Subsidence risk with low water levels
• Habitat & regulatory issues
• Regional dry year strategy =
recharge Bunker Hill Basin but
limited infrastructure is available for
quick use
• Eastern portion of the Basin is less
vulnerable to declining water levels
Potential Mitigation Actions
• Recharge areas less susceptible to lower
groundwater levels & construct regional mains to
distribute water
• Establish a conjunctive use program
• Study to characterize risk in this Basin
20 Bunker Hill Basin
246
Input
• Shallow basin, strongly impacted by
drought. Water levels drop quickly,
and wells have already been
lowered.
• Conditions in this Basin impact
multiple agencies
• Water quality impacts (naturally-
occurring arsenic and other
contaminants)
• Stranded assets within this Basin
• Little to no recharge opportunities
because land has been fully
developed
21 Lytle Basin Lytle Creek
• Susceptible to weather
247
Top Vulnerabilities Identified During the
Workshop
22 Water Quality
& Emerging Regulations
Aging Infrastructure &
Replacement Needs
Power Availability
Declining Water Levels
& Response Time
Supply-Chain Material
Availability
Earthquake
Rate Structure &
Conservation
Influenced by Reduced
SWP Availability
248
Supply Climate
Change
Dry Year
Supply Infrastructure Regulatory &
Environmental
Water
Quality
Likelihood –
Cumulative
Effect of
Factors
Consequence
to Regional
Supply
Portfolio
Imported
Water
High
Medium
Low
X%
Lytle Creek
Bunker Hill
Basin
Bunker Hill via
Baseline Feeder
Lytle Basin
Rialto-Colton
Basin
Riverside-
Arlington Basin
249
250
DROUGHT TASK FORCE WS #6 SUMMARY
Rialto Drought Contingency Plan
251
Meeting Purpose (3 min)
Vulnerabilities Discussion Review (20 min)
Mitigation Actions Discussion (1 hr 15 min)
Scenarios (20 min)
Next Steps (2 min)
Agenda
252
Meeting Purpose
Identify Mitigation Actions to
reduce risk of supply
vulnerabilities in the Region
3253
Vulnerabilities Discussion
Review
Rialto Drought Contingency Plan
254
Vulnerability Assessment
• Based on
• Vulnerability Assessment
Workshop 5 Discussion
• 2020 IRUWMP
• Other Regional Documents
• Other Known Issues
5 Likelihood
Low Vulnerability could occur once every 10 years
Moderate Vulnerability could occur at least 3 times every 10 years High Vulnerability could occur at least 5 or more times every 10 years Impact
Low
If the vulnerability were to occur, it would minimally impact the water supply and/or ability to operate. Agencies could absorb impacts within existing operations.
Moderate
If the vulnerability were to occur, it would noticeably impact the water supply and/or ability to operate. Agencies could adapt with existing resources relatively quickly, but it may put a strain on the system.
High
If the vulnerability were to occur, it would significantly impact the water supply and/or ability to operate. Adaptation could have a significant cost and/or require substantial time to implement.
255
6 Example: See Handout for All Pages
256
Mitigation Actions Discussion
Rialto Drought Contingency Plan
257
CIP Input to the DCP
• Planned projects included in participating agency CIPs can be incorporated into the DCP and aligned with vulnerabilities. This may include projects such as:
• Pipeline replacements
• New wells
• Well rehabilitation
• Treatment
• Backup power
• Others
• Please provide a copy of current CIP if desired to be incorporated into the DCP Mitigation Actions
8258
Lytle Creek Surface Water
Brainstorm Existing & Planned Mitigation Actions
Climate Change
Extended Drought
Infrastructure
• Canal unlining in strategic areas
Admin, Reg, & Environ
• Lytle Creek Watershed Assessment & Restoration? (Water Resources Institute) << IRUWMP Project List
Water Quality 9259
Riverside North Basin
Brainstorm Existing & Planned Mitigation Actions
Climate Change
• Basin Management / coordinate with management of SBB
Extended Drought
• Consider a study to better characterize subsidence.
• Riverside North Aquifer Storage & Recovery Project
• Drill deeper wells and/or reduce pumping.
Infrastructure
• Drill new wells.
Admin, Reg, & Environ
• Safe-Yield Calculation Update?
Water Quality
• Equip existing wells with treatment systems.
• Implement blending or treatment.
10260
Lytle Basin
Brainstorm Existing & Planned Mitigation Actions
Climate Change
• Coordinate efforts with land developers to implement small-scale recharge. • River Ranch Development: install two large basins for recharge; to also be used in dry years.
Additional development on northern end (Valley District/City led) •
Extended Drought
• Consider a study to better characterize subsidence.
• Drill deeper wells and/or reduce pumping.
Infrastructure
Admin, Reg, & Environ
Water Quality
• Implement blending or treatment.
11261
Rialto-Colton Basin
Brainstorm Existing & Planned Mitigation Actions
Climate Change
• Implement the Cactus Basin Recharge Project / construct Cactus Basin Recharge Pipeline.
Extended Drought
• Consider a study to better characterize subsidence.
• Continue monitoring efforts.
• Drill deeper wells and/or reduce pumping.
Infrastructure
Admin, Reg, & Environ
• Implement recommendations in the Rialto Groundwater Management Plan (underway). • Ongoing participation in the Rialto Basin Groundwater Council Water Quality
• Continue to implement the Four Party Implementation Agreement. • Implement blending or treatment.
• Install arsenic treatment system at Rialto City Well 3A. 12262
Bunker Hill Basin
Brainstorm Existing & Planned Mitigation Actions
Climate Change
• Active Recharge projects.
• Weaver Basin Recharge
Extended Drought
• Bunker Hill Conjunctive Use Project
• Consider a study to better characterize subsidence.
• Continued regional strategy focused on recharging during wet years for use in dry years. • Drill deeper wells.
Infrastructure
• Additional regional distribution facilities to convey water to agencies located throughout the region (To Be Discussed).
• Canal unlining in strategic areas
Admin, Reg, & Environ
• Complete an in-depth study to better characterize opportunities for this Basin (SBB Groundwater Optimization Study).
• Continue to implement the Habitat Conservation Plan.
Water Quality
• Implement blending or treatment.
13263
2018
Lowest
Total
Storage
Level
264
2019
After
Wet
Winter
15 265
Imported Water
Brainstorm Existing & Planned Mitigation Actions
Climate Change
• Sites Reservoir to add additional dry-year storage.
• Implement larger-scale stormwater capture and recharge projects when possible.
Extended Drought
• Rialto/West Valley agreement for West Valley Water Treatment Plant capacity/SWP use; supplemental supply for the City of Colton
Infrastructure
• Central Feeder and EBX Intertie Project
• Foothill Pipeline Infrastructure Improvements
• Foothill Pipeline Interior Relining
Admin, Reg, & Environ
• Continue to advocate for improved imported water reliability / Delta Conveyance Project Water Quality
• Delta Conveyance Project will improve water quality once implemented. • Continue to implement the Cooperative Agreement to Protect Water Quality and Encourage the Conjunctive Uses of Imported Water in the Santa Ana River Basin 16266 Other (Not Supply Specific)
Brainstorm Existing & Planned Mitigation Actions
Climate Change
• Purchase backup generators and/or battery storage.
• Waterman Turnout Hydroelectric Plant
Extended Drought
• Develop and implement regional and local communication plans.
Infrastructure
• Reservoir seismic upgrades.
• Distribution pipeline replacement.
• Well rehabilitation & replacement.
• Construct additional interconnections?
Admin, Reg, & Environ
• Evaluate rate structures.
• Seek grant funding for infrastructure projects.
• Construct Lake Rialto for habitat and open space benefits (linked to HCP). • Install Automatic Meter Infrastructure and upgrade remaining meters within the City of Rialto.
Water Quality 17267
Scenarios – Compounding
Risks
Rialto Drought Contingency Plan
268
Top Vulnerabilities Identified During the
Vulnerabilities Assessment Workshop
19 Water Quality
& Emerging Regulations
Aging Infrastructure &
Replacement Needs
Power AvailabilityDeclining Water Levels
& Response Time
Supply-Chain Material
Availability
EarthquakeRate Structure &
Conservation
Influenced by Reduced
SWP Availability
What are the
Top 3
Vulnerabilities
that keep you up at
night?
269
All agencies
experience reduced
GW Production
Capacity by 20%
because of new
regulated
contaminants
AND
5% SWP Allocation
• What mitigation
project(s) would
support you most in
this situation?
• Do you have enough
wells (firm capacity)
to absorb impacts?
• Can you shift to
other wells?
• Would you need to
enact WSCP?
• Would the Baseline
Feeder supply also
be impacted?
Scenario Impact Mitigation
20 COMPOUNDING VULNERABILITIES – SCENARIO 1
270
• Local PSPS
recurring events
impacting all
agencies
AND
• One agency has 2
wells offline due to
premature failure
and it will take 2
years to restore due
to budgeting or
supply chain
constraints
• What mitigation
project(s) would
support you most in
this situation?
• How much is each
agency impacted by
PSPS events?
• Is backup generation
available and
adequate?
• Are interconnections
available, adequate,
and located in
strategic locations?
Scenario Impact Mitigation
21 COMPOUNDING VULNERABILITIES – SCENARIO 2
271
NEXT STEPS
15 1. Workshop summary to be
provided.
2. Information to be compiled in a
Draft DCP.
3. Draft DCP Review Workshop (Date
TBD)
272
Questions?
273
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Appendix B City of Rialto Education
and Engagement Plan
B
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City of Rialto
Rialto DCP Education and Engagement Plan
The Education and Engagement Plan aims to effectively engage and inform the community about Rialto’s DCP, focusing on the six stages of water shortage and associated drought response actions. The goal is to promote water conservation, raise awareness about the severity of the drought, and guide residents through the necessary measures to mitigate its impact. This plan was developed using the input received during Drought Task Force Workshop #4, which focused on Drought Communication.
1.0 Stage Overview
Rialto’s Drought Contingency Plan outlines six stages of drought response, in accordance with its Water Shortage Contingency Plan (WSCP), as shown below. For full details about the drought response actions for each stage, please refer to Section 4 and Appendix E of the DCP.
Shortage Stage Water Supply Shortage Condition
1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 Greater than 50%
Each stage corresponds to a potential water shortage of increasing severity. To resolve or prevent a potential water shortage, Rialto’s WSCP defines a suite of response actions that include demand reduction (or water conservation) and/or supply augmentation actions to balance supply and demand.
This Education and Engagement Plan focuses on actions that Rialto can take to educate and engage with its customers, including communication methods that should be utilized at each stage to help customers effectively reduce their water use to the extent needed to prevent a shortage.
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2.0 Communication Channels
Through workshops with Rialto representatives and in consultation with the City’s existing efforts, the following potential communication channels were identified and incorporated into this plan.
Communication
Channel Effectiveness Level of
Effort Notes/Needs
Cost of
Implementation
$ = Least Expensive;
$$$ = Most Expensive
Door Hangers High High Time intensive for staff to visit homes. Consider outsourcing delivery. $$ Direct Phone
Calls Medium Very High Higher level of effort up front – updating numbers – with decreasing effort for ongoing management $
Bilingual Bill
Inserts Low Medium Less effective for people who auto pay their bills. $$ Physical Visits High High Labor intensive but one of the most effective measures. $$$ Traffic Signs Low Medium Not currently using but should explore utilizing existing road signage for messaging use. Utilize during construction. $
Electronic
Billboards Medium High Expensive but great coverage. Utilize to drive viewers to the website or push actions at higher stages. $$$
School &
Community
Events
Medium High
Branded water bottles and other educational materials with link to website for more information to drive customer awareness and follow through. Effectiveness dependent on attendance and venue. $$$
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Communication
Channel Effectiveness Level of
Effort Notes/Needs
Cost of
Implementation
$ = Least Expensive;
$$$ = Most Expensive
Rialto Network
Television Low Medium City Channel 3 (Spectrum). Cross-post content to YouTube for broader reach. $
Rialto Network
YouTube Low Low Use for reposting, consider creating unique content. Effectiveness based on content and $
Social Media Low Medium City and Rialto Network. Reach diverse audiences. For demographics, visit the recent Sprout Social report. $$ Website Medium Medium QR Code to use on collateral to direct traffic to website. Routinely update so information is current. $
Media Outreach Medium Medium Not currently using. Building media relationships can be a key avenue for information sharing. $$
City Council
Meetings Low High Explore moving the presentations to earlier in the meeting when attendees are most engaged. $
Water Services
e-Newsletters Medium Medium Recommend a campaign to push up subscribers. Good avenue for employee communication. Post-AMI $
Rialto Progress
Mailer Low Low
Mailed to all households (effective) but information can be easily missed (ineffective). Recommend adding a way to track effectiveness – QR code, unique link, etc. 3x year Rialto Progress newsletter (mailed).
$
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Communication
Channel Effectiveness Level of
Effort Notes/Needs
Cost of
Implementation
$ = Least Expensive;
$$$ = Most Expensive
Text Messages Medium High
Higher level of effort up front – updating numbers – with decreasing effort for ongoing management. Include action items and a link to the website. Recommend exploring feasibility after AMI update. $$
Town Hall
Meetings High High Allows for two-way communication. High level of staff time.
Recommend translation services to provide bilingual presentations. $$$ Virtual
Webinars High High
Allows for two-way communication. High level of staff time.
Recommend translation services. Can be more accessible than in- person and recording can be saved.
$$$
Educational
Workshops High High Use to demonstrate actionable items. High level of staff time.
Recommend translation services. $$$
Digital Ads Medium Low Social, banners, podcasts, pandora, etc. Not currently using. Effective at driving traffic to the website. $$
Regional
Collaboration &
Communication
Medium High Utilize to drive themes and leverage complimentary work. $
In addition to outgoing communication channels, the City of Rialto also receives customer and community feedback via:
• Commissions and City Council Meetings
• Emails
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• Phone Calls
• In-Person (especially via meter readers and customer service representatives) Regular community surveys are keys tools for measuring the effectiveness of communication, outreach, and marketing efforts.
Surveys should be conducted at least once per year and campaigns should be adjusted based on the results.
3.0 Tiered-Message Approach
In addition to the expansion of communication channels at each stage, the messaging will also increase in urgency as the potential water shortage increases. Below is an example of the tiered-message approach with an overall sentiment statement and specific recommendations for content. These messages should be adapted to align with Rialto's tone, brand, and specific circumstances.
Stage 1 (10% Reduction):
“Incorporating water-saving efforts into our daily lives is paramount for the Rialto community. Together, small, daily actions form a powerful foundation for ensuring a sustainable and abundant water future.” Stage 2 (20% Reduction):
"ALERT: Stage 2 is here. The drought is deepening and we need your help. A 20% reduction in water use is now necessary. Be mindful of every faucet turned on and every sprinkler in use. Our water reserves are precious—let's save them together! Act now for a sustainable tomorrow."
Stage 3 (30% Reduction):
"URGENT: Stage 3 calls for immediate action. The drought's grip tightens. We face a 30% reduction in water use. Challenge yourself and your community to embrace water-smart habits. Every effort you make contributes to safeguarding our water supply. Conserve today for a resilient future."
Stage 4 (40% Reduction):
"CRITICAL: Stage 4 demands a 40% reduction in water use. The situation is severe. Every drop is vital. Reevaluate your water consumption at home and work. We must all step up our conservation efforts to navigate through these challenging times. Together, we can make a difference."
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Stage 5 (50% Reduction):
"EMERGENCY: Stage 5 is upon us. A 50% water use reduction is our only option. This is a critical juncture. We implore every member of the community to make sacrifices for the greater good. Extreme conservation measures are required now. Act decisively to secure our water future."
Stage 6 (>50% Reduction):
"CRISIS MODE: Stage 6 demands more than a 50% reduction in water use. This is an unprecedented crisis, and our water resources are at their limits. Every action counts. We face difficult choices. Implement drastic conservation measures now. Our community's resilience depends on your commitment."
4.0 Educational Materials
Creating effective educational materials is crucial for conveying key information about the Drought Contingency Plan and promoting water-saving tips.
These recommendations should be adapted based on the unique characteristics and needs of Rialto's community. Regularly update educational materials to align with the current stage of the Drought Contingency Plan.
General Recommendations:
• Clear and Concise Messaging
o Ensure that a diverse audience easily understands the content. o Use clear language and avoid jargon.
• Engaging Visuals:
o Incorporate appealing visuals, such as images, charts, and icons, to make the materials visually attractive. o Use color strategically to highlight important information. • Consistent Branding
o Maintain consistent branding elements across all materials to reinforce recognition. 281
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o Use the official Rialto Water Services (or the City) logo and color scheme. • Multilingual Content
o Translate materials into Spanish to enhance accessibility. Utilize community input and census data to identify other populations that may require translated materials.
o Include pictorial representations for universal understanding. 282
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5.0 Community Engagement Program
Conducting community workshops and meetings are an effective way to engage residents and businesses in understanding and implementing water conservation measures outlined in the Drought Contingency Plan.
By tailoring workshops and meetings to the specific needs and challenges of each stage, Rialto can maintain a consistent and effective presence in the community, fostering a sense of shared responsibility and commitment to water conservation.
Key Elements for Each Workshop/Meeting:
• Regular Schedule
o Plan a regular schedule for community workshops and meetings, ensuring consistent engagement throughout the stages of the Drought Contingency Plan.
o As the stages increase, the number of events should also increase. • Venue Selection
o Choose easily accessible and central venues to maximize attendance. Consider virtual options for flexibility and broader participation.
• Diverse Formats
o Mix formats to cater to different preferences, including traditional town hall meetings, virtual webinars, and interactive workshops.
• Multilingual Approach
o Provide materials and translators to ensure accessibility for diverse language groups within the community. • Collaboration with Stakeholders
o Collaborate with local schools, businesses, and community organizations to increase attendance and outreach. • Q&A Sessions
o Allocate dedicated time for questions and answers.
o Provide knowledgeable experts to address concerns.
• Interactive Sessions
o Include interactive activities to make the workshops engaging. o Work with community members to share their experiences. 283
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• Visual Aids
o Use visuals, charts, and graphics to simplify complex information. o Demonstrate the impact of water reduction visually.
• Takeaway Materials
o Distribute branded promotional items, pamphlets, brochures, and guides with water-saving tips. o Share digital resources for ongoing reference.
• Feedback Mechanisms
o Establish feedback channels for continuous improvement. o Encourage participants to share their thoughts and suggestions.
Example Outreach Formats:
1. Educational Workshops and Training Sessions
• Objective: Enhance community members' understanding of water conservation methods and encourage practical implementation.
• Implementation: Conduct hands-on workshops on water-efficient gardening, home water audits, and leak detection. • Collaborate with local experts to facilitate training sessions on water-saving technologies.
2. Water Conservation Challenges and Competitions
• Objective: Instill a sense of friendly competition and community pride in water-saving achievements. • Implementation: Organize water reduction challenges for neighborhoods or schools. • Recognize and reward the most significant water-saving efforts with community-wide celebrations.
3. Community Events
• Objective: Increase awareness and understanding of the Drought Contingency Plan's stages and the community's role in water conservation.
• Implementation: Host town hall meetings or webinars to discuss the current stage and provide updates. • Participate in community fairs or expos (tabling events) with booths dedicated to water-saving practices and information.
4. Local Business Partnerships:
• Objective: Engage businesses to champion water conservation and disseminate information to a broader audience. • Implementation: Collaborate with local businesses to display water-saving tips in-store and on websites. 284
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• Encourage businesses to participate in water reduction campaigns and recognize their efforts publicly.
5. School Programs
• Objective: Educate students on the importance of water conservation and empower them to be ambassadors within their families.
• Implementation: Integrate water conservation curriculum into schools. • Facilitate poster contests or projects focusing on water conservation themes.
6. Social Media Campaigns
• Objective: Leverage social media platforms to reach a wide audience and create a sense of community around water conservation.
• Implementation: Develop engaging content, including videos, infographics, and challenges. • Encourage community members to share their water-saving practices on social media.
7. Neighborhood Ambassadors Program
• Objective: Empower community members to act as ambassadors, disseminating information and encouraging water conservation practices.
• Implementation: Recruit volunteers to distribute educational materials within neighborhoods. • Provide training for ambassadors on effective communication and community outreach.
8. Mobile Educational Units
• Objective: Bring educational resources directly to different neighborhoods within the community. • Implementation: Set up mobile units equipped with educational materials, interactive displays, and knowledgeable staff. • Rotate these units to cover various areas of the community.
9. Community Surveys and Feedback Sessions
• Objective: Understand community perceptions, concerns, and suggestions related to water conservation efforts. • Implementation: Conduct regular surveys to gauge community awareness. • Host feedback sessions to address concerns and gather suggestions for improvement.
10. Recognition Programs
• Objective: Acknowledge and celebrate outstanding community and individual efforts in water conservation. • Implementation: Establish recognition programs for water-conscious businesses, schools, and individuals. • Publicly acknowledge and highlight success stories through various channels. 285
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6.0 Responsive Feedback Options
Developing a responsive feedback mechanism is essential for maintaining open communication with the community during the implementation of the Drought Contingency Plan. Implementing these recommendations will contribute to the establishment of a robust and responsive feedback mechanism that supports transparency, trust-building, and ongoing community engagement.
1. Dedicated Hotline or Online Portal
• Establish a dedicated hotline with trained staff to promptly address queries and concerns. • Utilize the AskRUA email to correspond with the community. • Create an accessible online portal where community members can submit questions, concerns, and suggestions. • Offer an option for community members to provide feedback anonymously to encourage candid responses.
2. Clear Communication Guidelines
• To collect necessary details, develop guidelines for community members to effectively structure their feedback. • Include prompts or templates for common queries to streamline responses.
3. Prompt Response Commitment
• Establish a commitment to respond to inquiries within a specific timeframe (e.g., 24-48 hours). • Communicate this commitment clearly to manage expectations and build trust.
4. Feedback Collection Surveys
• Regularly conduct surveys on the effectiveness of the education and outreach initiatives. • Use surveys to gauge community satisfaction, identify areas for improvement, and understand the community's needs.
5. Community Forums and Q&A Sessions
• Host regular community forums or virtual Q&A sessions to address common concerns and questions. • Use these sessions to provide updates on the current stage of the Drought Contingency Plan.
6. Integration with Social Media
• Monitor social media channels for community feedback and inquiries. • Establish a protocol for responding to comments, direct messages, and mentions related to the Drought Contingency Plan.
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7. Educational Materials
• Include information about the feedback mechanism in all educational materials. • Clearly communicate how community members can provide feedback and what to expect in terms of responses. • Utilize water bottles and other educational materials to drive traffic to the website.
8. Feedback Analysis and Reporting
• Implement a system for tracking and analyzing feedback data. • Generate regular reports summarizing common themes, concerns, and suggestions for internal review and improvement. • Share periodic reports summarizing the feedback received and the actions taken in response. • Demonstrate transparency and accountability by keeping the community informed about the impact of their feedback.
9. Continuous Improvement Loop
• Establish a continuous improvement loop based on the feedback received. • Use community input to refine and enhance the Education and Outreach Plan over time.
7.0 Strategic Partnerships
Building strong partnerships with stakeholders will not only amplify the reach of the Education and Outreach Plan but also foster a sense of shared responsibility in the community. It is crucial to maintain open communication, mutual support, and a collective commitment to water conservation goals.
Below are recommendations for forging and leveraging these partnerships:
1. Community Leaders
• Cultivate relationships with local community leaders, neighborhood associations, and influencers. • Seek their support in promoting water conservation messages and organizing community events.
2. Schools and Educational Institutions
• Collaborate with schools to integrate water conservation education into the curriculum. • Organize workshops, competitions, and events to engage students, who can, in turn, influence their families.
3. Local Businesses
• Engage local businesses as partners in water conservation initiatives. • Encourage businesses to adopt water-saving practices and promote water conservation within their establishments. 287
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4. Chambers of Commerce and Business Associations
• Partner with local chambers of commerce and business associations to disseminate information to a broader business community.
• Explore opportunities for joint events and initiatives.
5. Nonprofit Organizations
• Collaborate with environmental and community-focused nonprofit organizations. • Leverage their networks and resources to enhance the reach of the education and outreach efforts.
6. Faith-Based Organizations
• Build partnerships with local churches, mosques, temples, and other faith-based organizations. • Utilize religious leaders as advocates for water conservation within their congregations.
7. Media Outlets
• Partner with local newspapers, radio stations, and television channels to amplify messaging. • Provide regular updates and expert interviews on water conservation topics.
8. Government Agencies
• Collaborate with relevant government agencies to align messaging and outreach efforts. • Ensure consistency in communication across various levels of government.
Tip: Encourage Participation
• Provide incentives for stakeholders to actively participate in water conservation initiatives. • Recognize and publicly acknowledge their contributions.
The success of the Rialto Water Services Drought Contingency Plan depends on the collective commitment and active participation of community members. As Rialto navigates through the six stages of drought mitigation efforts, the Education and Outreach Plan serves as a crucial guide.
Through engaging workshops, collaborative partnerships, and an open feedback mechanism, Rialto should strive to ensure everyone is informed, empowered, and actively contributing to our shared goal of water resilience. Together, the City and its community can make a lasting impact, safeguarding precious water resources for the well-being of current and future generations in Rialto.
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Appendix C Regional Supply
Description
Excerpt from the 2020 IRUWMP
C
289
The following pages are an excerpt from the 2020 Integrated Regional Urban Water Management Plan (2020 IRUWMP).
The entire 2020 IRUWMP can be viewed at:
https://www.yourrialto.com/DocumentCenter/View/1601/2020-U pper-Santa-Ana-River-Watershed-Integrated-Regional-Urban-Wat er-Management-Plan
290
3-1
P AR T 1 : R E G I O NA L C O NT E X T
Regional Water Sources and
Management
This chapter describes the current and planned water resources available within the region for the 25-year period covered by the Plan.
Management of the various water sources is also described, including legal judgements and regional management groups.
The Upper SAR watershed is an area with unique hydrological characteristics and complex water management issues. This Region was selected for IRWM planning in large part because of the following factors:
• Rapid population growth in the area and the potential for continued rapid growth in the future.
• Significant institutional issues, hydrological characteristics, and court judgments that separate the Upper SAR
watershed from the downstream portion of the watershed at the Riverside Narrows just upstream from Prado Dam. The Orange County Water District v. City of Chino, et al., Case No. 117628 (Orange County Judgment) and the Western
Municipal Water District of Riverside County v. East San Bernardino County Water District, Case No. 78426 (Western Judgment), have significant influence on water management of the Upper SAR and dictate, to some degree, how water resources should be managed in the Upper SAR watershed.
IN THIS SECTION
• Regional Water
Sources
• Summary of Water
Sources Used by
Agency
• Local Water
Management
• Water Quality
• Major Regional
Water
Infrastructure
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• The Upper SAR watershed is an area with unique physical characteristics. The Upper SAR has widely variable hydrology and challenging water management issues, including the desire to optimize the use of local water supplies. The agencies in the Region coordinate and collectively manage the groundwater spreading and pumping, and work together on this cooperative, integrated plan which gives them the opportunity to regularly evaluate their needs and their management strategies.
• The region has significant groundwater basin storage.
3.1 Surface Hydrology
Surface hydrology of the Region is comprised of the SAR and its tributaries as shown in Figure 3-1. A number of surface reservoirs in the Region are operated primarily for agricultural and urban water use but are also regulated for instream flows and recharge of groundwater basins.
3.1.1 SAR Reaches
The IRWM Region is within the boundaries of the Santa Ana Regional Water Quality Control Board (SARWQCB). The SARWQCB has divided the mainstem of the SAR into six reaches.
Reaches 1 through 6 have reach numbers beginning at the Pacific Ocean and increasing upstream. Reaches 3 through 6 are located in the Upper SAR watershed. These reaches are described in more detail below, from upstream to downstream.
Reach 6 (River Mile (RM) 70.93 and Above)
This reach includes the river upstream of Seven Oaks Dam where flows consist largely of snowmelt and storm runoff and water tends to be of excellent quality (SARWQCB 1995).
Reach 5 (RM 70.93 to RM 57.68)
This reach extends from Seven Oaks Dam to the Bunker Hill Dike (San Jacinto fault), which marks the downstream edge of the Bunker Hill Subbasin. This reach tends to be dry except during storm flows. The lower end of this reach sometimes has rising groundwater and includes the San Timoteo Creek, which flows on an intermittent basis (SARWQCB 1995).
Reach 4 (RM 57.68 to RM 49.00)
This reach includes the SAR from Bunker Hill Dike downstream to Mission Boulevard Bridge in Riverside. The bridge is the upstream limit of rising groundwater resulting from the constriction at Riverside Narrows. Until about 1985, most water in the reach percolated to the local groundwater leaving the lower part of the reach dry. However, flows in the lower end of this reach may now intermittently contain rising groundwater, RIX, and Rialto discharge, and flows from San Timoteo Creek.
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Reach 3 (RM 49.00 to RM 30.50)
This reach includes the SAR from Mission Boulevard Bridge in Riverside to Prado Dam. At the Riverside Narrows, rising groundwater feeds several small tributaries including Sunnyslope Channel, Tequesquite Arroyo, and Anza Park Drain (SARWQCB 1995).
3.1.2 Natural Runoff
Runoff records provide information on the characteristics of flow in the SAR and its tributaries.
Such records are available for a number of stream gaging stations located on the mainstem of the SAR and throughout the SAR watershed. The SAR runoff records demonstrate the highly variable nature of river flow, with large floods and long periods of extremely low flow. Three gaging stations provide streamflow data for the USARW. Mentone Gage (USGS record 11051500) is representative of SAR flow near Seven Oaks Dam. There are two other USGS gaging stations located downstream of Seven Oaks Dam, but within the USARW basin—the “E” Street Gage (USGS Gage 11059300) located in the City of San Bernardino at river mile (RM)
57.69 and the Metropolitan Water District Crossing Gage (Metropolitan Crossing) (USGS Gage 11066460) located at RM 45.7 near Riverside Narrows. Table 3-1 provides the annual median, maximum, and minimum streamflow recorded at the Mentone, “E” Street, and Metropolitan Crossing gages (see Figure 2-1 for gage locations).
Reach 3 of the Santa Ana River
Photo Credit: San Bernardino Valley
Municipal Water District
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Table 3-1 : Upper SAR Median, Maximum, and Minimum Annual Flow (in AF)
GAGE MEDIAN ANNUAL FLOW MAXIMUM ANNUAL FLOW MINIMUM ANNUAL FLOW Mentonea 8,977 204,812 9
“E” Streetb 21,202 316,302 567
Metropolitan Crossingc 77,166 355,468 21,000
Source: USGS gage data.
a USGS Gage 11051500. Period of record is WY 1899-1900 through WY 2019-20. b USGS Gage 11059300. Period of record is WY 1938-39 through WY 1945-46, WY 1947-48 through 1953-54, WY 1966- 67 through WY 2019-20.
c USGS Gage 11066460. Period of record is WY 1969-70 through WY 2018-19.
As exhibited in Table 3-1, flow in the
SAR is highly variable from year to year.
Flow in the SAR increases downstream
due to inflows from tributaries, rising
water1, and treated water from
wastewater treatment plants (WWTPs).
SAR flows at the “E” Street Gage
include flows from Mill Creek and San
Timoteo Creek, but not from Lytle and
Warm Creeks, which enter the SAR
below the “E” Street Gage. SAR flows at
the Metropolitan Crossing include
inflows from Lytle and Warm Creeks,
two large public WWTPs, and rising
water.
Flows in excess of about 70,000 AFY
have a frequency of occurrence of only
13% at the River Only Mentone Gage,
whereas this same flow has a frequency
of occurrence of 62% at the
Metropolitan Crossing Gage.
Additionally, in the upstream areas,
minimum annual stream flows are
generally much smaller than minimum
annual flows in the downstream areas.
1 Rising water is used to describe noticeable increases in streamflow in reaches where a subsurface restriction forces groundwater to the surface.
Storm flows in Mill Creek
Photo Credit: San Bernardino Valley
Water Conservation District
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The largest monthly flows typically occurred in February and March, and the lowest monthly flows typically occurred between August and October. Although streamflow increases downstream, the timing of flows (i.e., when the monthly maximums and minimums occur) is similar to the timing of flows observed at the Mentone Gage.
There are numerous tributaries that contribute flow to the mainstem of the SAR in the Region, including Mill Creek, City Creek, Plunge Creek (a tributary of City Creek), Mission Zanja Creek (located upstream of San Timoteo Creek), San Timoteo Creek, East Twin Creek, Warm Creek, and Lytle Creek (Figure 3-1). The flow (under 100-year flood conditions2) contributed by each of these tributaries is provided in Table 3-2. As a reference, during a 100-year flood event, Seven Oaks Dam would release up to 5,000 cfs (USACE 1988).
Table 3-2 : Tributary Flow Contribution to the SAR (100-Year Flood Event Discharge in cfs)
TRIBUTARY INFLOW RIVER MILE
Mill Creek 23,000 68.67
City Creek & Plunge Creek (Combined) 16,460 62.87
Mission Zanja Creek 6,100 59.08
San Timoteo Creek 19,500 58.44
East Twin Creek 18,000 58.14
Lytle Creek & Warm Creek (Combined) 70,000 56.74
Source: USACE 2000 and SBCFCD 2013
2 A flood as defined under the Standard Flood Insurance Policy is a general and temporary condition of partial or complete inundation of normally dry land areas from overflow of inland or tidal waters or from the unusual and rapid accumulation of runoff of surface waters from any source. A 100-year flood refers to a flood level with a 1 in 100 percent chance of being equaled or exceeded in any given year.
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Figure 3-1. Creeks and Rivers in the Region
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3.2 Imported Water
Imported water from the California State Water Project (SWP), is available to the Region for the East Branch through the Region’s State Water Contractors: Valley District, San Gorgonio Pass Water Agency, and Metropolitan Water District of Southern California (Metropolitan).
Valley District is the fifth (5th) largest State Water Contractor, with an annual entitlement of 102,600 AF. Valley District takes delivery of SWP water at the Devil Canyon Afterbay. From this location, Valley District can deliver water to the west via the San Gabriel Valley Municipal Water District Pipeline (Valley District owns capacity in this pipeline) or to the east to San Gorgonio Pass Water Agency through the East Branch Extension of the SWP.
San Gorgonio Pass Water Agency is downstream of Valley District on the East Branch of the California Aqueduct. See the San Gorgonio Pass Water Agency 2020 UWMP for more information. Valley District and the SGPWA coordinate work as they both share capacity along the East Branch Extension. Two retail water districts included in this plan (YVWD and SMWC) are co-located in the within the Valley District and SGPWA service areas. In addition to operating some mutually used facilities, the Valley District and SGPWA have an agreement in place to share excess imported supplies when available, which is included in Part 3 Appendix B.
Metropolitan provides SWP water to portions of the Region through their member agencies, Western and Inland Empire Utilities Agency (IEUA). Western does not currently deliver imported water to its retail agencies within the Region but may in the future. FWC and WVWD are co-located within both the Valley District and IEUA service areas and FWC uses imported water from both IEUA and Valley District.
In 2021, Valley District entered into a new Coordinated Operating Agreement (COA) with Metropolitan that would sell them most of Valley District’s surplus imported water; this COA replaced the previous version that expired in 2016. One of the terms of the COA requires Metropolitan to offer 50% of any surplus water purchased under this agreement to their member agencies in the SARCCUP Program. The COA is included in Part 3 Appendix B. Metropolitan and its member agencies that are part of the SARCCUP have also developed a companion agreement that describes how SARCCUP will function within Metropolitan’s existing policies.
3.2.1 SWP Overview
Imported water is available to the Region from the California State Water Project (SWP), which is the largest state-built, multi-purpose water project in the country; it is paid for by the 29 State Water Contractors, including Valley District, SGPWA and MWDSC and operated and maintained by DWR. It was authorized by the California State Legislature in 1959, with the construction of most initial facilities completed by 1973. The SWP is a water storage and delivery system of reservoirs, aqueducts, power plants and pumping plants. Its main purpose is to capture and store water at Lake Oroville and distribute it to the 29 State Water Contractors in 297
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Northern California, the San Francisco Bay Area, the San Joaquin Valley, the Central Coast, and Southern California. Of the contracted water supply, approximately 70 percent goes to urban users and 30 percent goes to agricultural users. The SWP makes deliveries to two-thirds of California's population. The SWP is also operated to improve water quality in the Sacramento-San Joaquin Delta, control Feather River flood waters, provide recreation, and enhance fish and wildlife.
The SWP includes 34 storage facilities, reservoirs, and lakes, 20 pumping plants, four pumping- generating plants, five hydro-electric plants, and approximately 701 miles of aqueducts and pipelines. The primary water source for the SWP is the Feather River, a tributary of the Sacramento River. Water released from Oroville Dam on the Feather River flows down natural river channels to the Sacramento-San Joaquin River Delta (Delta). While some SWP supplies are pumped from the northern Delta into the North Bay Aqueduct, the vast majority of SWP supplies are pumped from the southern Delta into the 444-mile-long California Aqueduct. The California Aqueduct conveys water along the west side of the San Joaquin Valley to Edmonston Pumping Plant, where water is pumped over the Tehachapi Mountains. The aqueduct then divides into the East and West Branches.
California Aqueduct
Photo Credit: Western
Municipal Water District
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Each SWP contractor’s SWP Water Supply Contract includes a “Table A,” which lists the maximum amount of water an agency is entitled to throughout the life of the contract. The Table A amount is each contractor’s proportionate share, or “allocation,” of the SWP water supply.
However, actual deliveries of SWP water each year vary, based mainly on the amount of precipitation (for other factors, see Section 3.2.2 below).
While the primary supply of water available from the SWP is allocated Table A supply, SWP supplies in addition to Table A water are periodically available, including “Article 56C” carryover water, “Article 21” water, “Turnback Pool” water, and DWR “Dry Year Purchase Programs”.
Pursuant to the long-term water supply contracts, SWP contractors have the opportunity to carry over a portion of their allocated water approved for delivery in the current year for delivery during the next year (Article 56C) with advance notice when they submit their initial request for Table A water, or within the last three (3) months of the delivery year. The carryover program was designed to encourage the most efficient and beneficial use of water and to avoid obligating the contractors to “use or lose” the water by December 31 of each year. The water supply contracts outline the criteria for carrying over Table A water from one year to the next.
Normally, carryover water is water that has been exported during the year, has not been delivered to the contractor during that year, and has remained stored in the SWP share of San Luis Reservoir to be delivered during the following year. Storage for carryover water no longer becomes available to the contractors if it interferes with storage of SWP water for project needs.
Article 21 water (which refers to the SWP contract provision defining this supply) is water that may be made available by DWR when excess flows are available in the Delta (i.e., when Delta outflow requirements have been met, SWP storage south of the Delta is full, and conveyance capacity is available beyond that being used for SWP operations and delivery of allocated and scheduled Table A supplies). Article 21 water is made available on an unscheduled and interruptible basis and is typically available only in average to wet years, generally only for a limited time in the late winter.
In wet periods, the amount of water available may exceed the amount of storage in the SWP system. During these times, State Water Contractors may have excess SWP water. Valley District has agreements, in place, to sell surplus water to SGPWA and Metropolitan Water District of Southern California
3.2.1.1 SWP Contract Amendments
Contract Extension
DWR provides water supply from the SWP to 29 SWP Contractors (Contractors) in exchange for Contractor payment of all costs associated with providing that supply. DWR and each of the Contractors entered into substantially uniform long-term water supply contracts (Contracts) in the 1960s with 75-year terms. The first Contract terminates in 2035, and most of the remaining Contracts terminate within three years after that.
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The majority of the capital costs associated with the development and maintenance of the SWP is financed using revenue bonds. These bonds have historically been sold with 30-year terms.
It has become more challenging in recent years to affordably finance capital expenditures for the SWP because bonds used to finance these expenditures are limited to terms that only extend to the year 2035, less than 30 years from now. To ensure continued affordability of debt service to Contractors, it was necessary to extend the termination date of the Contracts to allow DWR to continue to sell bonds with 30-year terms.
Public negotiations to extend the Contracts took place between DWR and the Contractors during 2013 and 2014. An agreement-in-principle (AIP) was reached and was the subject of analysis under the requirements of the California Environmental Quality Act (CEQA) (Notice of Preparation dated September 12, 2104). On December 11, 2018 DWR Director approved the Water Supply Contract Extension Project. In accordance with CEQA, DWR also filed its Notice of Determination for the project with the Governor’s Office of Planning and Research. In addition, DWR filed an action in Sacramento County Superior Court to validate the Contract Extension Amendments (https://water.ca.gov/Programs/State-Water- Project/Management/Water-Supply-Contract-Extension). After CEQA was completed and contract language was finalized, DWR and 18 contractors have executed the Extension Amendment. The Extension Amendment would extend the contracts through 2085 and improve the project’s overall financial integrity and management. The Extension Amendment is the subject to a validation action and two CEQA lawsuits.
Water Management Tools
In a December 2017 Notice to Contractors, DWR indicated its desire to supplement and clarify the water management tools through this public process. Seeking greater flexibility to manage the system in order to address changes in hydrology and further constraints placed on DWR’s operation of the SWP, PWAs and DWR conducted public negotiations in 2017 to improve water management tools (WMT Amendment). The goal of the negotiations was to develop concepts to supplement and clarify the existing SWP Contract’s water transfer and exchange provisions to provide improved water management amongst the PWAs. Importantly, the transfers and exchanges provided for in the contract amendment are limited to those transfers and exchanges amongst the Public Water Agencies (“PWA’s”) with SWP Contracts.
In June 2018, PWAs and DWR completed an AIP which included specific principles to accomplish this goal. These principles included adding contract language to include a process for transparency for transfers and exchanges. The principles also include amending existing contract provisions to provide new flexibility for single and multi-year non-permanent water transfers, allowing PWAs to set terms of compensation for transfers and exchanges, and providing for the limited transfer of carryover and Article 21 water.
In October 2018, a Draft Environmental Impact Report (DEIR) was circulated for the contract amendments. The AIP at that time included cost allocation for the California WaterFix project 300
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(WaterFix). In early 2019, the Governor decided not to move forward with WaterFix and DWR rescinded its approvals for WaterFix. After this shift, the PWAs and DWR held a public negotiation session and agreed to remove the WaterFix cost allocation sections from AIP, but to keep all the water management provisions in the AIP. The AIP for water management provisions was finalized on May 20, 2019. In February 2020, DWR amended and recirculated the Partially Recirculated DEIR for the State Water Project Supply Contract Amendments for Water Management and in August 2020, DWR certified the Final EIR. The EIR is being challenged in court. The WMT Amendment is effective when 24 SWP PWAs approve the amendment. The transfer and exchange tools will be available during litigation unless there is a final court order prohibiting their implementation.
Delta Conveyance Project
Consistent with Executive Order N-10-19, in early 2019, the state announced a new single tunnel project, which proposed a set of new diversion intakes along Sacramento River in the north Delta for SWP. In 2019 DWR initiated planning and environmental review for a single tunnel Delta Conveyance Project (DCP) to protect the reliability of SWP supplies from the effects of climate change and seismic events, among other risks. DWR’s current schedule for the DCP environmental planning and permitting extends through the end of 2024. DCP will potentially be operational in 2040 following extensive planning, permitting and construction.
The third set of amendments would allocate Delta Conveyance Project costs and benefits among the SWP PWAs. Public negotiations between DWR and PWA’s for the Delta Conveyance Project began in 2019 and were completed in April 2020. These negotiations led to an Agreement in Principle (“AIP”) for an Amendment to the State Water Contract regarding the Delta Conveyance Project. The Parties’ goal was to equitably allocate costs and benefits of a Delta Conveyance Facility and to preserve State Water Project operational flexibility. A decision by each participating PWA for approving a contract amendment with DWR would not occur until after the environmental review for the Delta Conveyance Project is completed. That decision would likely occur in 2023, at the earliest.
3.2.2 Imported Water Supply Reliability
This section presents the imported water supply reliability assumptions used in Valley District’s water supply reliability analysis to meet the requirements of the UWMP Act; these apply only to Valley District. For assumptions and analysis used by San Gorgonio Pass Water Agency, Metropolitan and Western, refer to their respective 2020 UWMPs.
The amount of SWP water delivered to State Water Contractors in a given year depends on a number of factors, including the demand for the supply, amount of rainfall, snowpack, runoff, water in storage, pumping capacity from the Delta, and legal/regulatory constraints on SWP operation. Water delivery reliability depends on three general factors: the availability of water, the ability to convey water to the desired point of delivery, and the magnitude of demand for the 301
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water. Urban SWP contractors’ requests for SWP water, which were low in the early years of the SWP, have been steadily increasing over time. Regulatory constraints have changed over time, becoming more restrictive.
DWR prepares a biennial report to assist SWP contractors and local planners in assessing the availability of supplies from the SWP. DWR issued its most recent update, the 2019 DWR State Water Project Delivery Capability Report (DCR), in August 2020. In this update, DWR provides SWP supply estimates for SWP contractors to use in their planning efforts, including for use in their 2020 UWMPs. The 2019 DCR includes DWR’s estimates of SWP water supply availability under both existing (2020) and future conditions (2040).
DWR’s estimates of SWP deliveries are based on a computer model that simulates monthly operations of the SWP and Central Valley Project systems. Key inputs to the model include the facilities included in the system, hydrologic inflows to the system, regulatory and operational constraints on system operations, and contractor demands for SWP water. In conducting its model studies, DWR must make assumptions regarding each of these key inputs.
In the 2019 DCR for its model study under existing conditions, DWR assumed: existing facilities, hydrologic inflows to the model based on 82 years of historical inflows (1922 through 2003), current regulatory and operational constraints including 2018 COA Amendment, 2019 biological opinions and 2020 Incidental Take Permit, and contractor demands at maximum Table A Amounts.
To evaluate SWP supply availability under future conditions, the 2019 DCR included a model study representing hydrologic and sea level rise conditions in 2040. The future condition study used all of the same model assumptions as the study under existing conditions, but reflected changes expected to occur from climate change, specifically, projected temperature and precipitation changes centered around 2035 (2020 to 2049) and a 45 cm sea level rise.
3.2.2.1 Sites Reservoir
Sites Reservoir is a proposed new 1,500,000 acre-feet off-stream storage reservoir in northern California near Maxwell. Sacramento River flows will be diverted during excess flow periods and stored in the off-stream reservoir and released for use in drier periods. Sites Reservoir is expected to provide water supply, environmental, flood and recreational benefits. The proponents of Sites Reservoir include 31 entities including Valley District and SGPWA. Sites Reservoir is expected to compliment the Delta Conveyance Project by providing approximately 240 TAF (Sites Reservoir Value Planning Report, Table 8-1) of additional deliveries during drier years. Sites Reservoir is currently undergoing environmental planning and permitting. Sites was conditionally awarded $816 million in grant funds from the California Water Commission for ecosystem, recreation, and flood control benefits under Proposition 1. Reclamation may also invest in Sites under the Water Infrastructure Improvements for the Nation (WIIN) Act and recently transmitted a final Federal Feasibility Report to Congress for the project. 302
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Both Valley District and SGPWA are proponents of the Sites Reservoir Project and have made financial contributions to its planning and development. As both agencies are financial contributors to the project, both would receive a share of deliveries to South of Delta agencies during average and drier years.
The Sites Reservoir and DCP are critical investments to protect and enhance the reliability of SWP supplies and increase deliveries in dry years. Section 3.2.3.1 describes how these improvements are incorporated into Valley District’s UWMP Analysis. For information on SWP supply reliability for the SGPWA, Metropolitan, IEUA and Western, see their respective 2020 UWMPs.
3.2.3 Valley District SWP Supply Reliability (Review)
Once the bonds from initial construction of the SWP have been paid off in 2035, the taxpayers in Valley District’s service area will have invested over $1.23 billion for their share of the SWP storage and delivery system. Table 3-3 presents historical total SWP water deliveries to Valley District.
Table 3-3. Historical State Water Project Deliveries to Valley District
CALENDAR YEAR TOTAL DELIVERIES (AF)
2010 30,310
2011 29,129
2012 40,216
2013 31,020
2014 19,223
2015 35,430
2016 62,600
2017 78,396
2018 44,307
2019 78,478
2020 23,504
Valley District’s analysis assumes that the long-term average allocation reported in the 2019 DCR for the existing conditions study provide appropriate estimate of the SWP water supply availability under current conditions. For the long-term planning purposes of the Valley District supply reliability analysis, the long-term average allocations reported for the future conditions study from 2019 DCR are used to estimate future SWP water supply availability. It is assumed 303
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that the existing condition allocations will apply until 2035 and the future conditions allocations will apply in 2040 and 2045.
Figure 3-2. Estimated SWP Water Supply Availability from the DWR 2019 DCR Existing Conditions Scenario
The estimated long-term average SWP water supply availability from the 2019 DCR is shown in Figure 3-2 and Table 3-4.
Table 3-4. SWP Table A Water Supplies Available (Long-term Average – 1922-2003)
STATE WATER PROJECT SUPPLIES 2025 2030 2035 2040 2045
% of Table A Amount Available 58% 58% 58% 52% 52%
Anticipated Deliveries (AFY) 59,508 59,508 59,508 53,352 53,352 Source: 2019 DWR Delivery Capability Report
Table 3-5 summarizes estimated SWP supply availability to Valley District in a single-dry year (based on a repeat of the worst-case SWP allocations of 2014 and 2021) and over a multiple- dry year period (based on a repeat of the worst-case historic six-year drought of 1987 to 1992).
To further evaluate the range of potential supply conditions, the Region has elected to evaluate supplies under a 30-year drought and a wet year. The wet year reliability is provided in the 2019 DCR. The 30-year drought reliability was calculated using the same methodology DWR uses to determine the six-year drought supplies but extended over a longer period. These values are also shown in Table 3-5 and the range of water supply availability by year used in each scenario is shown in
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1922
1925
1928
1931
1934
1937
1940
1943
1946
1949
1952
1955
1958
1961
1964
1967
1970
1973
1976
1979
1982
1985
1988
1991
1994
1997
2000
2003
Percent of Maximum SWP Table A
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Figure 3-3.
For each condition, it is assumed that the existing condition allocations will apply until 2035 and the future conditions allocations will apply in 2040 and 2045.
Table 3-5 Estimated SWP Table A Supply Reliability
STATE WATER PROJECT SUPPLIES 2025 2030 2035 2040 2045
SINGLE DRY YEAR (2014 AND 2021)
% of Table A Amount Available 5% 5% 5% 5% 5%
Anticipated Deliveries (AFY) 5,130 5,130 5,130 5,130 5,130 MULTIPLE DRY YEAR (1987-1992)
% of Table A Amount Available 26% 26% 26% 22% 22%
Anticipated Deliveries (AFY) 26,676 26,676 26,676 22,572 22,572 30-YEAR DROUGHT (1922-1951)
% of Table A Amount Available 53% 53% 53% 48% 48%
Anticipated Deliveries (AFY) 54,378 54,378 54,378 49,248 49,248 WET YEAR (1983)
% of Table A Amount Available 97% 97% 97% 97% 97%
Anticipated Deliveries (AFY) 99,522 99,522 99,522 96,444 96,444 Source: 2019 DWR Delivery Capability Report, except for Single Dry Year (see Section 3.2.3.1)
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Figure 3-3. Estimated SWP Supply Availability for Wet Year, Multiple Dry Years and a 30-Year Drought
As described in Section 3.2.1, there are several programs that give Valley District flexibility to increase deliveries above the Table A allocation in a given year, including the use of carry over water. As urban contractor demands increase in the future, the amount of water turned back and available for purchase will likely diminish. In critical dry years, DWR has formed Dry Year Water Purchase Programs for contractors needing additional supplies. Through these programs, water is purchased by DWR from willing sellers in areas that have available supplies and is then sold by DWR to contractors willing to purchase those supplies. Because the availability of these supplies is somewhat uncertain and do not represent a large quantity of water, they are not included as supplies available to Valley District in this Plan. However, Valley District’s access to these supplies when they are available may enable it to improve the reliability of its SWP supplies in extremely dry years to help meet its direct delivery demands.
The main strategy Valley District will use to supplement supplies in dry years is wet year water stored in local groundwater basins and water banks. Valley District is already implementing conjunctive use in the SBB and there are plans to develop additional conjunctive use programs.
3.2.3.1 Lowest SWP Water Supply Allocation
DWR’s 2019 Delivery Capability Report indicates that the modeled single dry year SWP water supply allocation is 7% under the existing conditions. However, historically the lowest SWP allocations were at 5% in 2014 and initial allocations in 2021. Due to extraordinarily dry conditions in 2013 and 2014, the initial 2014 SWP allocation was a historically low 5% of Table A Amounts, was later reduced to 0% in January 2014, and was later raised back to 5%, the lowest ever final total SWP water supply allocation, at the time. The circumstances that led to 0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1922
1925
1928
1931
1934
1937
1940
1943
1946
1949
1952
1955
1958
1961
1964
1967
1970
1973
1976
1979
1982
1985
1988
1991
1994
1997
2000
2003
Highest delivery in a wet
year is 99,522 AFY
Deliveries
average
26,676
AFY over
multi-year
drought
Deliveries average
54,378 AFY over the
driest 30-year period
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the low 2014 SWP water supply allocation was unusual, and although possible, likely have a low probability of frequent occurrence.
Each year by October 1, SWP contractors submit their requests for SWP supplies for the following calendar year. By December 1, DWR estimates the available water supply for the following year and sets an initial supply allocation based on the total of all contractors’ requests, current reservoir storage, forecasted hydrology through the next year, and target reservoir storage for the end of the next year. The most uncertain of these factors is the forecasted hydrology. In setting water supply allocations, DWR uses a conservative 90% hydrologic forecast, where nine out of ten years will be wetter and one out of ten years drier than assumed.
DWR re-evaluates its estimate of available supplies throughout the runoff season of winter and early spring, using updated reservoir storage and hydrologic forecasts, and revises SWP supply allocations as warranted. Since most of California’s annual precipitation falls in the winter and early spring, by the end of spring the supply available for the year is much more certain, and in most years DWR issues its final SWP allocation by this time. While most of the water supply is certain by this time, runoff in the late fall remains somewhat variable as the next year’s runoff season begins. A drier than forecasted fall can result in not meeting end-of-year reservoir storage targets, which means less water available in storage for the following year.
Water year 2013 was a year with two hydrologic extremes. October through December 2012 was one of the wettest fall periods on record but was followed by the driest consecutive 12 months on record. The supply allocation for 2013 was a low 35% allocation. However, the 2013 hydrology ended up being even drier than DWR’s conservative hydrologic forecast, so the SWP began 2014 with reservoir storage lower than targeted levels and less stored water available for 2014 supplies. Compounding this low storage situation, 2014 also was a critically dry year, with runoff for water year 2014 the fourth driest on record.
The exceedingly dry sequence from the beginning of January 2013 through the end of 2014 was one of the driest two-year periods in the historical record. As noted above, the circumstances that led to the low 2014 and 2021 SWP water supply allocation were unusual, and likely have a low probability of frequent occurrence in the future.
For the reasons stated above, Valley District’s UWMP uses a more conservative assumption of a 5-percent allocation of SWP Table A amounts instead of the 7% from the DCR.
3.2.3.2 Reliability Improvements from Sites Reservoir and DCP There are currently four alternatives being evaluated for the Sites Reservoir Project and each would yield a different volume of water for Valley District based on the level of federal participation in the project. Since a final alternative has not been selected, Alternative 3, which yields the lowest deliveries to South of Delta’s participants out of all the alternatives, is represented in this section to be conservative. Based on Alternative 3, estimated deliveries from 307
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Sites Reservoir to Valley District during dry and critically dry years and average over the life of the project are shown in Table 3-6.
Table 3-6: Estimated Sites Reservoir Deliveries to Valley District
LONG TERM AVERAGE DELIVERIES (AFY) DRY AND CRITICALLY DRY YEAR DELIVERIES (AFY) Alternative 3 12,100 30,400
Source: Sites Reservoir Value Planning Report, Table 8-1
For purposes of this report, it is estimated that the Sites Reservoir Project will come online between in 2040. DWR estimates of SWP supply reliability in its 2019 Delivery Capability Report are based on existing facilities, and do not include the proposed Sites Reservoir. For supply projections made for years 2020 through 2035, it is assumed that SWP reliability is equal to values shown in the 2019 Delivery Capability Report. For supply projections made for years 2040 and beyond, additional SWP supply available from Sites Reservoir is included.
The DCP is still under development and no published yield numbers were available at the time this plan was published.
3.3 Groundwater
Local precipitation that runs off as surface water and soaks into the ground, called “groundwater”, meets about 60% of the regional demand in an average year. This section provides a description of local surface water and groundwater management in the San Bernardino Valley, including court judgments, groundwater management plans, and groundwater pumping rights.
The groundwater basins utilized by IRUWMP agencies are depicted in Figure 3-4. The figure also shows the San Bernardino Basin (SBB), which encompasses basins previously known as the Bunker Hill and Lytle Creek Basins.
The basins of the IRUWMP area are among the most rigorously managed in the State.
Planning and management efforts evaluating needs and supplies have been established for most of the basins within the watershed through the next 20 to 40 years. Groundwater extractions and conditions are monitored and tracked annually by the Western-San Bernardino Watermaster and the Basin Technical Advisory Committee. 308
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Figure 3-4. Groundwater Basins of the Region
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3.3.1 San Bernardino Basin
The San Bernardino Basin (SBB), labeled the “San Bernardino Basin Area” in the Judgment, was adjudicated in gross, by the Western-San Bernardino Judgment (Western Judgment) in 1969. The SBB has a surface area of approximately 141 square miles and lies between the San Andreas and San Jacinto faults. The basin is bordered on the northwest by the San Gabriel Mountains and Cucamonga fault zone; on the northeast by the San Bernardino Mountains and San Andreas fault zone; on the east by the Banning fault and Crafton Hills; and on the south by a low, east-facing escarpment of the San Jacinto fault and the San Timoteo Badlands. Alluvial fans extend from the base of the mountains and hills that surround the valley and coalesce to form a broad, sloping alluvial plain in the central part of the valley. The SBB encompasses the Bunker Hill sub basin (DWR Number 8.02-06) defined by DWR and also includes a small portion of the Yucaipa Basin (8-02.07) and Rialto-Colton Basin (8-02.04) as defined by DWR.
The Western Judgment calculated the natural safe yield of the SBB to be 232,100 AF per year (AFY) for all extractions, including surface water diversions and groundwater pumping (the Western Judgment is provided in Appendix I). Surface water is diverted from Mill Creek, Lytle Creek, and the SAR.
The Western Judgment allocates 64,862 AFY of the safe yield, which equates to 27.95 percent, to the Plaintiffs. The Plaintiffs include the City of Riverside (the successor to the Riverside Water Company and the Gage Canal Company), Riverside Highland Water Company, Meeks & Daley Water Company, and Regents of the University of California. The Riverside County agencies may not exceed their allocation unless they participate in “New Conservation” (explained below).
The Non-Plaintiffs’ (agencies within San Bernardino County) rights were defined in the Judgment as 167,238 AFY, which equates to 72.05 percent of the safe yield. San Bernardino agencies are allowed to extract more than 167,238 AFY from the SBB, as long as they import and recharge a like amount of supplemental water into the SBB. The Western-San Bernardino Watermaster provides an annual accounting of both the plaintiff and non-plaintiff extractions and a comparison to the safe yield. The Judgment requires the non-plaintiffs to provide replenishment water whenever the cumulative extractions exceed the cumulative safe yield. If the cumulative extractions are less than the cumulative safe yield, a “credit” is earned. When cumulative extractions are greater than the cumulative safe yield, a “debit” is taken. To date, the cumulative extractions have been less than the cumulative safe yield since the judgment was signed so that the non-plaintiffs have never been required to recharge the basin.
Recharge is also required to offset the export of water outside the SBB in excess of the amount recorded during the base period (1959-1963). Credits are earned for any new supplies such as stormwater capture. As of the accounting performed for the 2020 Annual Western-San 310
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Bernardino Watermaster Report, the Non-Plaintiffs have 463,168 AF of net credit accumulated in the SBB and are, therefore, not required to recharge. Although there is no recharge requirement under the Judgment, the Non-Plaintiffs have continued to recharge the SBB.
3.3.1.1 Lytle Creek Sub basin
Lytle Creek Basin is part of the SBB, and it is not identified as a separate sub-basin in DWR Bulletin 118-2003; however, the sub basin is an integral part of the Upper Santa Ana Valley Groundwater Basin. Historically, local agencies have recognized Lytle Creek sub basin as a distinct groundwater sub basin. In the Western Judgment, the Bunker Hill and Lytle Creek sub basins are combined into the SBB. However, the three separate water-bearing zones and intervening confining zones of the Bunker Hill sub basin are not observed in the Lytle sub basin.
Sediments within the Lytle sub basin are, for the most part, highly permeable, and the aquifer has a high specific yield. High permeability and specific yield tend to result in an aquifer that responds rapidly to changes in inflow (precipitation and streamflow) and outflow (groundwater pumping, streamflow, and subsurface outflow).
Lytle Creek sub basin is adjoined on the west by the Rialto-Colton sub basin along the Lytle Creek fault, and on the east and southeast by the Bunker Hill sub basin along the Loma Linda fault and Barrier G. The northwestern border of the sub basin is delineated by the San Gabriel Mountains, and runoff from the mountains flows south/southeast through Lytle and Cajon Creeks into the basin.
Numerous groundwater barriers are present within Lytle Creek sub basin, resulting in six compartments within the sub basin. Barriers A through D divide the northwestern portion of the sub basin into five sub-areas and the southeastern portion of the sub basin comprises the sixth sub-area. Barrier F divides the northwestern sub-areas from the southeastern sub-area.
Studies have shown that the groundwater barriers are less permeable with depth. When groundwater levels are high during wet years, more leakage occurs across the barriers than when groundwater levels are lower (i.e., during dry years). The amount of pumping in each sub-area, in large part, controls the movement of groundwater across the barrier within the older alluvium but not the younger alluvium.
It is important to note that the water rights in Lytle Creek are set forth in long-standing court judgments governing the rights of the parties in that basin. The Lytle Creek Basin was adjudicated under the 1924 Judgment No. 17,030 from the Superior Court of San Bernardino County and is managed by the Lytle Creek Water Conservation Association, which is made up of the successors to the stipulated parties of the judgment (a copy of the 1924 judgment is provided in Part 3).
3.3.2 Rialto-Colton Sub basin
The Rialto-Colton sub basin (DWR 8-02.04) underlies a portion of the upper Santa Ana Valley in southwestern San Bernardino County and northwestern Riverside County. This sub basin is 311
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about 10 miles long and varies in width from about 3.5 miles in the northwestern part to about
1.5 miles in the southeastern part. This sub basin is bounded by the San Gabriel Mountains on the northwest, the San Jacinto fault on the northeast, the Badlands on the southeast, and the Rialto-Colton fault on the southwest. The Santa Ana River cuts across the southeastern part of the basin. The basin generally drains to the southeast, toward the Santa Ana River. Warm and Lytle Creeks join near the southeastern boundary of the basin and flow to meet the Santa Ana River near the center of the southeastern part of the sub basin.
The principal recharge areas are Lytle Creek, Reche Canyon in the southeastern part, and the Santa Ana River in the south-central part. Lesser amounts of recharge are provided by percolation of precipitation to the valley floor, underflow, and irrigation and septic returns.
Underflow occurs from fractured basement rock and through the San Jacinto fault in younger Santa Ana River deposits at the south end of the sub basin and in the northern reaches of the San Jacinto fault system. Groundwater recharge has been augmented through the use of spreading basins.
The groundwater extractions in the Rialto-Colton sub basin are governed by the Rialto Basin Decree, the Rialto Basin Settlement Agreement, and the Western Judgment. The basin was adjudicated under the 1961 Decree No. 81,264 of the Superior Court of San Bernardino County and is managed by the Rialto Basin Management Association (stipulated parties of the judgment). The Rialto Basin Decree only provides the rights of the stipulated parties to pump out of the Rialto Basin, which is an area defined within the Decree that is smaller than the Rialto-Colton sub basin and includes only a portion of the northwestern half of the Rialto-Colton Basin. The boundary of the Rialto Basin is described in the Rialto Decree as Exhibit 1.
When the basin’s three index wells (WVWD Well No. 11, and 16, and Rialto’s Well 4) average mean groundwater level elevations are above 1002.3 feet msl when measured during March, April, or May, the stipulated parties have no restrictions on yearly extractions. When the average standing water levels in the three index wells (Duncan Well, Willow Street Well, and Boyd Well) falls below 1002.3 feet msl and is above 969.7 feet msl, the Rialto Basin Decree stipulated parties are restricted to total extraction rights of 15,290 AFY distributed amongst the parties as shown in Table 3-7.
When the average of the three index wells drops below 969.7 feet msl, ground water extractions are reduced for all parties stipulated in the decree by 1 percent per foot below the 969.7-foot level, but not to exceed 50-percent reduction. Historic reductions to adjustable rights are summarized in Table 3-8.
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Table 3-7: 1961 Decree Adjudicated Rights to the Rialto Basin
MEMBER
ADJUSTABLE
RIGHTS FIXED RIGHTS TOTAL RIGHTS
WATER RIGHTS
ALLOCATION
PERCENTAGE
Colton 3,010 890 3,900 25%
Rialto 2,846 1,520 4,366 29%
WVWD 5,594 510 6,104 40%
FUWC 550 370 920 6%
TOTAL 12,000 3,290 15,290 100%
Table 3-8: Historic Reductions to Pumping Rights in the Rialto Decree Area
WATER YEAR % REDUCTION
2009-10 7
2010-11 14
2011-12 19
2012-13 17
2013-14 27
2014-15 32
2015-16 30
2016-17 31
2017-18 38
2018-19 39
2019-20 29
Fontana Water Company and the City of Rialto extract water from a small area referred to as “No Man’s Land” that is outside the boundary of the Rialto Basin in the 1961 Decree but is still believed to be within the Rialto-Colton sub basin. In 2018, Rialto, Colton, WVWD, Valley District, Cucamonga Valley Water District, and Fontana Water Company entered into a Settlement Agreement that resulted in Fontana’s No Man’s Land production of 5,014 acre feet/year being counted as part of the Rialto Basin production limits in the 1961 Decree in addition to the total established decree rights of 15,290 AFY. The rights of the parties of the Settlement Agreement to extract water from the Rialto Basin based on the 1961 Decree and the Settlement Agreement are provided in Table 3-9. As part of the Settlement Agreement, these parties also agreed to form a Rialto Basin Groundwater Council (Rialto Basin GC), which was formed in 2021. 313
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The Rialto Basin GC will develop, adopt, and implement a sustainable groundwater management plan, which will include implementing groundwater recharge projects to restore groundwater levels.
Table 3-9: 2018 Settlement Agreement Updated Adjudicated Rights to the Rialto Basin
MEMBER
ADJUSTABLE
RIGHTS FIXED RIGHTS
NO MAN’S LAND
ADJUSTABLE
RIGHTS TOTAL RIGHTS
WATER RIGHTS
ALLOCATION
PERCENTAGE
Colton 3,010 890 0 3,900 19%
Rialto 2,846 1,520 0 4,366 22%
WVWD 5,594 510 0 6,104 30%
FUWC 550 370 5,014 5,934 29%
Total 12,000 3,290 5,014 20,304 100%
The Rialto-Colton sub basin is named the “Colton Basin Area” in the Western Judgment.
The Western Judgment requires the average lowest static water levels in three index wells in the Rialto-Colton Basin and Riverside North Basins to be no lower than 822.04 feet above mean sea level (MSL). If the water levels fall below 822.04 feet above MSL, the non-plaintiffs are obligated to recharge the basin with imported water or reduce extractions. Extractions by the plaintiffs are limited to 3,381 AFY.
The safe yield for the Rialto-Colton Basin was not defined by the Western Judgment or the Rialto Basin decree. Valley District developed an estimate of the safe yield, as shown in Table 3-10. The estimate uses a period when the storage level in the basin starts and ends at nearly the same point, from 1979 through 2014. During that period, the average production from the basin was 15,567 AF which includes water imported from the State Water Project. The estimate adjusts the production by the relative decrease in storage over the period. After adjusting for the decline in storage and the recharge of imported water, the estimated safe yield is estimated to be 13,623 AFY. The Western Judgment set aside 3,381 AFY for Riverside entities, leaving the balance, 10,242 AFY for San Bernardino entities within the Valley District service area. 314
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Table 3-10 Estimated Safe Yield from Rialto-Colton Basin
PARAMETER VALUE (AF)
Average groundwater production from 1979 through 2014 15,567 Adjustment for average change in storage, 1979 through 2014 (864) Adjustment for average imported water recharged,1979 through 2014 (1,080) Estimated Safe Yield 13,623
Portion of Safe Yield reserved for Riverside entities 3,381 Portion of Safe Yield for San Bernardino entities 10,242
3.3.3 Riverside-Arlington Sub-basin
The Riverside-Arlington sub basin, (DWR 8-02.03) underlies part of the Santa Ana River Valley in northwest Riverside County and southwest San Bernardino County. This sub basin is bounded by impermeable rocks of Box Springs Mountains on the southeast, Arlington Mountain on the south, La Sierra Heights and Mount Rubidoux on the northwest, and the Jurupa Mountains on the north. The northeast boundary is formed by the Rialto-Colton fault, and a portion of the northern boundary is a groundwater divide beneath the community of Bloomington. The Santa Ana River flows over the northern portion of the sub basin. Annual average precipitation ranges from about 10 to 14 inches. The Riverside-Arlington sub basin is replenished by infiltration from Santa Ana River flow, underflow past the Rialto-Colton fault, intermittent underflow from the Chino sub basin, return irrigation flow, and deep percolation of precipitation.
The Western Judgment includes the Riverside Basin Area which consists of a portion of the Riverside-Arlington sub-basin upstream of Riverside Narrows. Groundwater extractions in the Riverside North Groundwater Basin (the portion of the Riverside Basin Area in San Bernardino County) are governed by the Western Judgment. Extractions from the Riverside North Basin for use in Riverside County are limited to 21,085 AFY by the Judgment. Extractions for use in San Bernardino County are unlimited, provided that water levels at three index wells in the Rialto- Colton and Riverside North Basins stay above 822.04 feet MSL. The 2015 IRWMP provided an estimate of 30,100 AFY as the sustainable supply from Riverside North for use in San Bernardino County, based on extractions from 1996 to 2005. That value is also used for this Plan. Valley District has budgeted to update the safe yield estimate prior to the next plan update.
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3.3.4 Yucaipa Sub basin
The Yucaipa sub basin (DWR 8-02.07) underlies the southeast part of San Bernardino Valley. It is bounded on the northeast by the San Andreas fault, on the northwest by the Crafton fault, on the west by the Redlands fault and the Crafton Hills, on the south by the Banning fault, and on the east by the Yucaipa Hills. The average annual precipitation ranges from 12 to 28 inches.
This part of the San Bernardino Valley is drained by Oak Glen, Wilson, and Yucaipa Creeks south and west into San Timoteo Wash, a tributary to the Santa Ana River.
Dominant recharge to the sub basin is from percolation of precipitation and infiltration within the channels of overlying streams, particularly Yucaipa and Oak Glen Creeks; underflow from the fractures within the surrounding bedrock beneath the sub basin; and artificial recharge at spreading grounds.
The Yucaipa Subbasin is a DWR high‐priority groundwater basin and is subject to SGMA. The Yucaipa Groundwater Sustainability Agency was established in 2017 to manage groundwater within the Sub‐basin. Valley District, YVWD, Redlands, SGPWA, SMWC, South Mountain Water Company, Western Heights Water Company, and the City of Yucaipa are currently working together as the Groundwater Sustainability Agency, commonly referred to as the Yucaipa Sustainable Groundwater Management Agency (Yucaipa-SGMA) in support of the development of a Groundwater Sustainability Plan, which is currently under development.
A recent study estimates a sustainable yield for the Sub‐basin of approximately 9,600 AFY and a storage capacity totaling more than 356,000 AF. From 2007 to 2012, artificial recharge efforts increased the total groundwater storage in the Yucaipa Basin to 1998 levels. Information utilized by the GSA indicates that the Subbasin is currently being sustainably managed. The GSA members are currently working together to develop a GSP to continue sustainably managing the Subbasin.
Figure 3-5. Yucaipa Basin Groundwater Management Zones
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3.3.5 San Timoteo Sub basin
The San Timoteo Sub basin (DWR 8-02.08) is largely outside of the Valley District service area but is one of the sources used by YVWD and SMWC (SMWC produces groundwater from the adjudicated Beaumont Basin area discussed below). The San Timoteo sub basin underlies Cherry Valley and the City of Beaumont in southwestern San Bernardino and northwestern Riverside counties. The sub basin is bounded to the north and northeast by the Banning fault and impermeable rocks of the San Bernardino Mountains, Crafton Hills, and Yucaipa Hills; on the south by the San Jacinto fault; on the west by the San Jacinto Mountains; and on the east by a topographic drainage divide with the Colorado River hydrologic region. The surface is drained by Little San Gorgonio Creek and San Timoteo Canyon to the Santa Ana River.
Average annual precipitation ranges from 12 to 14 inches in the western part to 16 to 18 inches in the eastern part of the sub basin.
Holocene-age alluvium, which consists of unconsolidated clay, silt, sand, and gravel, is the principal water-bearing unit in this sub basin. The alluvium, which is probably thickest near the City of Beaumont, thins toward the southwest and is not present in the central part of the sub basin. The Pliocene-Pleistocene-age San Timoteo Formation consists of alluvial deposits that have been folded and eroded. These deposits are widely distributed and principally composed of gravel, silt, and clay, with comparatively small amounts of calcite-cemented conglomerate.
The clasts are chiefly granitic, with lesser amounts of volcanic and metamorphic pebbles and cobbles. The total thickness of the San Timoteo Formation is estimated to be between 1,500 and 2,000 feet, but logs of deep wells near the central part of the sub basin indicate water- bearing gravels to depths of only 700 to 1,000 feet.
The Banning and Cherry Valley faults and two unnamed faults in the northeast part of the sub basin offset impermeable basement rocks, stepping down to the south. Water levels change across the Banning fault, dropping 100 to 200 feet to the south. In the western part of the sub basin, water levels drop to the south about 75 feet across the Loma Linda fault and about 50 feet across the San Timoteo barrier. In the northeastern part of the sub basin, water levels drop to the south across two unnamed faults. Each of these faults appears to disrupt groundwater movement in the sub basin.
Groundwater is replenished by subsurface inflow and percolation of precipitation, runoff, wastewater discharge, and imported water. Runoff and imported water are delivered to streambeds and spreading grounds for percolation. The San Timoteo Subbasin is not adjudicated, and reliable estimates of total groundwater extractions are not available. However, water table elevations within the San Timoteo Subbasin have not declined over the years which is likely due to the constant flow of treated wastewater from YVWD that flows through San Timoteo Creek.
The San Timoteo Subbasin was originally designated by DWR as a medium‐priority groundwater basin subject to SGMA. In 2017, the San Timoteo Groundwater Sustainability Agency was formed by a Memorandum of Agreement (MOA) between the City of Redlands, 317
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SGPWA, BCVWD and YVWD to manage the non-adjudicated portion of the San Timoteo Subbasin. In 2018, Eastern Municipal Water District submitted a Basin Boundary Modification Request for the San Timoteo Subbasin that was subsequently approved by DWR.
In 2019, the basin was reprioritized as a very low priority by DWR and therefore preparation of a GSP is not required by SGMA, but encouraged and authorized. In 2020, a revised MOA was adopted by YVWD, the City of Redlands, BCVWD and the City of Banning reforming the San Timoteo GSA to further the shared intent of the parties to maximize funding opportunities, increase transparency and foster cooperation. It was agreed by the Parties of the San Timoteo GSA to establish Management Areas for the GSA for each agency’s respective boundaries and to initially create separate GSPs for each Management Area that could be consolidated into a single GSP in the event that the priority of the basin is changed by DWR and a GSP is required.
The lead agency for each management area, shown in Figure 3-6, is independently responsible for the development of a GSP for their respective Management Areas. The parties agreed to work together and with local stakeholders to carry out the policy, purposes, and requirements of SGMA within the boundaries of the San Timoteo GSA. The parties agreed to initially create separate GSPs for each management zone
Figure 3-6. San Timoteo Subbasin Management Areas
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The adjudicated portion of the San Timoteo Subbasin, the Beaumont Basin Adjudicated Area, is managed by the Beaumont Basin Watermaster and not the San Timoteo GSA, as discussed in the following section.
3.3.5.1 Beaumont Groundwater Basin
DWR considers the Beaumont Groundwater Basin to be composed of three other groundwater basins, primarily the San Timoteo sub basin, the Upper Santa Ana Valley Groundwater Basin (No. 8-02), and the San Gorgonio Pass Sub basin (No. 7-21.04). Locally, the Beaumont Basin is treated as a distinct basin. The Beaumont Basin is one of the sources used by YVWD and SMWC.
The Beaumont Basin is located in northwestern Riverside County, south of the Yucaipa Basin.
The basin eventually drains to San Timoteo Creek, a tributary of the Santa Ana River, and covers approximately 26 square miles. Groundwater elevations generally slope from the northeast to southwest in the basin.
Groundwater within the basin is predominantly found in Holocene age alluvium and in the San Timoteo Formation. While the San Timoteo Formation extends to depths in excess of 1,500 feet, water bearing sediments within the Beaumont Basin exist to depths of 700 to 1,000 feet.
Estimates for total groundwater storage capacity within the basin vary. The Beaumont Basin storage capacity is estimated at approximately 1,000,000 AF.
In February 2004, the San Timoteo Watershed Management Authority filed a judgment adjudicating the groundwater rights in the Beaumont Basin and assigned the Beaumont Basin Watermaster (BBW) with the authority to manage the groundwater basin. The Beaumont Basin Watermaster is comprised of managers from the Beaumont Cherry Valley Water District, City of Banning, City of Beaumont, SMWC, and YVWD. The Beaumont Basin Watermaster originally established a long-term yield for the Beaumont Basin of 8,560 AFY. The safe yield is reevaluated every ten years and on April 1st, 2015, the BBW approved the adoption of Resolution 2015-01 (2013 Reevaluation of the Beaumont Basin Safe Yield Report and Redetermination of the Safe Yield of the Beaumont Basin), which reduced the safe yield to 6,700 AFY.
The Beaumont Basin Watermaster Website provides copies of the Judgment, Annual Reports and related information: https://beaumontbasinwatermaster.org/ The Judgement includes a controlled overdraft (temporary surplus) provision that allows extraction up to 160,000 AF over the 10-year period immediately following the Judgement inception. During the first 10 years, the agencies could extract 16,000 AFY; after the first 10 years, extractions are limited to the amount each agency has in storage or credit. Agencies must provide the BBW with funds necessary to replace any amount of overproduction that may have occurred over a 5-year consecutive period.
The adjudication of the Beaumont Basin has defined overlying and appropriator pumping rights and also allows for supplemental water to be stored and recovered from the basin. 319
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3.3.6 Chino Sub basin
Fontana Water Company, the City of Rialto, and WVWD extract water from Chino Sub basin (DWR 8-02.01), an adjudicated basin managed by the Chino Basin Watermaster. The Chino Sub basin lies in the southwest corner of San Bernardino County. The Chino Sub basin is bordered to the east by the Rialto-Colton fault. In the other three directions, the Chino Sub basin is ringed by impermeable mountain rock, the San Gabriel Mountains to the north, the Jurupa Mountains and Puente Hills to the south and southwest. Average annual precipitation across the basin is 17 inches. This part of the San Bernardino Valley is drained by San Antonio Creek and Cucamonga Creek southerly to the Santa Ana River.
On January 2, 1975, several Chino Basin producers filed suit in California State Superior Court for San Bernardino County (the "Court") to settle the problem of allocating water rights in the Chino Basin. On January 27, 1978, the Court entered a judgment in Chino Basin Municipal Water District v. City of Chino et al. adjudicating water rights in the Chino Basin and establishing the Chino Basin Watermaster. The Judgment adjudicated all groundwater rights in Chino Basin and contains a physical solution to meet the requirements of water users having rights in or dependent upon the Chino Basin. The Judgment also appointed the Watermaster to account for and implement the management of the Chino Basin. The Judgment declared that the initial operating safe yield of the Chino Basin is 145,000 AFY. The Basin is managed through implementation of the Chino Optimum Basin Management Plan. Per the Judgment, WVWD has a minimum of approximately 1,000 AFY of extraction rights. Extractions above that amount must be replenished with SWP water through a program with the Chino Basin Watermaster.
3.3.7 Bear Valley Basin
The Bear Valley Basin (DWR 8-9) encompasses 30.6 square miles under Big Bear Valley, within the San Bernardino Mountains. There are two surface water lakes within the Bear Valley Basin: perennial Big Bear Lake and the ephemeral Baldwin Lake. Surface drainage within the Bear Valley Basin flows to one of the two lakes, typically to Big Bear Lake. Big Bear Lake empties to the west into Bear Creek, which is a tributary of the SAR.
Groundwater from the Bear Valley Basin is primarily found within unconsolidated alluvial deposits. The water‐bearing deposits have been divided into upper, middle, and lower aquifers, with the upper and middle aquifers being the primary producers. The Bear Valley Basin is recharged through percolation from precipitation and runoff and underflow from fractured crystalline rocks, adjacent to and beneath the alluvium. Groundwater levels generally correlate with annual fluctuation of precipitation. Storage capacity is estimated by DWR at 42,000 AF (California Department of Water Resources, February 2004). Perennial yield is estimated to be 5,000 AFY basin‐wide.
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The Bear Valley Basin is not adjudicated and has not been identified by DWR to be in overdraft conditions. The Bear Valley Basin is monitored by Big Bear Lake Department of Water and Power (BBLDWP) and Big Bear City Community Services District (BBCCSD).
BBCCSD, BBLDWP, Big Bear Area Regional Wastewater Agency (BBARWA), and Big Bear Municipal Water District (BBMWD) formed the Bear Valley Basin Groundwater Sustainability Agency (BVBGSA) under a joint power’s agreement on April 26, 2017. BVBGSA is governed by one representative from BBCCSD, one representative from BBARWA, one elected representative from BBMWD and one appointed commissioner from BBLDWP. The Bear Valley Basin GSP is under development and is scheduled for completion in January of 2022, in accordance with the SGMA.
3.3.8 Recharge Area Programs
Conjunctive use of surface water and groundwater is a long-standing practice in the IRWM Region. Part of the potable water used in the Region is imported from sources in the Sierra and Northern California through the SWP. Several reservoirs are operated primarily for the purposes of storing surface water for domestic and irrigation use, but groundwater basins are also recharged from the outflow of some reservoirs. The concept is to maintain streamflow over a longer period of time than would occur without regulated flow and thus provide for increased recharge of groundwater basins. Most of the larger basins in this Region are managed with many conjunctive use projects being developed to optimize and manage water supply.
Numerous groundwater spreading grounds have been developed to recharge the groundwater basins when adequate surface water supply is available. Management of the water level in the SBB, in general, and the Pressure Zone (see Figure 2-6), in particular, is a focus of the groundwater management of the Region.
3.3.8.1 Groundwater Storage Strategy
Storage of imported water during wet years helps the Region make it through dry periods.
The primary storage location is local groundwater basins. Local groundwater basins are preferable due to the proximity to end users, the significant investment in wells, and the reduction in ongoing evaporation associated with storing the water underground. See Chapters 4 and 5 for a summary of estimated recharge needs for each groundwater basin in the Region and the volume of SWP expected to be available for recharge.
3.3.8.2 Spreading Grounds
Artificial recharge in the IRWM Region’s groundwater basins has been occurring as early as 1912. Because of the extremely permeable sand and gravel deposits in the Region’s groundwater basins, maximum instantaneous recharge rates are high.. Because of the size of several of the recharge basins and exceptionally permeable material, a larger quantity of water could be imported and recharged along the base of the San Bernardino Mountains, if necessary (i.e., recharge basin capacity and infiltration rates are not currently limiting the amount of 321
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imported water that is recharged). Any additional recharge and extraction should be carefully planned and implemented to avoid liquefaction and unacceptable decreases in groundwater levels in the basins
Numerous existing groundwater recharge facilities (spreading grounds or spreading basins) are located in the SBB, Rialto-Colton, and Yucaipa Subbasins. The locations of these facilities are shown in Figure 3-9, and selected characteristics are summarized in Table 3-11.
SBVWCD facilities are used for both native water and SWP recharge. Figure 3-7 shows the native water recharged in SBVWCD facilities since 1913. In addition to native water, existing turnouts provide SWP to most recharge facilities, with the exception of the Cactus Spreading and Flood Control Basins, which is planned to be served by the Cactus Basins Pipeline proposed by Valley District.
Figure 3-7. Annual Native Recharge in San Bernardino Valley Water Conservation District Facilities
0 5
10 15
20 25
30 35
40 45
50 55
60 65
70 75
80 1913
1916
1919
1922
1925
1928
1931
1934
1937
1940
1943
1946
1949
1952
1955
1958
1961
1964
1967
1970
1973
1976
1979
1982
1985
1988
1991
1994
1997
2000
2003
2006
2009
2012
2015
2018
Thousand Acre-Feet
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Table 3-11: Regional Recharge Basins
FACILITY NAME OWNER
UNDERLYING GW
BASIN SWP AVAILABILITY CONSTRAINTS
Waterman Basin SBCFCD Bunker Hill A Foothill Pipeline Seasonal restrictions due to storm water
East Twin Creek Spreading
Grounds SBCFCD Bunker Hill A Foothill Pipeline Seasonal restrictions due to storm water
Cactus Basin – 3 and 3a SBCFCD Rialto-Colton Devil Canyon-Azusa Pipeline Seasonal restrictions due to storm water
Redlands Recharge Basins Redlands Bunker Hill B No Operation due to WWTP flows Lytle Creek North WRP Effluent
Disposal Ponds
San Bernardino County
Special Districts
Department (SBCSDD)
Lytle Basin Potential from nearby Devil Canyon-
Azusa Pipeline Operation due to WWTP flows
Wilson Basin SBCFCD Yucaipa Basin East Branch Extension Seasonal restrictions due to storm water
Proposed Plunge Basin Valley District Bunker Hill B No Seasonal restrictions due to storm water
Sweetwater Basins SBCFCD Bunker Hill Foothill Pipeline Seasonal restrictions due to storm water
Santa Ana SBVWCD Bunker Hill Foothill Pipeline Seasonal restrictions due to storm water
Santa Ana Low SBVWCD Bunker Hill Greenspot Pipeline Seasonal restrictions due to storm water
Mill Creek Valley District, RPU,
SBVWCD Bunker Hill Greenspot Pipeline Seasonal restrictions due to storm water
Oak Glen SBCFCD, YVWD Yucaipa Basin No Seasonal restrictions due to storm water
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3.4 Recycled Water
Development of recycled water is a strategy in the IRUWMP. Although it is costly, it is also highly reliable since there will be flows to wastewater plants whether the weather is wet or dry.
For that reason, recycled water is often labeled “drought-proof”. Because it is the costliest supply, the region has not heavily developed this supply choosing instead to develop other, less costly supplies first. The recent drought highlighted the advantage of having a drought-proof supply, like recycled water, as a part of the regional water portfolio. This led to Valley District and the agencies within its service area, as well as Western and the City of Riverside, to prepare a Regional Recycled Water Concept Study. This is a collaborative process to identify recycled water projects that maximize regional benefits to water supply reliability, water quality, and habitat sustainability. The stakeholder group is targeting development of 18,023 AFY of new recycled water supply in the near term, however there is an obligation to discharge a minimum of 57,402 AFY to the SAR to sustain the natural habitat. The recycled water projects identified in this process were incorporated into the HCP analysis to ensure that implementation of these projects support both water supply and habitat sustainability.
Currently, some individual agencies are using recycled water for non-potable reuse. Recycled water produced in the Valley District service area that is not currently used for non-potable reuse is discharged to the SAR or its tributaries and has become a critical source of water that sustains habitat in natural rivers and streams, including the Santa Ana Sucker, which is a Federally listed endangered species. Development of new recycled water supplies in the upper SAR watershed must be balanced with the need to conserve and maintain this habitat.
Potential recycled water supplies for each retailer are described in their respective chapters.
Anticipated recycled water supplies are included in the regional summary of supplies.
3.4.1.1 Wastewater
There are 12 publicly owned WWTPs located within the Region. Eight of these plants contribute to surface flow of the SAR as shown in the effluent use column of Table 3-12. Between 1970 and 2019, the total volume of treated wastewater contributions to SAR flows increased from 44,000 AFY to 116,000 AFY, with a peak of 188,000 AF in 2004-2005 (SAR Watermaster 2019).
Three wastewater treatment plants (Redlands, Beaumont, and Yucaipa) discharge to the SAR and its tributaries upstream of the City of San Bernardino, but these discharges generally do not flow continuously to the SAR at “E” Street (SAR Watermaster 2013). Two plants, the Rapid Infiltration and Extraction (RIX) WWTP in the City of Colton and the Rialto WWTP in the City of Rialto, discharge directly to the SAR via a discharge channel at RM 53.46. Wastewater discharges from these plants have hydraulic continuity to the SAR above Riverside Narrows.
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Table 3-12: Wastewater Treatment Plants in the Region
FACILITY
INFLUENT
FLOW SOURCE
CAPACITY
(MGD)
2020
AVERAGE
FLOW
(MGD)1 EFFLUENT USE
San Bernardino County Special
Districts Department Lytle
Creek North WRP
SBCSDD,
WVWD 1.75 0.4
Non-potable reuse for Irrigation
and Dust Control (336 AF)
Remaining discharged onsite
disposal ponds
Big Bear Area Regional
WWTP
BBCCSD,
BBLDWP, SB
County
4.9 2.0
Non-potable reuse for irrigation in
Lucerne Valley. Remaining
discharged to disposal ponds.
Future discharge to Big Bear Lake
planned
Rialto WWTP Rialto 11.7 7
Non-potable reuse for irrigation
(10 AFY)
Remaining discharged to Rialto
Channel/SAR
Colton WRP Colton &
RHWC 10.4 5 Conveyed to RIX
SBMWD WRP
SBMWD,
EVWD, Loma
Linda
33 21
Conveyed to RIX. Planned Tertiary
Treatment System will produce RW
for groundwater recharge
RIX WWTP Colton WRP &
SBWRP 40 28 100% Discharged to SAR
Riverside RWQCP Riverside 46 25.3
Non-potable reuse for irrigation
(200 AF) Remaining discharged to
SAR
Redlands WWTF Redlands 16.2 6
Non-potable reuse for Irrigation
and Industrial (3,032 AF)
Remaining discharged to onsite
disposal ponds (3,254 AF)
YVWD WRWRF YVWD 8 3.8
Non-potable reuse for irrigation
Remaining discharged to San
Timoteo Creek
Groundwater recharge (planned)
City of Beaumont WWTP Beaumont 4 3.6
Discharged to Cooper’s Creek and
remaining reused for non-potable
irrigation
EVWD SNRC EVWD 8 - Groundwater recharge (beginning
in 2022)
IEUA Regional Treatment Plant
No. 42
Fontana,
WVWD, other
IEUA customers
- - Non-potable reuse
Groundwater Recharge
1. Flows for the Lytle Creek North WRP and City of Beaumont WWTP are 2015 annual average flow from 2015 Regional Recycled Water Concept Study
2. RP-4 is outside the Region but provides RW to FWC
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3.4.1.2 Recycled Water Programs
Despite the likelihood that WWTP discharges will increase in the future, not all of the treated water may enter the SAR. Several cities and utilities are in the process of developing plans to recycle water for non-potable uses, which could decrease discharges to the river. Valley District contracted with the City of San Bernardino and the City of Colton to ensure that the RIX facility continues to release quantities of treated effluent to the SAR adequate to fulfill Valley District service area’s obligation to provide 15,250 AF of baseflow each year at the Riverside Narrows as called for in the Orange County Judgment.
A number of other agencies have plans to improve recycled water production capacity and implement projects to use recycled water for non-potable uses in the future. Table 3-13 summarizes the proposed water recycling programs in the IRWM Region. Several agencies have constructed recycled water distribution systems or are in the process of planning and constructing recycled water distribution systems. These systems are discussed below.
Table 3-13: Upper Santa Ana River Water Agencies Recycling Water Programs
WATER AGENCY RECYCLING PLANT
PRODUCTION
CAPACITY DESCRIPTION
East Valley Water
District
Sterling Natural
Resource Center 10 MGD Construction of a tertiary plant to produce recycled water.
Fontana Water
Company
IEUA Regional treatment
Plant 4 5.4 MGD
Fontana Water Company has completed
constructing infrastructure to deliver recycled
water in its service area.
City of Redlands
Municipal Utilities and
Engineering Department
City of Redlands
WWTP 7.2 MGD Recycled water used for basin recharge,
irrigation, and industrial purposes.
Rialto City of Rialto Water
Treatment Plant 12.0 MGD
Recycled water used for landscape irrigation
on the I-10 and habitat. Additional non-
potable use planned.
Riverside Public Utilities
Riverside Regional
Water Quality Control
Plant
40 MGD Plans to implement the Riverside Parks and
Water Project as part of the HCP.
SBMWD Tertiary Treatment
System 5.0 MGD
Construction of a tertiary treatment system at
the existing San Bernardino Water
Reclamation Plant to recycle water for plant
use, landscape irrigation, and recharge.
Yucaipa Valley Water
District
Henry N. Wochholz
WWTP 6.7 MGD
Recycled water used for irrigation, in-stream
flow requirements and groundwater recharge
(planned)
SBMWD, City of Colton,
City of Loma Linda,
County of San
Bernardino, and East
Valley Water District
RIX 40 MGD
All the water from the RIX is currently
released into the Santa Ana River. The City of
San Bernardino and East Valley Water
District are currently developing recycled
water programs.
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WATER AGENCY RECYCLING PLANT
PRODUCTION
CAPACITY DESCRIPTION
BBARWA, BBCCSD,
BBLDWP, BBMWD BBARWA WWTP 2 MGD
All water from the BBARWA WWTP is
currently discharged outside the Region for
disposal. Replenish Big Bear is a proposed
project to upgrade the BBARWA WWTP to
produce recycled water for discharge to Big
Bear Lake to increase lake levels, sustain
habitat and retain the water in the Region.
3.4.1.2.1 Replenish Big Bear
In an effort to protect Big Bear Valley and the Region from the impacts of drought and variable precipitation, Big Bear Area Regional Wastewater Agency (BBARWA), Big Bear City Community Services District, City of Big Bear Lake Department of Water and Power, Big Bear Municipal Water District, and the Bear Valley Basin Groundwater Sustainability Agency have partnered to develop Replenish Big Bear, a recycled water project that will recover a local water resource currently discharged outside of the watershed. Replenish Big Bear will secure a reliable and sustainable local water supply, protect the local environment, and strengthen the tourism industry that drives the recreation-based economy for a small-disadvantaged community at the top of the Santa Ana River watershed in the San Bernardino National Forest.
Currently, all wastewater generated within Big Bear Valley is treated to secondary standards and disposed of outside the watershed. Replenish Big Bear will recover this lost resource by purifying the water using advanced treatment processes, creating a new drought-resistant source of water for beneficial use in the community. Specifically, Replenish Big Be ar includes construction of advanced treatment facility upgrades at the existing BBARWA wastewater treatment plant, more than 7 miles of pipeline for product water and brine, three pump stations, a groundwater recharge facility and monitoring wells.
Replenish Big Bear will provide the following regional and statewide benefits:
• Maintain and Diversify Water Supplies. High-quality water produced by Replenish Big Bear will sustain up to 20 percent of the Valley’s needed groundwater supply, the community’s sole source of drinking water, in times of drought. Currently, municipal wastewater is treated and pumped out of the Valley. Through this practice, 800 million gallons of water leaves the Big Bear Valley each year. Replenish Big Bear will allow us to keep this water in the community for recycling.
• Support Economic Development and Stability. Big Bear Valley is home to approximately 23,000 residents and is designated as a Disadvantaged and Severely Disadvantaged Community by the State of California Department of Water Resources. Recovering local water resources strengthens the ability to support a thriving tourism industry, that this small community depends greatly on and is an essential element of the local economy. Replenish 327
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Big Bear will enhance water levels in Big Bear Lake and other area water bodies, supporting year-round recreational activities, wildlife viewing, and scenic landscapes. • Protect and Enhance Natural Ecosystems. Big Bear Valley is rich in wildlife that is heavily responsive to local hydrologic conditions. Retaining local water within the watershed stabilizes and sustains year-round habitat for waterfowl and the high number of plant species known only to this area, including the largest population of wintering bald eagles in southern California and the federally-listed Unarmored Threespined Stickleback fish.
The project is currently in the preliminary design and permitting phase and this Community Project Funding request is critical for the project to move into implementation. Federal funding will enable the project team to leverage existing participating agency contributions and State funding to implement Replenish Big Bear.
Additional information about Replenish Big Bear can be found at www.replenishbigbear.com/.
Big Bear Lake
Photo Credit: Big Bear Municipal Water
District
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Sterling Natural Resource Center
EVWD is currently constructing a new water recycling facility called the Sterling Natural Resource Center (SNRC). SNRC, which is expected to be completed in 2022, will allow the District to treat wastewater to a point that it can be recharged into the Bunker Hill groundwater basin to supplement the groundwater supply. Initially, the facility will treat up to 8 million gallons per day and will be expandable to be able to treat ultimate buildout of approximately 10 million gallons per day.
EVWD has partnered with Valley District to maximize the regional benefit of the recycled water produced at SNRC to recharge the SBBA groundwater. Given the consistent need for groundwater replenishment compared to the potential uses for recycled water, there are currently no plans to use recycled water for any other purposes in the foreseeable future. For the purposes of this plan, projected recycled water supplies were estimated using the per capita wastewater flow projection methodology used in EVWD’s 2019 Sewer Master Plan, adjusted to align with the population projection in this UWMP, which are inclusive of long-term growth plus expected near term developments.
Sterling Natural Resource Center
under construction in 2021
Photo Credit: East Valley Water District
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Recycled Water Use for Fontana Water Company
Fontana Water Company is working cooperatively with the City of Fontana to design and construct the first phase of a recycled water program. Once recycled water becomes available and the necessary infrastructure is constructed, Fontana Water Company will be the purveyor of recycled water to those customers within its service area who can make use of such water. In the first phase of the recycled water program, Fontana Water Company will provide approximately 1,700 AF of recycled water to schools, parks, commercial customers, and Community Facilities Districts’ landscape irrigation locations in the southern portion of the City of Fontana. Ultimate build-out in Fontana Water Company’s service area will enable Fontana Water Company to provide approximately 6,000 AF of recycled water. Fontana Water Company supports the use of recycled water where its use is appropriate and where recycled water is available.
Recycled Water Use for City of Redlands
The City is a sewer agency that treats approximately 5.9 million gallons of wastewater daily as of 2020. The City’s Wastewater Treatment Plant (WWTP) has the capability of treating 9 million gallons a day (MGD) to a secondary level. Of that, 7.2 MGD can be treated to a Title 22- Recycled Water level.
The City utilizes all wastewater collected and treated at its WWTP in its service area for:
• Distribution to customers
• Percolation into Bunker Hill
Treated wastewater distributed to customers is tertiary treated, known as Title 22-Recycled Water. The City’s recycled water customers include Southern California Edison (SCE) Company, a landfill and recycled/non-potable water customers located in the 1350 pressure zone. SCE uses recycled water as cooling water at its Mountain View Power Plant and recycled/non-potable water customers use recycled water for irrigation when supply is available.
All remaining wastewater is treated to a secondary level and released into spreading basins located east of the WWTP for recharge back into Bunker Hill ground water basin. Based on 2020 volumes, approximately 1.6 mgd of treated wastewater was used as recycled water supply for customers, and 3.4 mgd was used for recharge. The remaining water was used within the WWTP or accounted for as losses through the process, meter inaccuracies or evaporation.
The expansion of the recycled water system is limited by its supply, as well as infrastructure development and the Title 22-Recycled Water permitting process. However, because the City requires new commercial development to provide dual metering for irrigation systems, to accommodate the use of recycled/non-potable water, all recycled water may be utilized for distribution to recycled/non-potable water customers in the 1350 zone and eventually the 1570 pressure zone, as demand and infrastructure increases. The City’s Capital Improvement Plan includes the design and construction of two recycled water reservoirs that will total up to a 330
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volume of 2,000,000 gallons of storage, a 1,500 gallons per minute booster pump station, and 9,400 linear feet of pipeline. Construction of these facilities will increase the use of recycled water in the 1350 and 1570 pressure zones by 826 AFY.
Recycled Water Use for City of Rialto and West Valley Water District The City of Rialto has facilities to provide the California Department of Transportation (Caltrans) with recycled water for 42,000 feet of landscape irrigation for Interstate-10. Caltrans has been using approximately 10 AFY. Currently, there are no other users of the recycled water.
Rialto plans to reduce the amount of treated effluent that is discharged from the Rialto Wastewater Treatment Plant into the Rialto Channel, which is a tributary to the Santa Ana River.
The reduction of flow would occur in two parts as infrastructure is constructed, demand for recycled water increases, and certain habitat modifications are implemented within the Rialto Channel. The City of Rialto would recycle/reuse the wastewater by transporting treated wastewater through a pipeline system to recycled water consumers within their service area for direct application.
WVWD has evaluated the feasibility of adding recycled water as a non-potable supply but would rely on the City of Rialto or San Bernardino County to provide the recycled water from their wastewater treatment facilities. In 2012, WVWD prepared a master plan to evaluate potential uses of recycled water within its service area. WVWD does not currently have a recycled water distribution system and is not pursuing recycled water use at this time because it is not cost effective to extend facilities from the wastewater treatment plants to the locations of potential use.
Recycled Water Use for City of Riverside
The City of Riverside Public Works Department operates and maintains the Riverside Regional Water Quality Control Plant (RRWQCP). The daily average wastewater inflow to the RRWQCP is 34 mgd. Construction for an upgrade is currently underway to increase treatment plant capacity to 46 mgd, with the final plant capacity to reach 52 mgd by 2024. The service area of the RRWQCP extends beyond the Riverside Public Utilities service area to include the areas served by Jurupa, Rubidoux, and Edgemont Community Services District. Tertiary-treated effluent (recycled water) is discharged into the SAR.
The SWRCB approved Order WR 2008-0024 in May 2008, in which RRWQCP is required to discharge 25,000 AFY, compared to previous minimum discharge requirements of 15,250 AFY per the 1968 Prado Settlement.
This order changed the place of use and purpose of use of a portion of the treated wastewater discharged into the SAR requested through Wastewater Change Petition WW-0045 as follows:
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• Change of Place of Use: The Order expanded the place of use to include areas within the City’s limits, the City’s water service area boundary, and within the boundary of the Jurupa Area Plan to reflect diversion of treated wastewater to recycled water use sites. The point of discharge to the SAR remained the same.
• Change of Purpose of Use: The Order modified the purpose of recycled water use to include municipal, industrial, and agricultural purposes.
Recycled Water Use for San Bernardino Municipal Water Department SBMWD is developing the Tertiary Treatment System (TTS) Project a recycled water project which will be a Title 22-compliant tertiary treatment facility that will supply recycled water for:
• Operational needs within the plant, eliminating in-plant use of groundwater and onsite groundwater storage
• Groundwater recharge of the Bunker Hill Groundwater Basin, which is SBMWD’s sole source of water supply
• Supplying potential future recycled water customers.
The TTS project location is sited east of the Unit 1 secondary clarifiers, adjacent to East Twin Creek. The design includes a new pump station and pipelines to convey secondary effluent to new filtration and disinfection processes.
After treatment, the tertiary recycled water will be stored in a rehabilitated existing reservoir that currently stores groundwater. Production of tertiary disinfected recycled water from the TTS will be phased with provisions to allow future expansion of up to 5 mgd (AECOM, 2019) using water in excess of the discharge commitments to the Santa Ana River. The TTS is in the final design phase and is expected to be operational in 2021.
The proposed effluent discharge reduction would occur in two parts corresponding to Phases 1 and 3 of the HCP implementation. In Phase 1 the Water Department will reduce flows from the RIX facility to the Santa Ana River from the baseline of 41.2 cfs (22.2 mgd) to 28 cfs (15.1 mgd).
In Phase 3 of RIX, effluent reduction could occur if the HCP demonstrates that the success criteria for mitigation actions in this HCP for Santa Ana sucker are being met or exceeded. If the success criteria are not met until Phase 4, then implementation would be delayed until Phase 4 of the HCP. In this phase the RIX effluent discharge could be reduced to a minimum of 16,651 afy/23 cfs/12.4 mgd.
Recycled Water Use for Yucaipa Valley Water District
YVWD’s existing recycled water system went into operation in 2002. The system currently includes 22 miles of pipeline, approximately 460 service connections, and 5 reservoirs capable of storing 12 million gallons (36.8 AF) of water.
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Due to an increasing demand of recycled water, YVWD will continue expanding the recycled water system. YVWD will be constructing a Regional Recycled Water Conveyance System to the southernmost service area boundary. This extension would involve the construction of a 24” recycled water pipeline, approximately 18,500 linear feet (3.5 miles) through the City of Calimesa. The purpose of the pipeline is to provide recycled water service to customers residing within the newly developed dual-plumbed community in the City of Calimesa.
Recycled water is currently used to provide about 16 percent of Yucaipa Valley Water District’s overall water demands. A significant portion of YVWD’s projected future water demands will be met with the use of recycled water for irrigation of golf courses, parks, landscape areas and front-/rear-yard irrigation of residential dwellings.
To serve the projected water demands, YVWD has implemented an extensive dual water distribution system. The dual water system includes a drinking water conveyance system to convey potable water to customers and a separate recycled water distribution system to convey recycled water to customers.
As water becomes an increasingly precious commodity, Yucaipa Valley Water District is stepping up its recycling efforts so that more water can be reused on golf courses, school grounds, roadside medians and for other landscaping purposes -- even the front and rear yards of new homes.
YVWD has already initiated a significant recycled water program within their service area for landscape irrigation. Future homes in the YVWD service area will be constructed with drinking water for interior use and recycled water for exterior use. These improvements will significantly reduce the GPCD for the community and provide the framework for a robust, sustainable and water conscientious community.
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3.5 Transfers, Exchanges, and Groundwater Banking Programs
3.5.1 Transfers and Exchanges
Transfers and exchanges are discussed in chapters for each individual agency.
3.5.2 Groundwater Banking Programs
As stated previously, storing water in local groundwater basins during wet years for later use during droughts is one of the primary management strategies in the USARW IRWMP.
Valley District has been conducting groundwater recharge activities in the SBBA since 1972. The San Bernardino Valley Water Conservation District and its predecessors have conducted water conservation (groundwater recharge) activities since 1912 in areas that overlie the SBBA.
The USARW IRWMP evaluated additional conjunctive use scenarios and concluded that they were feasible. Conjunctive use projects currently under development in the Valley District Service area are described in Section 3.6.2.
Phase 1A Enhanced Recharge Project
Photo Credit: San Bernardino Valley Water
Conservation District
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3.6 Planned Water Supply Projects and Programs
The USARW has collaborated to manage the region’s unique water supply, water quality, flood, and habitat challenges. These challenges are key considerations in the implementation of new water supply projects and are reflected in the goals of the USARW IRWMP.
3.6.1 Recycled Water
Planned recycled water projects are described in Section 3.4.
3.6.2 Conjunctive Use Projects
One of the foundational water management strategies in the USARW IRWMP is conjunctive use which has been generally described as using our groundwater basins to store water that is available in wet years so that it is available to be pumped out during dry years (dry year yield).
Groundwater modeling for the IRWMP concluded that conjunctive use is feasible up to certain limits.
In February 2012, the BTAC recommended a cumulative total of 40,000 acre-feet per year of dry year yield. This capacity represents an efficient, initial project size with the possibility for expansion, given modeling to support it.
The five regional water agencies in the Santa Ana River Watershed have identified a watershed scale project, the Santa Ana River Conservation and Conjunctive Use Program (SARCCUP), a cooperative program with, Metropolitan and other agencies in the Santa Ana Watershed to store imported water during wet years for use during dry years.
The group includes representatives from the following regional water agencies:
• Valley District
• Western
• Eastern Municipal Water District
• IEUA
• Orange County Water District
The program goals of SARCCUP include:
• Providing watershed-wide benefits based upon regional collaboration • Creating significant new dry-year yield
• Increasing the resiliency and reliability of the water supply
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SARCCUP includes four separate groundwater banks located in different groundwater basins within the Santa Ana Watershed, including a comprehensive conjunctive use program in the SBB. SARCCUP will provide water for the SBB and the companion project, Bunker Hill Conjunctive Use Program (BHCUP) provides the extraction facilities for the SBB.
Conjunctive use will benefit the retail water agencies with wells in the Region by increasing water levels and reducing pumping costs. The portion of these projects ultimately available to agencies in the Valley District service area is up to 88,500 acre-feet of storage and up to 29,500 acre-feet of dry year yield.
3.6.3 Groundwater Recharge
One of the water supply strategies of the region is to recharge groundwater through spreading of imported water or through direct use of imported water which results in in-lieu recharge, managing floods and increasing stormwater recharge, and percolating recycled water. The region utilizes multiple spreading basins to recharge imported water and excess surface water, percolates effluent from multiple wastewater treatment facilities, and receives some recharge through percolation of stormwater. Proposed new recharge projects under development are shown in Table 3-14. In addition to these projects, local flood control districts are repairing and improving existing flood control channels and basins to reduce the velocity of water and allow additional groundwater recharge.
A goal of the USARW IRWMP is to balance flood management and increase stormwater recharge.
Stormwater management has been an ongoing challenge in the USARW Region and flood control facilities, such as detention basins, have provided much needed control of these flows.
While conveying flood water safely through the upper SAR watershed is of critical importance, detaining runoff for recharge is also desirable. The region’s groundwater managers are working with flood control agencies to optimize the use of these flood control facilities to increase the recharge of stormwater into the groundwater basin. The goal is to strike a balance between flood control and recharge that will ensure protection from flooding, while providing additional supplies to meet growing future demands and to supplement these supplies during drought years. Valley District has had an agreement with SBCFCD since 1972 which allows Valley District to recharge water in flood control detention basins. The two agencies are currently working on a replacement agreement that will continue to allow Valley District to use flood control basins for recharge when they are not needed for flood control. 336
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Table 3-14: Planned Groundwater Recharge Projects
PROJECT NAME AGENCY BASIN
IMPLEMENTATION
YEAR/PHASE
ESTIMATED
YIELD (AFY)
WATER
RECHARGED
SAR TRIBUTARY ACTIVE RECHARGE PROJECTS
City Creek Basins Valley District, Western,
RPU, SBVWCD Bunker Hill Planning 4,660 Stormwater
Mill Creek Basins Valley District, Western,
RPU, SBVWCD Bunker Hill Planning 940 Stormwater
Waterman Creek
Basins
Valley District, Western,
RPU, SBVWCD Bunker Hill Planning 1,420 Stormwater
East Twin Creek
Basins
Valley District, Western,
RPU, SBVWCD Bunker Hill Planning 3,310 Stormwater
Plunge Creek and
Oak Creek
Valley District, Western,
RPU, SBVWCD Bunker Hill Planning 3,110 Stormwater
Cable Creek Basins Valley District, Western,
RPU, SBCFCD Bunker Hill Planning 2,420 Stormwater
Lytle Creek Basin Valley District, Western,
RPU Bunker Hill Planning 3,620 Stormwater
Cajon – Vulcan
Basins Valley District, SBMWD Bunker Hill Planning 490 Stormwater Lytle – Cajon Basin Valley District, Western,
RPU Bunker Hill Planning 2,910 Stormwater
Devil Creek Basin Valley District, SBMWD Bunker Hill Planning 1,910 Stormwater
ADDITIONAL RECHARGE PROJECTS
Enhanced Recharge
in Santa Ana River
Spreading Basins,
Phases 1B & 1C
Valley District, Western,
SBVWCD Bunker Hill 2022 N/A
Recharge in Cactus
Basins Valley District, SBCFCD Rialto-
Colton 2022 N/A Imported Water
Riverside North
Aquifer Storage &
Recovery Project
Valley District, Western,
RPU
Riverside-
Arlington Planning 6,000
Victoria Basin
Recharge Western Riverside-
Arlington 2020 1,800 Stormwater
Riverside Basin
Recharge Project RPU Riverside-
Arlington Planning N/A Stormwater,
Imported water
Vulcan Mining
Groundwater
Recharge Basin
Valley District, SBMWD Bunker Hill Planning N/A Imported water Calimesa Recharge
Basin
South Mesa Water
Company Yucaipa 2022 N/A Stormwater
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PROJECT NAME AGENCY BASIN
IMPLEMENTATION
YEAR/PHASE
ESTIMATED
YIELD (AFY)
WATER
RECHARGED
Calimesa Aquifer
Storage and
Recovery
Yucaipa Valley Water
District Yucaipa 2022 N/A Recycled Water
Sterling Natural
Resource Center EVWD Bunker Hill 2022 8,200 Recycled Water Tertiary Treatment
System SBMWD Bunker Hill 2022 5,600 Recycled Water
Sources: Upper SAR HCP October 2020 Stakeholder Draft, Geoscience Integrated SAR Model results for Active Recharge projects and project information submitted by Plan participants in the Call for Projects (see Chapter 7)
3.6.3.1 Santa Ana River Tributary Active Recharge Project The Active Recharge Project is envisioned to help better manage surface water available to the SBBA.
In 2015, a stormwater flow and capture analysis were performed to determine:
• The volume of surface water which has historically migrated out of the SBBA, • The volume of surface water that is generated internally within the SBBA as the result of historical and on-going urbanization of the SBBA,
• The quantity of stormwater that is generated by the major tributary creeks to the Santa Ana River,
• The location and preliminary (conceptual) designs of potential new stormwater capture facilities that could maximize the capture and recharge of surface water flows, • Potential environmental constraints for each of the selected tributaries, • Potential modifications to existing retention basins and spreading grounds to further increase surface water capture and recharge, and
• The volume of potential additional recharge to the SBBA and the effect to surface water volumes leaving the SBBA that will occur as a result of implementation of an active recharge project (this remaining flow out of the SBBA would be available for recharge in the proposed Riverside North Aquifer Storage and Recovery Project; see Section 3.6.3.4).
The study included preparation of proposed conceptual designs for new and improved existing surface water capture and recharge facilities in areas of the tributary creeks having the greatest stormwater flows and the least number of environmental constraints. The project stakeholders are currently working to refine the conceptual designs. SBVMWD and SBVWCD entered into a Joint Active Recharge Partnership Agreement and SBVWCD and SBCFCD recently signed a planning MOU for the ARTP-E projects.
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3.6.3.2 Santa Ana River Enhanced Recharge Project
The Enhanced Recharge Project is located on the Santa Ana River and will divert up to 500 cubic feet per second (cfs) and up to approximately 80,000 AFY. Water will be temporarily captured at the Seven Oaks Dam and diverted flows will flow to recharge basins for recharge into the SBBA or be delivered for direct use through the first phase of the Plunge Pool Pipeline.
This project is estimated to provide approximately 7,643 acre-feet per year of new water to the region.
3.6.3.3 Cactus Basin Recharge
Valley District is working cooperatively with the San Bernardino County Flood Control District (Flood Control) to recharge SWP supplemental water in the Cactus Basins, which would recharge high quality water into the Rialto-Colton sub basin. The project includes the construction of new basins 3 and 3A, which are being built for flood control. Basin development will include the construction of a bypass pipeline to manage flood flows. To optimize the joint use of these basins for flood control, the recharge is planned to occur during the dry season, from April to October.
3.6.3.4 Riverside North Aquifer Storage and Recovery
The Riverside North Aquifer Storage and Recovery Project is a proposed storm water capture project located in the southern portion of the City of Colton and north of the City of Grand Terrace. The project consists of proposed in-channel and off-channel recharge. The proposed off-channel recharge facility location is along the west side of the Santa Ana River and proposes the construction of up to eight individual recharge basins encompassing approximately 25 acres. The in-channel recharge basin proposes construction of an inflatable dam across the Santa Ana River channel, which can be raised and lowered depending on the amount of water flowing in the river.
This project is estimated to provide up to 6,000 acre-feet of new water per year. The in-channel and off-channel water captured will be recharged into the Riverside North sub basin and a portion of the retained water will be diverted to the Riverside Canal pipeline for direct use.
3.6.3.5 Arlington Basin Water Quality Improvement
In 2019, Western completed construction of the Victoria Recharge Basin near the intersection of Victoria Avenue and Jackson Street in Riverside (Victoria site). This site will be used to replenish the Riverside-Arlington groundwater basin with up to 1,800 acre-feet of water per year. The project benefits include:
• The Victoria Recharge Basin increases groundwater storage through the capture and recharge of stormwater that would otherwise be lost.
• The project improves groundwater quality and water management of the Arlington Basin, increasing the groundwater supply enabling the Arlington Desalter to operate at capacity. 339
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• The project will provide a local water source to help decrease the region’s reliance on imported water from Northern California.
• Locally-sourced water provides system reliability in the event of imported water disruption.
At this time, there are no other recharge sites planned; however, Western continues to explore additional recharge sites to continue to increase local supply reliability
3.6.3.6 Riverside Basin
RPU plans to construct new recharge basins and/or repurpose existing retention basins within the northern part of the Riverside Basin. These basins will be used to recharge the Riverside Groundwater Basin and therefore increase the operating yield from the basin. The source of the water will be onsite stormwater, imported water, and/or water from the Riverside North Aquifer Storage and Recovery Project via the existing Riverside Canal and associated delivery systems, if necessary.
3.6.3.7 Vulcan Mining Groundwater Recharge
The Vulcan Mining Groundwater Recharge Basins are located east of Lytle Creek, northerly of Devil Creek Channel, and westerly of Cajon Boulevard within existing aggregate mining pits owned by Vulcan Materials Company. SBMWD proposes to develop groundwater recharge facilities within the basins in conjunction with Vulcan Materials Company for recharge of water supplied through the SWP, which would include construction of an SWP turnout, a metering facility, and the placement of a pipeline. The project will not include water supply from surface water diversions.
3.6.3.8 Calimesa Recharge Basin
The Calimesa Recharge Basin Project is a proposed project by the South Mesa Water Company in cooperation with the City of Calimesa and Riverside County Flood Control and Water Conservation District. The City and Flood Control District are currently designing a road improvement project along County Line Road between Park Avenue and Bryant Street, including just under 1 mile of infrastructure enhancements for traffic control. Additionally, the project will entail construction of the Calimesa Recharge Basin on an adjacent 4-acre parcel to collect stormwater captured from the improved roadway and detain it for percolation into the Yucaipa groundwater basin.
3.6.3.9 Calimesa Aquifer Storage and Recovery
The Yucaipa Valley Water District will be installing four injection wells and two extraction wells as an Aquifer Storage and Recovery Facility in the City of Calimesa. This system will provide for the recharge of fully treated (reverse osmosis) recycled water to provide additional drinking water supplies and to meet peak recycled water demands by reversing the flow of water from the injection wells.
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3.6.3.10 Sterling Natural Resource Center
The Sterling Natural Resource Center (SNRC) is a wastewater reclamation facility under construction and scheduled to begin treating raw wastewater from East Valley Water District in 2022. SNRC will treat wastewater to tertiary levels and discharge effluent via pipeline to the proposed Weaver groundwater recharge basin. SNRC is estimated to recharge 8,200 AFY to the Bunker Hill sub basin when it comes online in 2022, and recharge will likely increase over time as the EVWD population grows and more wastewater is treated at the facility.
3.6.3.11 Tertiary Treatment System
The Tertiary Treatment System project is an upgrade to the City of San Bernardino Water Reclamation Plant (WRP). The project includes upgrading treatment processes to produce tertiary effluent at WRP and changing the location of effluent discharge from the Santa Ana River to the Weaver groundwater recharge basins via pipeline. The Tertiary Treatment System is estimated to initially recharge 2,200 AFY to the Bunker Hill sub basin starting in 2022 and will increase to 10,000 AFY by 2040 as the improvements are phased in and the City of San Bernardino population grows.
3.7 Development of Desalination
3.7.1 Opportunities for Brackish Water and/or Groundwater Desalination
Desalination, or desalting, is a process to create drinking water from water containing higher salt levels. Desalination can use a thermal distillation process or a membrane process (such as electrodialysis or reverse osmosis). All desalination processes produce a brine waste stream that must be disposed. Brackish groundwater desalting is not currently needed in the San Bernardino Valley.
Although elevated salts are currently not a concern in the San Bernardino Valley, elevated salts are an issue for retailers that overlie the San Timoteo Groundwater Basin where agencies in this basin are considering implementing desalter operations. The area is fortunate to have a Brine Line which can transport non-reclaimable waste, by gravity, from the City of San Bernardino Wastewater Reclamation Plant to the Orange County Sanitation District’s treatment plant.
3.7.2 Opportunities for Seawater Desalination
Because the San Bernardino Valley is an inland area and has developed less costly management strategies to achieve a reliable water supply, the region is not pursuing this option.
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3.8 Local Water Management
3.8.1 Western Judgement
The Western Judgment, entered simultaneously with the Orange County Judgment, proportioned the water resources within the upper Santa Ana River watershed amongst the residents of the watershed.
The Orange County Judgment ensures minimum flows in the Santa Ana River to Orange County and the Western Judgment generally provides for:
• A determination of safe yield of the SBBA at 232,100 AFY. • The amount (64,862 AF) of safe yield from the SBBA by for the plaintiff parties (parties in Riverside County). This is equal to 27.95 percent of safe yield. • An obligation of the non-plaintiff parties (entities in the Valley District service area) to provide replenishment anytime their cumulative extractions exceed their cumulative amount of safe yield;
• An obligation of Western to replenish the Colton Basin Area and the Riverside North Basins if extractions for use in Riverside County in aggregate exceed 3,381 AF and 21,085 AF respectively; and
• An obligation of Valley District to replenish the Colton Basin Area and Riverside North Basin Areas if water levels are lower than 822.04 MSL in specified index wells.
The Judgments establish a Watermaster to be responsible, on behalf of the numerous parties bound thereby, for ensuring implementation of the judgments. The Watermaster for the Western Judgment is made up of one representative from Valley District and Western. Valley District and Western represent the retail water agencies that pump from the groundwater basins.
The Western Judgment contemplates that the parties will develop “new conservation” which is defined as any increase in replenishment from natural precipitation which results from operation of works and facilities not in existence as of 1969, other than works installed to offset losses from flood control channelization. The Western Judgment specifies that the parties to the Judgment have the right to participate in any new conservation projects, provided they pay the appropriate share of the cost. The net effect of new conservation is an increase in safe yield for both the Plaintiffs and non-Plaintiffs. A copy of the Western Judgment is provided in Part 3 Appendix B.
In 2013, both the Plaintiffs and Non-Plaintiffs agreed to participate in the cost to capture some of the water that historically flowed to the ocean. This New Conservation was due to the construction and operation of the Seven Oaks Dam. The 2015 Annual Report for the Western- San Bernardino Annual Report effectively increases the safe yield for both Parties as shown in Table 3-15.
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Table 3-15. Adjusted SBBA Rights Due to New Conservation Allocation
PARTIES PERCENTAGE
SAFE YIELD
ALLOCATION
(AF)
NEW
CONSERVATIO
N ALLOCATION
(AF)
ADJUSTED
RIGHT (AF)
Non- Plaintiffs 72.05% 167,238 5,507 172,745
Plaintiffs 27.95% 64,862 2,136 66,998
City of Riverside 52,199 1,719 53,918
Riverside Highland Water Company 4,294 141 4,435
AM and MD Water Company 7,833 258 8,091
Regents of the University of California 536 18 554
TOTAL SUM OF EXTRACTIONS 100% 232,100 7,643 239,743
3.8.2 Orange County Judgement
In 1963, the Orange County Water District (OCWD) filed suit against substantially all water users in the area tributary to Prado Dam seeking adjudication of water rights on the Santa Ana River. The litigation ultimately involved over 4,000 served water users and water agencies, the four largest of which were OCWD, Valley District, Western, and the Chino Basin Municipal Water District (now the Inland Empire Utilities Agency). Given the magnitude of the potential litigation, these four districts and other parties developed a settlement that was approved by the Orange County Superior Court in a stipulated judgment entered on April 17, 1969, Orange County Water District v. City of Chino et al., Case No. 117628 (Orange County Judgment). The Orange County Judgment imposes a physical solution that requires parties in the upper Santa Ana River watershed to deliver a minimum quantity of water to points downstream including Riverside Narrows and Prado Dam. A provision of the Orange County Judgment related to conservation establishes that, once the flow requirements are met, the Upper Area parties “may engage in unlimited water conservation activities, including spreading, impounding, and other methods, in the area above Prado Reservoir.” The Orange County Judgment is administered by the five-member Santa Ana River Watermaster that reports annually to the court and the four representative agencies. Valley District, the Inland Empire Utilities Agency, and Western nominate one member each to the Watermaster, OCWD nominates two members, and members are appointed by the court. A copy of the Orange County Judgment is provided in Part 3 Appendix B.
3.8.3 1961 Rialto Basin Decree
The Rialto Basin Decree was described previously in Section 2.2.2. A copy of the Rialto Basin Decree is provided in Part 3 Appendix B.
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3.8.4 Seven Oaks Accord
On July 21, 2004, Valley District, Western, the City of Redlands, EVWD, Bear Valley Mutual Water Company, Lugonia Water Company, North Fork Water Company, and Redlands Water Company signed a settlement agreement known as the Seven Oaks Accord (Accord). The Accord calls for Valley District and Western to recognize the prior rights of the water users for a portion of the natural flow of the Santa Ana River. In exchange, the water users agree to withdraw their protests to the water right application submitted by Valley District on behalf of itself and Western. All the parties to the Accord have agreed to support the granting of other necessary permits to allow Valley District and Western to divert water from the Santa Ana River.
By means of the Accord, Valley District agreed to modify its water right applications to incorporate implementation of the Accord. Additionally, the Accord requires Valley District and Western to develop a groundwater spreading program in cooperation with other parties, “that is intended to maintain groundwater levels at the specified wells at relatively constant levels, in spite of the inevitable fluctuations due to hydrologic variation.” In response, local agencies included groundwater management in the USARW IRWMP and have collectively prepared the Basin Technical Advisory Committee Regional Water Management Plan annually since 2008.
3.8.5 SBBA Groundwater Sustainability Council
In 2018, Valley District, the City of Colton, City of Rialto, SBMWD, City of Loma Linda, EVWD, Conservation District, Fontana Water Company, WVWD, YVWD, BVMWC, and Loma Linda University entered into the San Bernardino Basin Area Groundwater Council Framework Agreement to form the SBBA Groundwater Sustainability Council (SBBA GC). The City of Redlands joined the SBBA GC in 2021. The purpose of the SBBA GC is to coordinate and implement groundwater management activities in the Bunker Hill Sub-basin and achieve groundwater sustainability throughout the basin.
The primary function of the SBBA GC is to purchase and recharge imported water into the SBB.
The SBBA GC collectively determines the amount of water to purchase and recharge. The current sustainability goal is 28,823 AFY which corresponds to the estimated 2040 need for SWP as determined by the last version of the RUWMP. The SBBA GC created an Equitable Allocation Model (EAM) to proportion each member’s recharge obligation. The EAM takes into consideration an agencies’ investments in water conservation and other supplies and infrastructure, including recycled water supplies and surface water treatment plants.
3.8.6 Yucaipa Sustainable Groundwater Management Agency In July 2017, Valley District, the City of Calimesa, City of Redlands, San Gorgonio Pass Water Agency (Pass), South Mesa Water Company, South Mountain Water Company, Western Heights Water Company, City of Yucaipa, and Yucaipa Valley Water District formed the Yucaipa Sustainable Groundwater Management Agency (Yucaipa-SGMA) under the Sustainable 344
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Groundwater Management Act (SGMA). The Yucaipa-SGMA is currently developing a Groundwater Sustainability Plan (GSP) that is required to be completed by January 31, 2022.
The Yucaipa GSP will evaluate supplies and demands on the basin, establish sustainability goals including recharge obligations to address any shortages between supplies and demands, identify, and evaluate management actions and impacts of the GSP, and establish a framework for how the basin will be managed collaboratively by all entities who rely upon the basin.
The Yucaipa-SGMA GSP is under development and was not completed by the time this plan was published, however, some findings from the GSP development process have informed supply and demand projections for entities who are included in this plan.
3.8.7 Settlement Agreement with Conservation District
Valley District, Western, and the San Bernardino Valley Water Conservation District entered into a settlement agreement on August 9, 2005 whereby the agencies will work cooperatively to develop an annual groundwater management plan. Since both parties are members of the BTAC, this requirement is being met by the BTAC’s Regional Water Management Plan, which largely establishes a recharge threshold to ensure recharge activities do not cause liquefaction or move contamination plumes.
3.8.8 MOUs with Flood Control
The Planning Memorandum of understanding (MOU) by and between the San Bernardino County Flood Control District (SBCFCD) and San Bernardino Valley Water Conservation District (Conservation District) serves as an agreement for stormwater recharge at various flood control facilities. Under this MOU, the Conservation District identified SBCFCD facilities where stormwater may be diverted for recharge purposes, granted that diversion does not impact SBCFCD’s facilities functionality and purpose to maintain protection from floods. At this time, the potential for stormwater recharge using SBCFCD facilities is preliminary, and future studies pertaining to eligible facilities, the amount and quality of storm water flows for recharge, the location and capacity of SBCFCD facilities, recharge impacts to groundwater levels, migration of contaminant plumes, sand and gravel extraction or other land uses in the vicinity, subsidence protection, endangered and sensitive species habitat preservation, and any other concerns will need to be evaluated (San Bernardino County Flood Control District, January 2021). This MOU is for planning purposes only and any future projects that may use SBCFCD facilities will be subject to a separate water spreading agreement between both parties and CEQA.
3.8.9 Exchange Plan
On May 3, 1976, the San Bernardino Valley Water Conservation District (Conservation District), Valley District, Bear Valley Mutual Water Company (BVMWC), City of Redlands, Crafton Water 345
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Company, EVWD, Lugonia Water Company, North Fork Water Company (now owned by EVWD), Redlands Water Company, and YVWD entered into the Santa Ana River – Mill Creek Cooperative Water Project Agreement (Exchange Plan). The Exchange Plan provided a way for Valley District to provide SWP water to the Yucaipa area, by exchange, before Valley District had a pipeline to deliver SWP water directly to Yucaipa. Since the construction of the State Water Project East Branch Extension and the Crafton Hills Pump Station, state water deliveries can be made directly to Yucaipa so that Valley District no longer requires the Exchange Plan .
In 2019, the parties to the Exchange Plan began the process of reviewing the plan to determine if there may be a way(s) to amend the agreement that may help the region overcome issues like varying surface water quality, or an outage on the State Water Project. The proposed amendments to the Exchange Plan are under legal review at the time this plan was completed.
3.8.10 1996 Agreement with Big Bear Municipal Water District Bear Valley Mutual Water Company constructed the original Bear Valley Dam in 1884 to create Big Bear Lake as a storage reservoir for their customers, downstream farmers. In 1964, the residents of Big Bear Lake formed the Big Bear Municipal Water District (Big Bear Municipal) in an effort to eliminate Lake releases to Bear Valley Mutual so that the lake level would remain high for recreational use and tourism. After more than a decade of litigation, a Judgment was executed in 1977 which reduced the amount of Lake releases to Bear Valley Mutual. Under the terms of this Judgment, Big Bear Municipal purchased from Bear Valley Mutual the lake bottom, Bear Valley Dam, and the right to utilize and manage the surface of Big Bear Lake for recreation and wildlife. In return, deliveries to Bear Valley Mutual were capped at a total of 65,000 AF in any ten-year period. These deliveries can be made in the form of Lake releases or can be provided from other sources “in-lieu” of Lake releases (in-lieu deliveries). In-lieu deliveries to Bear Valley Mutual are preferable to Big Bear Municipal since they do not result in water being removed from the lake.
In 1996, Big Bear Municipal Water District entered into a water purchase agreement with Valley District that reduces the amount of water BBMWD must release from Big Bear Lake. For an annual payment to Valley District, Valley District provides SWP water for the downstream water needs that would have historically been met by lake releases whenever the Lake is at specified levels. Valley District may also provide water from other sources when the SWP supply is limited. This historic agreement helped Big Bear Municipal achieve its mission of Lake level stabilization for recreation while providing Bear Valley Mutual with the water it needs for its customers. Under the terms of the Agreement, Bear Valley Mutual may request any amount of delivery for a given year, provided that the total of all their requested deliveries do not exceed 65,000 AF in any ten-year period. Bear Valley Mutual typically limits its request to no more than the ten-year average, or 6,500 AFY.
The Judgment directed the in-lieu water program be monitored through a series of accounts that are managed by the Big Bear Watermaster Committee. The three-member committee consists 346
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of one representative from each of the three member agencies: Big Bear Municipal Water District, Bear Valley Mutual Water Company and San Bernardino Valley Water Conservation District. This is a committee whose sole responsibility is to monitor the “physical solution” set forth in the Judgment. The basic premise behind the physical solution is the comparison of Big Bear Municipal’s actual Lake management versus Bear Valley Mutual’ s historic management.
Big Bear Municipal is then responsible for making up any net groundwater deficiency in the San Bernardino basin which may occur as a result of maintaining a higher Lake level than would have occurred under Bear Valley Mutual’ s historic operations. The amount of the deficiency or surplus is maintained in the basin make-up water account (commonly referred to as “basin compensation account”). A number of other accounting mechanisms are in place to calculate totals for Lake releases, inflow, spills, evaporation, wastewater export and other related data.
An annual Watermaster report is prepared documenting the annual accounting procedures.
3.8.11 Annual Regional Water Management Plan
The BTAC was formed by the first IRWMP to implement the IRWMP and provide a forum to discuss technical issues regarding water management. The BTAC is primarily made up of water agencies that pump from the groundwater basins within the Valley District service area but is open to others who want to participate. BTAC works cooperatively and strives to make decisions by consensus. Currently, BTAC meets quarterly.
Each year, BTAC develops the Regional Water Management Plan that is considered by the two agencies that make up the Western Watermaster: Valley District and Western Municipal Water District. The plan generally establishes a recharge threshold to ensure water levels do not increase liquefaction potential or move contamination plumes The latest version of the BTAC Regional Water Management Plan is available at http://www.sbvmwd.com/about-us/local-water-conditions.
3.8.12 Groundwater Recharge Programs
In addition to the ongoing recharge operations throughout the Valley District service area, this section describes new recharge projects that are currently being developed.
3.8.12.1 Cactus Basin Recharge
Valley District is working cooperatively with the San Bernardino County Flood Control District (Flood Control) to recharge SWP supplemental water in the Cactus Basins, which would recharge high quality water into the Rialto-Colton sub basin. The project includes the construction of new basins 3 and 3A, which are being built for flood control. Basin development will include the construction of a bypass pipeline to manage flood flows. To optimize the joint use of these basins for flood control, the recharge is planned to occur during the dry-season, from April to October.
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3.9 Water Quality
3.9.1 Imported Water Quality
DWR has conducted water quality monitoring for the SWP since 1968. Initially, this program sought to monitor eutrophication (an increase in chemical nutrients) and salinity in the SWP.
Over time, the water quality program expanded to include parameters of concern for drinking water, recreation, and wildlife. Water quality samples are collected at regular intervals throughout the year for chemical, physical, and biological parameters. The SWP water has moderate total organic carbon levels, resulting in higher disinfection byproduct (DBP) formation, and also has some taste and odor causing compounds. Real time data and forecasting for SWP water quality is available on DWR’s website at
https://water.ca.gov/Programs/Environmental-Services/Water-Quality-Monitoring-And- Assessment/RTDF-Summary.
The Valley District service area of the IRWM region imports water through the SWP which is Sierra snow melt with consistently low TDS levels of 200 to 300 mg/L (DWR 2003a) except during periods of drought, flood events, reservoir management practices, and salt input from local streams.
Water is imported into the Western service area of the IRWM Region from the Colorado River via the Colorado River Aqueduct (CRA), owned and operated by Metropolitan, and from Northern California via SWP facilities. The TDS level in the CRA water averages approximately 700 mg/L and, during drought years, can increase to above 900 mg/L (Metropolitan and USBR 1999). Salinity projections for wet year conditions show TDS values between 650 and 800 mg/L (Metropolitan and USBR 1999).
In order to protect against any water quality impacts from imported water, the City of Corona, City of Riverside, Eastern Metropolitan Water District, Elsinore Valley Municipal Water District, Orange County Water District, Valley District, San Gorgonio Pass Water Agency, and Western (Recharge Parties) entered into the “Cooperative Agreement to Protect Water Quality and Encourage the Conjunctive Uses of Imported Water in the Santa Ana River Basin” with the SARWQCB in 2007. The initial term of the agreement was 10 years, and it was recently extended to January 18, 2028.
This order states that long-term conjunctive use of groundwater in the Region requires that the quality of water in groundwater basins in the region be managed to meet the water quality objectives for nitrogen and TDS (collectively, the Salinity Objectives) adopted by the SARWQCB in the 1995 Water Quality Control Plan for the Santa Ana River Basin, as amended in 2004 by R8- 2004-0001 (Basin Plan).
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data necessary to determine whether the intentional recharge of imported water in the region may have a significant adverse impact on compliance with the Salinity Objectives within the Region.
This agreement provides a framework for groundwater recharge of imported water and will facilitate conjunctive management in the region while protecting water quality. A copy of the agreement is included in Part 3 Appendix B.
3.9.2 Groundwater Quality
Groundwater quality varies among the Region’s groundwater basins, particularly in the subbasins of the Upper SAR due to geology and faulting patterns and recharge points, and from anthropogenic sources of contamination.
3.9.2.1 Ambient Water Quality
The Water Quality Control Plan (Basin Plan) for the Santa Ana River Basin (Region 8) (RWQCB, 2016a) requires the implementation of a watershed-wide total dissolved solids (TDS) and nitrogen groundwater monitoring program to determine ambient water quality in groundwater, assess compliance with groundwater quality objectives, and determine if assimilative capacity exists in groundwater management zones (GMZs). The current Basin Plan requires that the ambient water quality (AWQ) be computed every three years.
According to the Basin Plan (RWQCB, 2016a):
“TDS and nitrate-nitrogen water quality objectives for each management zone are based on historical concentrations of TDS and nitrate-nitrogen from 1954 through 1973 and are referred to herein as the ‘antidegradation’ objectives. This period brackets 1968, when the State Water Resources Control Board (State Water Board) adopted the state’s antidegradation policy in Resolution No. 68-16, “Policy with Respect to Maintaining High Quality Waters”. This Resolution establishes a benchmark for assessing and considering authorization of degradation of water quality.
A requirement of the January 2004 Nitrogen and TDS Basin Plan Amendment (Resolution No.
R8-2004-0001) is to perform a recomputation of AWQ for all groundwater management zones in the watershed for which adequate data exist every three years. To date, seven AWQ determinations have been made with the most recently completed for the 1998 to 2018 time period. The triennial AWQ determinations from each current period are used to assess compliance with the new water quality objectives and to determine if assimilative capacity exists for each Groundwater Management Zone (GMZ). By definition, assimilative capacity is determined to be the difference between the objective and the current AWQ: if the current quality of the GMZ is better than the water quality objective, then assimilative capacity exists. 349
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Assimilative capacity does not exist if the current quality of a GMZ is the same as or poorer than the water quality objectives.
According to the Basin Plan (RWQCB, 2016a), when a GMZ has little or no assimilative capacity:
“The Regional Board addresses such situations by providing dischargers with the opportunity to participate in TDS offset programs, such as the use of desalters, in lieu of compliance with numerical TDS limits. These offset provisions are incorporated into waste discharge requirements . . . An alternative that dischargers might pursue in these circumstances is revision of the TDS or nitrogen objectives, through the Basin Plan amendment process.
Consideration of less stringent objectives would necessitate comprehensive antidegradation review, including the demonstrations that beneficial uses would be protected and that water quality consistent with maximum benefit to the people of the State would be maintained . . . a number of dischargers have pursued this ‘maximum benefit objective’ approach, leading to the inclusion of ‘maximum benefit’ objectives and implementation strategies in this Basin Plan. Discharges to areas where the ‘maximum benefit’ objectives apply will be regulated in conformance with these implementation strategies.”
Table 3-16 shows the water quality objectives for both TDS and Nitrate for the nine (9) groundwater GMZs in the Upper Santa Ana River Watershed. As shown in the table below, the San Timoteo, Yucaipa and Beaumont GMZs have “maximum benefit” water quality objectives that require the implementation of certain projects and programs by specific dischargers as part of their maximum benefit demonstrations is required for the continued application of the “maximum benefit” objectives. The bold red numbers in the table indicate that the 2018 AWQ is above the WQO and assimilative capacity does not exist. 350
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Table 3-16. TDS Water Quality Objectives, Ambient Water Quality, and Assimilative Capacity
GROUNDWATER
MANAGEMENT ZONE
DWR BASIN
NAME
WATER
QUALITY
OBJECTIVE
2018 AMBIENT
TDS
WATER
QUALITY
OBJECTIVE
NITRATE
2018 AMBIENT
NITRATE
Bunker Hill-A San Bernardino
Basin 310 330 2.7 3.9
Bunker Hill-B San Bernardino
Basin 330 280 7.3 5.8
Lytle San Bernardino
Basin 260 240 1.5 2.4
Colton Rialto-Colton 410 490 2.7 3.3
Rialto Rialto Colton 230 240 2.0 3.4
San Timoteo, “maximum
benefit” San Timoteo 400 420 5.0 2.0
San Timoteo ,
“antidegradation” San Timoteo 300 420 2.7 2.0
Yucaipa, “maximum benefit” Yucaipa 370 320 5.0 6.2
Yucaipa, “antidegradation” Yucaipa 320 320 4.2 6.2
Riverside A Riverside-
Arlington 560 440 6.2 5.6
Beaumont, “maximum benefit” San Timoteo 330 280 5.0 2.7 Beaumont, “antidegradation” San Timoteo 230 280 1.5 2.7
3.9.3 Known Groundwater Contaminant Plumes
The SBBA has the following groundwater contaminant plumes:
• The Crafton-Redlands plume, with trichloroethylene (TCE) and lower levels of perchloroethylene (PCE), debromochloropropane (DBCP) and perchlorate; • The Norton Air Force Base TCE and PCE plume, stretching 2.5 miles from its source and contaminating 100,000 AF of groundwater;
• The Muscoy and Newmark plumes near the Shandon Hills, which are Superfund sites with TCE and PCE; and
• The Santa Fe plume with PCE, TCE, and 1,2 dichloroethylene (1,2-DCE) Other plumes include:
• Rialto Area Perchlorate Plume (Rialto-Colton Basin)
• North Riverside Basin MTBE Contamination (Riverside North Basin) These plumes are depicted in Figure 3-8.
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Figure 3-8. Groundwater Contaminant Plumes in the Region
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Separately from the foregoing remediation efforts, Fontana Water Company currently operates and maintains a groundwater remediation project at its Plant F10 pursuant to a long-term agreement with San Bernardino County, the owner and operator of the Mid Valley Sanitary Landfill and corresponding Clean-Up and Abatement Order issued to San Bernardino County by the RWQCB. The 5,000-gallons per minute (gpm) treatment plant utilizes liquid phase granular activated carbon to treat for volatile organic compounds including, but not limited to, PCE, TCE, 1,1-DCE, and cis-1,2-DCE. The plant treats and removes those contaminants from groundwater extracted from both the Rialto-Colton and No Man’s Land sub basins.
3.9.3.1 Crafton-Redlands Plume
Two commingled plumes, comprising the Crafton-Redlands plume, have impacted water supply wells for the cities of Riverside, Redlands, and Loma Linda, including Loma Linda University wells. One plume contains TCE and the other perchlorate; both are in the upper 300 to 400 feet of groundwater. TCE has been measured in water supply wells at over 100 parts per billion (ppb), over 20 times the MCL of 6 ppb. Currently, however, water supply well concentrations are around 7 ppb. Perchlorate is present in water supply wells at concentrations up to 77 ppb.
As required by the Santa Ana Regional Water Quality Control Board (SARWQCB), the Lockheed Martin Corporation (Lockheed) has prepared contingency plans to address impacts of the plume on water supply wells. These include blending, treatment, and/or providing alternative water supply sources. The plumes are currently being captured by the City of Riverside’s Gage Well Field. Lockheed has installed granular activated carbon treatment units at some of the gage wells to remove TCE and has installed ion exchange units on some of these wells for the removal of perchlorate.
3.9.3.2 Norton Air Force Base Plume
The Norton Air Force Base plume, located just to the southwest of the former installation in the City of San Bernardino, is a major contaminant plume, consisting primarily of TCE and PCE.
The plume has impaired 10 wells owned by the City of Riverside and the City of San Bernardino. Cleanup efforts by the Air Force, consisting of soil removal, soil gas extraction, and groundwater treatment, have significantly reduced this plume. The treatment plants now operate in a standby mode.
3.9.3.3 Newmark and Muscoy Plumes
Within the City of San Bernardino, the Newmark plume and the Muscoy plume consist primarily of PCE. The plumes have impacted San Bernardino water supply wells. Under the federal Superfund Program, the U.S. Environmental Protection Agency (EPA) has implemented cleanup of these plumes, including use of groundwater extraction and treatment using granulated activated carbon. The treated water is then used to supplement the City of San Bernardino’s potable water supply. It appears that cleanup efforts will be adequate to protect 32 down-gradient water supply wells. However, groundwater model simulations suggest that 353
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containment of the plume will need additional extraction wells that will result in pumping of at least 14,000 AFY.
3.9.3.4 Sante Fe Plume
The Santa Fe groundwater plume consists primarily of 1,2-DCE, TCE, and PCE. This plume is currently being monitored.
3.9.3.5 Rialto Area Perchlorate Plume
Since 2002, the SARWQCB has been conducting an investigation of groundwater contamination in the area of the City of Rialto. The focus of the investigation has been facilities located on a 160-acre site in Rialto. The site has also been designated as a Superfund site by the US EPA. In 2005 the SARWQCB Executive Officer issued a Cleanup and Abatement Order and subsequent amendments naming a number of responsible parties. Since that time, the Cleanup and Abatement Order has been the subject of challenges in petitions filed by entities named as parties responsible for the contamination.
In September 2010, EPA issued the Interim Action Record of Decision to the Source Area Operable Unit (SAOU) of the B.F. Goodrich Superfund Site, now referred to as the “Rockets, Fireworks, and Flares Superfund Site.” The EPA’s Remedy required Emhart Industries to install, operate, and maintain a groundwater pump and treatment system to intercept and control the spread of contaminated groundwater from the 160-acre parcel. The EPA Remedy is designed to capture and remove perchlorate and Trichloroethylene (TCE) in the groundwater in the Rialto-Colton Groundwater Basin emanating from a 160-acre parcel located in north Rialto.
On August 12, 2015, the Rialto, Colton, the County of San Bernardino and Emhart Industries (Emhart), entered into a Four-Party Implementation Agreement to implement the interim remedial action plan as required by the Consent Decree as entered on July 2, 2013. The remedial action required by the Work Consent Decree was selected and approved and overseen by the EPA. A copy of the Four Party Agreement is included in Part 3 Appendix B.
The County and Emhart agreed that the EPA Remedy would be combined with an existing groundwater extraction and treatment remedy designed and constructed by the County to capture and remove perchlorate and TCE in the Basin due to the landfill and required by the SARWQCB. This combined project is referred to as the “Combined Remedy” project.
The Combined Remedy includes:
1. Installing a new extraction well (EW-1), located at the northwest corner of Jerry Eves Park and piping to the water treatment system,
2. Expanding the existing County groundwater treatment system at the Rialto 3 well site to treat extracted water from EW-1,
3. Upgrading the chlorination station at the Combined Remedy site,
4. Constructing an inter-tie between Rialto and Colton to deliver Colton’s water rights produced out of EW-1 and,
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5. System improvements to the Colton’s drinking water distribution system, specifically modifications made by Emhart to a reservoir and pump station.
3.9.3.6 North Riverside Basin MTBE Contamination
In 1988, the SARWQCB issued a Cleanup and Abatement Order to the SFPP Colton Fuel Terminal (owned by Kinder Morgan) located in Bloomington, California. The Terminal, which is located just south of the I-10 freeway on the east side of Riverside Avenue, is a bulk petroleum storage and distribution facility which was built in the 1950s. It currently occupies 82 acres and contains 32 refined petroleum product tanks and fuel-loading racks where transport tanker trucks are filled.
In response to the Cleanup and Abatement Order, a monitoring and extraction well network for the Terminal was constructed. It consists of 131 wells in and around the Terminal as well as 14 soil vapor extraction wells. The site samples for Benzene, methyl tertiary butyl ether (MTBE) and tertiary butyl alcohol (TBA).
3.9.4 Surface Water Quality
Water quality within the Upper SAR watershed is addressed through several plans, regulations and guidelines including the Water Quality Control Plan for the Santa Ana River Basin (Basin Plan), which includes beneficial use designations and water quality objectives. Those water bodies not meeting the Basin Plan water quality objectives and determined to have beneficial uses are listed on the State’s 303(d) list of impaired water bodies and require a TMDL to be developed. Table 3-17 shows the water bodies in the Upper SAR watershed that are listed on the State’s 303(d) list for water quality impairments.
The SARWQCB states that the quality of the SAR is a function of the quantity and quality of the various components of the flows (SARWQCB 1995). Three components make up the flow of the water in the SAR: (1) storm flows, (2) baseflow, and (3) non-tributary flow. The relative proportion of these components varies throughout the year.
The first component, storm flows, results directly from rainfall, usually occurring between the months of December and April. Much of the rainfall and surface water runoff from the storms is captured and percolated into the groundwater basins. The quality of storm flow water is highly variable.
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Table 3-17: 303(d) Listed Water Bodies in the Upper SAR
WATER BODY IMPAIRMENTS
Big Bear Lake Mercury, Noxious Aquatic Plants, Nutrients, PCBs Grout Creek Nutrients
Knickerbocker Creek Pathogens
Lytle Creek Pathogens
Mill Creek, Reach 1 Pathogens
Mill Creek, Reach 2 Pathogens
Mountain Home Creek Pathogens
Mountain Home Creek, East Fork Pathogens
Rathbone (Rathbun) Creek Cadmium, Copper, Nutrients, Sediment/ Siltation Santa Ana River, Reach 6 Cadmium, Copper, Lead
Santa Ana River, Reach 4 Pathogens
Santa Ana River, Reach 3 Copper (wet weather only), Lead, Pathogens Summit Creek Nutrients
Two TMDLs have been adopted to address the above impairments in the Upper SAR. • TMDLs for Bacterial Indicators in the Middle Santa Ana River Watershed (February 3, 2005): Addresses pathogens in the Santa Ana River, Reach 3. • Nutrient TMDL for Dry Hydrological Conditions for Big Bear Lake (April 21, 2006):
Addresses nutrients in Big Bear Lake.
Baseflow makes up the second component of water flow in the SAR, a large portion coming from the discharge of treated wastewater into the river in addition to rising groundwater in the basin. This baseflow includes the non-point source discharges as well as the uncontrolled and unregulated agricultural and urban runoff. Water quality objectives are set in relation to the baseflow in the river, not to the total flow in the river (see Table 3-18). The intent of these objectives is to protect the river’s groundwater recharge beneficial use. Compliance with these objectives is verified by annual measurement of the baseflow quality.
The quantity and quality of baseflow is most consistent during the month of August. At that time of year, the influence of storm flows and non-tributary flows is at a minimum and volumes of rising water and non-point source discharges tend to be low. The major component of baseflow in August is municipal wastewater. For these reasons, this period has been selected by the SARWQCB as the time when baseflow will be measured and its quality determined. To determine whether the water quality and quantity objectives for baseflow in Reach 3 of the SAR 356
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are being met, the SARWQCB collects a series of grab and composite samples during August of each year. The results are compared with the continuous monitoring data collected by USGS and data from other sources.
Table 3-18: SAR Basin Surface Water Quality Objectives (WQO)
INLAND SURFACE
STREAMS
UPPER SAR BASIN
WATER QUALITY OBJECTIVES MILLIGRAMS PER LITER (MG/L)
TOTAL
DISSOLVED
SOLIDS
(TDS)
HARDNESS
(CACO3)
SODIUM
(NA)
CHLORIDE
(CL)
TOTAL
INORGANIC
NITROGEN
(TIN)1
SULFATE
(SO4)
CHEMICAL
OXYGEN
DEMAND
(COD)
Reach 2 - 17th Street in
Santa Ana to Prado
Dam
650c --- --- --- --- --- ---
Reach 3 - Prado Dam to
Mission Blvd. - Baseflow 700 350 110 140 102 150 30
Reach 4 - Mission Blvd.
in Riverside to San
Jacinto Fault
550 --- --- --- 10 --- 30
Reach 5 - San Jacinto
Fault in San Bernardino
to Seven Oaks Dam
300 190 30 20 5 60 25
Reach 6 - Seven Oaks
Dam to Headwaters 200 100 30 10 1 20 5
Source: SARWQCB 2019
1. Total nitrogen, filtered sample.
The SARWQCB sets discharge requirements on wastewater discharges, the major source of baseflow in the SAR. Waste discharge requirements are developed on the basis of the limited assimilative capacity of the river. Non-point source discharges, generally from urban runoff and agricultural tailwater, are regulated by requiring compliance with Best Management Practices (BMPs), where appropriate.
The third component of flow in the SAR that influences water quality is characterized by the SARWQCB as non-tributary flow. Non-tributary flow is generally imported water released in the upper basin for recharge in the lower basin (SARWQCB 1995).
Streams on the Santa Ana Basin generally have increasing dissolved minerals as one goes downstream. This effect is due to the fact that water is used, recycled, and used again. The magnitude or amount of TDS concentration rises with each use of water. Groundwater also enters basin streams in some reaches, and their sampling indicated that some of the highest TDS (and in some cases nitrates) may occur at sites on the valley floor that are dominated by rising groundwater (USGS 2006). Nitrate concentrations are higher in Santa Ana Basin streams receiving treated wastewater than in streams without treated wastewater. The principal source of nitrate is fertilizer from historic agricultural operations. 357
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Table 3-19 provides a summary of the available historical surface water quality data for TDS and nitrogen at points along the SAR (USGS 2007).
Table 3-19: Average Historic Surface Water Quality for Locations on the SAR (1990-2001)
WATER QUALITY CONSTITUENT
METROPOLITAN
CROSSING GAGE
(REACH 3)A
RIX-RIALTO EFFLUENT
OUTFALL
(REACH 4)A
MENTONE GAGE
(REACH 5)A
TDS 560b 520c 230b
TDS Basin Plan Objective by Reach 700 550 300
Total Inorganic Nitrogen (TIN) 7.3b 8.5c 0.3b
TIN Basin Plan Objective by Reach 10d 10 5
Source: USGS gage data. Data for River Only Mentone Gage begins in October 1998. Data for Riverside Narrows Gage begins in August 1997.
b USGS 2004.
c The TDS and TIN values assigned for RIX-Rialto are the maximum values that occurred during 2001-2002 as reported in Table
4.4-9 of the SBMWD RIX Facility Recycled Water Sales Program Preliminary Environmental Impact Report (PEIR), March 2003. d Total nitrogen, filtered sample.
3.9.5 Salt and Nutrient Management Plan
The stakeholders in the Upper Santa Ana River Watershed Groundwater Basins are collaboratively investigating the salt and nutrient loading to several of the underlying groundwater basins. The SNMP will focus on the upper Santa Ana River Watershed. Prolonged droughts have highlighted the need for an enhanced water supply portfolio, which includes plans to increase stormwater capture and recycled water use. Without enough assimilative capacity, existing and new wastewater/recycled water projects in the SBBA may be subject to costly salt removal using advanced treatment such as reverse osmosis (RO).
The SNMP will perform a sophisticated analysis through a collaborative process that will involve the Regional Water Quality Control Board (RWQCB). If the modeling demonstrates that higher objectives are warranted, then a Salt and Nutrient Management Plan would be developed and used as backup to request a change in water quality objectives to the GMZ’s in the SBBA from the RWQCB.
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3.9.6 Water Quality Impacts on Supply Reliability
Water quality is monitored, tracked, and addressed by implementing treatment, as necessary.
In addition to the groundwater plumes described above, there are other contaminants in the basin, including but not limited to nitrate and DBCP, which can require treatment. There are also emerging contaminants and new water quality regulations which could increase the level of required treatment.
Per and polyfluoroalkyl substances (PFAS) are manmade fluorinated organic compounds found in and used in the manufacturing of common items such as carpet, clothing, fabric, food packaging, nonstick cookware, and fire retardant foams. PFAS are synthetically made to be resistant to both water and liquids, are not easily broken down and destroyed, and are believed to have adverse health effects. Two common PFAS, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS), are regulated by the California Division of Drinking Water and have notification limits of 5.1 ppt and 6.5 ppt, respectively. The Office of Environmental Health Hazard Assessment (OEHHA) is developing the Public Health Goal (PHG) for PFOS and PFOA which are scheduled to be released in 2021. Once the PHGs for PFOS and PFOA are established, the State Water Resource Control Board will develop a maximum contaminant level (MCLs) to regulate PFOS and PFOA concentrations in drinking water, both of which are constituents of emerging concern.
Water agencies are responsible for providing treatment to ensure their potable water supply meets all applicable water quality regulations.
3.10 Major Regional Water Infrastructure
The water-related infrastructure of the Upper SAR watershed reflects the complex water history of the IRWM Region. The predecessors of many of the water agencies that are participating in the IRWM Plan were constructing ditches in the 1800s. The water rights and facilities established in the 1800s have helped determine the structure of today’s water agencies and the arrangement of today’s infrastructure. After State Water Project (SWP) facilities were extended into the Region in the early 1970s, State Water Contractors receiving deliveries from the East Branch of the SWP – Valley District, San Gorgonio Pass Water Agency, and Metropolitan Water District of Southern California (Metropolitan) – constructed pipelines to take advantage of the imported water. Figure 3-9 shows the major water-related infrastructure in the Region.
3.10.1 Regional Water Supply Infrastructure
Groundwater and local surface water serve as important sources of regional water supply. The SBBA is a major source of water supply for agencies in San Bernardino and Riverside Counties.
Three major regional transmission systems exist in the IRWM Region and are used to deliver water to the City of Riverside. These are the Gage Canal, Waterman Pipeline, and Riverside 359
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Canal. The Gage Canal is owned by the Gage Canal Company. As of 2005, the City of Riverside owned approximately 59% of the Gage Canal Company. The canal extends from the SAR near Loma Linda to the Arlington Heights area. The Gage Canal is used to deliver both potable and irrigation water.
The Waterman Pipeline extends from the Bunker Hill Subbasin (discussed later in this chapter) to the Canyon Crest area and is used to deliver groundwater to portions of the City of Riverside.
The Riverside Canal is a 12-mile canal extending from the City of Colton to Jefferson Street in the City of Riverside. Non-potable groundwater is conveyed in the Flume Pipeline to the Riverside Canal.
3.10.2 State Water Project Facilities
SWP water is imported into the Upper SAR watershed via the East Branch of the California Aqueduct. At the Devil Canyon Power Plant, located at the foot of the San Bernardino Mountains near Interstate 215, SWP water can be delivered in several directions in State facilities or in transmission systems belonging to State Water Contractors.
The SWP’s Santa Ana Pipeline extends south from the East Branch, roughly paralleling Lytle Creek and into Lake Perris. Deliveries from the Santa Ana Pipeline can be made to Metropolitan member agencies including Western, Eastern Municipal Water District (Eastern), and the San Diego County Water Authority.
The East Branch Extension of the
SWP is a combination of facilities built
by Valley District and the State and
funded by Valley District and San
Gorgonio Pass Water Agency. Valley
District operates these facilities for the
State and San Gorgonio Pass Water
Agency. The East Branch Extension
makes deliveries from Devil Canyon
east along the foothills of the San
Bernardino Mountains and out to the
San Gorgonio Pass Water Agency
service area. Phase 2 of the East
Branch Extension increased the
capacity to 17,300 acre-feet (AF),
which is the Agency’s official allotment
of SWP water, and is enough to
supply approximately 35,000 families
each year.
The California Aqueduct delivers imported water
to the Upper Santa Ana River Watershed.
Photo Credit: Western Municipal Water District
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3.10.3 State Water Contractors Facilities
Four State Water Contractors have facilities in the IRWM Region: Valley District, San Gorgonio Pass Water Agency, Metropolitan, and San Gabriel Valley Municipal Water District.
Metropolitan’s Inland Feeder extends from Devil Canyon to Diamond Valley Lake and the tunnels within the San Bernardino Mountains. Currently, the Foothill Pipeline is being used to make deliveries of SWP water to the completed portions of the Inland Feeder for delivery to Diamond Valley Lake.
Metropolitan’s Rialto Pipeline is used to make deliveries from Devil Canyon to Metropolitan’s F.E. Weymouth Treatment Plant in the San Gabriel Valley and to its Robert B. Diemer Treatment Plant, which supplies treated water to Western and Eastern. In addition, the Rialto Pipeline makes deliveries to surface water treatment plants owned by Metropolitan’s member agencies and to groundwater recharge facilities.
The Devil Canyon-Azusa Pipeline is used primarily to make deliveries for replenishment of the Main San Gabriel Basin. Valley District owns capacity in this pipeline. Through this pipeline, Valley District can deliver SWP water to the western portion of its service area including West Valley and Fontana Water Company as well as the Cactus Spreading Basins.
Many of Valley District’s facilities have been integrated into the SWP, as described in Section
2.2.1. In addition, Valley District has three pipelines that are not integrated into the SWP. These are the Baseline Feeder, Baseline Feeder Extension South, and Central Feeder. The Baseline Feeder is a 48-inch pipeline that serves potable water from the SBBA to the City of Rialto, West Valley, and Riverside Highland Water Company.
The Baseline Feeder Extension South is a 78-inch pipeline that was constructed jointly with Western Municipal Water District north/south in alignment from the vicinity of 9th Street and Waterman Avenue in San Bernardino, south past the Antil area where there is a major concentration of production wells, and on to the vicinity of the SAR. This pipeline will ultimately serve water from the SBBA throughout Valley District’s service area and on to Riverside County.
Valley District and their partners completed the construction of a portion of the Central Feeder, in an east/west alignment in San Bernardino Avenue from Opal Avenue Westerly to Texas Street in Redlands. The Central Feeder may eventually be extended and connected to the Baseline Feeder Extension South and possibly to the SWP Santa Ana Pipeline.
3.10.4 Regional Flood Control Infrastructure
The Upper SAR watershed consists of many tributaries flowing to the SAR. These tributaries exhibit a range of development from natural streams to concrete-lined channels. Many of the stream’s flow through heavily developed areas. The San Bernardino County Flood Control District (SBCFCD) operates and maintains many of the tributary systems that are deemed “regional” (750 cubic feet per second (cfs) or greater flow and/or 640 acres or greater of watershed as well as portions of the SAR). Smaller-scale control facilities are generally 361
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operated by local jurisdictions. Flood control agencies’ boundaries follow the county boundaries for those areas which they manage.
The regional flood control facilities have been continually developed and operated by SBCFCD since its establishment in 1939 and are operated for the general safety of the residents of San Bernardino County. Flood control facilities and improvements protect vital roadways and utility corridors along with providing public recreational amenities such as trails and landscaping.
Endangered species habitat is protected with various project and non-project related improvements.
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Figure 3-9: Major Water Supply Infrastructure
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C I T Y O F R I A L T O
Water Shortage
Contingency Plan
City of Rialto
J U N E 2021
Prepared by Water Systems Consulting, Inc.
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TABLE OF CONTENTS
List of Figures ..................................................................................................................................................... ii List of Tables ..................................................................................................................................................... iii Acronyms & Abbreviations ............................................................................................................................. iv City of Rialto ...................................................................................................................................................... 1
1.0 Water Service Reliability Analysis ................................................................................................. 3
2.0 Annual Water Supply and Demand Assessment .......................................................................... 3
3.0 Water Shortage Stages ................................................................................................................... 6
4.0 Shortage Response Actions ................................................................................................................. 7
4.1 Supply Augmentation ..................................................................................................................... 7
4.2 Demand Reduction ..................................................................................................................... 8
4.3 Operational Changes and Additional Mandatory Restrictions ........................................... 12
4.4 Emergency Response Plan ..................................................................................................... 12
4.5 Seismic Risk Assessment and Mitigation Plan ..................................................................... 13
4.6 Shortage Response Action Effectiveness ............................................................................ 13
5.0 Communication Protocols................................................................................................................ 13
6.0 Compliance and Enforcement ....................................................................................................... 13
7.0 Legal Authorities .............................................................................................................................. 14
7.1 Water Shortage Emergency Declaration .......................................................................... 14
7.2 Local/Regional Emergency Declaration ............................................................................. 14
8.0 Financial Consequences of WSCP................................................................................................ 14
9.0 Monitoring and Reporting ............................................................................................................. 14
10.0 WSCP Refinement Procedures ...................................................................................................... 15
11.0 Plan Adoption, Submittal and Availability ................................................................................. 15 References ....................................................................................................................................................... 16 Attachment 1: Rialto’s Ordinance No. 1560
Attachment 2: Adoption Resolution
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LIST OF FIGURES
Figure 1. Regional and Retail Agency Annual Assessment Process and Timeline .................................. 5 Figure 2. Crosswalk to DWR Six Standard Stages .................................................................................... 7
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LIST OF TABLES
Table 1. Annual Assessment Procedure ........................................................................................................ 4 Table 2: DWR 8-1 Water Shortage Contingency Plan Stages ............................................................... 7 Table 3: DWR 8-3R Supply Augmentation & Other Actions .................................................................... 8 Table 4: DWR 8-2 Demand Reduction Actions ............................................................................................ 8
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ACRONYMS & ABBREVIATIONS
AWIA American Water Infrastructure Association
BTAC Basin Technical Advisory Committee
CWC California Water Code
CII Commercial, Industrial, and Institutional
DWR California Department of Water Resources
DRA Drought Risk Assessment
ERP Emergency Response Plan
GW Groundwater
IRUWMP Integrated Regional Urban Water Management Plan
RRA Risk and Resilience Assessment
SWP State Water Project
UWWP Urban Water Management Plan
WSCP Water Shortage Contingency Plan
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1 W AT E R S H O R T A GE C O NT I N GE NC Y P L A N City of Rialto
This Water Shortage Contingency Plan is a strategic plan that the City of Rialto (Rialto) uses to prepare for and respond to water shortages.
A water shortage occurs when water supply available is insufficient to meet the normally expected customer water use at a given point in time. A shortage may occur due to a number of reasons, such as water supply quality changes, climate change, drought, regional power outage, and catastrophic events (e.g., earthquake).
Additionally, the State may declare a statewide drought emergency and mandate th at water suppliers reduce demands, as occurred in 2014. The WSCP serves as the operating manual that Rialto will use to prevent catastrophic service disruptions through proactive, rather than reactive, mitigation of water shortages. This WSCP provides a process for an annual water supply and demand assessment and structured steps designed to respond to actual conditions. This level of detailed planning and preparation provide accountability and predictability and will help Rialto maintain reliable supplie s and reduce the impacts of any supply shortages and/or interruptions.
This WSCP was prepared in conjunction with Rialto’s 2020 UWMP, which is included in the 2020 Upper Santa Ana River Watershed Integrated Urban Water Management Plan (2020 IRUWMP) and is a standalone document that can be modified as needed. This document is compliant with the California Water Code (CWC) Section 10632 and incorporated guidance from the State of California Department of Water Resources (DWR) UWMP Guidebook.
IN THIS SECTIO N
• Water Service
Reliability
• Annual Water
Supply and
Demand
Assessment
• Supply Shortage
Stages and
Response Actions
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The WSCP describes the following:
1. Water Service Reliability Analysis: Summarizes Rialto’s water supply analysis and reliability and identifies any key issues that may trigger a shortage condition.
2. Annual Water Supply and Demand Assessment Procedures: Describes the key data inputs, evaluation criteria, and methodology for assessing the system’s reliability for the coming year and the steps to formally declare any water shortage stages and response actions.
3. Water Shortage Stages: Establishes water shortage stages to clearly identify and prepare for shortages.
4. Shortage Response Actions: Describes the response actions that may be implemented or considered for each stage to reduce gaps between supply and demand.
5. Communication Protocols: Describes communication protocols under each stage to ensure customers, the public, and government agencies are informed of shortage conditions and requirements.
6. Compliance and Enforcement: Defines compliance and enforcement actions available to administer demand reductions.
7. Legal Authority: Lists the legal documents that grant the City the authority to declare a water shortage and implement and enforce response actions.
8. Financial Consequences of WSCP Implementation: Describes the anticipated financial impact of implementing water shortage stages and identifies mitigation strategies to offset financial burdens.
9. Monitoring and Reporting: Summarizes the monitoring and reporting techniques to evaluate the effectiveness of shortage response actions and overall WSCP implementation. Results are used to determine if additional shortage response actions should be adjusted.
10. WSCP Refinement Procedures: Describes the factors that may trigger updates to the WSCP and outlines how to complete an update.
11. Plan Adoption, Submittal, and Availability: Describes the process for the WSCP adoption, submittal, and availability after each revision.
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1.0 Water Service Reliability Analysis
As part of the 2020 IRUWMP, Rialto completed a water supply reliability analysis for normal, single-dry, and five-year consecutive dry year periods from 2025-2045. A Drought Risk Assessment (DRA) was also performed to analyze supply reliability under five consecutive years of drought from 2021-2025. As described in Chapter 3 of the 2020 IRUWMP, the effects of a local drought are not immediately recognized since the region uses the local groundwater basins to simulate a large reservoir for long term storage. Rialto is able to pump additional groundwater to meet increased demands in dry years and participates in efforts to replenish the basins with imported and local water through regional recharge programs. Additionally, Rialto implements several ongoing water conservation measures.
Regional recharge programs and conservation help to optimize and enhance the use of regional water resources. Based on the 2020 IRUWMP analysis, Rialto’s water supply is reliable and not expected to see impactful change under drought conditions.
Even though localized drought conditions should not affect supply, other shortages may occur due to a number of reasons, such as water supply quality changes, regional power outage, State mandates for water use efficiency standards, and catastrophic events (e.g., earthquake). Therefore, Rialto will use this WSCP as appropriate to address shortages and other supply emergencies.
2.0 Annual Water Supply and Demand Assessment
As an urban water supplier, Rialto must prepare and submit an Annual Water Supply and Demand Assessment (Annual Assessment). Starting in 2022, the Annual Assessment will be due by July 1 of every year, as indicated by CWC Section 10632.1. The Annual Assessment is an evaluation of the near-term outlook for supplies and demands to determine whether the potential for a supply shortage exists and whether there is a need to trigger a WSCP shortage stage and response actions in the current calendar year to maintain supply reliability. This process will take place at the same time each year based on known circumstances and information available to Rialto at the time of analysis and can be update or revised at any time if circumstances change.
Rialto will establish and convene an internal WSCP Team to conduct the Annual Assessment each year. The WSCP may include the following staff:
➢ Utilities Manager
➢ Conservation Coordinator
➢ Rialto Water Services/Veolia Operations Staff
The Annual Assessment procedure, including key data inputs and evaluation criteria, is summarized in Table 1. The Annual Assessment procedure and timeline, along with how it integrates with the annual assessment that will be conducted on a regional basis in parallel, is shown graphically in Figure 1.
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Table 1. Annual Assessment Procedure
TIMING
ASSESSMENT
ACTIVITIES
PROCEDURE, KEY DATA INPUTS, EVALUATION
CRITERIA AND OTHER CONSIDERATIONS
STAFF
RESPONSIBLE
JAN- FEB Estimate
unconstrained
demands for
coming year
Demands will be estimated based on water
sales forecasts from annual budget or prior
year demands plus any anticipated changes
Utilities Manager
JAN- FEB Estimate
available
supplies for the
year,
considering the
following year
will be dry
The BTAC evaluates groundwater in storage
each year. The Bunker Hill, Lytle Creek,
Rialto-Colton, and Riverside North basins are
sustainably managed to provide storage for
use in dry years. In the unlikely event that
local supplies are reduced, Rialto will
coordinate with the BTAC to identify
anticipated supplies.
Utilities Manager
JAN- FEB Consider
potential
constraints that
may impact
supply delivery
Identify any known regional or Rialto
infrastructure issues that may pertain to near-
term water supply reliability, including repairs,
construction, and environmental mitigation
measures that may temporarily constrain
capabilities, as well as any new projects that
may add to system capacity.
Identify any facilities out of service due to
water quality problems, equipment failure, etc.
that may impact normal water deliveries.
Identify any potential or emerging impacts to
groundwater quality, such as emerging
regulatory constraints that may limit use of
available supplies for potable needs.
RWS/Veolia
FEB Convene
WSCP Team to
conduct Annual
Assessment
Compare supplies and demands and discuss
any constraints that may impact supply
delivery. If the potential for a shortage exists,
determine which shortage response level and
actions are recommended to reduce/eliminate
the shortage.
Additionally, if the State declares a drought
state of emergency and requires demand
reductions, the WSCP Team will determine
which water shortage stage and response
actions are needed to comply with the State
mandate.
WSCP Team
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TIMING
ASSESSMENT
ACTIVITIES
PROCEDURE, KEY DATA INPUTS, EVALUATION
CRITERIA AND OTHER CONSIDERATIONS
STAFF
RESPONSIBLE
JUNE City Council If the potential for a shortage exists or the State has mandated demand reductions, the
results of the Annual Assessment will be
presented to the Water Subcommittee of the
City Council, Utility Commission, and the
Rialto City Council, including the
recommended shortage stage and response
actions. The City Council may order the
implementation of a shortage stage and will
adopt a resolution declaring the applicable
water shortage stage.
City Manager,
Water
Subcommittee &
City Council
ON-
GOING
Implement
WSCP actions,
if needed
Relevant members of Rialto staff will
implement shortage response actions
associated with the declared water shortage
stage
WSCP Team
BY JULY 1 Submit Retail
Annual
Assessment
Send Final Retail Annual Assessment to DWR WSCP Team
Figure 1. Regional and Retail Agency Annual Assessment Process and Timeline
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3.0 Water Shortage Stages
With the exception of a catastrophic failure of infrastructure, Rialto does not foresee imposing a water shortage stage except under the State’s direction, as occurred in 2014. If a potential water supply shortage is identified in the Annual Assessment, this section provides information on the water shortage stages and response actions that Rialto may implement.
Rialto uses four (4) shortage stages to identify and respond to water shortage emergencies. At a minimum, Rialto encourages baseline conservation efforts year-round, regardless of a shortage emergency.
Stage I: Normal Conditions
Normal conditions mean normal supply and distribution capacity is available.
Stage II: Water Alert
Stage 2 means that the city may not be able to meet all water demands of all water customers, or the state of California has adopted regulations requiring the city to implement requirements and actions of a Stage 2 Water Alert as outlined in Section 12.20.022 of Ordinance Number 1560, regardless of the city's local water supply. All customers are required to reduce potable water consumption by a minimum twenty percent compared to their potable water consumption in the 2013 base year.
Stage III: Water Warning
Stage 3 means that the city is not able to meet all water demands of all water customers, or the state of California has adopted regulations requiring the city to implement requirements and actions of a Stage 3 water warning as outlined in Section 12.20.023 of Ordinance Number 1560, regardless of the city's local water supply. All customers are required to reduce potable water use consumption by a minimum twenty-five percent compared to their potable water consumption in the 2013 base year.
Stage IV: Water Emergency
Stage 4 means that the city is experiencing a major failure of water supply or distribution, or the state of California has adopted regulations requiring the city to implement requirements and actions of a Stage 4 water emergency as outline in Section 12.20.024 of Ordinance Number 1560, regardless of the city's local water supply. All customers are required to reduce potable water consumption by a minimum thirty percent compared to their potable water consumption in the 2013 base year. The use of water shall be limited to essential household, commercial, manufacturing or processing uses only, except where other uses may be allowed by permit.
The CWC outlines six standard water shortage stages that correspond to a gap in supply compared to normal year availability. The six standard water shortage stages correspond to progressively increasing estimated shortage conditions (up to 10-, 20-, 30-, 40-, 50-percent, and greater than 50- percent shortage compared to the normal reliability condition) and align with the response actions that a water supplier would implement to meet the severity of the impending shortages.
The CWC allows suppliers with an existing WSCP that uses different water shortage stages to comply with the six standard stages by developing and including a cross-reference relating its existing shortage categories to the six standard water shortage stages. Rialto is maintaining the current four shortage stages for this WSCP. A crosswalk defines how Rialto’s current water shortage stages will align with the DWR’s standardized 6 stages of shortage. A visual representation of this alignment is shown in Figure 2.
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Figure 2. Crosswalk to DWR Six Standard Stages
Table 2: DWR 8-1 Water Shortage Contingency Plan Stages
SHORTAGE
STAGE
PERCENT SHORTAGE RANGE1
(NUMERICAL VALUE AS A PERCENT) WATER SHORTAGE CONDITION 1 Up to 10% Normal Conditions (Rialto Stage 1)
2 Up to 20% Water Alert (Rialto Stage 2)
3 Up to 30% Water Warning (Rialto Stage 3)
4 Up to 40% Water Emergency (Rialto Stage 4)
5 Up to 50% Water Emergency (Rialto Stage 4)
6 >50% Water Emergency (Rialto Stage 4)
1 One stage in the Water Shortage Contingency Plan must address a water shortage of 50%.
4.0 Shortage Response Actions
This section was completed pursuant to CWC Section 10632(a)(4) and 10632.5(a) and describes the response actions that must be implemented or considered for each stage to minimize social and economic impacts to the community.
In accordance with CWC 10632(b) Rialto analyzes and defines water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas.
4.1 Supply Augmentation
Table 3 identifies the supply augmentation actions Rialto can take in the event of a water shortage condition. Rialto currently maintains mutual aid agreements with the City of San Bernardino, Fontana Water, RHWC, and WVWD. During water shortage emergencies, Rialto may be able to obtain supplemental water supply though these connections, if available. During water shortage emergencies, Rialto may be able to obtain supplemental water supply through these connections, if available.
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Table 3: DWR 8-3R Supply Augmentation & Other Actions
SHORTAGE
STAGE
SUPPLY
AUGMENTATION
METHODS AND OTHER
ACTIONS BY WATER
SUPPLIER
HOW MUCH IS THIS
GOING TO REDUCE
THE SHORTAGE
GAP? ADDITIONAL EXPLANATION OR REFERENCE
4 Other purchases 0-100% Mutual aid agreements with the City of San Bernardino, Fontana Water, RHWC, and WVWD.
4.2 Demand Reduction
In addition to prohibitions on end uses, Rialto participates in Statewide efforts to conserve water, and protect the ecological habitat of the region. The reduction goal is to balance supply and demand. Table 4 summarizes these efforts and end use prohibitions.
Table 4: DWR 8-2 Demand Reduction Actions
SHORTAGE STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS
THIS GOING
TO REDUCE
THE
SHORTAGE
GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
All Expand Public
Information
Campaign
0-20% No
1 CII - Restaurants
may only serve
water upon
request
0-1% All restaurants and food establishments
are requested not to serve water to their
customers unless specifically requested
by the customer.
No
1 Landscape - Limit
landscape
irrigation to
specific times
0-5% Watering with automatic sprinklers
should be done between 8 pm and 6 am
and that hand watering and
nonautomatic sprinklers should be done
between 6 pm and 8 am. Drip irrigation is
exempt from this recommendation.
Water being used during repair or
maintenance of watering systems is
exempt from this section.
No
1 Landscape - Other
landscape
restriction or
prohibition
0-5% The use of sprinklers for any type of
irrigation during high winds, which divert
a significant amount of water away from
the intended landscaping, is prohibited.
Yes
1 Landscape - Other
landscape
restriction or
prohibition
0-5% The irrigation with potable water of
landscape outside of newly constructed
homes and buildings must be consistent
with regulations or other requirements
established by the California Buildings
Standards Commission, as those
Yes
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SHORTAGE STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS
THIS GOING
TO REDUCE
THE
SHORTAGE
GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
regulations may be modified from time to
time.
1 Landscape -
Prohibit certain
types of
landscape
irrigation
0-5% The irrigation of potable water of
ornamental turf on public street medians
is prohibited. The term "median" shall
mean the strip of land between street
lanes.
Yes
1 Landscape -
Restrict or prohibit
runoff from
landscape
irrigation
0-5% Water used which results in flooding or
run-off should be prevented and
controlled. Use of water for any purpose
which results in flooding or run-off in
gutters, driveways or streets is
prohibited.
Yes
1 Other - Customers
must repair leaks,
breaks, and
malfunctions in a
timely manner
0-1% No person shall knowingly permit water
to leak from any facility, improvement or
plumbing fixture on his/her/its premises;
any such leak shall be repaired in a
timely manner.
Yes
1 Other - Prohibit
use of potable
water for washing
hard surfaces
0-1% There shall be no application of water to
sidewalks, walkways, driveways, parking
areas, patios, porches, verandas, tennis
courts or other paved, concrete or other
hard surface areas, except that
flammable or other similarly dangerous
or unhealthy substances may be washed
from said areas by direct hose flushing
for the benefit of public health or safety.
Yes
1 Other - Require
automatic shut of
hoses
0-1% Washing of automobiles, trucks, trailers,
boats and other mobile equipment is
prohibited unless done with a bucket or
hand held device equipped with an
automatic shut off trigger nozzle or
device attached to it that causes it to
cease dispensing water immediately
when not in use. This section does not
apply to the washing of the above-listed
vehicles or mobile equipment when
conducted at a commercial car or truck
wash utilizing recirculating systems.
Such washings are exempted from these
regulations when the health, safety, and
welfare of the public is contingent upon
frequent vehicle cleaning such as
garbage trucks and vehicles used to
transport food and perishables.
Yes
1 Water Features -
Restrict water use
for decorative
0-1% No water to be used to clean, fill, operate
or maintain decorative fountains unless
the water is from a recycled source.
Yes
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SHORTAGE STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS
THIS GOING
TO REDUCE
THE
SHORTAGE
GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
water features,
such as fountains
1 Water Features -
Restrict water use
for decorative
water features,
such as fountains
0-1% No water shall be used to clean, fill,
operate or maintain levels in decorative
fountains unless such water is part of a
recirculating system.
Yes
2 CII - Lodging
establishment
must offer opt out
of linen service
0-1% Operators of hotels and motels must
provide guests with the option of
choosing not to have towels and linens
laundered daily and prominently display
notice of this option.
Yes
2 CII - Restaurants
may only serve
water upon
request
0-1% All restaurants are prohibited from
serving water to their customers except
when specifically requested by the
customer.
Yes
2 Landscape - Limit
landscape
irrigation to
specific days
0-5% All landscape irrigation shall be limited to
no more than four (4) days per week for
no more than ten (10) minutes per
station per day. This provision does not
apply to any landscape that has water-
efficient devices that are operated
properly. Water-efficient devices are drip
irrigation systems and operational
weather-based irrigation controllers. The
term "week" is defined as Sunday
through Saturday.
Yes
2 Landscape - Other
landscape
restriction or
prohibition
0-5% The city shall screen all new applications
for water service installations and shall
limit water use to that essential for
construction and testing of landscape
plumbing. Limited landscaping for new
development shall be allowed as
approved by the city.
Yes
2 Landscape - Other
landscape
restriction or
prohibition
0-5% Irrigating turf or ornamental landscapes
during or within forty-eight (48) hours
following measurable precipitation in
excess of one-quarter inch is prohibited
Yes
2 Other - Customers
must repair leaks,
breaks, and
malfunctions in a
timely manner
0-1% All customers shall repair all leaks within
seventy-two (72) hours of notification by
the city, actual notice by the customer, or
other notice of such leak, unless other
arrangements are made with the city
administrator or his/her designee.
Yes
3B CII - Other CII
restriction or
prohibition
0-1% Water used for compaction, dust control,
and other types of construction shall be
by permit only and will be limited to
Yes
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SHORTAGE STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS
THIS GOING
TO REDUCE
THE
SHORTAGE
GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
conditions of the permit or may be
prohibited as determined by the city
administrator, or his/her designee.
3A Landscape - Limit
landscape
irrigation to
specific days
0-5% All landscape irrigation with potable
water shall be limited to no more than
three days per week for no more than
ten minutes per station per day. This
provision does not apply to any
landscape that has water-efficient
devices that are operated properly.
Water-efficient devices are drip irrigation
systems and operational weather-based
irrigation controllers. Week is defined as
Sunday through Saturday.
Yes
3A Landscape - Other
landscape
restriction or
prohibition
0-5% New water service shall be installed but
water shall be used before occupancy for
essential construction only and for
testing of landscape irrigation systems.
The installation of new landscaping for
all new development/projects must be
approved by the city.
Yes
3C Other - Prohibit
vehicle washing
except at facilities
using recycled or
recirculating water
0-1% Washing of automobiles, trucks, trailers,
boats, airplanes and other types of
mobile equipment is prohibited. Washing
of the above-listed vehicles or mobile
equipment shall be done only at a
commercial car wash where recirculating
or recycled water is being utilized. Such
washings are exempt from these
regulations when the health, safety, and
welfare of the public is contingent upon
frequent vehicle cleaning such as
garbage trucks and vehicles used to
transport food and perishables.
Yes
3A Other water
feature or
swimming pool
restriction
0-1% Ornamental ponds, fountains, water
displays, and artificial lakes shall not be
filled or refilled.
Yes
3A Other water
feature or
swimming pool
restriction
0-1% Swimming pools, hot tubs, and spas
shall not be filled or refilled.
Yes
4 CII - Other CII
restriction or
prohibition
0-1% No water shall be used for construction
purposes unless they are using
reclaimed water. All fire hydrant and
construction meters shall be locked off or
removed.
Yes
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SHORTAGE STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS
THIS GOING
TO REDUCE
THE
SHORTAGE
GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
4 Landscape - Limit
landscape
irrigation to
specific days
0-5% Commercial nurseries shall water only
between the hours of 11 p.m. and 6 a.m.
and only with hand-held devices or with
drip irrigation.
Yes
4 Landscape -
Prohibit all
landscape
irrigation
0-5% There shall be no watering of any lawn
or landscaped area, except by use of
reclaimed water.
Yes
4 Other 0-1% The use of water shall be limited to
essential household, commercial,
manufacturing or processing uses only,
except where other uses may be allowed
by permit.
Yes
4.3 Operational Changes and Additional Mandatory Restrictions During shortage conditions, operations may be affected by supply augmentation or demand reduction responses. Rialto will consider their operational procedures when it completes its Annual Assessment.
Any additional mandatory restrictions implemented in response to the declaration of a shortage response stage, beyond the actions listed in Table 3 and Table 4 are listed in Rialto’s Ordinance No. 1560 provided in Attachment 1.
4.4 Emergency Response Plan
In 2021, Rialto completed a Risk and Resilience Assessment (RRA) and Emergency Response Plan (ERP) in accordance with America’s Water Infrastructure Act (AWIA) of 2018. The purpose of the RRA and ERP is to meet the AWIA compliance requirements and plan for long-term resilience of Rialto’s infrastructure. The RRA is an assessment of Rialto’s water system to identify critical assets and processes that may be vulnerable to human and natural hazards, and to identify measures that can be taken to reduce risk and enhance resilience from service disruption for the benefit of customers. The RRA identifies and characterizes both infrastructure-specific and system-wide vulnerabilities and threats and quantifies the consequences of disruption. The RRA also identifies various options (and constraints) in addressing and mitigating risk. The RRA, in conjunction with the Emergency Response Plan (ERP), charts a course for water system resilience. The RRA also provided various recommendations to increase reliability of Rialto’s system. Since critical pieces of infrastructure and specific vulnerabilities are detailed in the RRA and ERP, the contents of the document are confidential and for use by Rialto’s staff only. However, Rialto can confirm that these plans meet the requirements set forth by AWIA and evaluate seismic risks and mitigation actions to Rialto’s infrastructure.
In the event of a water shortage emergency resulting from equipment failure, power outage, or other catastrophe, Rialto is prepared to purchase emergency water supplies from nearby agencies while repairs or other remedial actions are underway. Rialto may also implement its four-stage plan for conservation, as described above, with either voluntary or mandatory reductions depending on the severity of the shortage. For severe disasters (Stage 4), mandatory water use reductions are specified. 390
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4.5 Seismic Risk Assessment and Mitigation Plan
Disasters, such as earthquakes, can and will occur without notice. As a part of the AWIA RRA and ERP, the City of Rialto has assessed the seismic risk and mitigation for water facilities.
The seismic hazards evaluated include fault rupture, liquefaction and seismic shaking and assessed the threat to critical facilities, including the water system. Rialto has identified a set of hazard mitigation actions that are intended to reduce the impact of hazard, including:
➢ Conduct a seismic analysis of all City‐ owned key facilities and retrofit vulnerable facilities. ➢ Consider locating wells outside of seismic hazard zones.
4.6 Shortage Response Action Effectiveness
Rialto has estimated the effectiveness of shortage response actions in Table 3 and Table 4 when data pertaining to such actions is available. It is expected that response actions effectiveness is also a result of successful communication and outreach efforts.
5.0 Communication Protocols
Rialto prioritizes effective communication, especially in times of a water shortage emergency. Rialto routinely communicates to customers about details on when a stage is announced. Communication actions may include bill inserts, handouts, informative flyers, and direct mail pieces to newspaper and bus shelter advertisements, news releases, social media outreach, and website content. Rialto continues to provide reminders about shortage stages and encourages conservation at all times.
6.0 Compliance and Enforcement
In the implementation of the water shortage contingency plan, the following penalties shall apply for any violation of the Rialto’s Ordinance, Number 1560 Sections 12.20.022, 12.20.023, 12.20.024, and
12.20.040: Water Conservation Requirements.
First Violation: Notice of Non-Compliance
A written "warning shall be issued for the first offense.
Second Violation: Warning of Penalties
A written warning notice of the future imposition of penalties that could be placed on the customer's water bill shall be issued for the second offense.
Third Violation: Surcharge
A surcharge of one hundred dollars shall be added to that billing for the third offense occurring within a one-year period.
Fourth Violation: Surcharge
A surcharge of three hundred dollars, and installation of a flow restricting device in the meter for a minimum of ninety-six hours (at customer's expense) shall be imposed for the fourth offense occurring within a one-year period. Said restricted flow shall meet minimum county health department's standards, if any have been established. If said ninety-six-hour period ends on a weekend or holiday, full service will be restored during the next business day.
Fifth Violation: Surcharge
A surcharge of five hundred dollars, and termination of water service at customer's expense for a two- day period shall be imposed for the fifth offense occurring within a one-year period. Prior to the 391
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termination of water service, the customer may request an administrative hearing pursuant to Section
1.10.050 of Ordinance No.1560.
7.0 Legal Authorities
To offset the prolonged effects of a drought period or other emergency, the City Council adopted Ordinance No. 1130 in December 1990. The ordinance provides water conservation measures in order to minimize the effect of a water shortage on the citizens of the community. The ordinance includes provisions that will significantly reduce the waste and inefficient use of water, thereby extending the available water resources required for the domestic and fire protection needs of the City and general public. Rialto adopted Ordinance No. 1560 in May, 2015, to update the sections regarding the four (4) stages that make up the water conservation requirements. Ordinance No. 1560 is included in Attachment 1.
7.1 Water Shortage Emergency Declaration
In accordance with CWC Section Division 1, Section 350 – Rialto shall declare a water shortage emergency condition to prevail within the area served by such distributor whenever it finds and determines that the ordinary demands and requirements of water consumers cannot be satisfied without depleting the water supply of the distributor to the extent that there would be insufficient water for human consumption, sanitation, and fire protection.
7.2 Local/Regional Emergency Declaration
If a water shortage is approaching, Rialto shall coordinate with any the cities and counties in its service area for the possible proclamation of a local emergency.
8.0 Financial Consequences of WSCP
To ensure Rialto customers comply with Ordinance No. 1560 and CWC Chapter 3.3 (Excessive Residential Water Use During Drought), additional costs may be incurred to monitor and enforce response actions. The incurred cost may vary depending on the shortage stage and duration of the water shortage emergency. To mitigate the financial impacts of a water shortage Rialto has a tiered rate schedule for water customers to encourage water conservation and provide the economic incentives to customers to use water efficiently.
9.0 Monitoring and Reporting
The water savings from implementation of the WSCP will be determined based on monthly production reports which are reviewed and compared to production reports and pumping statistics from prior months and the same period of the prior year. Under shortage conditions, these production reports could be prepared as often as daily. At first, the cumulative consumption for the various sectors (e.g., residential, commercial, etc.) will be evaluated for reaching the target level. Then if needed, individual accounts will be monitored. Weather and other possible influences may be accounted for in the evaluation.
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City of Rialto 15 Water Shortage Contingency Plan
10.0 WSCP Refinement Procedures
The WSCP is best prepared and implemented as an adaptive management plan. Rialto will use results obtained from their monitoring and reporting program to evaluate any needs for revisions. Potential changes to the WSCP that would warrant an update include, but are not limited to, any changes to trigger conditions, changes to the shortage stage structure, and/or changes to customer reduction actions.
Any prospective changes to the WSCP would need to be presented to Rialto’s Board for discretionary approval. Once discretionary approval has been granted, Rialto will hold a public hearing, obtain any comments and adopt the updated WSCP. Notices for refinement and the public hearing date will be published in the local newspaper in advance of any public meetings.
11.0 Plan Adoption, Submittal and Availability
Rialto adopted this WSCP with the 2020 IRUWMP. The 2020 IRUWMP and WSCP were made available for public review in May 2021 and a public hearing was held on June 22, 2021 to receive public input on the draft 2020 IRUWMP and the WSCP.
The Rialto City Council adopted the 2020 IRUWMP and the WSCP at a public meeting on June 22, 2021. The resolution of adoption is included as an attachment.
This WSCP was submitted to DWR through the WUEData portal before the deadline of July 1, 2021.
This WSCP will be available to the public on the City of Rialto web site.
If Rialto identifies the need to amend this WSCP, it will follow the same procedures for notification to cities, counties and the public as used for the 2020 IRUWMP and for initial adoption of the WSCP.
The WSCP will be presented for adoption to Rialto’s Board at a public City Council meeting. The Council may submit any comments prior to approval and adoption. The WSCP will be submitted to DWR at the same time as the 2020 Urban Water Management Plan. The WSCP will be made available to all staff, customers, and any affected cities, counties, or other members of the public at the Rialto office and online.
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City of Rialto 16 Water Shortage Contingency Plan
References
California Department of Water Resources. (2021). Urban Water Management Plan Guidebook 2020. Sacramento:
California Department of Water Resources.
Texas Living Waters Project. (2018). Water Conservation by the Yard: A Statewide Analysis of Outdoor Water Savings Potential. Austin: Texas Living Waters Project, Sierra Club, National Wildlife Federation. Retrieved from Texas Living Waters Project.
United States Environmental Protection Agency, Office of Water. (2002). Cases in Water Conservation: How Efficiency Programs Help Water Utilities Save Water and A void Costs. United States Environmental Protection Agency.
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Attachment 1: Rialto’s Ordinance No.
1560
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City of Rialto Water Shortage Contingency Plan
Attachment 2: Adoption Resolution
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RUA RESOLUTION NO. 04-21
A RESOLUTION OF THE UTILITY AUTHORITY OF THE CITY
OF RIALTO, CALIFORNIA, ADOPTING THE WATER
SHORTAGE CONTINGENCY PLAN
WHEREAS, the California Urban Water Management Planning Act, Water Code Section 10610 et seq. (the UWMP Act), mandates that every urban supplier of water providing water for municipal purposes to more than 3,000 customers or supplying more than 3,000 acre feet of water annually, prepare and adopt, in accordance with prescribed requirements, a Water Shortage Contingency Plan (WSCP); and
WHEREAS, the Rialto Utility Authority meets the definition of an urban water supplier for purposes of the UWMP Act; and
WHEREAS, the UWMP Act specifies the requirements and procedures for adopting such WSCP; and
WHEREAS, pursuant to recent amendments to the UWMP Act, urban water suppliers are required to adopt and electronically submit their WSCPs to the California Department of Water Resources by July 1, 2021; and
WHEREAS, the Rialto Utility Authority has prepared a WSCP in accordance with the UWMP Act and SB X7-7, and in accordance with applicable legal requirements, has undertaken certain coordination, notice, public involvement, public comment, and other procedures in relation to its WSCP; and
WHEREAS, the WSCP references and incorporates the provisions of the City of Rialto and Rialto Utility Authority’s Water Conservation Ordinance No. 1560 adopted on July 14, 2015; and WHEREAS, in accordance with the UWMP Act, the Rialto Utility Authority has prepared its WSCP with its own staff, with the assistance of consulting professionals, and in cooperation with other governmental agencies, and has utilized and relied upon industry standards and the expertise of industry professionals in preparing its WSCP, and has also utilized the California Department of Water DocuSign Envelope ID: 131BC6A5-1493-421D-8E0E-1BD35E03FE40 407
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Resources Guidebook for Urban Water Suppliers to Prepare 2020 Urban Water Management Plans, in preparing its WSCP; and
WHEREAS, in accordance with applicable law, including Water Code sections 10608.26 and 10642, and Government Code section 6066, a Notice of a Public Hearing regarding the Rialto Utility Authority’s WSCP was published within the jurisdiction of the Rialto Utility Authority on June 7, 2021, and June 14, 2021; and
WHEREAS, in accordance with applicable law, including but not limited to Water Code sections 10608.26 and 10642, a public hearing was held on June 22, 2021 at 6:30 PM, or soon thereafter, in the Council Chambers of the City of Rialto at 150 South Palm Avenue in Rialto, California in order to provide members of the public and other interested entities with the opportunity to be heard in connection with proposed adoption of the WSCP and issues related thereto; and WHEREAS, pursuant to said public hearing on the WSCP, the Rialto Utility Authority, among other things, encouraged the active involvement of diverse social, cultural, and economic members of the community within Rialto Utility Authority’s service area with regard to the preparation of the WSCP, encouraged community input regarding Rialto Utility Authority’s WSCP; and WHEREAS, the Rialto Utility Authority Board of Directors has reviewed and considered the purposes and requirements of the UWMP Act, the contents of the WSCP, and the documentation contained in the administrative record in support of the WSCP, and has determined that the factual analyses and conclusions set forth in the WSCP are legally sufficient; and WHEREAS, the Rialto Utility Authority Board of Directors desires to adopt the WSCP in order to comply with the UWMP Act.
NOW, THEREFORE, THE RIALTO UTILITY AUTHORITY OF THE CITY OF RIALTO DOES HEREBY FIND, DETERMINE, AND RESOLVE AS FOLLOWS:
Section 1: The WSCP is hereby adopted as amended by changes incorporated by the Rialto Utility Authority Board of Directors as a result of input received (if any) at the public hearing and ordered filed with the Secretary of the Rialto Utility Authority; Section 2: The Utilities Manager is hereby authorized and directed to include a copy of this Resolution in Rialto Utility Authority’s WSCP;
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Section 3: The Utilities Manager is hereby authorized and directed, in accordance with Water Code sections 10621(d) and 10644(a)(1)-(2), to electronically submit a copy of the WSCP to the California Department of Water Resources no later than July 1, 2021; Section 4: The Utilities Manager is hereby authorized and directed, in accordance with Water Code section 10644(a), to submit a copy of the WSCP to the California State Library, and any city or county within which the Rialto Utility Authority provides water supplies no later than thirty (30) days after this adoption date;
Section 5: The Utilities Manager is hereby authorized and directed, in accordance with Water Code section 10645, to make the WSCP available for public review at the Rialto Utility Authority’s offices during normal business hours and on the Rialto Utility Authority’s website no later than thirty (30) days after filing a copy of the WSCP with the California Department of Water Resources; Section 6:. The Utilities Manager is hereby authorized and directed, in accordance with Water Code Section 10635(b), to provide that portion of the WSCP prepared pursuant to Water Code Section 10635(a) to any city or county within which the Rialto Utility Authority provides water supplies no later than sixty (60) days after submitting a copy of the WSCP with the California Department of Water Resources;
Section 7:. The Utilities Manager is hereby authorized and directed to implement the WSCP in accordance with the UWMP Act and to provide recommendations to the Board of Directors regarding the necessary budgets, procedures, rules, regulations or further actions to carry out the effective and equitable implementation of the WSCP.
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PASSED APPROVED AND ADOPTED this 22nd day of June, 2021.
DEBORAH ROBERTSON, President
ATTEST:
BARBARA A. McGEE, Board Secretary
APPROVED AS TO FORM:
ERIC S. VAIL, Board Counsel
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STATE OF CALIFORNIA )
COUNTY OF SAN BERNARDINO ) ss
CITY OF RIALTO )
I, Barbara A. McGee, Board Secretary of the Rialto Utility Authority, do hereby certify that the foregoing Resolution No.04-21 was duly passed and adopted at a regular meeting of the Rialto Utility Authority of the City of Rialto held on the 22nd day of June, 2021.
Upon motion of Board Member Trujillo, seconded by Board Member Carrizales, the foregoing Resolution No. 04-21 was duly passed and adopted.
Vote on the motion:
AYES: Mayor Robertson, Mayor Pro Tem Scott, Council Member Trujillo, Carrizales and Perez
NOES: None
ABSENT: None
IN WITNESS WHEREOF, I have hereunto set my hand and the Official Seal of the City of Rialto this 23 day of June, 2021.
BARBARA A. MCGEE, BOARD SECRETARY
DocuSign Envelope ID: 131BC6A5-1493-421D-8E0E-1BD35E03FE40 411
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RESOLUTION NO.7736
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
RIALTO, CALIFORNIA, ADOPTING THE WATER SHORTAGE
CONTINGENCY PLAN
WHEREAS, the California Urban Water Management Planning Act, Water Code Section 10610 et seq. (the UWMP Act), mandates that every urban supplier of water providing water for municipal purposes to more than 3,000 customers or supplying more than 3,000 acre feet of water annually, prepare and adopt, in accordance with prescribed requirements, a Water Shortage Contingency Plan (WSCP); and
WHEREAS, the City of Rialto meets the definition of an urban water supplier for purposes of the UWMP Act; and
WHEREAS, the UWMP Act specifies the requirements and procedures for adopting such WSCP; and
WHEREAS, pursuant to recent amendments to the UWMP Act, urban water suppliers are required to adopt and electronically submit their WSCPs to the California Department of Water Resources by July 1, 2021; and
WHEREAS, the City of Rialto has prepared a WSCP in accordance with the UWMP Act and SB X7-7, and in accordance with applicable legal requirements, has undertaken certain coordination, notice, public involvement, public comment, and other procedures in relation to its WSCP; and WHEREAS, the WSCP references and incorporates the provisions of the City of Rialto’s Water Conservation Ordinance No. 1560 adopted on July 14, 2015; and WHEREAS, in accordance with the UWMP Act, the City of Rialto has prepared its WSCP with its own staff, with the assistance of consulting professionals, and in cooperation with other governmental agencies, and has utilized and relied upon industry standards and the expertise of industry professionals in preparing its WSCP, and has also utilized the California Department of Water Resources Guidebook DocuSign Envelope ID: 131BC6A5-1493-421D-8E0E-1BD35E03FE40 412
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for Urban Water Suppliers to Prepare 2020 Urban Water Management Plans, in preparing its WSCP; and
WHEREAS, in accordance with applicable law, including Water Code sections 10608.26 and 10642, and Government Code section 6066, a Notice of a Public Hearing regarding the City of Rialto’s WSCP was published within the jurisdiction of the City of Rialto on June 7, 2021, and June 14, 2021; and
WHEREAS, in accordance with applicable law, including but not limited to Water Code sections 10608.26 and 10642, a public hearing was held on June 22, 2021 at 6:30 PM, or soon thereafter, in the Council Chambers of the City of Rialto at 150 South Palm Avenue in Rialto, California in order to provide members of the public and other interested entities with the opportunity to be heard in connection with proposed adoption of the WSCP and issues related thereto; and WHEREAS, pursuant to said public hearing on the WSCP, the City of Rialto, among other things, encouraged the active involvement of diverse social, cultural, and economic members of the community within City of Rialto’s service area with regard to the preparation of the WSCP, encouraged community input regarding City of Rialto’s WSCP; and
WHEREAS, the City Council for the City of Rialto has reviewed and considered the purposes and requirements of the UWMP Act, the contents of the WSCP, and the documentation contained in the administrative record in support of the WSCP, and has determined that the factual analyses and conclusions set forth in the WSCP are legally sufficient; and WHEREAS, the City Council for the City of Rialto desires to adopt the WSCP in order to comply with the UWMP Act.
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF RIALTO DOES HEREBY FIND, DETERMINE, AND RESOLVE AS FOLLOWS:
Section 1: The WSCP is hereby adopted as amended by changes incorporated by the City Council for the City of Rialto as a result of input received (if any) at the public hearing and ordered filed with the City Clerk for the City of Rialto;
Section 2: The Utilities Manager is hereby authorized and directed to include a copy of this Resolution in City of Rialto’s WSCP;
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Section 3: The Utilities Manager is hereby authorized and directed, in accordance with Water Code sections 10621(d) and 10644(a)(1)-(2), to electronically submit a copy of the WSCP to the California Department of Water Resources no later than July 1, 2021; Section 4: The Utilities Manager is hereby authorized and directed, in accordance with Water Code section 10644(a), to submit a copy of the WSCP to the California State Library, and any city or county within which the City of Rialto provides water supplies no later than thirty (30) days after this adoption date;
Section 5: The Utilities Manager is hereby authorized and directed, in accordance with Water Code section 10645, to make the WSCP available for public review at the City of Rialto’s offices during normal business hours and on the City of Rialto’s website no later than thirty (30) days after filing a copy of the WSCP with the California Department of Water Resources; Section 6:. The Utilities Manager is hereby authorized and directed, in accordance with Water Code Section 10635(b), to provide that portion of the WSCP prepared pursuant to Water Code Section 10635(a) to any city or county within which the City of Rialto provides water supplies no later than sixty (60) days after submitting a copy of the WSCP with the California Department of Water Resources; Section 7:. The Utilities Manager is hereby authorized and directed to implement the WSCP in accordance with the UWMP Act and to provide recommendations to the City Council regarding the necessary budgets, procedures, rules, regulations or further actions to carry out the effective and equitable implementation of the WSCP.
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WHEREFORE, this Resolution is passed, approved and adopted this 22nd day of June, 2021.
DEBORAH ROBERTSON, Mayor
ATTEST:
BARBARA A. McGEE, City Clerk
APPROVED AS TO FORM:
ERIC VAIL, City Attorney
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STATE OF CALIFORNIA )
COUNTY OF SAN BERNARDINO ) ss
CITY OF RIALTO )
I, Barbara A. McGee, City Clerk of the City of Rialto, do hereby certify that the foregoing Resolution No.7736 was duly passed and adopted at a regular meeting of the City Council of the City of Rialto held on the 22nd day of June, 2021.
Upon motion of Councilmember Trujillo, seconded by Councilmember Carrizales, the foregoing Resolution No. 7736 was duly passed and adopted.
Vote on the motion:
AYES: Mayor Robertson, Mayor Pro Tem Scott, Council Member Trujillo, Carrizales and Perez NOES: None
ABSENT: None
IN WITNESS WHEREOF, I have hereunto set my hand and the Official Seal of the City of Rialto this 23rd day of June, 2021.
BARBARA A. MCGEE, CITY CLERK
DocuSign Envelope ID: 131BC6A5-1493-421D-8E0E-1BD35E03FE40 416
Mitigation Actions
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | F
Appendix F Mitigation Actions
F
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Rialto Drought Contingency Plan Appendix F
Mitigation Actions
DCP Project
# M itigation Action Name Mitigation Action Source Supply / System Project, Opportunity, or Ongoing Action? Priority Status Project Proponent Estimated Project Cost
101 Implement the Cactus Basin Recharge Project / Cons truct the Cactus Basin Recharge Pipeline 2020 IRUWMP Project List Rialto-Colton Groundwater Basin Project 1 Active/Ongoing San Bernardino Valley $ 7,700,000 102 Implement the recommendations in the Rialto Groundwater Management Plan (underway). DCP Drought Task Force Mitigation Actions Workshop Rialto-Colton Groundwater Basin Project 1 Active/Ongoing Rialto Basin Groundwater Council 103 Implement the City of Rialto Education and Engagement Plan DCP Drought Task Force Mitigation Actions Workshop Opportunity 1
104 Ongoing participation in the Rialto Basin Groundwater Council. DCP Drought Task Force Mitigation Actions Workshop Rialto-Colton Groundwater Basin Ongoing Action 1 105 Rialto Habitat Nature Center City of Rialto Capital Improvement Plan Rialto System Project 1 City of Rialto $ 8,200,000 106 Chino Well Rehab and Commissioning of Water Treatment City of Rialto Capital Improvement Plan Riverside North Groundwater Basin Project 1 City of Rialto $ 3,000,000 107 Develop agreement and increase capacity of Rialto/West Valley intertie for additional access to imported water supply.
DCP Drought Task Force Mitigation Actions
Workshop Imported Water Project 1 Preliminary
Concept
City of Rialto & West Valley
Water District
108 Rialto/West Valley agreement for West Valley Water Treatment Plant capacity / SWP use; supplemental supply for the City of Colton
DCP Drought Task Force Mitigation Actions
Workshop Imported Water Project 1 Preliminary
Concept
City of Rialto, City of Colton, &
West Valley Water District
109 Develop agreement and increase capacity of WVWD/Colton intertie for additional access to imported water supply.
DCP Drought Task Force Mitigation Actions
Workshop Imported Water Project 1 Preliminary
Concept
City of Colton & West Valley
Water District
110 Develop agreement and additional Rialto/Colton intertie for additional access to imported water supply.
DCP Drought Task Force Mitigation Actions
Workshop Imported Water Project 1 Preliminary
Concept
City of Rialto, City of Colton, &
West Valley Water District
111
River Ranch Development: install two large basins for recharge, to be used in dry years. Additional development in northern portion of Basin to be led by the City and operated by San Bernardino Valley
DCP Drought Task Force Mitigation Actions
Workshop Lytle Groundwater Basin Project 1 Construction San Bernardino Valley $ 3,000,000 112 Evaluate opportunities to recharge water in Lytle Groundwater Basin DCP Drought Task Force Mitigation Actions Workshop Lytle Groundwater Basin Project 1
113 Complete an in-depth study to better characterize opportunities for the Basin (SBB Groundwater Optimization Study).
DCP Drought Task Force Mitigation Actions
Workshop Bunker Hill Groundwater Basin Project 1 Active/Ongoing San Bernardino Valley & Western
Water
114 Program for the Expansion of Recharge Capacity (PERC) (Active Recharge Projects) 2020 IRUWMP Project List Bunker Hill Groundwater Basin Project 1 Active/Ongoing San Bernardino Valley Water Conservation District
115 Bunker Hill Conjunctive Use Project 2020 IRUWMP Project List Bunker Hill Groundwater Basin Project 1 Design San Bernardino Valley & Other Partners $ 14,200,000
116 Regional Recycled Water Recharge Pipeline 2020 IRUWMP Project List Bunker Hill Groundwater Basin Project 1 Construction San Bernardino Valley 117 Construct IX for NO2 at Well W16 West Valley Water District 2020 Capital Improvement Plan Rialto-Colton Groundwater Basin Project 1 West Valley Water District $ 5,716,015 118 Construct IX for NO2 at Well W22A West Valley Water District 2020 Capital Improvement Plan Rialto-Colton Groundwater Basin Project 1 West Valley Water District $ 5,716,015 119 Rialto-Colton Basin: Well W54 RT break tank installation West Valley Water District 2020 Capital Improvement Plan Rialto-Colton Groundwater Basin Project 1 West Valley Water District $ 150,000 120 Bunker Hill Basin: Construct Wells W43, W44, W45, W46 West Valley Water District 2020 Capital Improvement Plan Bunker Hill Groundwater Basin Project 1 West Valley Water District $ 12,000,000 121 Consider Rialto-Colton Basin Recharge via injection wells. DCP Drought Task Force Mitigation Actions Workshop Rialto-Colton Groundwater Basin Opportunity 1 Preliminary Concept
122 Continued regional strategy focused on recharging during wet years for use in dry years. DCP Drought Task Force Mitigation Actions Workshop Bunker Hill Groundwater Basin Ongoing Action 1 Active/Ongoing 123 Continue to implement the Upper Santa Ana River Habitat Conservation Plan. DCP Drought Task Force Mitigation Actions Workshop Bunker Hill Groundwater Basin Ongoing Action 1 Active/Ongoing 124 Sites Reservoir to add additional dry-year storage. DCP Drought Task Force Mitigation Actions Workshop Imported Water Project 1 Planning Sites Project Authority $ 3,930,000,000 125 Well rehabilitation and replacement DCP Drought Task Force Mitigation Actions Workshop Other Project 1
126 Implement blending or treatment DCP Drought Task Force Mitigation Actions Workshop Other Project 1
127 Construct additional interconnections DCP Drought Task Force Mitigation Actions Workshop Other Project 1
128 Seek grant funding for infrastructure projects DCP Drought Task Force Mitigation Actions Workshop Other Opportunity 1
129 Review and Update Existing Agreements DCP Drought Task Force Mitigation Actions Workshop Other Opportunity 1
130 Develop alternative supply sources. DCP Drought Task Force Mitigation Actions Workshop Other Opportunity 1
131 Continue to advocate for improved imported water reliability / Delta Conveyance Project DCP Drought Task Force Mitigation Actions Workshop Imported Water Ongoing Action 1 Planning California Department of Water Resources
132 Develop implementation and enforcement tools to achieve required demand reduction savings. DCP Drought Task Force Mitigation Actions Workshop Other Opportunity 1
133 Develop and implement regional and local communication plans. DCP Drought Task Force Mitigation Actions Workshop Other Opportunity 1
134 Future Priority 1 Project – any project that mitigates a Vulnerability with a Risk Score of 1 All Project 1 201 Advanced Meter Infrastructure (AMI) City of Rialto Capital Improvement Plan Rialto System Project 2 Planning City of Rialto $ 8,000,000 202 Install Rialto Well 3A with arsenic treatment to replace Rialto Well 3. City of Rialto Capital Improvement Plan Lytle Groundwater Basin Project 2 Design City of Rialto $ 4,200,000 203 Additional regional distribution facilities to convey water to agencies located throughout the region. DCP Drought Task Force Mitigation Actions Workshop Bunker Hill Groundwater Basin Opportunity 2 Preliminary Concept San Bernardino Valley
204 Coordinate efforts with land developers to implement small-scale recharge. DCP Drought Task Force Mitigation Actions Workshop Lytle Groundwater Basin Opportunity 2 Active/Ongoing 418
Rialto Drought Contingency Plan Appendix F
Mitigation Actions
DCP Project
# M itigation Action Name Mitigation Action Source Supply / System Project, Opportunity, or Ongoing Action? Priority Status Project Proponent Estimated Project Cost
205 Unline canals in strategic areas to provide recharge opportunities. DCP Drought Task Force Mitigation Actions Workshop Lytle Creek Surface Water Opportunity 2
206 Basin Management / Coordinate with Management of the SBB DCP Drought Task Force Mitigation Actions Workshop Riverside North Groundwater Basin Ongoing Action 2 All Basin Users 207 Equip existing wells with treatment systems. DCP Drought Task Force Mitigation Actions Workshop Riverside North Groundwater Basin Project 2
208 Riverside North Aquifer Storage & Recovery Project San Bernardino Valley Website Riverside North Groundwater Basin Project 2 Design San Bernardino Valley $ 45,000,000 209 Central Feeder and EBX Intertie Project 2020 IRUWMP Project List Imported Water Project 2 Design San Bernardino Valley $ 2,000,000 210 Foothill Pipeline Infrastructure Improvements 2020 IRUWMP Project List Imported Water Project 2 Planning San Bernardino Valley 211 Foothill Pipeline Interior Relining 2020 IRUWMP Project List Imported Water Project 2 Planning San Bernardino Valley 212 Delta Conveyance Project will improve water quality once implemented. DCP Drought Task Force Mitigation Actions Workshop Imported Water Project 2 Planning
213 Lylte Creek Watershed Assessment & Restoration 2020 IRUWMP Project List Lytle Creek Surface Water Project 2 Water Resources Institute 214 Well W8A Arsenic Treatment West Valley Water District 2020 Capital Improvement Plan Lytle Groundwater Basin Project 2 West Valley Water District $ 3,288,359 215 Well W36 Arsenic Treatment West Valley Water District 2020 Capital Improvement Plan Lytle Groundwater Basin Project 2 West Valley Water District $ 3,550,000 216 Well W34B Arsenic Treatment West Valley Water District 2020 Capital Improvement Plan Lytle Groundwater Basin Project 2 West Valley Water District $ 2,920,864 217 Well W35C Arsenic Treatment West Valley Water District 2020 Capital Improvement Plan Lytle Groundwater Basin Project 2 West Valley Water District $ 2,920,864 218 Install IX for NO2 at Well W18A West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 7,668,839 219 Install IX for NO2 at Well W41 West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 550,000 220 Install IX for Nitrate and Perchlorate at Well W42 West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 9,246,213 221 Install IX for Nitrate and Perchlorate at Well W29A West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 7,208,559 222 Install IX for Nitrate and Perchlorate at Well W40 West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 7,208,559 223 Install IX for Nitrate and Perchlorate at Well W51 West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 11,311,441 224 Install IX for Nitrate and Perchlorate at Well W52 West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 8,690,777 225 Install IX for Nitrate and Perchlorate at Well W50 West Valley Water District 2020 Capital Improvement Plan Riverside North Groundwater Basin Project 2 West Valley Water District $ 7,208,559 226 Equip and install treatment at W39. West Valley Water District 2020 Capital Improvement Plan Chino Basin Project 2 West Valley Water District $ 9,334,214 227 Implement larger-scale stormwater capture and recharge projects when possible. DCP Drought Task Force Mitigation Actions Workshop Imported Water Opportunity 2 Preliminary
Concept
228 Waterman Turnout & Hydroelectric Plant DCP Drought Task Force Mitigation Actions Workshop Other Project 2 Construction
229 Identify current water system infrastructure, establish a rehabilitation/replacement schedule, and long-range financial structure.
DCP Drought Task Force Mitigation Actions
Workshop Bunker Hill Groundwater Basin Project 2
230 Purchase backup generators and/or battery storage. DCP Drought Task Force Mitigation Actions Workshop Other Project 2
231 Analyze system data to clearly identify highest-risk areas/areas with redundance needs, etc..
Conduct a consequence of failure prioritization.
DCP Drought Task Force Mitigation Actions
Workshop Other Project 2
232 Reservoir seismic upgrades DCP Drought Task Force Mitigation Actions Workshop Other Project 2
233 Distribution pipeline replacement DCP Drought Task Force Mitigation Actions Workshop Other Project 2
234 Evaluate rate structures DCP Drought Task Force Mitigation Actions Workshop Other Project 2
235 Future Priority 2 Project – any project that mitigates a Vulnerability with a Risk Score of 2 All Project 2 301 Rialto Landscape Ordinance Update DCP Drought Task Force Mitigation Actions Workshop Rialto System Project 3 Active/Ongoing City of Rialto 302 Continue monitoring efforts. DCP Drought Task Force Mitigation Actions Workshop Rialto-Colton Groundwater Basin Ongoing Action 3 Active/Ongoing 303 Continue to implement the Four Party Implementation Agreement. DCP Drought Task Force Mitigation Actions Workshop Rialto-Colton Groundwater Basin Ongoing Action 3 304 Continue to implement the Cooperative Agreement to Protect Water Quality and Encourage the Conjunctive Uses of Imported Water in the Santa Ana River Basin DCP Drought Task Force Mitigation Actions
Workshop Imported Water Ongoing Action 3 Active/Ongoing 305 Service Line Replacement, Hydrant Laterals, for Palm, Orange, Olive, and Date Between Foothill to the Train Tracks (Part 2) City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 5,500,000 306 Service Line Replacements on South Alice, South Palm, West Godden, and Alu Streets City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 1,200,000 307 Main and service line replace; Bonnie View between Acacia and Eucalyptus City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 2,400,000 308 Mainline Valve Replacement City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $250,000 / Year 309 Cedar Reservoir 2, Overhall, and Dome Preservation City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 1,000,000 310 4" South Oakdale and South Marcella between East Rialto Ave and Allen St City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 3,000,000 419
Rialto Drought Contingency Plan Appendix F
Mitigation Actions
DCP Project
# M itigation Action Name Mitigation Action Source Supply / System Project, Opportunity, or Ongoing Action? Priority Status Project Proponent Estimated Project Cost
311 Mainline and Service Line, Hydrant Laterals, and Mainline Replacement Below Etiwanda between Lilac and Sycamore Streets: Cornell and Victoria City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 2,500,000 312 Service Line Replacement, Hydrant Lateral for Woodcrest, Yucca, Miramonte, Arrowhead, and Althea City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 1,300,000 313 WWTP Electrical Upgrades City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 20,620,000 314 SCADA Upgrades to Lift Stations City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 750,000 315 Installation of fourth Disk Filter City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 500,000 316 Aged Water Main Replacement Etiwanda from Riverside to Eucalyptus (Pavement Project) City of Rialto Capital Improvement Plan Rialto System Project 3 Design City of Rialto $ 6,700,000 317 Service Line Replacement between Cedar and Larch below Etiwanda on Streets Victoria, Cornell, Rosewood, Church, and Folk City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 2,200,000 318 Service Line Replacement, Hydrant Laterals for Palm, Orange, Olive, Date Between Foothill to Train Tracks (Part 1) City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 3,300,000 319 Backup Generators for Cactus, Lilac, and Ayala Lift Stations City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 900,000 320 Pressure Relief Valves (PRVs) Zone 2 to Zone 3 City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 250,000 321 Service Line Replacement, Hydrant Laterals, and Mainline Replacement of Jackson between Sycamore to Pepper including Mulberry, Chestnut, Mesa, Birch, and Jackson City of Rialto Capital Improvement Plan Rialto System Project 3 City of Rialto $ 5,500,000 322 Well W7 Rehab and Retest West Valley Water District 2020 Capital Improvement Plan Lytle Groundwater Basin Project 3 West Valley Water District $ 50,000 323 16 MGD Expansion of the WTP West Valley Water District 2020 Capital Improvement Plan Imported Water Project 3 West Valley Water District $ 71,747,120 324 Zone 8 Reservoir Replacement West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 4,080,000 325 Lord Ranch Aeration Tank West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 1,905,000 326 Bunker Hill Aeration Tank West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 1,905,000 327 Lord Ranch Pump Station West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 3,000,000 328 New Zone 7 Pump Station West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 4,091,000 329 New Bunker Hill Supply Pump Station West Valley Water District 2020 Capital Improvement Plan Bunker Hill Groundwater Basin Project 3 West Valley Water District $ 7,406,000 330 Property Acquisition for Reservoir R3-4 (1.5 acres) West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 523,000 331 Property Acquisition for Reservoir R6-6 (1.5 acres) West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 523,000 332 Property Acquisition for Bunker Hill Supply West Valley Water District 2020 Capital Improvement Plan Bunker Hill Groundwater Basin Project 3 West Valley Water District $ 1,300,000 333 R7-5 Reservoir Site Investigation West Valley Water District 2020 Capital Improvement Plan WVWD System Project 3 West Valley Water District $ 59,000 334 Drill / redrill deeper wells and/or reduce pumping. DCP Drought Task Force Mitigation Actions Workshop Other / All Sources Project 3
335 Consider a study to better characterize subsidence. DCP Drought Task Force Mitigation Actions Workshop Rialto-Colton Groundwater Basin Project 3
336 Consider a study to better characterize subsidence. DCP Drought Task Force Mitigation Actions Workshop Bunker Hill Groundwater Basin Project 3
337 City of San Bernardino Tertiary Treatment System 2020 IRUWMP Project List Bunker Hill Groundwater Basin Project 3 Construction San Bernardino Municipal Water Department
338 Consider a study to better characterize subsidence. DCP Drought Task Force Mitigation Actions Workshop Lytle Groundwater Basin Project 3
339 Consider a study to better characterize subsidence. DCP Drought Task Force Mitigation Actions Workshop Riverside North Groundwater Basin Project 3
340 Future Priority 3 Project – any project that mitigates a Vulnerability with a Risk Score of 3 All Project 3 420
Urban Water Use Objectives Roadmap
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | G
Appendix G Urban Water Use
Objectives Roadmap
G
421
ROADMAP PG# COMPONENT STANDARD/ACTION RESPONSIBILITY RESOURCE 2024 2025 2026 2027 2028 2029 2030 2035 >2035 3-1 Residential Indoor gpcd Informational - Use Standard Water Code 10609.4 55 47 42 3-2 Population Estimate Utilities Division, Nicole Hemmans, Senior Administrative Analyst Census/ACS, EAR, or Other X X X X X X X X X 3-4 Residential Outdoor Landscape Efficiency Factor (LEF) for pre-2019 Customers Informational - Use Standard SWRCB 0.8 0.63 0.55 3-4 Residential Outdoor LEF for post-2019 Customers Informational - Use Standard SWRCB 0.55 3-5 Residential Outdoor- Net Evapotranspiration (ETo) Utilities Division, Nicole Hemmans Senior Administrative Analyst Data from State or Other X X X X X X X X X 3-5 Residential Outdoor- Irrigated “II” Area Utilities Division, Nicole Hemmans Senior Administrative Analyst Data from State or Other X X X X X X X X X 3-5 Residential Outdoor- Potentially Irrigated “INI” Area Allowance Informational - Use Standard SWRCB 0-20% 0% 3-5 Residential Outdoor- INI Area Utilities Division, Nicole Hemmans Senior Administrative Analyst Data from State or Other X X X X X X X X X 3-4 Residential Outdoor- LEF for Special Landscape Areas (SLA) Informational - Use Standard SWRCB 1 3-5 Residential Outdoor -SLA Area Utilities Division, Nicole Hemmans Senior Administrative Analyst Data from State or Other X X X X X X X X X
CII DIM
7-3 Identify CII Mixed Use Meters (MUMs) for
DIMs Conversion or In-lieu Tech (>500,000 gal)
Veolia Customer Service & Operations Supplier X
4-2 MUM>DIM Landscape Area Measurement (LAM) & Budget Estimate Veolia Customer Service & Operations Data from State, Supplier or Other X 20%
40% 60% 80% 100%
7-3 MUM>DIM Conversion or In-lieu Tech Implementation Veolia Operations 20% 40% 60% 80% 100% 4-1 CII LEF for pre-2019 Customers Informational - Use Standard SWRCB Actual Deliveries in EAR 0.8 0.63 0.45 4-1 CII LEF for post-2019 Customers Informational - Use Standard SWRCB 0.45 4-1 CII LEF- Special Landscape Area (SLA) Informational - Use Standard SWRCB 1 4-2 CII-SLA Area Identification & Measurement
Utilities Division, Nicole Hemmans, Senior Admin-
istrative Analyst and Veolia, Robert Lee, Customer
Service Manager
Data from State,
Supplier or Other X X X X X X X X X
WATER LOSS COMPLIANCE REPORTING
5-2 Water Loss Compliance Reporting Veolia, Stephanee Valencia, Operations Supervisor Water Code Section 982/ State Standards X X ✔ X ✔ X ✔ X ✔
X ✔ X ✔ X ✔ X ✔
CII PERFORMANCE MEASURES - NOT INCLUDED IN UWUO
7-2 All CII- Classification (18+ Categories) Veolia, Robert Lee, Customer Service Manager Supplier & State/ENERGYSTAR X 20% 40% 60% 80% 100% 7-1 CII BMP Implementation for Top 20% (in each of 18+ classifications) and 2.5% of all CII 1 BMP per 5 categories for Top 20% & 2 BMPs for top 2.5% Veolia, Robert Lee, Customer Service Manager,
Utilities Department and Nicole Hemmans, Senior
Administrative Analyst
Supplier X 20% 40% 60% 80% 100%
7-5 ID Disclosable Buildings and Provide Water Use to Customer Veolia, Robert Lee, Customer Service Manager Supplier Data, U.S. EPA ENER-
GYSTAR, Section 1681 of the
CA Code of Regulations
X 20% 40% 60% 80% 100%
7-6 Ban CII Non-Function Turf Irrigation City of Rialto City Council, Utilities Department, Toyasha Sebbag, Assistant to the City Manager AB 1572 X
STATE ENFORCEMENT
1-7 UWUO Enforcement- Informational Orders (2024),
Written Notices (2025), & Conservation Orders (2026)
State Water Code section 1846 or
1846.5 ✔ ✔ X ✔
X Reporting Due ✔ Reporting/Data can be used for compliance measuremente First Deadline for complianceUWUO Regulation Timeline and Roadmap Overview 422
Urban Water Use Objectives
(UWUO) Roadmap
City of Rialto
Drought Contingency Plan
January 2024
423
Background and Purpose
This Urban Water Use Objectives (UWUO) Roadmap was developed in collaboration with City and RWS staff during a workshop conducted in September 2023 as part of the Drought Contingency Plan development process. These slides have been adapted from the workshop discussions to create an actionable UWUO Roadmap to inform and guide staff towards UWUO compliance. These slides are based on the draft UWUO regulations as of January 2024 and provide supplementary detail for each of the components on the one-page summary of UWUO actions (shown on the next slide).
Achieving UWUO standards will support long term drought mitigation through demand reduction. The DCP Mitigation Action 132 will build from this UWUO Roadmap to develop implementation and enforcement tools to achieve required demand reductions.
424
425
Preliminary Action Plans
4 This Roadmap includes a set of
Preliminary Action Plans for each
action that will be needed to
comply with the UWUO
regulations. It provides the
purpose of each action, as well as
considerations and options for the
City/RWS to inform future
decisions. The section on the
right side of each slide
summarizes the timeline and
priority of the action and the
specific steps that various parties
will take to help complete this
action. 426
Contents
Regulations Overview
and Timeline
Rialto UWUO Status
Residential UWUO
Compliance
1 2
3 CII UWUO
Compliance
Water Loss
UWUO
Compliance
UWUO
Adjustments
4 5
6 CII Performance
Measures
Annual Water
Use Report
UWUO Roadmap
References
7 8
9 10
Click to
navigate 427
Abbreviations
AFY = Acre feet per year
AWUR = Annual Water Use Report (AWUR)
BMP = Best Management Practice
CII = Commercial, Industrial, Institutional
DIM = Dedicated Irrigation Meter
DWR = CA Department of Water Resources
EAR = Electronic Annual Report
ET0 = Reference Evapotranspiration
GPCD = Gallons Per Capita (Persons) Per Day... Note
different kinds of GPCD, including Total, Residential and Residential Indoor
HOA = Homeowners Association
II = Irrigable Irrigated
INI = Irrigable Not Irrigated
LAM = Landscape Areas Measurement
LEF= Landscape Efficiency Factor
MUM = Mixed Use Meters
MWELO= Model Water Efficiency Landscape Ordinance
PM = Performance Measures
RW = Recycled Water
SLA = Special Landscape Areas
SWRCB = CA State Water Resources Control Board
TDS = Total Dissolved Solids
UWUO= Urban Water Use Objective
428
1. Regulations
Overview and Timeline
429
Making Conservation a Way of Life
Regulatory Framework
1-1
DWR regulation
recommendations:
Fall 2022
UWUO
Urban Water
Use Objective
AWUR
Annual Water
Use Report
CII PM
Commercial,
Industrial &
Institutional
Performance
Measures
Draft SWRCB
regulations:
March & Aug 2023
430
Regulation Components
1-2
The regulations have 3 primary components,
which are inter-related:
• a numeric UWUO calculation
• performance measures for CII indoor use
(which is not included in the UWUO
calculation)
• an Annual Water Use Report to track and
report progress toward meeting the
requirements
This graphic on each slide of the Roadmap is
used to identify which component the content
is related to.
UWUO
Urban Water Use
Objective
AWUR
Annual Water Use
Report
CII PM
Commercial,
Industrial &
Institutional
Performance
Measures
431
1-3
Sept
2023
Oct
2023
Nov
2023
Jun–Aug
2024
Jan
2024
Oct
2024
Dec
2023
Jan
2025
Aug
2023
1st Public Comment Period
Aug 18 – Oct 17
Public Hearing/
Workshop
Oct 4
“Interim”
Annual Water
Use Report Due
Jan 1, 2024
Consideration for
Adoption
Summer 2024
Rule Effective
(If adopted)
Oct 1, 2024
Annual progress
reported every
January
2025→2035
Making Conservation a Way of Life
Next Steps
UWUO
AWUR
CII PM
432
Urban Water Use
Objective Calculation
1-4
Supplier updates UWUO
calculation annually and
compares to prior year
Excluded from UWUO: CII Indoor Use, Apparent Water Losses, Other Uses Indoor Residential
Standard
Outdoor Residential
Standard
Commercial,
Industrial, Institutional
(CII) Landscape
Standard
Water Loss
Standard
Adjustments
(if applicable)
+ + + +
2020 - 2035
Calculation includes increasingly stringent requirements 433 1-5
Additional CII Performance Measures
(PM) Excluded from UWUO
Identify all
disclosable
buildings in
service area
(>50,000 sq. ft.)
Ban the
irrigation of
non-functional
turf on CII
landscapes
Jan 1
2025
July 1
2025
20% by
2026
60% by
2028
100% by
2030
• Classify all CII customers in 18 specific
& 4 general categories
• Identify all CII large landscapes
(>500k gal) for Dedicated Irrigation
Meter (DIM) or equivalent/in-lieu
measures
• Design and implement Best
Management Practices (BMPs)
434
1. Calculate UWUO
2. Calculate actual water use for
the prior year
3. Describe progress toward
meeting the UWUO
1-6
Annual Water Use Report (AWUR)
due starting January 2024
4. Document progress on CII PM
Information Needed:
• Info from other State reports
• Supporting info for incremental CII progress
• Supporting info for any adjustments
435
UWUO Enforcement Timeline
1-7
Jan 1, 2024* Jan 1, 2025 Jan 1, 2026 Nov 1, 2027
FY 22/23 Water Use
The State Board may
issue informational orders
pertaining to water
production, water use,
and water conservation
to an urban retail
supplier that does not
meet its UWUO.
*Regulation will not be finalized by this date
FY 23/24 Water Use
The State Board may
issue written notices to an
urban retail supplier that
does not meet its UWUO.
May request that the
supplier address areas of
concern in its next annual
report.
FY 24/25 Water Use
The State Board may
issue a conservation
order to an urban retail
supplier that does not
meet its UWUO.
The State Board may
issue civil liability (fines)
for a violation of the
regulation.
UWUO
AWUR
CII PM
436
2. Rialto UWUO
Preliminary Compliance Status
437
50 66
52 69 68
0 50
100
150
200
0 2,000
4,000
6,000
8,000
10,000
2017 2018 2019 2020 2021
GPCD
AFY
Total GPCD Residential GPCD Residential Indoor GPCD
Rialto Total and Residential Water Use
2-1
2017 2018 2019 2020 2021
Population 54,453 54,453 54,453 54,453 54,453
Total Use (AFY) 9,055 9,254 8,555 9,418 9,302
Total GPCD 148 152 140 154 153
Residential Use (AFY) 5,634 5,793 5,546 6,250 6,122
Residential GPCD 91 94 90 101 99
Residential % of Total 62% 63% 65% 66% 66%
Indoor Use (%) Using
Min Month Method 54% 70% 57% 68% 68%
Residential Indoor Use
(AFY) 3,050 4,045 3,145 4,237 4,173
Residential Indoor GPCD 50 66 52 69 68
Data Source: Electronic Annual Reports/ State Water Board Total Use
Residential Use (AFY)
Residential Indoor Use (AFY)
438
Preliminary UWUO Compliance Snapshot
2-2
“Current” vs. UWUO
"Current" Use
(2017-2019)
6,812 AFY
-
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
2025 UWUO 2030 UWUO 2035 UWUO
Water Use, AFY
Real Water Loss
CII DIM*
Outdoor Residential
Indoor Residential
Current Use (2017-19)
Reduce by
22 AFY Reduce by
971 AFY
Reduce by
1,274 AFY
*Assumes CII DIM has same %
reductions as Outdoor
Residential 439
Preliminary UWUO Compliance Snapshot
2-3
“Current” Use
(2017-19)
2025
UWUO
Over/
Under
2030
UWUO
Over/
Under
2035
UWUO
Over/
Under
Indoor Residential 3,565 2,867 698 2,562 1,003 2,562 1,003 Outdoor Residential* 2,093 3,030 -937 2,386 -293 2,083 10 CII DIM* 647 647 0 647 0 647 0
Real Water Loss 507 246 261 246 261 246 261
Potable Reuse Bonus Incentive 0 0 0 0 0 0 0
Total 6,812 6,790 22 5,841 971 5,538 1,274
* Assumes 20% of Irrigable Not Irrigated (INI) area can be added to the UWUO through 2027 **Assumes CII DIM has same % reduction as Outdoor Residential “Current” vs. UWUO
Based on the current draft regulations and the State’s UWUO online estimator, Rialto would need to achieve water use reductions of 971 AFY by 2030 and 1,274 AFY by 2035. Based on UWUO targets for each category of use, it appears that the Outdoor Residential is already well below the target and the Indoor Residential category has the most potential for reduction, but compliance is measured based on total water use.
440
Assess and implement appropriate
compliance strategy, programs & policies
PRELIMINARY ACTION PLANRESIDENTIAL & CII ACTIONS
DESCRIPTION
Establish programs and policies to achieve future
UWUO & CII PM compliance.
(DCP Mitigation Action 132)
TIMELINE PRIORITY
Start by 2025 and
implement through
2030/35
Medium
RESOURCES ROLE
RWS Customer
Service
Provide support to
determine most
appropriate actions.
RWS/Veolia
Operations
Provide support to
determine most
appropriate actions and
assist in implementation.
Utilities
Identify potential actions
to achieve required
reductions and comply
with UWUO, present
options to Water
Subcommittee.
Other
Leverage regional
resources. Coordinate to
describe programs and
policies in the AWUR,
when needed.
PURPOSE
Support achieving future UWUO and CII PM compliance.
CONSIDERATIONS
• Develop a compliance strategy based on any of the following:
• preliminary estimates and in-house determination of appropriate water use efficiency BMPs
• previous conservation plan’s unimplemented elements/BMPs or recommendations, or other available reports/studies (CalWEP, WRF)
• hire a consultant to develop a detailed water use efficiency study • Implement programs and policies for tracking and incorporating new development data into UWUO and necessary datasets. Work with land use planning agencies/department(s) to develop a process to:
• Ensure new development meets UWUO guidelines, MWELO, and compliance for new construction
• Track new development and incorporate information to update UWUO • Determine if a new customer should install a DIM/equivalent technology or measure landscape area
• Implement programs and policies for tracking and estimating effectiveness of implemented BMPs and UWUO actions
2-4 441
UWUO Compliance Details and
Preliminary Action Planning
442
3. Residential UWUO Standards
INDOOR & OUTDOOR
Commercial,
Industrial, Institutional
Landscape Standard
Indoor Residential
Standard
Outdoor Residential
Standard
Water Loss
Standard
Adjustments
(if applicable)
+ + + +
443
Indoor Residential Standard
3-1
2020 55 gpcd
2025 47 gpcd
2030 42 gpcd
× × =
Residential
Indoor Standard
gallons per capita
per day (gpcd)
Population
Number of people in
supplier’s service area
365
Number of days
in the year
Residential
Indoor Budget
Gallons Per Year
444
Calculate population and apply to standard
3-2
DESCRIPTION
Consider population methods used for various
reports and select method for UWUO.
TIMELINE PRIORITY
Annual High
RESOURCES ROLE
RWS Customer
Service
Provide data to
WaterView for updates
RWS/Veolia
Operations
Incorporate updated
population into existing
reporting
Utilities Calculate population
and provide to RWS
Eagle Aerial
Update WaterView
based on Customer
Service data
Other
STATUS
WaterView Updates – Monthly
Population Estimate - Annually
PRELIMINARY ACTION PLANINDOOR RESIDENTIAL ACTIONS
PURPOSE
Required for standard calculation
CONSIDERATIONS
• Determine best source/method to use. Where else is population reported and do calculation methods need to be aligned?
• WaterView, DWR tool or GIS options (see next slide for details)
OPTIONS
• Review DWR’s landscape data for
inclusion/exclusion of group quarters
parcels→ adjust population estimate
accordingly
• Consider Variances (>5% of UWUO):
• Significant use of evaporative
coolers
• Significant fluctuations in seasonal
population
445
Calculate population and apply to standard
24 INDOOR RESIDENTIAL ACTIONS
• Sources to calculate population:
• Note: In past years, the City has used the eAR population value. This value has not been recently updated and does not include recent growth.
Tool Considerations
Estimated Population
2020 2023
WaterView
• Data refinement within WaterView required to accurately reflect City population/water budgets.
• Potentially update WaterView assumptions with City sewer data on persons per household/account
• Website: https://login-
spatialstream.prod.lightboxre.com/MemberPages/Login.aspx?ReturnUrl=%2fmemb erpages%2fdefault.aspx%3fma%3dWVRIALTO&ma=WVRIALTO
N/A 56,189
DWR Population
Tool
• Based on latest Census* data and number of connections. 2020 Census data not currently loaded.
• Can use historic persons per connection output from DWR Tool (4.55) and apply to City number of connections.
• Website: https://wuedata.water.ca.gov/secure/login_auth.asp 55,860* N/A
GIS Tools
• Using GIS, determine population from City service area boundary and 2020 Census data. Based on 2020 Census and 2020 number of connections, a revised 2020 persons per connection factor is 5.25.
• Applied SCAG estimated growth rate for 2020-2025 to obtain 2023 estimate. 57,171 59,479
3-3446
Outdoor Residential Standard
3-4
2020 0.80
2030 0.63
2035 0.55
Post-2019
Customers
Pre-2019
Customers
0.55 Data from DWR
or supplier
Post-2019 &
SLA Customers
Pre-2019
Customers
• Supplier estimate
(optional)
• Future DWR data
availability date
unknown
× × =
Residential
Outdoor Standard
Landscape Efficiency
Factor (LEF)
Net ETo
Inches per year
Reference ET– Effective
precipitation
Landscape Area
Square feet of
Irrigable Area
Unit Conversion
Factor Residential
Outdoor Budget
(Gallons Per Year)
× 0.62
Special
Landscape
Area (SLA)
Customers
1.0 447
Calculate outdoor allocation
26 PRELIMINARY ACTION PLANOUTDOOR RESIDENTIAL ACTIONS
DESCRIPTION
Collect data and multiply the LEF, net ETo and
Landscape Area.
TIMELINE PRIORITY
12/2024 High
RESOURCES ROLE
RWS Customer Service
Assist in identifying SLAs.
Review cemetery & parks
accounts & classify as CII
for larger allocation.
Pair state data with
rates/multi-classifications
per account within billing
database.
Utilities
Compile ETo data (either
from the State or other
source).
Confirm appropriate
irrigated & potentially
irrigated areas, based on
State data. Develop
outdoor budgets.
Coordinate with Eagle
Aerial/calculate II and INA
areas.
Identify SLAs.
Eagle Aerial
Pending irrigated area
review, update budgets in
WaterView.
PURPOSE
Required for standard calculation.
CONSIDERATIONS
• 2024 minimum requirement: Use Landscape Area Measurement (LAM) and net ETo data provided by State to calculate allocation
• If far from compliance, consider the following items’ impacts on the allocation and potentially seek State pre-approval:
• Measuring new development irrigated areas since State LAM was developed.
Requires supporting MWELO report documentation
• Consider alternative net ETo data
• Future: Determine best source(s)/method(s) to use.
OPTIONS
• Evaluate Residential Special Landscape Areas (SLAs) and provide data to State:
recycled water irrigation or irrigation of solely edible plants • Evaluate MFR & HOAs to designate as CII SLAs: see Outdoor CII Actions slide • Evaluate and include new development
3-5 448
OPTION: Spatially allocate billing data and link
to parcels*
PRELIMINARY ACTION PLANOUTDOOR RESIDENTIAL ACTIONS
DESCRIPTION
Use WaterView or GIS to assess refined customer
categorization to optimize residential and CII
outdoor UWUO allocations & CII PMs
TIMELINE PRIORITY
12/2024 Medium
RESOURCES ROLE
RWS Customer
Service
Complete classifying
accounts by use
type/spatial allocation
Other
Consider how to address
ADUs/upgraded
services vs separate
service at same
property
addresses/APNs.
Consider coordinating
with the Planning Dept
and MWELO
requirements.
STATUS
In Progress
PURPOSE
Optimize UWUO, CII performance measures, and conservation through refined customer categorization
CONSIDERATIONS
• Partially completed with WaterView
• ID land use code “crosswalk” to billing categories to investigate and refine residential or CII customer categorization, or Special Landscape Areas (SLAs) (e.g., HOA landscape/common area meters, mixed use, recreation/public benefit, etc.) • Assess best categorization for optimal UWUO standards application • Supports CII Outdoor UWUO and CII Performance Measures (see slides later in presentation)
• Sets up potential to efficiently categorize new development or ADUs, and application to the UWUO→ Use MWELO annual reports
OPTIONS
• Evaluate and adjust State landscape area data or use supplier data. • Target review of users over their allocation estimate and investigate commonalities to inform conservation program development.
3-6*Also applies to CII Outdoor
449
OPTION: Assess variances
PRELIMINARY ACTION PLANOUTDOOR RESIDENTIAL ACTIONS
DESCRIPTION
Do not pursue variances now, but reconsider in the
future if needed to meet the UWUO.
TIMELINE PRIORITY
2024/25 Low
STATUS
TBD – Unlikely to Apply
PURPOSE
Optimize UWUO, CII Performance Measures (PM), and conservation through refined customer categorization
CONSIDERATIONS
• Variances may be granted if the impact on the UWUO is 5% or larger • Potential Variances:
• Populations of horses and other livestock
• Water for dust control on horse corrals or other animal exercise arenas • Water for irrigating agricultural landscapes that are within residential areas but have not been classified as irrigable irrigated by DWR
• Water used to respond to emergency events, not including drought • Water for landscapes irrigated with recycled water containing high levels of TDS • Water to supplement ponds and lakes to sustain wildlife as required by existing regulations or local ordinances.
3-7 450
4. CII UWUO Standards
OUTDOOR- Dedicated Irrigation Meters (DIM)
Commercial,
Industrial, Institutional
Landscape Standard
Indoor Residential
Standard
Outdoor Residential
Standard
Water Loss
Standard
Adjustments
(if applicable)
+ + + +
451
Outdoor CII DIM Standard
4-1
Until July 2028
Actual Use in EAR
7/2028– 7/2030 0.80
7/2030– 7/2035 0.63
Post-2019
Customers
Pre-2019 Customers
0.45 Data from DWR or
supplier
Post-2019
Customers
Pre-2019
Customers
• Future DWR data
availability
timeframe
unknown
• Supplier estimate
optionalAfter 7/2035 0.45
× =
CII Landscapes
Standard
(LEF)
Net ETo
Inches per year
Reference ET– Effective
precipitation
CII Landscape Area
with DIMs
Sq. feet of Irrigable
Irrigated Area
Unit
Conversion
Factor
CII Landscapes
Budget
(Gallons Per Year)
× 0.62
×
Excluded from UWUO:
CII Indoor,
Other Uses, & CII
Performance Measures
(PM), but
Coordinate/Update
UWUO based on CII
PMs described later
SLA
Customers
1.0 452
Calculate Outdoor Allocation
PRELIMINARY ACTION PLANOUTDOOR CII ACTIONS
DESCRIPTION
Multiply the LEF, net ETo and Landscape Area.
Consider SLAs and new development.
TIMELINE PRIORITY
12/2024 High
RESOURCES ROLE
RWS Customer
Service
Assist in identifying SLAs.
Review cemetery and
parks accounts and
classify as CII for larger
allocation.
Utilities
Compile ETo data (either
from the State or other
source)
Confirm appropriate
irrigated and potentially
irrigated areas, based
on State data
Identify SLAs
Develop outdoor
budgets
Eagle Aerial
Pending irrigated area
review, update budgets
in WaterView
PURPOSE
Required for standard calculation.
CONSIDERATIONS
• Before July 2028: Report CII DIM use as shown in EAR
• After 2028: Use data provided by State or supplier data/estimate with approval from State. Incorporate newly classified DIMs per CII PM slides.
OPTIONS
• Evaluate SLAs
• Recreation areas, permanent/dedicated areas for edible plants such as orchards and vegetable gardens, and areas irrigated with recycled water • slopes with vegetation for stability
• ponds/lakes sustaining wildlife, recreation/public benefit (excludes those claimed as variances shown in next slide)
• Plant collections, botanical gardens, and arboretums
• Public swimming pools and similar recreational water features • Cemeteries built before 2015
• Evaluate and include new development
• See previous slide: “OPTION: Spatially allocate billing data and link to parcels” and “Assess and implement appropriate compliance strategy, programs & policies” slide later in presentation
4-2 453
OPTION: Assess Variances
PRELIMINARY ACTION PLANOUTDOOR CII ACTIONS
DESCRIPTION
Consider impacts of potential variances and need
for potential further assessment
TIMELINE PRIORITY
2025 Low
STATUS
TBD – Unlikely to Apply
PURPOSE
Assess potential variances and consider applicability and impact to the UWUO >5%
CONSIDERATIONS
• Potential Variances:
• Water used to respond to emergency events, not including drought • Water for landscapes irrigated with recycled water containing high levels of TDS • Water to supplement ponds and lakes to sustain wildlife as required by existing regulations or local ordinances (1.1 LEF vs 1.0 LEF for SLA). 4-3 454
5. Water Loss UWUO Standards
Summarize Separately Regulated and Reported Component
Indoor Residential
Standard
Outdoor Residential
Standard
Commercial,
Industrial, Institutional
Landscape Standard
Water Loss
Standard
Adjustments
(if applicable)
+ + + +
455
Water Loss Standard
5-1
2017-19: 166 AFY
2028: 213 AFY
Reduction
Required: 0 AFY
18 by 2028
× =
System-Specific Standard
Gallons per connection per day
(or gallons per mile per day)
Connections
Number of connections
served by supplier
365
Number of days
in the year
Water Loss Budget
(Gallons Per Year)
×
By July 2021
Adoption
of proposed
legislation
Jan 1, 2023
Respond to
questionnaire:
Data quality
Optional:
Suppliers with
low losses
request off-ramp
July 1, 2023
Optional:
Request
adjustments
to standards
using new
data
July 1, 2027
Update
questionnaire
responses:
Pressure
and asset
management
Jan 1, 2028
State Water Board
begins assessing
compliance for
volumetric
standards
Jan 1, 2024
Water use
objective
calculated
including
allowed
water loss
July 1, 2024
Respond to
questionnaires:
Pressure
and asset
management
Ongoing
compliance on a
3-year basis
456
Consider alignment strategy for future reporting
PRELIMINARY ACTION PLANWATER LOSS ACTIONS
DESCRIPTION
Plan for future reporting alignment
TIMELINE PRIORITY
Annual Low
RESOURCES ROLE
RWS Customer
Service
Continue to support
Operations reporting
needs
RWS/Veolia
Operations
Continue to complete the
Water Loss Reporting
and Validations.
Provide copies to the
Utilities Department.
Maintain existing Water
Loss level. *Note that
current efforts meet the
Water Loss Standard.
Utilities
Obtain Water Loss
values for inclusion in
UWUO reporting and
calculation.
STATUS
TBD
PURPOSE
Assess Water Loss Audits data that should align with other reports, correct if necessary, and plan for data alignment in multiple reports.
CONSIDERATIONS
• Water Loss reporting has its own compliance regulations (SB 555) but impacts the UWUO. Align preparation of water loss reporting data with impacts to the UWUO and other reports, such as the EAR.
• Assess cost/benefit of investing in real water loss reduction programs for SB 555 compliance purposes vs UWUO compliance. Apparent water loss isn't included in UWUO. • Note that suppliers cannot be deemed out of compliance with their UWUO solely for not meeting their Water Loss standard.
• Prepare for upcoming questionnaires due in July 2024 and July 2027, and 2028 compliance.
5-2 457
6. UWUO Adjustments
Other Adjustments
Indoor Residential
Standard
Outdoor Residential
Standard
Commercial,
Industrial, Institutional
Landscape Standard
Water Loss
Standard
Adjustments
(if applicable)
+ + + +
458
Bonus
Incentive
As a percentage
of the objective
not to exceed
10% or 15%*
Potable Reuse Bonus Incentive
6-1
×=
Potable water
delivered to
residential accounts
+ Potable water
delivered to CII
landscapes w/DIMs
Loss Factor
Total Basin Production
×
All potable water
deliveries
Supplier individual potable reuse
Recharge
×
Supplier
Basin
Production
*Bonus for potable reuse delivered to residential and CII-DIM customers • Up to 10% of UWUO: Facilities operational AFTER 2022
• Up to 15% of UWUO: Facilities operational BEFORE 2022 *Not Applicable for the City of Rialto. Informational Only. 459
6-2
Suppliers can propose alternate data and methods and supporting information for approval from the State 3 months prior to AWUR due date for the following categories:
• Alternative supporting data (landscape area, SLAs, new construction, ETo, etc.) and methods (population different from EAR)
• Variances described in previous slides
• Temporary Provisions
• Indoor Residential: negative impacts to wastewater systems • Outdoor Residential: water for pools, spas, water features; new climate-ready trees; establishment of qualifying landscapes (low-impact, ecological restoration) • Outdoor CII DIM: new climate-ready trees; establishment of qualifying landscapes (low-impact, ecological restoration)
• Recommendation: Do not pursue now, but assess potential benefits if unable to meet the UWUO through other efforts
Other Adjustments
460
7. CII Performance Measures
Compliance Details and
Preliminary Action Planning
Not included in UWUO, but should be coordinated with UWUO calculations 461
CII Performance Measures
7-1
Classify CII (18 Categories) & 4 Categories (Laundries, Large Landscapes, Water Recreation, Car Wash)
Identify CII Top 2.5% & 20% for BMP
Development & Implement BMPs
Ban CII Non-Functional
Turf Irrigation
ID Disclosable Buildings
& Report Use
Top 2.5% of all CII Users
2 BMPs from each
category below
Top 20% of each
of 18 categories
1 BMP from each
category below
1. Outreach, Technical Assistance, and Education: Bill
inserts, education, webpage, social marketing, etc.
2. Incentive: Rebates, certification programs
3. Landscape: System inspections, workshops, training, turf removal, etc.
4. Collaboration and coordination: Coordinate with “green building” certification, or land use or NGO entities
5. Operational: Infrastructure changes (smart meters), billing programs, etc.
2025: ID or Design
& Implement
2026–2030: 20%
progress each year
until 100% in 2030
ID CII MUM for DIM Conversion
(>500,000 gal)
Measure DIM Irrigated Areas
MUM > DIM/in-lieu
Conversion Implementation
Coordinate/Update
UWUO
UWUO compliance
may inform BMPs
implementation
462
Classify all CII customers with 18 categories from
USEPA Energy Star Portfolio Manager (EPSM)
PRELIMINARY ACTION PLANCII PM ACTIONSPURPOSE
Customers must be classified into USEPA EPSM categories and four general categories. This will aid in BMP development.
CONSIDERATIONS
• Use spatially allocated billing, land use, and parcel data as previously described, business permitting/licensing offices coordination, sewer rate categories, or CA Secretary of State business forms to categorize customers as follows:
1. Banking/financial services
2. Education
3. Entertainment/public assembly
4. Food sales and service
5. Healthcare
6. Lodging/residential
7. Manufacturing/industrial
8. Mixed use
9. Office
10. Parking
11. Public services
12. Religious worship
13. Retail
14. Technology/science
15. Services
16. Utility
17. Warehouse/storage
18. Other
In addition, identify:
- CII Laundries
- Large Landscapes
- Water Recreation
- Car Wash
DESCRIPTION
Classify CII into18 USEPA ESPM Categories & 4
general categories
TIMELINE PRIORITY
Classify 20% of
accounts/ year over
5 years starting
2026
Medium
RESOURCES ROLE
RWS Customer
Service
Categorize customer
accounts into these
categories.
Utilities
Utilities to provide
Customer Service a
business license category
list to inform
classification of accounts
by use type.
Other
Consider land use
information to populate
customer use type.
7-2 463
Identify CII landscapes using >500,000
gallons/year with mixed-use meters (MUMs)
PRELIMINARY ACTION PLANCII PM ACTIONS
DESCRIPTION
Evaluate CII large landscape irrigation estimates
and assess compliance options
TIMELINE PRIORITY
Start with supplier CII
LAM data or DWR
data once available,
then 20% of accounts
/ year starting 2026
Medium
RESOURCES ROLE
RWS Customer
Service
Identify top 20% of
users in each category
(see previous page).
Identify top 2.5% of all
CII accounts.
RWS/Veolia
Operations
Implement DIMs or other
equivalent/in-lieu tech
Utilities
Identify and implement
in-lieu tech where DIMs
are not used
PURPOSE
Convert to Dedicated Irrigation Meter (DIM) or equivalent/in-lieu technology in coordination with CII UWUO.
CONSIDERATIONS
• If CII LAM data is available, report in the
2024 AWUR as included in the EAR. Provide
supporting documentation to State.
• Measure DIM and MUM landscape areas &
estimate irrigation allocations using supplier
LAM data or DWR data when available
• Assess cost/benefit of developing budget-
based structures/rates vs implementing DIM
or other equivalent/in-lieu tech. Use in-house
analysis, other available studies/reports, or
hire consultant to develop a detailed study
• Implement DIMs or other equivalent/in-lieu
tech with State approval making 20%
progress by 2026 and 20% each year until
100% in 2030
• Equivalent/in-lieu technologies- Must use two
if no DIM:
• Water budget-based rate structures
• Water budget-based management program
without a rate structure
• Hardware improvements to identify outdoor
water use, smart irrigation controllers and
pressure-regulated sprinkler spray heads
• Remote sensing
• Landscape plant palette transformation
programs
• Others (as approved by SWRCB)
• Water management practices for large
landscapes that do not have DIMs:
• Communications
• Irrigation systems maintenance
• Irrigation scheduling 7-3 464
Assess appropriate BMPs and costs based on CII
PM criteria
PRELIMINARY ACTION PLANCII PM ACTIONS
DESCRIPTION
BMP evaluation and implementation
TIMELINE PRIORITY
ID BMPs by 2025,
then implement for
20% of accounts/
year starting 2026
Medium
RESOURCES ROLE
RWS Customer
Service
Provide supporting
customer use data, as
needed.
Utilities Identify and implement
BMPs.
PURPOSE
ID and implement BMPs to achieve CII UWUO and meet CII PM requirements.
CONSIDERATIONS
• Use preliminary estimates and in-house determination of appropriate BMPs, other studies/reports available (CalWEP), or hire consultant to develop a detailed study. • Consider what is most effective for service area.
• Consider the costs/benefits associated with BMP implementation. • Incorporate into budget/staffing plans.
• State estimates 25% of a full-time employee’s hours for program startup and 5% of the employee’s hours for continued annual program administration • Design BMPs by 2025 and make 20% implementation progress annually starting in 2026 7-4 465
ID disclosable buildings and usage, then notify
customer
PRELIMINARY ACTION PLANCII PM ACTIONS
DESCRIPTION
Classify disclosable buildings and provide usage
to customers
TIMELINE PRIORITY
ID all disclosable
buildings by 2025,
then provide usage
for 20% of accounts/
year starting 2026
Medium
RESOURCES ROLE
RWS Customer
Service
Identify buildings
>50,000 sq ft and
provide customer use to
the owner.
Utilities
Consider using
WaterView to ID
disclosable buildings.
PURPOSE
Comply with regulations. Identify buildings >50,000 sq ft, then aggregate and disclose annual use to the building owner or Owner’s Agent.
CONSIDERATIONS
• Use spatially allocated billing, land use, and parcel data as previously described to identify appropriate customers/buildings by 2025
• Provide usage data to building owners in ENERGY STAR program or template at 20% of customers per year starting in 2026
7-5 466
Ban Non-Functional Turf (NFT) Irrigation with
Potable Water
PRELIMINARY ACTION PLANCII PM ACTIONS
DESCRIPTION
Identify CII NFT irrigated with potable water and
develop an ordinance or policy to ban it.
TIMELINE PRIORITY
By 2025, or as
proposed in AB 1572
from 2027-2031
Medium
RESOURCES ROLE
Utilities
Review data provided
by the State that
identifies NFT.
Make recommendation
to City Council to ban
non-functional turf
throughout the City.
PURPOSE
Identify CII NFT and develop plan to comply with regulations.
CONSIDERATIONS
• Use data when provided by State , land use and parcel data as previously described, and/or additional information, to identify NFT areas that are decorative and have no other functions, such as recreation
• Includes turf located on road medians and outside businesses that are not used for recreation • Includes homeowners’ associations and other similar entities but does not include the residences of these entities’ members
• Exceptions:
• Functional grass, such as sports fields, picnic areas, cemeteries, and the areas irrigated with recycled water • Turf necessary for health of trees and other perennial non-turf plantings or that is necessary to address an immediate health and safety need
• Turf with a plant factor of 0.3 or less, and actual use is less than 40% of reference ETo • Proposed regulations indicate a ban occurring by January 1, 2025. However, AB 1572 (awaiting Governor’s signature) indicates the ban takes effect as follows:
• 2027 - Properties owned by local governments
• 2028 - Commercial and industrial properties
• 2029 - Common areas of homeowners’ associations
• 2031 - Properties owned by local governments in disadvantaged communities or when state funding for turf replacement is available
• Violations are subject to civil liability and penalties set forth in Section 1846, or to civil liability and penalties imposed by an urban retail water supplier pursuant to a locally adopted ordinance or policy 7-6 467
8. Annual Water Use Report
468
Develop Annual Water Use Report (AWUR)
PRELIMINARY ACTION PLANAWUR ActionsPURPOSE
Develop and submit an AWUR to comply with regulations.
CONSIDERATIONS
• The AWUR includes:
• UWUO calculation and relevant supporting data
• Actual urban water use and relevant supporting data
• Documentation of CII PM implementations
• Description of progress towards meeting UWUO
• Other data required includes:
• CII and other deliveries to MUMs, apparent water losses, # of connections, supporting data and estimated water savings for CII UWUO components and CII PMs if progress has been made
• Use State spreadsheet template for the 2024 report, which will be submitted as an attachment, not entered into a State database. AWURs submitted after regulations are adopted and effective may be uploaded in a different template and database.
DESCRIPTION
Collect data, perform calculations, and report
data in State template
TIMELINE PRIORITY
January 1st each
year High
RESOURCES ROLE
RWS Customer
Service
Provide customer use
data.
RWS/Veolia
Operations
Provide water supply
data, electronic annual
reports, water loss, etc.
Utilities
Compile data and
complete the AWUR.
Leverage WaterView,
when available.
8-1 469
Annual Water Use Report Template
8-2
470
AWUR Data Sources
Actual Water Use Source
Actual Residential Water Use EAR
Actual Outdoor Irrigation of Landscape Areas with DIM in Connection with CII Water Use EAR/Supplier Discretion/Estimate
Actual System Water Loss Water Loss Audit
Actual Residential Water Use EAR
Actual Outdoor Irrigation of Landscape Areas with DIM in Connection with CII Water Use EAR/Supplier Discretion/Estimate
8-3
Annual Efficient Indoor Residential Water Use Source
Service Area Residential Population EAR/Supplier Estimate Indoor Residential Water Use Standard (gallons/year) State Regs Estimated Annual Efficient Indoor Residential Water Use (gallons/year) Supplier Calculation Urban Water Use Objective
471
AWUR Data Sources
8-4
Annual Efficient Outdoor Residential Water Use Source
Existing Residential Landscape Area (square-ft) DWR LAM or Supplier Data Irrigable Not Irrigated Landscape Area (square-ft) DWR LAM or Supplier Data New Residential Landscape Area (square-ft) Supplier/MWELO Annual Report(s) Residential Special Landscape Area (square-ft) Supplier Estimate Based on State or Supplier Data Reference Evapotranspiration (ETo) (inches per year) DWR/CIMIS or Supplier Data Effective Precipitation (Peff) (inches per year) DWR/CIMIS or Supplier Data Total Estimated Annual Efficient Outdoor Residential Water Use (gallons/year) Supplier Calculation
Temporary Provisions Supplier Estimate Using State and/or Supplier Data Annual Efficient Outdoor Irrigation of Landscape Areas with CII-DIM or Equivalent Technology Supplier Estimate Using State and/or Supplier Data Annual Efficient Water Loss Supplier Calculation Using Water Loss Audit Annual Efficient Variance Water Use (For Informational Purposes) Supplier Estimate Using Supplier/Other Data Urban Water Use Objective
Bonus Incentive Source
Bonus Incentive Supplier Estimate Using Supplier, State or Other Data, GeoTracker, Annual Volumetric Reporting 472
9. Preliminary Roadmap to
UWUO Compliance
473
474
Components & Actions to Meet Regulations
LEF= Landscape Efficiency Factor
II= Irrigable Irrigated
INI= Irrigable Not Irrigated
SLA= Special Landscape Area
MUM= Mixed-use Meter
DIM= Dedicated Irrigation Meter
9-2475
10. Additional References
476
Resources
• CII Water Use Classification
(Santa Barbara & Placer County
Water Agency) and Commercial
Pilot Program (West Basin MWD)
• https://calwep.org/wp-
content/uploads/2023/02/CII-
Standard_P2P_2023-5-
22_Maddaus-Water-pdf.pdf
• SAWPA- WUE Budget Assistance
Project via a consultant
• https://calwep.org/wp-
content/uploads/2022/03/CalWEP_C
II-Overview_Spring-
Plenary_2022_COMBINED.pdf
• Metropolitan Water District of
Orange County
• https://www.mwdoc.com/9-things-to-know-
about-evolving-water-use-efficiency-
standards/
• Consultant support to measure DIMs
irrigated area
• Participation in State’s regulatory
meetings and comment letters
submitted
• Consultant (WSC/M Cubed) tool
estimated preliminary UWUOs for
retail customer agencies,
cost/benefit, and rates/DAC impacts
• Flume pilot
• Water loss technical assistance
program
• Incentive and educational programs
477
Resources
Regulation Updates, Summaries & Data
• SWRCB
• https://www.waterboards.ca.gov/water_issu
es/programs/conservation_portal/regs/wate
r_efficiency_legislation.html
• CalWEP
• https://calwep.org/framework-updates/
• https://calwep.org/update-dwr-sends-final-
framework-recommendations-to-swrcb/
• (see cut sheets) https://calwep.org/all-
resources/
• https://calwep.org/commercial-industrial-
institutional/
• https://calwep.org/event/peer-to-peer-2023/
• CII classification guidance document
coming soon
• Locate or request LAM data from DWR
at [email protected]
Preliminary UWUO Calculation Tools
• State Water Board Water Use Objective Exploration
Tool
• https://www.waterboards.ca.gov/water_issues/programs/ conservation_portal/regs/objective-exploration.html
• Alliance for Water Efficiency Water Conservation
Tracking Tool
• https://www.allianceforwaterefficiency.org/resources/topic/w ater-conservation-tracking-
tool#:~:text=The%20AWE%20Water%20Conservation%20T
racking,for%20projecting%20future%20water%20demands.
• WaterView by Eagle Aerial-
• https://www.eagleaerial.com/
• CA Data Collaborative (CaDC) Analytics
• https://www.thecadc.org/product
• DCSE Water Saving Targets (WST) Application
• Masoud Hoseyni, Ph.D Phone: 949-465-3407 Email:
[email protected]
478
Related Reporting Timeline
Excluded:
- CII Indoor Use- CII Outdoor without DIMs- Apparent Water Losses- Other Uses 479
Draft Model 6 -Stage WSCP Response Actions
2022 Drought Contingency Plan PUBLIC DRAFT
City of Rialto | H
Appendix H Draft Model 6-Stage
WSCP Response Actions
H
480
481
2022 Drought Contingency Plan
City of Rialto
Draft Water Shorage Contingency Plan Response Actions
Topic Stage 1
10%
Stage 2
20%
Stage 3
30%
Stage 4
40%
Stage 5
50%
Stage 6
>50%
Irrigation - New Homes
and Buildings
The irrigation with potable
water of landscape outside of
newly constructed homes and
buildings must be consistent with
regulations or other requirements
established by the California
Buildings Standards Commission,
as those regulations may be
modified from time to time.
New Irrigation Services New irrigation water service
shall not be installed.
Watering Restrictions -
Specific Days
All landscape irrigation shall be
limited to no more than four (4)
days per week for no more than
ten (10) minutes per station per
day. This provision does not
apply to any landscape that has
water-efficient devices that are
operated properly. Water-
efficient devices are drip
irrigation systems and
operational weather-based
irrigation controllers. The term
"week" is defined as Sunday
through Saturday.
All landscape irrigation with
potable water shall be limited to
no more than three days per
week for no more than ten
minutes per station per day. This
provision does not apply to any
landscape that has water-
efficient devices that are
operated properly. Water-
efficient devices are drip
irrigation systems and
operational weather-based
irrigation controllers. Week is
defined as Sunday through
Saturday.
All landscape irrigation with
potable water shall be limited to
no more than two days per week
for no more than ten minutes per
station per day.
All landscape irrigation with
potable water shall be limited to
no more than one day per week
for no more than ten minutes per
station per day.
All outdoor watering of any kind
is prohibited, except to maintain
trees.
Note: Actions proposed for future Water Shortage Contingency Plan update. Page 1 of 4 482 2022 Drought Contingency Plan
City of Rialto
Draft Water Shorage Contingency Plan Response Actions
Topic Stage 1
10%
Stage 2
20%
Stage 3
30%
Stage 4
40%
Stage 5
50%
Stage 6
>50%
Watering Restrictions -
Specific Times
Watering with automatic
sprinklers should be done
between eight p.m. and six a.m.
Hand watering and non-
automatic sprinklers should be
completed within two hours
before or after dawn, or two
hours before or after dusk, as
conditions are safe. Drip
irrigation is exempt from this
recommendation. Water being
used during repair or
maintenance of watering systems
is exempt from this section.
Irrigation During High
Winds
The use of sprinklers for any
type of irrigation during high
winds, which divert a significant
amount of water away from the
intended landscaping, is
prohibited.
There shall be no watering of
any lawn or landscaped area,
except by use of reclaimed
water.
Irrigation - Medians
The irrigation of potable water
of ornamental turf on public
street medians is prohibited. The
term "median" shall mean the
strip of land between street
lanes.
Irrigation After
Measureable Rainfall
Customers encouraged not to
irrigate turf or ornamental
landscapes during or within forty-
eight (48) hours following
measurable precipitation in
excess of one-quarter inch.
Irrigating turf or ornamental
landscapes during or within forty-
eight (48) hours following
measurable precipitation in
excess of one-quarter inch is
prohibited.
CII - Restaurants
All restaurants and food
establishments are requested
not
to serve water to their customers
unless specifically requested by
the customer.
All restaurants are prohibited
from serving water to their
customers except when
specifically requested by the
customer.
Note: Actions proposed for future Water Shortage Contingency Plan update. Page 2 of 4 483 2022 Drought Contingency Plan
City of Rialto
Draft Water Shorage Contingency Plan Response Actions
Topic Stage 1
10%
Stage 2
20%
Stage 3
30%
Stage 4
40%
Stage 5
50%
Stage 6
>50%
CII - Construction
Water used for compaction, dust
control, and other types of
construction shall be by permit
only and will be limited to
conditions of the permit or may
be prohibited as determined by
the city administrator, or his/her
designee.
No potable water shall be used
for construction purposes. All
construction meters shall be
locked off or removed.
Construction meters may be
reinstated upon the direction of
the City Manager or his/her
designee.
CII - Laundered Linens
Operators of hotels and motels
must provide guests with the
option of choosing not to have
towels and linens laundered
daily. The hotels and motels
shall prominently display notice
of this option in each guestroom
using clear and easily
understood language.
Vehicle Washing
Washing of automobiles, trucks,
trailers, boats, airplanes, and
other types of mobile equipment
is prohibited unless done with:
-a bucket or hand-held hose
equipped with a shut-off nozzle
- a device attached to the hose
that causes it to cease dispensing
water immediately when not in
use
-commercial car wash with
recirculating water
Note: Actions proposed for future Water Shortage Contingency Plan update. Page 3 of 4 484 2022 Drought Contingency Plan
City of Rialto
Draft Water Shorage Contingency Plan Response Actions
Topic Stage 1
10%
Stage 2
20%
Stage 3
30%
Stage 4
40%
Stage 5
50%
Stage 6
>50%
Wash Down
There shall be no application of
water to sidewalks, walkways,
driveways, parking areas,
patios, porches, verandas, tennis
courts or other paved, concrete
or other hard surface areas,
except that flammable or other
similarly dangerous or unhealthy
substances may be washed from
said areas by direct hose
flushing for the benefit of public
health or safety.
Run-Off
Use of water for 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 is
prohibited.
Water Features -
Decorative Fountains
No water shall be used to clean,
fill, operate or maintain levels in
decorative fountains unless such
water is part of a recirculating
system.
Water Features -
Swimming Pools
Swimming pools, ornamental
ponds, fountains, water displays,
hot tubs, spas and artificial lakes
shall not be filled or refilled
after being drained.
Temporary, above-ground
swimming pools shall be
prohibited.
Leaks
No person shall knowingly
permit water to leak from any
facility, improvement or
plumbing fixture on his/her/its
premises; any such leak shall be
repaired in a timely manner.
All customers shall repair all
leaks within seventy-two (72)
hours of notification by the city,
actual notice by the customer, or
other notice of such leak, unless
other arrangements are made
with the city administrator or
his/her designee.
Note: Actions proposed for future Water Shortage Contingency Plan update. Page 4 of 4 485 City of Rialto
Legislation Text
File #: WS-24-1258, Version: 1, Agenda #:
FOR: Water Subcommittee Meeting [March 27, 2024]
TO: Honorable Water Subcommittee Members
APPROVAL: Stephen Dopudja, P.E., Interim Utilities Manager Toyasha Sebbag, Assistant to the City Manager
Water and Wastewater Rate Study.
RECOMMENDATION
Request that the Water Subcommittee provide feedback on Water and Wastewater Rate Model. (ACTION)
BACKGROUND
The agenda includes a discussion and presentation during the meeting by F.G. Solutions, the City's Water and Wastewater Consultant, regarding the ongoing development of the updated rate model.
ANALYSIS/DISCUSSION
At the February 27, 2024, City Council Meeting staff requested that the item pertaining to a public hearing under Proposition 218 to adjust water and wastewater rates be tabled until a future date to be determined. It was further explained that City staff would bring back for City Council consideration to set a new public hearing with new and proper 218 notification materials.
Subsequently, staff requested a 2023 Water and Wastewater Rate Study Amendment 1 ( ATTACHMENT 1) to a professional services agreement with FG Solutions, LLC with a timeline to update rate calculations with rates effective January 1, 2025, 2026, 2027, 2028, and 2029. Below is the proposed milestone schedule:
Proposed Milestones Date
Notice to Proceed 03/08/2024
Draft Rate Proposal to City Staff 03/26/2024
Water Subcommittee Meeting 03/27/2024
Attend Various Meetings TBD
Final Rate Proposal Developed 04/09/2024
Council Sets Proposition 218 Hearing 04/23/2024
Preliminary Draft Report Delivered 05/16/2024
Final Draft Report Delivered 05/31/2024
Proposition 218 Public Hearing 06/25/2024
1st Rate Adjustment 01/01/2025
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File #: WS-24-1258, Version: 1, Agenda #:
Any requirement to produce more than one iteration of a rate proposal will result in delay of all scheduled milestones.
FINANCIAL IMPACT
Operating Budget
Funds are available in water and wastewater contract services operating accounts, with funds split based on the number of accounts served.
The 2023 Water and Wastewater Rate Study Amendment 1 costs will be split as follows:
Water with approximately 12,500 (37%) accounts $24,291
Wastewater with approximately 21,470 (63%) accounts $41,360 Amendment 1 Costs $65,651
The Original Professional Services Agreement (PSA) awarded on April 11, 2023, was for $138,297.
The PSA Amendment 1 is for $65,651, bringing the total contract cost to $203,948. Amendment 1 is within the signature authority of Arron Brown, Assistant City Manager because it is for under $100,000 and did not need to return to the City Council for authorization.
Capital Improvement Budget
The proposed action will not impact the Capital Improvement Budget.
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Proposed Amendment 1 to Professional Services Agreement Page 1 of 5 March 7, 2023
City of Rialto
2023 Water and Wastewater Rate Study
Proposed Amendment 1 to Professional Services Agreement
Introduction
On April 11, 2023, the City of Rialto (“City”) and FG Solutions, LLC (“FG Solutions”) executed a Professional Services Agreement to complete the City’s 2023 Water and Wastewater Rate Study (“Rate Study”).
On March 4, 2024, the City requested a proposal from FG Solutions to update the Rate Study due to the rescheduling of the City’s Proposition 218 Public Hearing.
The City has set the following schedule milestones for the requested FG Solutions work:
1. Final rate proposal by April 9, 2024.
2. City Council consideration of setting a Proposition 218 Public Hearing date at the April 23, 2024 City Council meeting.
3. Proposition 218 Public Hearing on June 25, 2024.
FG Solutions has prepared a work plan, described in the Schedule section of this Amendment, that is consistent with the City’s schedule. To meet the City’s schedule, the following must occur:
1. FG Solutions will provide only one iteration of the draft rate proposal.
2. Except for providing a final rate proposal on April 9, 2023 in advance of the April 23, 2024 Council meeting, FG Solutions will not provide w ork product in advance of meetings with City management or elected officials.
3. FG Solutions will begin updating the draft Rate Study Report after April 23, 2024.
The scheduled milestones described above cannot be met if:
1. More than one draft rate proposal is required.
2. There are any changes to data inputs after March 14, 2024. Final Capital Improvement costs and schedule must be delivered to FG Solutions by March 14, 2024, COB.
3. Any meetings with City management or elected officials do not take place prior to April 4, 2024.
Revised Scope of Work
Task 9
The original Scope of Work for the Rate Study included a series of Presentations and Meetings. During the course of the Rate Study, City staff identified necessary additional services that weren’t contemplated in the April 11, 2023 Professional Services Agreement. Per City staff request, FG Solutions completed this work in 2023 and February 2024. This Amendment 1 includes these Additional Services, requested by staff and provided by FG Solutions. The following is added to the Task 9 Scope of Work, related to the additional services completed in 2023:
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Proposed Amendment 1 to Professional Services Agreement Page 2 of 5 March 7, 2023
1. Per request by City staff, FG Solutions performed services September 1, 2023 through December 31, 2023 as an expert reference associated with: (a) the City’s capital project financing strategy development, and (b) preparations for the 2024 Labor Reset.
2. Related to the City’s capital project financing strategy development, services included multiple remote and in -person meetings with City, the City’s legal counsel , the City’s Financial Advisor, and Rialto Water Services.
3. Related to the 2024 Labor Reset, services included prepared for and attendance at 12/12/23 meeting with City staff in City offices to prepare for the 2024 Labor Reset. FG Solutions documented the results of this meeting and delivered documentation to City staff.
Task 11 – 2024 Rate Study Update
Task 11.1: Update Rate Calculations
1. Consultant will update the Revenue Requirement analysis, leaving all projected revenues and expenses unchanged, with the following exceptions:
a. Incorporating updated projected chemical costs received from RWS in December 2023, subject to the City’s direction regarding the extent that the City is responsible for payment of the increased chemical costs.
b. Delaying the capital improvement schedule by one year c. Incorporating funds received from the Federal government by the City related to COVID -era suspension of late payment/shutoff policies.
2. Consultant will update the Cost-of-Service Analysis and Rate Design calculations, with no changes to the water and wastewater customer classes or water tier structure. a. Update the Cost-of-Service Analysis test year to be FY 24/25 instead of FY 23/24. b. Updating rate design calculations to reflect changes in the Revenue Requirement analysis and cost-of-service analysis.
3. Consultant preparation of work plan and schedule, and participation in virtual meetings with City staff on March 4 and March 5, 2024.
The following items are not included in this Amendment:
1. Incorporating the City’s FY 24/25 budget as a basis for rate projections.
2. Incorporating the results of the forthcoming Labor Reset procedure.
3. Incorporating updated metered water consumption from CY 2023 as a basis for rate projections.
Task 11.2: Meetings
This task includes attending meetings requested by City staff and a budget allowance for revision of draft work products following meetings.
1. One Consultant staff will attend the following meetings in-person:
a. Up to three Water Subcommittee meetings
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Proposed Amendment 1 to Professional Services Agreement Page 3 of 5 March 7, 2023
b. Up to two Council Study Sessions
c. Up to one Utilities Commission Meeting
d. One City Council meeting to set Proposition 218 Public Hearing date e. One City Council meeting which will contain the Proposition 218 Public Hearing
2. One Consultant staff will attend the two City Council meetings remotely.
3. Consultant will prepare presentations for Water Subcommittee meetings. Presentations will be similar in format to those presented to the Water Subcommittee in 2023. City is responsible for preparing all other presentations for the meetings listed in 11.2.1.b through 11.2.1.e.
4. Proposition 218 support limited to reviewing work product prepared by City staff.
5. City staff are responsible for updating water and wastewater monthly bill comparisons.
A budget allowance is made for revisions to work products based on the outcome of the meetings listed in 11.2.1.
Task 11.3: Rate Study Report
FG Solutions will revise the 2023 Rate Study Report to incorporate changes from Tasks 11.1 and 11.2. This includes preparation of updated draft, final draft, and final reports.
Reports will be delivered in electronic form only. No hard copies will be delivered.
Schedule
A proposed schedule is shown in Table 1 below , which identifies key milestones required to meet the City’s schedule milestones, including the June 25, 2024 Proposition 218 Public Hearing.
Table 1. Milestone Schedule
Note 1: All other meetings identified in Task 11.2 will be scheduled based on the availability of the participants. City acknowledges that requiring other meetings will likely result in delay of all subsequent milestones.
Milestone Date
Notice to Proceed 3/8/2024
Draft Rate Proposal to City Staff 3/26/2024
Water Subcommittee Meeting 3/27/2024
All Other Task 11.2 Meetings See Note 1
Final Rate Proposal Developed 4/9/2024
Council Sets Prop 218 Hearing 4/23/2024
Draft Report Delivered 5/16/2024
Final Draft Report Delivered 5/31/2024
Prop 218 Public Hearing 6/25/2024
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Proposed Amendment 1 to Professional Services Agreement Page 4 of 5 March 7, 2023
Any requirement to produce more than one iteration of a draft rate proposal will result in delay of all schedule milestones after April 1, 2024. FG Solutions’s ability to meet the schedule milestone requires the City to provide final Capital Improvement Plan schedule and cost revisions by March 15, 2024.
Fee Estimate
Table 2 is the Fee Estimate for Amendment 1. The revised Fee Estimate for the 2023 Water and Wastewater Rate Study including Amendment 1 is shown in Table 3.
Table 2: 2023 Water and Wastewater Rate Study. Amendment 1 Fee Estimate Hours Fee Estimate
Griffith Fortin (Note 2)
Task 9 Additional Services See Note 1 See Note 1 $2,622.74 Task 11: Update Rate Study
Task 11.1: Update Rate Calcs 56 18 $17,761.80
Task 11.2: Meetings 118 22 $34,248.90
Task 11.3: Report 12 40 $11,016.60
Total Amendment 1 186 80 $65,650.04
Note 1:
Amendment 1 budget includes time spent in September through December 2023.
September (Invoice RIALTO-4006) $982.50
October (Invoice RIALTO-4007) $681.25
November (Invoice RIALTO-4008) $1,775.00
December (Invoice RIALTO-4009) $2,041.50
Less Credit for Use of Original Project Budget ($2,857.51) Total $2,622.74
Note 2:
Hourly rates for Task 9 Additional Services through 12/31/23 are billed using 2023 hourly rates.
Hourly rates for Task 11 Services are billed using 2024 hourly rates.
FG Solutions adjusts its hourly rates on January 1 of each year.
Hourly Rates 2024 2025
Art Griffith, Principal and Project Manager $253.05 $265.70 Debi Fortin, Principal and Senior Consultant $199.50 $209.48 491