Agenda packet, regular meeting — Sierra Madre City Council, July 14, 2026 (part 1 of 5)

** Revised **

CITY OF
SIERRA
MADRE

CITY COUNCIL

REGULAR MEETING
AGENDA
Mayor Kristine Lowe | Mayor Pro Tem Gene Goss
Council Member Edward Garcia | Council Member Kelly Kriebs | Council Member Robert Parkhurst Tuesday, July 14, 2026, 5:30 PM
City Council Chambers, 232 W. Sierra Madre Blvd.

Zoom Webinar Link in Compliance with SB707

AMERICANS WITH DISABILITIES ACT
Pursuant to the Americans with Disabilities Act, persons with a disability who require a disability related modification or accommodation in order to participate in a meeting, including auxiliary aids or services, may request such modification or accommodation from the City Clerk at (626) 355-7135. Notification 48 hours prior to the meeting will enable the City to make reasonable arrangements to assure accessibility to the meeting.

PUBLIC COMMENT & ACCESS
The Brown Act provides the public with an opportunity to make public comments at any public meeting. As an alternative, public comment may be submitted by e-mail to [email protected] by 3:00PM on the day of the meeting. Emails will be acknowledged at the City Council meeting, filed into public record, and scanned onto the City website for public review.

A copy of the posted agenda and a live video stream of the meeting can be found on the City’s website at sierramadreca.gov , on Foothills Media website at foothillsmedia.org/sierramadre, and broadcast on Government Access Channel 3 (Spectrum).

If you require special assistance to participate in this meeting, please contact the City Clerk’s Office at (626) 355- 7135 at least 48 hours prior to the meeting.

CODE OF CONDUCT
The purpose of a City Council meeting is to conduct City business. Members of the public that behave in a manner that interrupts or obstructs the City Council’s ability to conduct City business may be asked to leave the meeting.

Any and all demonstrations which disrupt, interrupt, or obstruct the City Council’s ability to conduct City business are prohibited. No signs, posters, or other large objects shall be brought into the Council Chambers or other meeting place if doing so would disrupt, disturb, or otherwise impede the orderly course of the meeting.

1. CALL TO ORDER

2. PLEDGE OF ALLEGIANCE AND INSPIRATION
A. Council Member Kriebs

3. ROLL CALL OF CITY COUNCIL MEMBERS
Kristine Lowe, Mayor
Gene Goss, Mayor Pro Tem
Edward Garcia, Council Member
Kelly Kriebs, Council Member
Robert Parkhurst, Council Member

4. REPORT FROM CITY ATTORNEY REGARDING CLOSED SESSION
A. Conference with Real Property Negotiator
G.C. 54956.8
Property: 350 W. Sierra Madre Blvd., Sierra Madre Blvd., Sierra Madre, CA 91024 City Negotiator: City Manager Michael Bruckner
Negotiating Party: Unknown at this Time
Under Negotiation: Price and Terms of Payment
B. Personnel
Conference with Labor Negotiator
G.C. 54957.6
City Negotiators: City Manager Michael Bruckner and Assistant City Manager Miguel Hernandez Employee Organizations:

Sierra Madre Police Association Employee Organization
Sierra Madre Professional Firefighters' Association
C. Personnel Public Employee Discipline/Dismissal/Release G.C. 54957

5. SUPPLEMENTAL INFORMATION FROM CITY CLERK REGARDING AGENDA ITEMS

6. REPORTS FROM MAYOR AND CITY COUNCIL (including reports from City Council related to meetings attended at City expense per AB 1234)

7. REPORTS FROM CITY STAFF

8. PUBLIC COMMENT FOR ITEMS NOT ON THE AGENDA
Any person wishing to speak before the City Council is asked to complete a Speaker Card and provide it to the City Clerk prior to the start of the meeting. Speakers are generally limited to three (3) minutes per person and time may not be delegated; any changes to the allotted time will be announced prior to the Public Comment period.

Under the Brown Act, the City Council is prohibited from discussing or taking action on any item not listed on the posted agenda.

Addressing the City Council from the audience is not permitted; all comments addressing the Council must be made from the podium. Only public comment made from the podium will be recognized by the City Council and entered into public record.

9. PUBLIC HEARING
Any person wishing to speak before the City Council on a public hearing item is asked to complete a Speaker Card noting the agenda item number and provide it to the City Clerk prior to the start of the public hearing. Separate and apart from the applicant (who may speak longer in the discretion of the City Council) speakers are generally limited to three (3) minutes per person; any changes to the allotted time will be announced prior to the Public Comment period. Under the Brown Act, the City Council is prohibited from discussing or acting on any item not listed on the posted agenda. The applicant may additionally submit rebuttal comments, at the discretion of the City Council.

A. Resolution No. 26-64 Approving the City of Sierra Madre 2025 Urban Water Management Plan and Water Shortage Contingency Plan
Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

B. Continued Public Hearing and First Reading of Ordinance No. 1497 Amending Ch. 8.13 (Construction and Demolition Waste Disposal) of Title 8 (Health and Safety) of the Sierra Madre Municipal Code Recommendation: Approve
CEQA: 14 CCR 15061(b)(3)- common sense exemption, because it can be seen with certainty that there is no possibility that the activity may have a significant effect on the environment.

C. Resolution No. 26-73 Establishing Fiscal Year 2026-2027 Special Taxes and Annual Assessments for Community Facilities District No. 1 and Sewer Assessment Districts Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(4)- government fiscal activities.

D. Continued Public Hearing and Adoption of Resolution No. 26-61 Approving the FY 2026/2027 Fee Schedule
Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(4)- government fiscal activities.

10. CONSENT CALENDAR
All matters listed under the Consent Calendar are considered to be routine and can be acted on by one roll call vote. There will be no separate discussion of these items unless a member of the City Council requests that a specific item be removed from the Consent Calendar for separate discussion and action.

A. Approval of City Council meeting minutes from June 23, 2026 meeting Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

B. Resolution No. 26-65 Approval of Warrants for Payment Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(4)- government fiscal activities.

C. Resolution No. 26-66 Amending the City's Conflict of Interest Code Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

D. Resolution No. 26-67 Reciting the Facts of the Special Municipal Election held June 2, 2026, Declaring the Results and Such Matters as Provided by Law
Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

E. Resolution No. 26-68 Approving the First Amendment to Settlement Agreement with Ginkgo Stonehouse LLC and Resolution No. 26-69 Approving the Application to Extend Vesting Tentative Tract Map No. 65348 by Twelve Months
Recommendation: Approve
CEQA: Consistent with and in furtherance of a certified Final EIR adopted by Resolution 26-09 on January 27, 2026.

F. Resolution No. 26-70 Amending the Classification Plan and Salary Matrix For Classified Employees Association and Confidential-Exempt Employees, Adopting the Classified Employees Association MOU, and Adopting Amendments to the Terms and Conditions of Employment for the Executive Management and Confidential-Exempt Employees, Approving the City Manager’s Performance Bonus and Resolution No. 26-74 Approving the Fiscal Year 2026-27 Budget Adjustments and Appropriations Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

G. Resolution No. 26-71 Authorizing Form 130 Designation of Applicant's Agent Resolution for Non-State Agencies for California Office of Emergency Services (Cal OES) Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

H. Resolution No. 26-72 Approving Goals and Policies for the Creation of Community Facilities Districts Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(4)- government fiscal activities.

I. Amendment No. 1 to the Lease - Communications Site Agreement with STC One LLC for the Communications Facility at Sierra Vista Park
Recommendation: Approve
CEQA Project, exempt under: 14 CCR 15061(b)(3)- common sense exemption, because it can be seen with certainty that there is no possibility that the activity may have a significant effect on the environment.

J. Professional Services Agreement with Wittman Enterprises, LLC for Ambulance Billing and Collection Services
Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(4)- government fiscal activities.

11. DISCUSSION ITEMS
A. Update on Enterprise Fleet Management Program Implementation and Year 1 Vehicle Selection Recommendation: Approve
Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

B. Report, Discussion, Direction on Planning Commissioner Moran Request for Extended Leave of Absence
Recommendation: Provide staff with direction.

Not a CEQA Project under: 14 CCR 15378(b)(5)- organizational or administrative activities.

12. ITEMS FOR FUTURE AGENDAS

13. ADJOURNMENT
The City Council will adjourn to its next regular meeting on August 25, 2026.

Date Posted: July 10, 2026

CITY OF
SIERRA
MADRE

STAFF REPORT

PUBLIC WORKS SERVICES
DATE: July 14, 2026
TO: Honorable Mayor and City Council
FROM: Brian Dickinson, Director of Public Works
By: Steven McGee, Public Works and Utilities Manager
SUBJECT:

Resolution No. 26-64 Approving the City of Sierra Madre 2025 Urban Water Management Plan and Water Shortage Contingency Plan

RECOMMENDATION
It is recommended that the City Council:

1. Conduct a public hearing to receive public testimony regarding the City of Sierra Madre 2025 Urban Water Management Plan and Water Shortage Contingency Plan, and

2. Adopt Resolution No. 26-64 approving the City of Sierra Madre 2025 Urban Water Management Plan and Water Shortage Contingency Plan and authorizing required submittals to the California Department of Water Resources and other required entities.

SUMMARY
The City of Sierra Madre is an urban water supplier and is required to prepare, adopt, and periodically update an Urban Water Management Plan pursuant to the Urban Water Management Planning Act. The 2025 Urban Water Management Plan (UWMP) has been prepared to address applicable California Water Code requirements and incorporates the Water Shortage Contingency Plan (WSCP) as Chapter 8.

The UWMP evaluates the City's water service area, current and projected water demands, existing and planned water supplies, water service reliability, drought risk, demand management measures, and water shortage response actions. The WSCP establishes a six-level framework for responding to water shortages through demand-reduction measures, operational responses, communication protocols, enforcement provisions, and implementation procedures.

Adoption of Resolution No. 26-64 will approve the UWMP and WSCP and authorize staff to complete the required post-adoption submittals.

DISCUSSION & ANALYSIS
Water Code Section 10620(a) states, "Every urban water supplier shall prepare and adopt an urban water management plan." Water Code Section 10620(d)(2) mandates the preparation of a water shortage contingency plan. Under Water Code Section 10621, the plan must be updated "at least once every five years on or before July 1, in years ending in six and one, incorporating updated and new information from the five years preceding each update."
Under Water Code Section 10617, an "urban water supplier" means "a supplier, either publicly or privately owned, providing water for municipal purposes either directly or indirectly to more than 3,000 customers or supplying more than 3,000 acre-feet of water annually." The City meets the definition of an urban water supplier because it provides water for municipal purposes to more than 3,000 customers. Prior to adoption, the City must hold a public hearing pursuant to Water Code Section 10642 and publish notice once a week for two successive weeks pursuant to Government Code Section 6066.

Stetson Engineers, Inc. prepared the 2025 UWMP and WSCP in coordination with City staff. The documents were prepared consistent with the Department of Water Resources' 2025 Urban Water Management Plan Guidebook and include the required standardized tables and supporting appendices. Stan Chen and the Stetson Engineers project team will present the key findings and recommendations at tonight's meeting.

The City provided notice of preparation and public hearing notification to the required agencies, including surrounding cities, Los Angeles County, basin management entities, and the San Gabriel Valley Municipal Water District. The public hearing was also noticed by newspaper publication once a week for two successive weeks, with notices published on June 29, 2026, and July 6, 2026, prior to the July 14 City Council meeting.

The 2025 UWMP identifies the City's public water system as CA1910148 and reports 3,656 municipal connections and 2,461 acre-feet of water supplied in 2025. The City is identified as a retail supplier, and all volume data are reported in acre-feet. The City's service area population is estimated at 10,878 and is projected to increase modestly to approximately 11,073 by 2050. Total potable water use is projected at 2,516 acre-feet in 2030 and 2,555 acre-feet in 2050. In 2025, the City's actual water supply was 2,461 acre-feet, primarily from Raymond Basin groundwater. Future supply planning includes Main Basin groundwater and ongoing rehabilitation of water supply wells. The UWMP also evaluates supply and demand conditions under normal, single-dry-year, and multiple-dryyear scenarios and incorporates the WSCP as the City's framework for managing shortage conditions.

The WSCP uses the standard six water shortage levels, ranging from up to 10 percent shortage at Level 1 to greater than 50 percent shortage at Level 6. Shortage response actions include supply augmentation measures, demand-reduction measures, operational changes, communication protocols, monitoring, enforcement, and refinement procedures. This framework allows the City to evaluate annual water supply conditions and implement appropriate response actions when necessary.

Adoption of the 2025 UWMP and WSCP does not, by itself, approve a capital project, change water rates, or authorize construction. Future projects, programs, or rate-related actions identified in or informed by the UWMP or WSCP would be brought to the City Council separately, if required. Following adoption, staff will submit the adopted 2025 UWMP, WSCP, and required data tables to the Department of Water Resources and complete the additional distribution and public availability steps required by the Urban Water Management Planning Act.

STRATEGIC PLAN RELATIONSHIP
The adoption of the 2025 Urban Water Management Plan and Water Shortage Contingency Plan supports the City’s strategic goals related to infrastructure reliability, environmental stewardship, regulatory compliance, and long-term water supply planning.

ENVIRONMENTAL ANALYSIS
Adoption of this Resolution is exempt from the California Environmental Quality Act (CEQA) under Title 14 of the California Code of Regulations (CCR) Section 15306, as it “consists of basic data collection, research, experimental management, and resource evaluation activities which do not result in a serious or major disturbance to an environmental resource,” and under Title 14 CCR Section 15307 as “actions taken by regulatory agencies as authorized by state law or local ordinance to assure the maintenance, restoration, or enhancement of a natural resource where the regulatory process involves procedures for protection of the environment.”

FISCAL IMPACT
Adoption of Resolution No. 26-64 does not request a new appropriation. Preparation of the 2025 UWMP by Stetson Engineers, Inc. was authorized under Purchase Order No. 26-00274 in the amount of $21,000 for the 2025 Urban Water Management Plan consultant work. These costs are funded through approved Water Fund appropriations using GL Account No. 71000.81100.52200. Future projects, programs, or operational measures identified in the Urban Water Management Plan or Water Shortage Contingency Plan would be brought forward through the City's normal budget, procurement, and approval processes as needed.

Approved by:
___________________________
Michael Bruckner
City Manager
Attachments

1. Resolution 26-64 Adopting 2025 UWMP WSCP.pdf

2. City of Sierra Madre - 2025 UWMP FINAL.pdf

3. City of Sierra Madre - 2025 UWMP FINAL APPENDICES.pdf RESOLUTION NO. 26-64

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF

SIERRA MADRE, CALIFORNIA, APPROVING AND ADOPTING
THE 2025 URBAN WATER MANAGEMENT PLAN AND WATER

SHORTAGE CONTINGENCY PLAN

RECITALS
WHEREAS, the California Urban Water Management Planning Act, California Water Code Section 10610 et seq., requires every urban water supplier to prepare and adopt an Urban Water Management Plan and to update that plan at least once every five years;
WHEREAS, the City of Sierra Madre is an urban water supplier because it provides water for municipal purposes to more than 3,000 customers; WHEREAS, the City has prepared the City of Sierra Madre 2025 Urban Water Management Plan, including the Water Shortage Contingency Plan incorporated as Chapter 8, in accordance with applicable California Water Code requirements and Department of Water Resources guidance;
WHEREAS, the 2025 Urban Water Management Plan evaluates the City's water service area, population, water demands, water supplies, water service reliability, drought risk, demand management measures, and water shortage response actions;
WHEREAS, the Water Shortage Contingency Plan establishes the City's framework for responding to water shortage conditions, including six standard water shortage levels, demand reduction actions, supply augmentation measures, operational changes, communication protocols, enforcement provisions, and implementation procedures;
WHEREAS, the City provided notices of preparation and public hearing to cities, the County of Los Angeles, and other required entities in accordance with the Urban Water Management Planning Act;
WHEREAS, the City published notice of the public hearing in a newspaper of general circulation once a week for two successive weeks prior to the public hearing, with notices published on June 29, 2026, and July 6, 2026; WHEREAS, the City made the draft 2025 Urban Water Management Plan and Water Shortage Contingency Plan available for public inspection prior to adoption;
WHEREAS, adoption of the 2025 Urban Water Management Plan and Water Shortage Contingency Plan ensures the City maintains statutory compliance with California Water Code requirements;
WHEREAS, on July 14, 2026, the City Council conducted a duly noticed public hearing to receive public testimony regarding the 2025 Urban Water Management Plan and Water Shortage Contingency Plan;
WHEREAS, the City Council has considered the staff report, the 2025 Urban Water Management Plan, the Water Shortage Contingency Plan, the administrative record, and all written and oral testimony received before and during the public hearing; and
WHEREAS, adoption of the 2025 Urban Water Management Plan and Water Shortage Contingency Plan will allow the City to complete required post-adoption submittals to the California Department of Water Resources and other required entities.

THEREFORE, THE CITY COUNCIL OF THE CITY OF SIERRA MADRE, CALIFORNIA, DOES RESOLVE AS FOLLOWS:

SECTION 1. Recitals. The Recitals above are true and correct and incorporated herein by reference.

SECTION 2. CEQA. The City Council finds that adoption of this Resolution is exempt from CEQA under 14 CCR 15306 as it "consists of basic data collection, research, experimental management, and resource evaluation activities which do not result in a serious or major disturbance to an environmental resource" and under 14 CCR 15307 as "actions taken by regulatory agencies as authorized by state law or local ordinance to assure the maintenance, restoration, or enhancement of a natural resource where the regulatory process involves procedures for protection of the environment." SECTION 3. Adoption of 2025 Urban Water Management Plan and Water Shortage Contingency Plan. The City Council hereby approves and adopts the City of Sierra Madre 2025 Urban Water Management Plan and the Water Shortage Contingency Plan incorporated therein as Chapter 8.

SECTION 4. Authorization for Submittal and Implementation. The City Manager, Public Works Director, and their designees are authorized and directed to make any necessary non-substantive corrections to the adopted plans; submit the adopted 2025 Urban Water Management Plan, Water Shortage Contingency Plan, and required data tables to the California Department of Water Resources within the time required by law; submit the adopted documents to the California State Library and other required entities; make the adopted documents available for public review; and take all other administrative actions necessary to carry out this Resolution.

SECTION 5. Severability. If any sections, subsections, subdivisions, paragraphs, sentences, clauses, or phrases of this Resolution or any part hereof or exhibit hereto are for any reason held to be invalid, such invalidity shall not affect the validity of the remaining portions of this Resolution or any part thereof or exhibit thereto. The City Council hereby declares that it would have passed each section, subsection, subdivision, paragraph, sentence, clause, or phrase hereof, irrespective of the fact that any one or more sections, subsections, subdivisions, paragraphs, sentences, clauses, or phrases be declared invalid.

SECTION 6. Certification. Pursuant to Government Code Section 36932, the City Clerk shall certify the passage, approval, and adoption of this Resolution by the City Council.

SECTION 7. Effective Date. This Resolution shall take effect immediately upon adoption.

PASSED, APPROVED, AND ADOPTED this 14th day of July 2026. ____________________________________
Kristine Lowe, Mayor
I HEREBY CERTIFY that the foregoing Resolution was duly passed, approved, and adopted by the City Council of the City of Sierra Madre, California, at a meeting held on the 14th day of July 2026, by the following vote:

AYES:

NOES:

ABSENT:

ABSTAINED:

Laura Aguilar, City Clerk
Approved as to form:

Aleks Giragosian, City Attorney
M AY 2026 FINAL D RAFT
City of Sierra Madre
2025
Urban Water Management Plan

TABLE OF CONTENTS
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CHAPTER 1 ............................................................................................................................ 1-1 URBAN WATER MANAGEMENT PLAN INTRODUCTION AND OVERVIEW ............................... 1-1 UPDATED GUIDANCE FOR 2025 URBAN WATER MANAGEMENT PLANS ........................ 1-4 SUBMITTAL TABLES .......................................................................................................... 1-5 INCLUSION OF SUBMITTAL TABLES .................................................................... 1-5 OPTIONAL PLANNING TOOL ............................................................................... 1-6 RECOMMENDED URBAN WATER MANAGEMENT PLAN ORGANIZATION ....................... 1-6 URBAN WATER MANAGEMENT PLANS IN RELATION TO OTHER EFFORTS ..................... 1-7 SPECIFIC CONSIDERATIONS ................................................................................ 1-7 DEPARTMENT OF WATER RESOURCES’ REVIEW PROCESS .............................................. 1-9 URBAN WATER MANAGEMENT PLANS AND GRANT OR LOAN ELIGIBILITY .................... 1-9 TIPS FOR UWMP PREPARERS ......................................................................................... 1-10 CHAPTER 2 ............................................................................................................................ 2-1 URBAN WATER MANAGEMENT PLAN PREPARATION ........................................................... 2-1 BASIS FOR PREPARING A PLAN ........................................................................................ 2-2 SUPPLIERS WITH BOTH WHOLESALE AND RETAIL SALES .................................... 2-3 PUBLIC WATER SYSTEMS .................................................................................... 2-4 INDIVIDUAL OR REGIONAL PLANS ................................................................................... 2-4 REGIONAL REPORTING ........................................................................................ 2-5 FISCAL OR CALENDAR YEAR AND UNITS OF MEASURE .................................................... 2-5 FISCAL OR CALENDAR YEAR ................................................................................ 2-5 UNITS OF MEASURE ............................................................................................ 2-6 COORDINATION AND OUTREACH .................................................................................... 2-6 WHOLESALE AND RETAIL COORDINATION ......................................................... 2-6 COORDINATION WITH OTHER AGENCIES AND THE COMMUNITY ..................... 2-7 2-7
NOTICE TO CITIES AND COUNTIES ...................................................................... 2-7 SUBMITTAL TABLES .......................................................................................................... 2-8 SUBMITTAL TABLE 2-1: PWSs ............................................................................. 2-8 SUBMITTAL TABLE 2-2: PLAN TYPE IDENTIFICATION .......................................... 2-9 SUBMITTAL TABLE 2-3: SUPPLIER INFORMATION ............................................ 2-10 SUBMITTAL TABLE 2-4: WATER SUPPLIER INFORMATION EXCHANGE ............ 2-11 CHAPTER 3 ............................................................................................................................ 3-1 SERVICE AREA DESCRIPTION ................................................................................................. 3-1 GENERAL DESCRIPTION .................................................................................................... 3-2 SERVICE AREA BOUNDARY MAPS .................................................................................... 3-3 SERVICE AREA CLIMATE ................................................................................................... 3-4 SERVICE AREA POPULATION AND DEMOGRAPHICS ........................................................ 3-6

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SERVICE AREA POPULATION ............................................................................... 3-6 OTHER SOCIAL, ECONOMIC, AND DEMOGRAPHIC FACTORS ............................. 3-8 LAND USES WITHIN THE SERVICE AREA .......................................................................... 3-8 SUBMITTAL TABLES ........................................................................................................ 3-10 SUBMITTAL TABLE 3-1: POPULATION - CURRENT AND PROJECTED ................. 3-10 CHAPTER 4 ............................................................................................................................ 4-1 WATER USE CHARACTERIZATION .......................................................................................... 4-1 NON-POTABLE VERSUS POTABLE WATER USE ................................................................ 4-2 PAST, CURRENT, AND PROJECTED WATER USE BY SECTOR ............................................. 4-2 WATER-USE SECTORS LISTED IN WATER CODE .................................................. 4-4

OPTIONAL WATER-USE SECTORS IN ADDITION TO THOSE LISTED IN WATER CODE ...................................................................................................... 4-5 PAST WATER USE ................................................................................................ 4-6 CURRENT WATER USE ......................................................................................... 4-6 PROJECTED WATER USE ...................................................................................... 4-7 DISTRIBUTION SYSTEM WATER LOSS ............................................................................. 4-17 PREVIOUS FIVE YEARS DISTRIBUTION SYSTEM LOSSES .................................... 4-17

PROGRESS TOWARD MEETING THE WATER LOSS PERFORMANCE
STANDARD ........................................................................................................ 4-18 SUBMITTAL TABLES ........................................................................................................ 4-20 TABLE 4-1: TOTAL USES FOR POTABLE AND NON-POTABLE WATERACTUAL ............................................................................................................. 4-20 TABLE 4-2: TOTAL USES OF POTABLE AND NON-POTABLE WATER— PROJECTED ........................................................................................................ 4-21 TABLE 4-3: INCLUSION IN WATER-USE PROJECTIONS ...................................... 4-22 OPTIONAL TABLE 4-4: PASSIVE WATER SAVINGS PROJECTION ........................ 4-22 TABLE 4-5: WATER LOSS AUDIT REPORTING .................................................... 4-23 TABLE 4-6: PROGRESS TOWARD 2028 WATER LOSS STANDARD ..................... 4-24 CHAPTER 5 ............................................................................................................................ 5-1 SB X7-7 BASELINES, 2020TARGETS, AND 2025 REPORTING ................................................... 5-1 REPORTING REQUIREMENTS FOR WHOLESALE AGENCIES .............................................. 5-2 REPORTING REQUIREMENTS FOR RETAIL SUPPLIERS ...................................................... 5-2 SUPPLIER WAS NOT AN URBAN RETAIL WATER SUPPLIER ................................. 5-3 SUPPLIER MET 2020 TARGET IN 2020 ................................................................. 5-3 SUPPLIER DID NOT MEET 2020 TARGET IN 2020—NO CHANGE TO
SERVICE AREA ..................................................................................................... 5-4 SUPPLIER DID NOT MEET 2020 TARGET—CHANGE TO SERVICE AREA SINCE 2020 .......................................................................................................... 5-4 FUNDING ELIGIBILITY .......................................................................................... 5-4

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NEXUS TO STATE WATER BOARD URBAN WATER-USE OBJECTIVES (NOT REQUIRED FOR UWMPs) ..................................................................................... 5-5 SUBMITTAL TABLES .......................................................................................................... 5-7 CHAPTER 6 ............................................................................................................................ 6-1 NORMAL-YEAR WATER SUPPLY CHARACTERIZATION ........................................................... 6-1 WATER SUPPLY ANALYSIS OVERVIEW ............................................................................. 6-2 SPECIFIC ANALYSIS APPLICABLE TO ALL WATER SUPPLY SOURCES .................... 6-4 SPECIAL CONSIDERATIONS ................................................................................. 6-7 WATER SUPPLY CHARACTERIZATION ............................................................................... 6-8 PURCHASED OR IMPORTED WATER ................................................................... 6-8 GROUNDWATER.................................................................................................. 6-9 SURFACE WATER ............................................................................................... 6-38 STORMWATER .................................................................................................. 6-38 WASTEWATER AND RECYCLED WATER............................................................. 6-38 DESALINATED WATER OPPORTUNITIES ............................................................ 6-44 WATER EXCHANGES AND TRANSFERS .............................................................. 6-45 SUPPLY FROM STORAGE ................................................................................... 6-47 OTHER ............................................................................................................... 6-47 FUTURE WATER PROJECTS ................................................................................ 6-47 ENERGY USE ................................................................................................................... 6-48 SUBMITTAL TABLES ........................................................................................................ 6-51 TABLE 6-1: GROUNDWATER VOLUME PUMPED ............................................... 6-51 TABLE 6-2: WASTEWATER COLLECTED WITHIN SERVICE AREA ........................ 6-52 TABLE 6-3: WASTEWATER TREATMENT AND OUTCOMES WITHIN UWMP SERVICE AREA ................................................................................................... 6-53 TABLE 6-4: RECYCLED WATER DIRECT BENEFICIAL USES WITHIN SERVICE AREA .................................................................................................................. 6-54 TABLE 6-5: 2020 UWMP RECYCLED WATER-USE PROJECTION
COMPARED TO 2025 ACTUAL ........................................................................... 6-55 TABLE 6-6: METHODS TO ENCOURAGE FUTURE RECYCLED WATER USE ......... 6-56 TABLE 6-7: EXPECTED FUTURE WATER SUPPLY PROJECTS OR PROGRAMS ..... 6-57 TABLE 6-8: WATER SUPPLIES—ACTUAL ............................................................ 6-57 OPTIONAL TABLE 6-8DS: SOURCE DESALINATION BY SUPPLIER ...................... 6-59 TABLE 6-9: WATER SUPPLIES—PROJECTED ...................................................... 6-60 CHAPTER 7 ............................................................................................................................ 7-1 WATER SERVICE RELIABILITY AND DROUGHT RISK ASSESSMENT .......................................... 7-1 CONSTRAINTS ON WATER SOURCES CONSIDERATIONS .................................................. 7-2 SERVICE RELIABILTY - CONSTRAINTS ON WATER SOURCES ............................... 7-3 WATER SERVICE RELIABILITY ASSESSMENT ..................................................................... 7-4 WSRA YEAR-TYPE CHARACTERIZATION .............................................................. 7-7

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WSRA SUPPLY AND DEMAND COMPARISON ..................................................... 7-8 WSRA DESCRIPTION OF MANAGEMENT TOOLS AND OPTIONS ....................... 7-10 DROUGHT RISK ASSESSMENT ........................................................................................ 7-11 DRA DATA, METHODS, AND BASIS FOR WATER SHORTAGE CONDITIONS ....... 7-12 DRA INDIVIDUAL WATER SOURCE RELIABILITY ................................................ 7-14 DRA TOTAL WATER SUPPLY AND USE COMPARISON ....................................... 7-16 OPTIONAL PLANNING TOOL WORKBOOK ...................................................................... 7-17 SUBMITTAL TABLES ........................................................................................................ 7-18 OPTIONAL TABLE 7-1: BASIS OF WATER-YEAR DATA (WSRA) .......................... 7-18 TABLE 7-2: NORMAL-YEAR SUPPLY AND USE COMPARISON ............................ 7-19 TABLE 7-3: SINGLE-DRY-YEAR SUPPLY AND USE COMPARISON ....................... 7-20 TABLE 7-4: MULTIPLE DRY YEARS SUPPLY AND USE COMPARISON ................. 7-21 TABLE 7-5: FIVE-YEAR DROUGHT RISK ASSESSMENT ........................................ 7-22 CHAPTER 8 ............................................................................................................................ 8-1 WATER SHORTAGE CONTINGENCY PLAN .............................................................................. 8-1 WATER SUPPLY RELIABILITY ANALYSIS ............................................................................ 8-3 ANNUAL WATER SUPPLY AND DEMAND ASSESSMENT PROCEDURES ............................ 8-4 DECISION-MAKING PROCESS .............................................................................. 8-5 DATA AND METHODOLOGIES ............................................................................. 8-6 SIX STANDARD WATER SHORTAGE LEVELS ...................................................................... 8-8 SHORTAGE RESPONSE ACTIONS ...................................................................................... 8-9 SUPPLY AUGMENTATION .................................................................................... 8-9 DEMAND REDUCUTION .................................................................................... 8-10 OPERATIONAL CHANGES .................................................................................. 8-13 ADDITIONAL MANDATORY RESTRICTIONS ....................................................... 8-14 EMERGENCY RESPONSE PLAN .......................................................................... 8-14 SEISMIC RISK ASSESSMENT AND MITIGATION PLAN ........................................ 8-16 SHORTAGE RESPONSE ACTION EFFECTIVENESS ............................................... 8-19 COMMUNICATION PROTOCOLS .................................................................................... 8-21 COMPLIANCE AND ENFORCEMENT ............................................................................... 8-23 LEGAL AUTHORITIES....................................................................................................... 8-23 FINANCIAL CONSEQUENCES OF WSCP .......................................................................... 8-24 MONITORING AND REPORTING ..................................................................................... 8-25 WSCP REFINEMENT PROCEDURES ................................................................................. 8-26 SPECIAL WATER FEATURE DISTINCTION ........................................................................ 8-27 PLAN ADOPTION, SUBMITTAL, AVAILABILITY, AND AMENDMENT PROCEDURES......... 8-28 RESOURCES AND REFERENCES....................................................................................... 8-29 SUBMITTAL TABLES ........................................................................................................ 8-29 TABLE 8-1: CROSS REFERENCE FOR STANDARD VS. SUPPLIER SHORTAGE LEVELS ............................................................................................................... 8-30 TABLE 8-2: SUPPLY AUGMENTATION AND OTHER ACTIONS ............................ 8-31 TABLE 8-3: DEMAND-REDUCTION ACTIONS ..................................................... 8-32

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CHAPTER 9 ............................................................................................................................ 9-1 DEMAND MANAGEMENT MEASURES ................................................................................... 9-1 DEMAND MANAGEMENT MEASURES FOR RETAIL SUPPLIERS ........................................ 9-2 IMPLEMENTATION OVER THE PAST FIVE YEARS ................................................. 9-3 IMPLEMENTATION TO ACHIEVE WATER-USE TARGETS ..................................... 9-4 REQUIRED DEMAND MANAGEMENT MEASURES ............................................... 9-5 DEMAND MANAGEMENT MEASURES FOR WHOLESALE SUPPLIERS ............................. 9-10 CHAPTER 10 ........................................................................................................................ 10-1 PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION ..................................................... 10-1 PLAN COMPLETION TIMELINE ....................................................................................... 10-2 10-2
NOTICE OF PLAN PREPARATION .................................................................................... 10-2 NOTICE OF PUBLIC HEARING ......................................................................................... 10-3 PUBLIC HEARING AND ADOPTION ................................................................................. 10-4 PLAN SUBMITTAL ........................................................................................................... 10-5

SUBMITTING A UWMP AND WATER SHORTAGE CONTINGENCY PLAN TO DWR .................................................................................................................. 10-5 ELECTRONIC DATA SUBMITTAL......................................................................... 10-6

SUBMITTING A UWMP, INCLUDING WSCP, TO THE CALIFORNIA STATE LIBRARY ............................................................................................................. 10-6 SUBMITTING A UWMP TO CITIES AND COUNTIES ............................................ 10-7 PUBLIC AVAILABILITY ..................................................................................................... 10-7 NOTIFICATION TO PUBLIC UTILITIES COMMISSION ....................................................... 10-8 PLAN IMPLEMENTATION ............................................................................................... 10-8 AMENDING AN ADOPTED UWMP OR WATER SHORTAGE CONTINGENCY PLAN .......... 10-8 AMENDING A UWMP OR WSCP ........................................................................ 10-9 SUBMITTING REVISED WATER SHORTAGE CONTINGENCY PLAN ..................... 10-9

CALIFORNIA DEPARTMENT OF WATER RESOURCES REVIEW OF SUBMITTED PLANS ........................................................................................................................... 10-10 SUBMITTAL TABLES ...................................................................................................... 10-11 SUBMITTAL TABLE 10-1: NOTIFICATION TO CITIES AND COUNTIES ............... 10-11

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LIST OF TABLES

Table 2-1 Public Water Systems ................................................................................................................... 2-8 Table 2-2 Plan Type Identification ................................................................................................................ 2-9 Table 2-3 Supplier Information ................................................................................................................... 2-10 Table 2-4 Water Supplier Information Exchange........................................................................................ 2-11 Table 3-1 Population - Current and Projected ............................................................................................ 3-10 Table 4-1 Total Uses for Potable and Non-Potable Water-Actual .............................................................. 4-20 Table 4-2 Total Uses for Potable and Non-Potable Water - Projected ....................................................... 4-21 Table 4-3 Inclusion in Water-Use Projections ............................................................................................. 4-22 Table 4-4 Passive Savings Projection .......................................................................................................... 4-22 Table 4-5 Water Loss Audit Reporting ........................................................................................................ 4-23 Table 4-6 Progress Toward 2028 Water Loss Standard .............................................................................. 4-24 Table 5-1 SB X7-7 2020 Target Progress ....................................................................................................... 5-7 Table 6-1 Groundwater Volume Pumped ................................................................................................... 6-51 Table 6-2 Wastewater Collected Within Service Area ................................................................................ 6-52 Table 6-3 Wastewater Treatment and Outcomes Within UWMP Service Area ......................................... 6-53 Table 6-4 Recycled Water Direct Beneficial Uses Within Service Area ...................................................... 6-54 Table 6-5 2020 UWMP Recycled Water-Use Projection Compared to 2025 Actual .................................. 6-55 Table 6-6 Methods to Encourage Future Recycled Water Use ................................................................... 6-56 Table 6-7 Expected Future Water Supply Projects or Programs ................................................................ 6-57 Table 6-8 Water Supplies— Actual ............................................................................................................. 6-59 Table 6-9 Water Supplies—Projected ......................................................................................................... 6-60 Table 7-1 Basis of Water-Year Data (Reliability Assessment) ..................................................................... 7-18 Table 7-2 Normal-Year Supply and Use Comparison .................................................................................. 7-19 Table 7-3 Single-Dry-Year Supply and Use Comparison ............................................................................. 7-20 Table 7-4 Multiple Dry Years Supply and Use Comparison ........................................................................ 7-21 Table 7-5 Five-Year Drought Risk Assessment ............................................................................................ 7-22 Table 8-1 Cross-Reference for Standard vs. Supplier Shortage Levels ....................................................... 8-30 Table 8-2 Supply Augmentation and Other Actions ................................................................................... 8-31 Table 8-3 Demand-Reduction Actions ........................................................................................................ 8-32 Table 10-1 Notification to Cities and Counties ........................................................................................... 10-11

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LIST OF FIGURES
Figure 1 Water Service Area
Figure 2 Water Service Area and City Boundaries
Figure 3 Raymond Basin Location
Figure 4 Main Basin Location

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LIST OF APPENDICES
Appendix A DWR Standardized Tables
Appendix B Completed Plan Checklist
Appendix C Demonstration of Reduced Imported Water Reliance Appendix D Notification Letters and Notices of Public Hearing Appendix E Climate Change Considerations (CAL-ADAPT Data) Appendix F Raymond Basin Adjudication
Appendix G Long Beach Judgment
Appendix H Main Basin Judgment
Appendix I Mandatory Water Conservation Plan
Appendix J City of Sierra Madre Hazard Mitigation Plan
Appendix K Los Angeles County All-Hazards Mitigation Plan Appendix L Water Rates
Appendix M Resolution adopting the 2025 Plan and the Water Shortage Contingency Plan

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LIST OF ACRONYMS
AB Assembly Bill
AF Acre-feet
AFY Acre-feet per year
AMI Advanced Metering Infrastructure
Annual Assessment Annual Water Supply and Demand Assessment AWWA American Water Works Association
BPOU Baldwin Park Operable Unit
CECs Constituents of emerging concern
Central District Central Basin Municipal Water District City City of Sierra Madre
CIMIS California Irrigation Management Information System CWC California Water Code
CWEA Cooperative Water Exchange Agreement
DACs Disadvantaged Communities
DOF Department of Finance
DPW Department of Public Works
DRA Drought Risk Assessment
DWR Department of Water Resources
ERP Emergency Response Plan
ETo Evapotranspiration
FY Fiscal Year
GCMs General Circulation Models
GIS Geographical Information Systems
GPCD Gallons per capita per day
gpm Gallons per minute
GSP Groundwater Sustainability Plan
IRP Integrated Resource Plan
JPL Jet Propulsion Laboratory
Key Well Baldwin Park Key Well
kWh Kilowatt Hours
LACSD Los Angeles County Sanitation Districts
LARWQCB Los Angeles Regional Water Quality Control Board M&I Municipal and Industrial
Main Basin Main San Gabriel Basin
Main Basin Watermaster Main San Gabriel Basin Watermaster MGD Million gallons per day
mg/l Milligrams per liter
MSL Mean seal level
MWD Metropolitan Water District of Southern California
NASA National Aeronautics and Space Administration
NCP National Contingency Plan

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NDMA N-nitrosodimethylamine
OSY Operating Safe Yield
OWL Opportunities for Water Leadership
PCE Tetrachloroethylene
Plan Urban Water Management Plan
RCP Representative Concentration Pathway
RDA
Water Resource Development Assessment or Supplemental Water Reliability Storage Program
RDA II
Water Resource Development Assessment for Stormwater
Augmentation Program
ROD Records of Decision
RRA Risk and Resilience Assessment
SGVMWD San Gabriel Valley Municipal Water District
SB Senate Bill
SCAG Southern California Association of Governments
SCE Southern California Edison
SGMA Sustainable Groundwater Management Act
SNMP San Gabriel Valley Salt and Nutrient Management Plan SWRCB State Water Resources Control Board
SWRCB-DDW State Water Resources Control Board - Division of Drinking Water SWP State Water Project
TCE Trichloroethylene
TDS Total Dissolved Solids
TVMWD Three Valleys Municipal Water District
Upper Water Upper San Gabriel Valley Municipal Water District USEPA U.S. Environmental Protection Agency
UWMP Urban Water Management Plan
VOCs Volatile Organic Compounds
WNWRP Whittier Narrows Water Reclamation Plant
WQA Water Quality Authority
WRCC Western Regional Climate Center
WRD Water Replenishment District of Southern California WSCP Water Shortage Contingency Plan
WSRA Water Supply Reliability Assessment
WUE Water Use Efficiency

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2025 Urban Water Management Plan

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CHAPTER 1

URBAN WATER MANAGEMENT PLAN INTRODUCTION AND OVERVIEW

LAY DESCRIPTION - INTRODUCTION
An urban water supplier is defined (pursuant to Section 10617 of the California Water Code1) as “a supplier, either publicly or privately owned, providing water for municipal purposes either directly or indirectly to more than 3,000 customers or supplying more than 3,000 acre-feet of water annually. An urban water supplier includes a supplier or contractor for water, regardless of the basis of right, which distributes or sells for ultimate resale to customers.”
The City of Sierra Madre (City) is classified as an urban water supplier because it serves more than 3,000 customers (i.e. individual metered accounts) for municipal purposes.

In accordance with the “Urban Water Management Planning Act”, which was enacted by the California Legislature in 1983, every urban water supplier (including the City) is required to prepare and adopt an Urban Water Management Plan (UWMP), periodically review its UWMP, and incorporate updated and new information into an updated UWMP at least once every five years.

The City’s most recent update was its 2020 UWMP (or 2020 Plan) which was submitted to, and approved by, the California Department of Water Resources (DWR). Urban water suppliers (including the City) are required to complete and submit their 2025 UWMPs to DWR by July 1st, 2026.
1 References to CWC Sections in this 2025 UWMP were obtained from https://leginfo.legislature.ca.gov/ 2025 Urban Water Management Plan

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The current requirements for preparing the UWMP are included in California Water Code (CWC) Sections 10608 through 10657. The City’s 2025 UWMP (or 2025 Plan) was prepared consistent with the CWC and the recommended organization provided in DWR’s Final “Urban Water Management Plan Guidebook 2025” (Final 2025 UWMP Guidebook), dated January 2026.

The UWMP provides urban water suppliers (including the City) with a reliable management action plan for long-term resource planning to ensure adequate water supplies are available to meet existing and future water supply needs. In addition, the 2025 Plan incorporates water supply reliability determinations resulting from potential prolonged drought, regulatory revisions, and/or changing climatic conditions.

The City’s 2025 Plan consists of the following Chapters:

2025 Urban Water Management Plan

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LAY DESCRIPTION – CHAPTER 1

URBAN WATER MANAGEMENT PLAN INTRODUCTION AND OVERVIEW
Chapter 1 (Urban Water Management Plan Introduction and Overview) of the City’s 2025 Plan discusses and provides the following:
 An overall lay description of the 2025 Plan, including California Water Code and Urban Water Management Plan Act requirements, is provided. The City is required to prepare an Urban Water Management Plan.
 The City’s 2025 Plan was prepared consistent with the recommended organization provided in DWR’s Final “Urban Water Management Plan Guidebook 2025”, dated January 2026. A description regarding the organization of the 2025 Plan, including a summary of each Chapter, is provided. The City’s Water Shortage Contingency Plan (discussed in Chapter 8) is also included in the 2025 Plan.  The 2025 Plan incorporates DWR’s water use and supply tables (standardized Submittal Tables) for the reporting and submittal of UWMP data. Relevant Submittal Tables are included at the end of each Chapter in this 2025 Plan and in Appendix A.
 The City’s coordination efforts with other planning agencies are discussed, including coordination efforts with San Gabriel Valley Municipal Water District and the Southern California Association of Governments
 The City’s eligibility to receive grants and loans administered by the State of California and/or DWR, as a result of preparing the 2025 Plan, is discussed.  Information is provided which demonstrates the City’s prior, continued, and projected reduction on imported water supplies obtained (either directly or indirectly) from the Sacramento-San Joaquin Delta (Delta). The City has reduced its reliance on the imported water supplies for Fiscal Year 2014-15, Fiscal Year 2025 Urban Water Management Plan

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2019-2020, and Fiscal Year 2024-25. In addition, the City is projected to continue reducing its reliance on the imported water supplies through Fiscal Year 2049-50.  The checklist developed by DWR and used by the City to incorporate the specific UWMP requirements is discussed. The completed checklist is provided in Appendix B.

UPDATED GUIDANCE FOR 2025 URBAN WATER MANAGEMENT PLANS
The City’s 2025 Plan was prepared consistent with the recommended organization provided in DWR’s Final “Urban Water Management Plan Guidebook 2025”, dated January 2026. DWR provided the following updated guidance for the preparation of the 2025 Plans (in comparison to the preparation of the 2020 Plans):
 There have been minor changes to the Water Code since the 2020 Plans were submitted; primarily, several definitions have been added (none of these change the requirements for 2025 Plans).
 DWR and the State Water Resources Control Board are using the same criteria to determine when a water supplier with multiple Public Water Systems is considered an Urban Water Supplier subject to UWMP requirements.  DWR has updated its submittal tables to reflect the current reporting year, improve accuracy of reporting, and more clearly identify information required by Water Code and optional information.
 There has been no change to the Water Code regarding water loss standard reporting since the 2020 Plans were submitted. However, water suppliers can report progress toward compliance with their 2028 Water Loss Standard in the 2025 Plans (see Table 4-6).
 The State Water Resources Control Board has adopted regulations for the use of direct potable reuse (DPR) since the 2020 Plan reporting. To allow for reporting 2025 Urban Water Management Plan

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of DPR, minor changes have been made to the supply and demand tables in the 2025 Plans.
 While projections for lower-income housing were required in the 2020 Plans, additional guidance has been provided for optional reporting of the method used to project water use for lower-income housing.
 In previous years, the guidance for reporting water placed into storage did not differentiate between long-term storage (i.e., water placed into storage one year but extracted in a future year) and short-term storage (i.e., water that is placed into storage and extracted the same year). When a water supplier reports water placed into storage and then reports it was retrieved in the same year (short-term storage) it can cause a double counting error. Additional guidance has been provided recommending that water suppliers do not report water into and out of short-term storage.

SUBMITTAL TABLES

INCLUSION OF SUBMITTAL TABLES
CWC 10644.
(a)(2) The plan, or amendments to the plan, submitted to the department … shall include any standardized forms, tables, or displays specified by the department.

The City’s 2025 Plan includes the completion of DWR’s standardized Submittal Tables for the reporting and submittal of UWMP data. Relevant Submittal Tables are included at the end of each Chapter in this 2025 Plan. In addition, all Submittal Tables are provided collectively in Appendix A.
2025 Urban Water Management Plan

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OPTIONAL PLANNING TOOL
DWR has created an optional “Planning Tool Worksheet” for water suppliers to review and assess monthly water use trends. DWR has deemed the tool as optional and the City is not required by DWR to use the tool.

RECOMMENDED URBAN WATER MANAGEMENT PLAN ORGANIZATION
The City’s 2025 Urban Water Management Plan (2025 Plan) was prepared consistent with the recommended organization provided in DWR’s Final “Urban Water Management Plan Guidebook 2025” (Final 2025 UWMP Guidebook), dated January 2026. The City’s 2025 Plan consists of the following Chapters:

Chapter 1 Urban Water Management Plan Introduction and Overview Chapter 2 Plan Preparation
Chapter 3 Service Area Description
Chapter 4 Water Use Characterization
Chapter 5 SB X7-7 Baselines, 2020 Targets, and 2025 Reporting Chapter 6 Normal-Year Water Supply Characterization
Chapter 7 Water Service Reliability and Drought Risk Assessment Chapter 8 Water Shortage Contingency Plan
Chapter 9 Demand Management Measures
Chapter 10 Plan Adoption, Submittal, and Implementation Pursuant to CWC requirements, the City’s 2025 Plan incorporates DWR’s water use and supply tables (standardized Submittal Tables ) for the reporting and submittal of UWMP data. DWR’s standardized Submittal Tables are provided within the body of the 2025 Plan text as well as in Appendix A.
2025 Urban Water Management Plan

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The City’s 2025 Plan also provides supporting documents (appendices) including notification letters of the Plan update, public notice of the Plan hearing, and adoption resolution from the City’s governing body. Further discussions regarding these supporting documents are provided within the individual Chapters of the City’s 2025 Plan.

URBAN WATER MANAGEMENT PLANS IN RELATION TO OTHER EFFORTS The City is a sub-agency of San Gabriel Valley Municipal Water District (SGVMWD), a wholesale water agency. SGVMWD prepared a 2025 Plan which is incorporated in the City’s 2025 UWMP by reference. In addition, the City provided its 2025 UWMP to SGVMWD which includes water use projections in five-year increments for a normal year, a single dry year, and a five consecutive year drought over the next 25 years.

SPECIFIC CONSIDERATIONS

1.4.1.1 DEMONSTRATION OF CONSISTENCY WITH THE DELTA PLAN

FOR PARTICIPANTS IN COVERED ACTIONS
Pursuant to DWR, an urban water supplier that anticipates participating in or receiving water from a proposed project (or “covered action”) such as a multi-year water transfer, conveyance facility, or new diversion that involves transferring water through, exporting water from, or using water in the Sacramento-San Joaquin Delta (Delta) should provide information in their Plans for use in demonstrating consistency with Delta Plan Policy WR P1, “Reduce Reliance on the Delta Through Improved Regional Water Self-Reliance”. In addition, pursuant to California Code of Regulations, Title 23, § 5003:
(c)(1) Water suppliers that have done all of the following are contributing to reduced reliance on the Delta and improved regional self-reliance and are therefore consistent with this policy:
2025 Urban Water Management Plan

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(A) Completed a current Urban or Agricultural Water Management Plan (Plan) which has been reviewed by the California Department of Water Resources for compliance with the applicable requirements of Water Code Division 6, Parts 2.55, 2.6, and 2.8;
(B) Identified, evaluated, and commenced implementation, consistent with the implementation schedule set forth in the Plan, of all programs and projects included in the Plan that are locally cost effective and technically feasible which reduce reliance on the Delta; and
(C) Included in the Plan, commencing in 2015, the expected outcome for measurable reduction in Delta reliance and improvement in regional selfreliance. The expected outcome for measurable reduction in Delta reliance and improvement in regional self-reliance shall be reported in the Plan as the reduction in the amount of water used, or in the percentage of water used, from the Delta watershed. For the purposes of reporting, water efficiency is considered a new source of water supply, consistent with Water Code section 1011(a).

The City has reduced its reliance on imported water supplies for fiscal year (FY) 2014-15, FY 2019-20, and FY 2024-25. In addition, the City is projected to continue reducing its reliance on imported water supplies through FY 2049-50. A further discussion which demonstrates the City’s measurable reduction in imported water supplies and improvement in regional self-reliance is provided in Appendix C.

1.4.1.2 PERMITTING FOR OCEAN DESALINATION PROJECTS
The City is currently not considering the development of a desalinated water project.

However, as discussed in Section 6.2.6, there may be opportunities for use of desalinated ocean water as a potential water supply source in the future, if needed, through coordination with other agencies that have ocean desalination programs. 2025 Urban Water Management Plan

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DEPARTMENT OF WATER RESOURCES’ REVIEW PROCESS
Section 10.5 discusses the process for a water supplier to submit the completed 2025 Plan to DWR, including electronic submittal through DWR’s online Water Use Efficiency Data (WUEdata) portal. DWR will subsequently review the 2025 Plans to ensure that they address the California Water Code requirements. Following DWR’s review, water suppliers will be notified of the results of the review via a formal review letter. These review letters will also be available to the public on DWR’s WUEdata portal. In cases where DWR finds that a Plan does not properly address item(s) in the Water Code, DWR will reach out to the water supplier to discuss needed corrections and correction procedures.

URBAN WATER MANAGEMENT PLANS AND GRANT OR LOAN ELIGIBILITY CWC 10608.56.
(a) On and after July 1, 2016, an urban retail water supplier is not eligible for a water grant or loan awarded or administered by the state unless the supplier complies with this part. (c) Notwithstanding subdivision (a), the department shall determine that an urban retail water supplier is eligible for a water grant or loan even though the supplier has not met the per capita reductions required pursuant to Section 10608.24, if the urban retail water supplier has submitted to the department for approval a schedule, financing plan, and budget, to be included in the grant or loan agreement, for achieving the per capita reductions. The supplier may request grant or loan funds to achieve the per capita reductions to the extent the request is consistent with the eligibility requirements applicable to the water funds. (e) Notwithstanding subdivision (a), the department shall determine that an urban retail water supplier is eligible for a water grant or loan even though the supplier has not met the per capita reductions required pursuant to Section 10608.24, if the urban retail water supplier has submitted to the department for approval documentation demonstrating that its entire service area qualifies as a disadvantaged community.
(f) The department shall not deny eligibility to an urban retail water supplier or agricultural water supplier in compliance with the requirements of this part and Part 2.8 (commencing with Section 10800), that is participating in a multiagency water project, or an integrated regional water management plan, developed pursuant to Section 75026 of the Public Resources Code, solely 2025 Urban Water Management Plan

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on the basis that one or more of the agencies participating in the project or plan is not implementing all of the requirements of this part or Part 2.8 (commencing with Section 10800).

CWC 10656.

An urban water supplier is not eligible for a water grant or loan awarded or administered by the state unless the urban water supplier complies with this part.

California Code of Regulations Title 23 Division 2 Chapter 5.1 Article 1, Section 596.1 (b)(2) “disadvantaged community” means a community with a median household income that is less than 80 percent of the statewide annual median household income.

Pursuant to DWR’s Final 2025 UWMP Guidebook:
“For a Supplier to be eligible for any water grant or loan administered by DWR, the Supplier must have a current UWMP on file that has been determined by DWR to address the requirements of the Water Code. A current UWMP must also be maintained by the Supplier throughout the term of any grant or loan administered by DWR. A UWMP may also be required to be eligible for other State funding, depending on the conditions that are specified in the funding guidelines. Suppliers are encouraged to seek guidance on the specifics of any State funding source from the respective funding agencies.”
The City’s 2025 UWMP has been prepared to meet eligibility requirements for grants and loans administered by the State and/or DWR.

TIPS FOR UWMP PREPARERS
The City’s 2025 Plan (which includes the City’s 2025 Water Shortage Contingency Plan (WSCP)) is considered an update to the City’s 2020 UWMP. However, the 2025 Plan and the WSCP are considered stand-alone documents. As discussed in Section 1.3, the 2025 Urban Water Management Plan

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City’s 2025 Plan was prepared consistent with the recommended organization provided in DWR’s Final 2025 UWMP Guidebook. The City’s 2025 Plan was also prepared based on the tips provided in DWR’s Final 2025 UWMP Guidebook including the use of information from previous Plans and following the required Plan notification and adoption process.

In addition, a checklist of specific UWMP requirements is included in Appendix B. The checklist includes the page number where the required elements are addressed to assist in DWR’s review of the submitted Plan.
2025 Urban Water Management Plan

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CHAPTER 2

URBAN WATER MANAGEMENT PLAN PREPARATION
LAY DESCRIPTION – CHAPTER 2

PLAN PREPARATION
Chapter 2 (Plan Preparation) of the City’s 2025 Plan discusses and provides the following:
 The basis for preparing an Urban Water Management Plan is provided. The City is required to prepare the 2025 Plan because it is an “urban water supplier” (the City serves more than 3,000 customers for municipal purposes)  The City is a “Public Water System” and is regulated by the State Water Resources Control Board - Division of Drinking Water. The City’s Public Water System number is provided in Table 2-1.
 The City’s Plan has been prepared as an “individual” plan rather than a “regional” plan in an effort to provide information specific to the City to best inform its employees, management and customers.
 Information presented in the City’s 2025 Plan is provided on “fiscal year” basis which is from July 1 through June 30 of the following year.  Water quantities presented in the City’s 2025 Plan are provided on an “acre-foot” basis.
 The City’s coordination and outreach efforts with wholesale water agencies, other retail water agencies, and the community are described. The City coordinated the preparation of its 2025 Plan with the Main Basin Watermaster, Raymond Basin Management Board, and SGVMWD, and the Cities of Arcadia, Pasadena, and Monrovia.
2025 Urban Water Management Plan

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 The City’s notification process to the cities and county within which the City provides water supplies to is discussed.

As discussed in Section 1.3, the City’s 2025 Plan was prepared consistent with the recommended organization provided in DWR’s Final 2025 UWMP Guidebook.

Pursuant to CWC requirements, the City’s 2025 Plan incorporates DWR’s water use and supply tables (standardized Submittal Tables ) for the reporting and submittal of UWMP data.

BASIS FOR PREPARING A PLAN
CWC 10617.
"Urban water supplier" means a supplier, either publicly or privately owned, providing water for municipal purposes either directly or indirectly to more than 3,000 customers or supplying more than 3,000 acre-feet of water annually. An urban water supplier includes a supplier or contractor for water, regardless of the basis of right, which distributes or sells for ultimate resale to customers.

This part applies only to water supplied from public water systems subject to Chapter 4 (commencing with Section 116275) of Part 12 of Division 104 of the Health and Safety Code.

CWC 10618.12.
(t) “Urban retail water supplier” means a water supplier, either publicly or privately owned, that directly provides potable municipal water to more than 3,000 end users or that supplies more than 3,000 acre-feet of potable water annually at retail for municipal purposes. (w) “Urban wholesale water supplier” means a water supplier, either publicly or privately owned, that provides more than 3,000 acre- feet of water annually at wholesale for potable municipal purposes.

CWC 10620.
(b) Every person that becomes an urban water supplier shall adopt an urban water management plan within one year after it has become an urban water supplier.

CWC 10621.
(a) Each urban water supplier shall update its plan at least once every five years on or before July 1, in years ending in six and one, incorporating updated and new information from the five years preceding each update.
2025 Urban Water Management Plan

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The City’s 2025 Plan was prepared in accordance with the UWMP Act which was established in 1983. The UWMP Act requires every “urban water supplier” to prepare and adopt a Plan, to periodically review its Plan at least once every five years and make any amendments or changes which are indicated by the review. An “Urban Water Supplier” is defined as a supplier, either publicly or privately owned, providing water for municipal purposes either directly or indirectly to more than 3,000 customers or supplying more than 3,000 acre-feet (AF) of water annually.

Section 10621(a) of the CWC states, “Each urban water supplier shall update its plan at least once every five years on or before July 1, in years ending in six and one, incorporating updated and new information from the five years preceding each update”.

As a result, DWR requires the 2025 Plans be submitted by July 1, 2026.

The City is an “urban water supplier” pursuant to Section 10617 of the CWC and directly serves potable water to more than 3,000 customers for municipal purposes. The City’s 2025 Plan is an update to the City’s 2020 Plan.

SUPPLIERS WITH BOTH WHOLESALE AND RETAIL SALES
The City is a retail water supplier (and not a wholesale water supplier). The City’s 2025 Plan was prepared based on the CWC requirements pertaining to retail water suppliers.

The City relies on water supplies from wholesale water suppliers which are discussed in Section 2.4.1.

2025 Urban Water Management Plan

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PUBLIC WATER SYSTEMS
California Health and Safety Code 116275.
(h) "Public water system" means a system for the provision of water for human consumption through pipes or other constructed conveyances that has 15 or more service connections or regularly serves at least 25 individuals daily at least 60 days out of the year.

Pursuant to CWC requirements, the City’s 2025 Plan incorporates DWR’s standardized Submittal Tables for the reporting and submittal of UWMP data. The Submittal Tables are provided within the body of the 2025 Plan text as well as in Appendix A. The City also submitted the UWMP data (from the Submittal Tables) electronically through DWR’s Online Submittal Tool.

In addition, the City is a Public Water System and is regulated by the State Water Resources Control Board - Division of Drinking Water (SWRCB-DDW). The SWRCBDDW requires water agencies to provide the number of connections, water usage, and other information annually. The information provided to SWRCB-DDW indicates the City serves potable water to more than 3,000 customers. Table 2-1 provides the City’s Public Water System name and number. As indicated in Table 2-1, the City serves only a single Public Water System.

INDIVIDUAL OR REGIONAL PLANS
The City has developed its 2025 Plan reporting solely on its service area to address all requirements of the California Water Code. The City’s 2025 Plan was not developed as a Regional Plan.

As shown in Table 2-2, the City’s 2025 Plan is an “Individual UWMP”. The City has developed its 2025 Plan reporting solely on its service area to address all requirements 2025 Urban Water Management Plan

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of the California Water Code, including water use targets and baselines pursuant to SB X7-7 Water Conservation Act of 2009 reporting (discussed further in Chapter 5). The City notified and coordinated with appropriate regional agencies and constituents (See Section 2.4).

REGIONAL REPORTING
CWC 10620.
(d)(1) An urban water supplier may satisfy the requirements of this part by participation in area wide, regional, watershed, or basin wide urban water management planning where those plans will reduce preparation costs and contribute to the achievement of conservation and efficient water use.

As indicated in Table 2-2, the City’s 2025 Plan was developed as an “Individual UWMP” and not part of a Regional Plan or a Regional Alliance.

FISCAL OR CALENDAR YEAR AND UNITS OF MEASURE
CWC 10608.20.
(a)(1) Urban retail water suppliers…may determine the targets on a fiscal or calendar year basis.

FISCAL OR CALENDAR YEAR
The data provided in the City’s 2025 Plan is reported on a fiscal year basis, unless noted otherwise, as shown in Table 2-3. A fiscal year begins on July 1st of every year. 2025 Urban Water Management Plan

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The data provided in the City’s 2025 Plan is provided on a fiscal year basis through June 30, 2020.

UNITS OF MEASURE
As shown in Table 2-3, the data provided in the City’s 2025 Plan is reported in units of AF, unless noted otherwise.

COORDINATION AND OUTREACH
CWC 10631.
(h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five-year increments to 20 years or as far as data is available. The wholesale agency shall provide information to the urban water supplier for inclusion in the urban water supplier’s plan that identifies and quantifies, to the extent practicable, the existing and planned sources of water as required by subdivision (b), available from the wholesale agency to the urban water supplier over the same five-year increments, and during various water-year types in accordance with subdivision (f). An urban water supplier may rely upon water supply information provided by the wholesale agency in fulfilling the plan informational requirements of subdivisions (b) and (f).

WHOLESALE AND RETAIL COORDINATION
The City is a sub-agency of SGVMWD, a wholesale agency. As indicated in Table 2-4, the City has provided its 2025 Plan to SGVMWD which includes water use projections in five-year increments for normal, single dry, and five consecutive year drought conditions over the next 25 years.

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COORDINATION WITH OTHER AGENCIES AND THE

COMMUNITY
CWC 10620.
(d)(3) Each urban water supplier shall coordinate the preparation of its plan with other appropriate agencies in the area, including other water suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable.

CWC 10642.

Each urban water supplier shall encourage the active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of both the plan…
The City of Sierra Madre is a retail water supplier that serves customers in the City of Sierra Madre. The City is required to coordinate the preparation of the Plan with appropriate agencies in the area, including appropriate water suppliers that share a common source. Therefore, the City coordinated the preparation of its 2025 UWMP with the Main Basin Watermaster, Raymond Basin Management Board, and SGVMWD, and the Cities of Arcadia, Pasadena, and Monrovia. As discussed in Section 10.2, the City notified these agencies, as well as the cities and county within which the City provides water supplies, at least sixty (60) days prior to the public hearing of the preparation of the 2025 Plan and invited them to participate in the development of the 2025 Plan. A copy of the notification letters sent to these agencies is provided in Appendix D.

NOTICE TO CITIES AND COUNTIES
CWC 10621.
(b) Every urban water supplier required to prepare a plan pursuant to this part shall, at least 60 days before the public hearing on the plan required by Section 10642, notify any city or county within which the supplier provides water supplies that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan. 2025 Urban Water Management Plan

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As discussed in Section 10.2, notification was provided to the cities and county within which the City provides water supplies that the City was reviewing and considering amendments (updates) to the previous 2020 Plan, and as a result prepare the 2025 Plan.

Notification was provided at least 60 days prior to the public hearing (see Appendix D).

SUBMITTAL TABLES
The applicable standardized Submittal Tables referenced within Chapter 2 are provided below.

SUBMITTAL TABLE 2-1: PWSs
Table 2-1 Public Water Systems
CA1910148 City of Sierra Madre 3,656 2,461
Total 3,656 2,461
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
Submittal Table 2-1 Retail: Public Water Systems
Add additional rows as needed
NOTES:

Volume of Water
Supplied 2025 (AF)
DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
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SUBMITTAL TABLE 2-2: PLAN TYPE IDENTIFICATION
Table 2-2 Plan Type Identification
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SUBMITTAL TABLE 2-3: SUPPLIER INFORMATION
Table 2-3 Supplier Information

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SUBMITTAL TABLE 2-4: WATER SUPPLIER INFORMATION

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

Wholesale Water Supplier Name
Add additional rows as needed
San Gabriel Valley Municipal Water District
NOTES:
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CHAPTER 3

SERVICE AREA DESCRIPTION
LAY DESCRIPTION – CHAPTER 3

SERVICE AREA DESCRIPTION
Chapter 3 (Service Area Description) of the City’s 2025 Plan discusses and provides the following:
 A description of the City’s service area is provided. The City of Sierra Madre was officially incorporated on February 2, 1907. The City is located in the foothills of the San Gabriel Valley. The City is bounded by the City of Pasadena to the west, the City of Arcadia to the east and south, and the Angeles National Forest to the north.
 The City’s water service area encompasses an area of approximately 2.9 square miles. The location of the City’s water service area is provided in Figure 1.  A description regarding the City’s water service area climate is provided. The monthly historical average temperatures (including minimum and maximum), monthly historical average rainfall, and monthly evapotranspiration (ETo) in the vicinity of the City’s service area is summarized. The sources of the climate information are also discussed.
 The population within the City’s water service area is discussed and projected. The sources of the population information are also discussed. The City provides water service to an area with a current population of 10,878. The City is projected to have a population of 11,073 by Fiscal Year 2049-50.
 A discussion of land use information used by the City to develop the 2025 Plan is provided. The City reviewed the current and projected land uses within its service area. The City also reviewed data provided by the Southern California Association 2025 Urban Water Management Plan

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of Governments, the Department of Finance, and the United States Census Bureau and prepared for counties, cities, and unincorporated areas within Southern California.

GENERAL DESCRIPTION
CWC 10631.
(a) Describe the service area of the supplier, including current and projected population, climate, and other social, economic, and demographic factors affecting the supplier’s water management planning. The projected population estimates shall be based upon data from the state, regional, or local service agency population projections within the service area of the urban water supplier and shall be in five-year increments to 20 years or as far as data is available. The description shall include the current and projected land uses within the existing or anticipated service area affecting the supplier’s water management planning. Urban water suppliers shall coordinate with local or regional land use authorities to determine the most appropriate land use information, including, where appropriate, land use information obtained from local or regional land use authorities, as developed pursuant to Article 5 (commencing with Section 65300) of Chapter 3 of Division 1 of Title 7 of the Government Code.

The City of Sierra Madre was officially incorporated on February 2, 1907 and is located in the foothills of the San Gabriel Valley. The City is bounded by the City of Pasadena to the west, the City of Arcadia to the east and south, and the Angeles National Forest to the north. The City’s water service area encompasses an area of approximately 2.9 square miles.

The City delivers its water supply through approximately 46 miles of water mains. The City produces groundwater from four production wells (Wells No. 3, No. 4, No. 5, and No. 6) with a total capacity of approximately 4,600 AFY, as well as from local treated groundwater water from the West Tunnel located in the Little Santa Anita Canyon. For most of its time, the City’s main source of supply was through its four wells. However, beginning October 2013, well production was reduced by 95 percent due to low groundwater levels of the Raymond Basin. The Metropolitan Water District of Southern 2025 Urban Water Management Plan

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California (MWD) entered into an agreement with the City and SGVMWD to deliver treated, imported water. Pursuant to the agreement, SGVMWD provides a portion of its annual State Water Project (SWP) allocation which MWD then wheels to the City. A new imported water connection was constructed to provide treated imported water to the City’s distribution system. In October 2015, after multiple years of insufficient groundwater replenishment, the Raymond Basin Management Board limited the amount of groundwater which the City is allowed to produce each year. The Raymond Management Board also authorized the use of imported water for spreading into the Raymond Basin on behalf of the City to allow additional groundwater production by the City in an amount equal to the imported water spread. Subsequently, the City began delivering treated imported replenishment water at the Sierra Madre Spreading Grounds for the purposes of spreading the imported water to allow additional groundwater production by the City.

The City can also use tunnel water to supplement its water supply.

SERVICE AREA BOUNDARY MAPS
As discussed in Section 3.1, the City’s service area covers approximately 2.9 square miles encompassing the majority of the City Sierra Madre. A service area boundary map is provided on Figure 1. The City’s water service area boundary relative to the vicinity of municipal boundaries is provided in Figure 2.

The City’s service area boundary was originally created in a Geographical Information Systems (GIS) shape file format and converted into a KML format. To the extent information was available, metadata was included in the KML file (including map projection, contact information, start and end dates for which the map is valid, constraints, attribute table definitions, and digitizing base).
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SERVICE AREA CLIMATE
CWC 10631.
(a) Describe the service area of the supplier, including … “climate…” CWC 10630.

It is the intention of the Legislature, in enacting this part, to permit levels of water management planning commensurate with the numbers of customers served and the volume of water supplied, while accounting for impacts from climate change.

The monthly historical average temperatures (including minimum and maximum), monthly historical average rainfall, and monthly evapotranspiration in the vicinity of the City’s service area is summarized in the tabulation below. Historical climate information was obtained from the Western Regional Climate Center (WRCC), Los Angeles County Department of Public Works (DPW), and from DWR’s California Irrigation Management Information System (CIMIS).

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Service Area Climate Information

Month
Average
Temperature
Average Min.

Temperature
Average Max.

Temperature
Average Total
Precipitation ETo
(F) (F) (F) (Inches) (Inches)

January 54.9 43.1 66.7 4.3 2.15
February 56.4 44.5 68.2 4.5 2.54
March 58.3 46.4 70.3 3.4 3.85
April 61.6 49.3 73.9 1.3 4.61
May 64.6 52.7 76.5 0.5 5.21
June 69.2 56.3 82.2 0.1 6.00
July 74.6 60.5 88.7 0.0 6.58
August 75.3 60.9 89.6 0.1 6.38
September 73.4 59.2 87.6 0.4 4.95
October 67.6 54.0 81.2 0.7 3.55
November 60.9 47.7 74.1 1.6 2.48
December 55.4 43.6 67.3 3.2 1.90

Annual 64.4 51.5 77.3 19.9 50.22

Source:

Historical average monthly precipitation and temperature information was obtained from the Western Regional Climate Center (http://www.wrcc.dri.edu/) and is based on data collected from Station 046719 (Pasadena, CA) from 1893 through 2015. Historical monthly average ETo information was obtained from the California Irrigation Management Information Systems (http://wwwcimis.water.ca.gov) and is based on data collected from Station 159 (Monrovia).

The historical average rainfall in the vicinity of the City’s service area is 19.9 inches. The City’s service area in the San Gabriel Valley has a dry climate and summers can reach average maximum daily temperatures in the high 80s. Although changes in climatic conditions may have an impact (as discussed in Section 4.5), the projected water supply demands will be based on average year, single dry year and a five consecutive year drought, based on historical data and projected demands. Precipitation within the vicinity of the City’s service area is discussed further in Section 7.2. 2025 Urban Water Management Plan

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A discussion of the City’s sources of supply, how those sources may be impacted by climate change, and the proactive actions the City and other local/regional water managers may take to address the potential climate change on water supplies is provided in Section 4.2.5.6.

SERVICE AREA POPULATION AND DEMOGRAPHICS

SERVICE AREA POPULATION
CWC 10631.
(a) Describe the service area of the supplier, including current and projected population… The projected population estimates shall be based upon data from the state, regional, or local service agency population projections within the service area of the urban water supplier and shall be in five-year increments to 20 years or as far as data is available.

The City provides water service to an area with a current population of approximately 10,878. Table 3-1 presents the current and projected population of the area encompassed by the City’s service area from FY 2024-25 to FY 2049-50. The City is projected to have a population of approximately 11,073 by FY 2049-50.

A GIS analysis using census tracts was performed to estimate the current population (FY 2024-25) within the City’s service area. The City’s service area is comprised of individual census tracts which represent smaller statistical areas for which population data is available. The smaller census tracts were combined to more accurately represent the total area within the City’s service area.

Current census tract information was obtained in a GIS format from the advanced demographics dataset developed by Esri which includes source material supplied by the U.S. Census Bureau and the U.S. Census Bureau's American Community Survey.

The City’s service area boundary in a GIS format was overlayed on the census tract GIS 2025 Urban Water Management Plan

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layer. Each census tract located within the City’s service area was identified (including the entire census tract or a portion of). For a census tract located entirely within the service area, the entire population (i.e. 100 percent) associated with the census tract was incorporated. For a census tract located partially within the service area, the portion (or percentage) of the census tract located geographically within the service area was determined through GIS. The percentage was then applied to the census tract’s population in order to estimate the population of the census tract within the service area.

The total population within the City’s service area was then estimated based on the sum of the populations within these census tracts.

The projected total population within the City’s service area was based on growth rate projections included in the Southern California Association of Governments (SCAG) “Connect SoCal 2024, Demographics and Growth Forecast” report dated April 2024. The SCAG report incorporates demographic trends, existing land use, general plan land use policies, and input and projections through the year 2050 from the Department of Finance (DOF) and the U.S. Census Bureau for counties, cities and unincorporated areas within Southern California. Annual growth rate projections within the City’s service area were estimated based on the SCAG report and applied to the City’s current population to estimate projected populations through 2050.

The City’s service area is almost built out with predominantly single and multi-family residential units and some commercial, institutional, and industrial establishments.

Moving forward, the City will continue planning for the Regional Housing Needs Assessment (RHNA) allocations and future planned developments including the addition of apartment units and accessory dwelling units (ADUs) as the means of affordable housing.

Pursuant to the California State Housing Law, every jurisdiction (including the City of Sierra Madre) is required to plan for its RHNA allocation in the Housing Element of its General Plan. RHNA is a representation of future housing needs for all income levels in 2025 Urban Water Management Plan

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a jurisdiction. SCAG’s “6th Cycle Final RHNA Allocation” was adopted March 2021 (and modified in July 2021) and covers the planning period from October 2021 through October 2029. The total RHNA allocation of housing within the City of Sierra Madre through 2029 is 204 units (including 79 “very-low” income units, 39 “low” income units, 35 “moderate” income units, and 51 “above moderate” income units). The City of Sierra Madre must identify adequate sites and establish policies and programs that will accommodate the estimated growth, however the City of Sierra Madre is not obligated to produce, construct, or develop these allocated units.

OTHER SOCIAL, ECONOMIC, AND DEMOGRAPHIC FACTORS
CWC 10631.
(a) Describe the service area of the supplier, including… other social, economic, and demographic factors affecting the supplier’s water management planning.

No other demographic factors affect the City’s water management planning. However, increased population will have an impact on water demand.

LAND USES WITHIN THE SERVICE AREA
CWC 10631.
(a) ...The description shall include the current and projected land uses within the existing or anticipated service area affecting the supplier’s water management planning. Urban water suppliers shall coordinate with local or regional land use authorities to determine the most appropriate land use information, including, where appropriate, land use information obtained from local or regional land use authorities…
The City reviewed the current and projected land uses within its service area during the preparation of this 2025 Plan. Information regarding current and projected land uses is 2025 Urban Water Management Plan

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included in the City of Sierra Madre’s General Plan. The existing land uses within the City’s service area include residential (single-family and multi-family), commercial, institutional, landscape, and open space. The projected land uses within the City’s service area are expected to remain similar to the existing land uses. In addition, although mostly built-out, the projected population within the City’s service area is anticipated to increase (as discussed in Section 3.4). A discussion of the existing and projected water uses for the individual water use sectors within the City’s service area, which includes the different land uses, is provided in Section 4.2. As discussed in Section 2.4, the City coordinated the preparation of the 2025 Plan with the City of Pasadena, the City of Monrovia, the City of Arcadia, the County of Los Angeles, the Main Basin Watermaster, Raymond Basin Management Board, and SGVMWD.

As discussed in Section 3.4, the City obtained data from the Southern California Association of Governments document entitled “Connect SoCal 2024, Demographics and Growth Forecast”, dated April 2024. Projected populations in the City’s service area were based on growth rate projections developed by SCAG. The data provided by SCAG incorporates demographic trends, existing land use, general plan land use policies, and input and projections through the year 2050 from the Department of Finance and the U.S.

Census Bureau for counties, cities and unincorporated areas within Southern California.

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SUBMITTAL TABLES
The applicable standardized Submittal Table referenced within Chapter 3 is provided below.

SUBMITTAL TABLE 3-1: POPULATION - CURRENT AND

PROJECTED
Table 3-1 Population - Current and Projected
2025 2030 2035 2040 2045 2050(opt)
10,878 10,900 10,922 10,972 11,022 11,073
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
NOTES:
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CHAPTER 4

WATER USE CHARACTERIZATION
LAY DESCRIPTION – CHAPTER 4

WATER USE CHARACTERIZATION
Chapter 4 (Water Use Characterization) of the City’s 2025 Plan discusses and provides the following:
 The City provides water service to individual “water use sectors”. These water use sectors include single-family residential, multi-family, commercial, and institutional (and governmental), and landscape. Individual descriptions for these water use sectors are provided in Section 4.2.1.
 The City’s total water demands (including potable water) over the past 15 years have ranged from 1,982 AFY to 2,841AFY, with an average of 2,357 AFY. The City currently measures its water use through meter data and billing records.  The City conducts an annual water loss audit to identify distribution system water losses. Water losses can result from pipeline leaks and inaccurate metering due to faulty meters. Water loss estimates are incorporated into the City’s projected water demands.
 The City’s current and projected water demands are provided in five-year increments over the next 25 years are provided (through Fiscal Year 2049-50) as shown on Table 4-3.
 The City’s water demand projections incorporate passive savings from water savings which are the result of implementation of codes, water conservation standards, and/or ordinances.
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 The projected water demands for lower income households are identified and are included in the City’s total projected water demands.
 The City’s sources of water supply and how those sources may be impacted by climate change are discussed. The proactive actions the City and other local/regional water managers may take to address the potential climate change impacts on water supplies are also discussed.

NON-POTABLE VERSUS POTABLE WATER USE
The Water Code requires a description and quantification of water uses within the City’s service area, including both non-potable and potable water. Recycled water (non-potable) uses are addressed in Section 6.2.5; however, a summary is provided in Table 4-1 and 4-2. Furthermore, Chapter 4 addresses the City’s potable water demands.

PAST, CURRENT, AND PROJECTED WATER USE BY SECTOR
CWC 10635.
(a) Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five-year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years. The water service reliability assessment shall be based upon the information compiled pursuant to Section 10631, including available data from state, regional, or local agency population projections within the service area of the urban water supplier.

CWC 10631.
(d)(1) For an urban retail water supplier, quantify, to the extent records are available, past and current water use, over the same five-year increments described in subdivision (a), and projected water use, based upon information developed pursuant to subdivision (a), identifying the uses among water use sectors, including, but not necessarily limited to, all of the following…
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(2) The water use projections shall be in the same five-year increments described in subdivision (a).
(4)(A) Water use projections, where available, shall display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans identified by the urban water supplier, as applicable to the service area. (4)(B) To the extent that an urban water supplier reports the information described in subparagraph (A), an urban water supplier shall do both of the following:
(i) Provide citations of the various codes, standards, ordinances, or transportation and land use plans utilized in making the projections.
(ii) Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.

The City’s current and projected water demands are provided in five-year increments over the next 25 years (through FY 2049-50) in Tables 4-1 and 4-2. The City’s total water demands were projected based on a review of the “2020 Water Use Target” pursuant to SB X7-7 calculations (discussed in Section 5.2), current water use factors based on recent water demands, Urban Water Use Objective standards (discussed in Section

5.2.6), and the total population projections based on land use trends within the City (discussed in Section 3.4).

The City provides water service to individual “water use sectors” as identified by the California Water Code. The water use sectors supplied by the City are discussed in Section 4.2.1. The water use for each of these sectors during FY 2024-25 is provided in Table 4-1. The projected water use for each individual water use sector through FY 2049- 50 is provided in Table 4-2 and is based on the percentage breakdown of water use from each individual water use sector in FY 2024-25 (the percentages were then applied to the projected total water use).

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WATER-USE SECTORS LISTED IN WATER CODE
CWC 10631.
(d)(1) For an urban retail water supplier, quantify, to the extent records are available, past and current water use, over the same five-year increments described in subdivision (a), and projected water use, based upon information developed pursuant to subdivision (a), identifying the uses among water use sectors, including, but not necessarily limited to, all of the following:
(A) Single-family residential.
(B) Multifamily.
(C) Commercial.
(D) Industrial.
(E) Institutional and governmental.
(F) Landscape.
(G) Sales to other agencies.
(H) Saline water intrusion barriers, groundwater recharge, or conjunctive use, or any combination thereof.
(I) Agricultural.
(J) Distribution system water loss.

As shown in Table 4-1, the City’s service area includes the following water use sectors listed in the California Water Code:
 Single-family residential
(A single-family dwelling unit is a lot with a free-standing building containing one dwelling unit that may include a detached secondary dwelling. Single-family residential water demands are included in retail demands.)  Multi-family
(Multiple dwelling units are contained within one building or several buildings within one complex. Multi-family residential water demands are included in retail demands.)
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 Commercial
(Commercial users are defined as water users that provide or distribute a product or service)
 Institutional (and governmental)
(Institutional users are defined as water user dedicated to public service.

Institutional users include, among other users, higher education institutions, schools, courts, churches, hospitals, government facilities, and nonprofit research institutions. Institutional water demands are included in retail demands.)  Landscape
(Landscape connections supply water solely for landscape irrigation. Landscapes users may be associated with multi-family, commercial, industrial, or institutional/governmental sites, but are considered a separate water use sector if the connection is solely for landscape irrigation. Landscape water demands are included in retail demands.)
 Distribution system losses
(Distribution system losses represent the potable water losses from the pressurized water distribution system and water storage facilities, up to the point of delivery to the customers. Additional information is discussed in Section 4.3).

OPTIONAL WATER-USE SECTORS IN ADDITION TO THOSE

LISTED IN WATER CODE
The City’s service area does not include other water demand sectors which are not listed in the California Water Code (including exchanges, transfers, wetlands or wildlife habitat, and surface water storage).
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PAST WATER USE
Chapter 6 provides a discussion of the sources of water supply the City uses to meet its water demands. Section 6.1 provides a tabulation of the City’s historical annual water demands for each water supply source. Over the past 15 years, the City’s total water demands have ranged from 1,982 AFY to 2,841 AFY, with an average of 2,357 AFY. In addition, the City previously experienced a five consecutive year drought within its service area from FY 2011-12 to FY 2015-16. The City also reviewed its historical water demands to determine the projected water demands and water supply reliability (discussed in Chapter 7). The City is able to provide sufficient water supplies to meet the projected water demands of its customers, including during a five consecutive year drought period.

CURRENT WATER USE
CWC 10631.
(d)(1) For an urban retail water supplier, quantify, to the extent records are available, past… water use… based upon information developed pursuant to subdivision (a), identifying the uses among water use sectors…
The City currently measures its water use through meter data and billing records. The water use for the City’s individual water use sectors during FY 2024-25 are provided in Table 4-1. Recycled water uses are addressed separately in Section 6.5; however, a summary of projected recycled water uses is provided in Table 4-2.

DWR has created an optional “Planning Tool Worksheet” for water suppliers to review and assess monthly water use trends. DWR has deemed the tool as optional and the City is not required by DWR to use the tool. Section 6.1 provides a tabulation of the City’s historical annual water uses for each water supply source. During the past 15 years, the City experienced a five consecutive year drought within its service area from FY 2011-12 2025 Urban Water Management Plan

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to FY 2015-16. Historical records indicate the City’s annual water demands had been greater prior to FY 2011-12. The City has been able to provide sufficient water supplies to its customers, including during long-term droughts and years with historically high water demands. In addition, the City has been able to provide water service to meet maximum day water demands for these years, including during the summer months. A further discussion regarding the reliability of the City’s water supply sources is provided in Chapter 7.

PROJECTED WATER USE

4.2.5.1 GENERAL GUIDANCE ON PROJECTIONS
CWC 10631.
(d)(1) For an urban retail water supplier, quantify, to the extent records are available, … projected water use, based upon information developed pursuant to subdivision (a), identifying the uses among water use sectors…
CWC 10633.

The plan shall provide, to the extent available, information on recycled water...and shall include all of the following:...
(e) The projected use of recycled water within the supplier’s service area at the end of 5, 10, 15, and 20 years, and a description of the actual use of recycled water in comparison to uses previously projected pursuant to this subdivision...

CWC 10635.
(a) Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five-year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years. The water service reliability assessment shall be based upon the information compiled pursuant to Section 10631, including available data from state, regional, or local agency population projections within the service area of the urban water supplier.

CWC 10631.
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(h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five-year increments to 20 years or as far as data is available… As discussed above, the City’s current and projected water demands are provided in fiveyear increments over the next 25 years (through FY 2049-50) in Tables 4-1 and 4-2. The City’s total water demands were projected based on a review of the “2020 Water Use Target” pursuant to SB X7-7 calculations (discussed in Section 5.2), current water use factors based on recent water demands, Urban Water Use Objective state standards (discussed in Section 5.2.6), and the total population projections based on land use trends within the City (discussed in Section 3.4). Chapter 6 provides a discussion of the sources of water supply the City will use to meet the projected water demands (including recycled water use). The City’s projected water demands and water supplies during a normal year, a single dry year, and a five consecutive year drought are provided in Chapter 7.

Because the City relies on wholesale water supplies, the City has provided its 2025 Plan to San Gabriel Valley Municipal Water District as discussed in Section 2.4.1.

4.2.5.2 WATER-USE PROJECTIONS BY SECTOR
CWC 10631.
(d)(1) For an urban retail water supplier, quantify, to the extent records are available … projected water use based upon information developed pursuant to subdivision (a), The City provides water service to individual “water use sectors” as identified by the California Water Code. The water use sectors supplied by the City are discussed in Section 4.2.1. The water use for each of these sectors during FY 2024-25 is provided in Table 4-1. The projected water use for each individual water use sector through FY 2049- 2025 Urban Water Management Plan

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50 is provided in Table 4-2 and is based on the percentage breakdown of water use from each individual water use sector in FY 2024-25 (the percentages were then applied to the projected total water use).

4.2.5.3 STANDARDS, CODES, ORDINANCES, AND PLANS
CWC 10631.
(d)(4)(A) Water use projections, where available, shall display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans identified by the urban water supplier, as applicable to the service area. (d)(4)(B) To the extent that an urban water supplier reports the information described in subparagraph (A), an urban water supplier shall do both of the following:
(i) Provide citations of the various codes, standards, ordinances, or transportation and land use plans utilized in making the projections.
(ii) Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.

The City’s projected water demands are provided in five-year increments over the next 25 years (through FY 2049-50) in Table 4-2. The City’s projected water demands and water supplies during a normal year, a single dry year, and a five consecutive year drought are provided in Chapter 7. The projected water demands for each of the City’s water use sectors are provided in Table 4-2. As discussed in the following Section, the City’s water demand projections incorporate “passive savings” which are the result of implementation of codes, standards, and/or ordinances.

4.2.5.4 RETAIL ONLY
The City’s total water demands were projected based on a review of the “2020 Water Use Target” pursuant to SB X7-7 calculations (discussed in Section 5.2), current water use 2025 Urban Water Management Plan

City of Sierra Madre Page 4-10
factors based on recent water demands, Urban Water Use Objective standards (discussed in Section 5.2.6), and the total population projections based on land use trends within the City (discussed in Section 3.4). The projected water demands for the water use sectors were based on the percentage breakdown of water demands from each individual water use sector in FY 2024-25 (the percentages were then applied to the projected total water demands). A discussion of the City’s water supplies from SGVMWD, a wholesaler, are discussed in Section 6.2. As discussed in Section 2.4.1, the City has coordinated its water demand projections with SGVMWD for each water use sector.

The City’s water demand projections incorporate water savings, or “passive savings”, which are the result of implementation of new plumbing codes along with consumer awareness of the need to conserve water. The City’s Municipal Code 13.24 “Mandatory Water Conservation Plan”, which was created through the adoption of Ordinance No. 1322 adopted in 2012 (discussed in Section 9.1.3), includes methods for current and ongoing reduction in water use and water waste. Prior to adoption of Ordinance No. 1322, the City’s water use rate ranged from approximately 224 gallons per capita day to 308 gallons per capita day (from FY 1998-99 through FY 2007-08). As identified in Section

5.2.2, the City’s actual water use rate during FY 2019-20 was 199 gallons per capita per day which is a decrease of up to 109 gallons per capita per day from the recent historical water use and includes passive savings. The City’s projected water demands, incorporate water use targets less than its established SB X7-7 water use target for 2020 and incorporate ongoing water passive savings and reduced water use. As indicated in Table 4-3, estimated future water savings have been considered as part of the City’s water use projections.
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4.2.5.5 LOWER-INCOME HOUSEHOLDS
CWC 10631.1.
(a) The water use projections required by Section 10631 shall include projected water use for single-family and multifamily residential housing needed for lower income households, as defined in Section 50079.5 of the Health and Safety Code, as identified in the housing element of any city, county, or city and county in the service area of the supplier. (b) It is the intent of the Legislature that the identification of projected water use for single-family and multifamily residential housing for lower income households will assist a supplier in complying with the requirement under Section 65589.7 of the Government Code to grant a priority for the provision of service to housing units affordable to lower income households.

California Health and Safety Code 50079.5.
(a) "Lower income households" means persons and families whose income does not exceed the qualifying limits for lower income families… In the event the federal standards are discontinued, the department shall, by regulation, establish income limits for lower income households for all geographic areas of the state at 80 percent of area median income, adjusted for family size and revised annually.

The City’s water demands projections provided in Table 4-2 include projected water demands for lower income single-family and multi-family households. A lower income household is defined as a household with an income less than 80 percent of the “area median income”, adjusted for family size. For the purpose of this evaluation, the entire Los Angeles County was used for the “area median income”. The total number of lower income households within the City’s service area was estimated based on billing records provided by the City, a review of the City of Sierra Madre’s General Plan, a review of median household income range statistics provided by the US Census Bureau (https://data.census.gov/cedsci/), and a review of GIS maps of Disadvantaged Communities2 (DACs), including block groups, tracts, and places, provided by DWR. The estimated 2 GIS information for DACs is based on data from the US Census showing census block groups, tracts, and places identified as disadvantaged communities (less than 80 percent of the State's median household income) or severely disadvantaged communities (less than 60 percent of the State's median household income)
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number of lower income households located within the City’s service area is 26.8 percent of the total number of households. As indicated in Table 4-2, the total projected residential (single family and multi-family) water demands within the City in 2050 is estimated at about 1,785 AFY. Based on a 26.8 percent use factor of total residential water demands, the projected water demand for lower income households will be about 478 AFY by FY 2049-50. The projected water demands for lower income households were included in the City’s total projected water demands, as indicated in Table 4-3.

4.2.5.6 CLIMATE CHANGE CONSIDERATIONS
CWC 10630.

CWC 10635.
(b) Every urban water supplier shall include, as part of its urban water management plan, a drought risk assessment… (and) shall include each of the following… (4) Considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.

Climate is defined as “the average course or condition of the weather at a place usually over a period of years as exhibited by temperature, wind velocity and precipitation3”. A change in the climate which produces a greater amount of precipitation (i.e. more runoff and/or snowpack) and lower temperatures is generally a benefit to water supplies.

However, drought conditions which may result in decreased precipitation, decreased runoff, and increased temperature may adversely affect an urban water supplier’s ability 3 www.merriam-webster.com
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City of Sierra Madre Page 4-13
to meet demands by potentially impacting supplies. Consequently, the focus of impacts of climate change is on these adverse consequences.

Section 6.2 of this Plan describes the City’s sources of water supply, management practices associated with those sources, and the long-term reliability of those sources.

Section 7.3 includes a Drought Risk Assessment which considers the potential impacts of climate change to the City’s water supply sources. Chapter 8 provides a detailed discussion of the City’s Water Shortage Contingency Plan, including but not limited to, the six standard water shortage levels in the event climate change results in a reduction to water supplies associated with a periodic drought condition. The following is a discussion of the City’s sources of supply, how those sources may be impacted by climate change, and the proactive actions the City and other local/regional water managers may take to address the potential climate change impacts on water supplies.

Imported Water Supplies
The City is a member of SGVMWD, which delivers untreated State Water Project water to replenish the Main Basin based on the Main San Gabriel Basin Watermaster’s management of the groundwater supplies. In addition, the City receives treated imported replenishment water supplies from SGVMWD based on an agreement with MWD.

SGVMWD has prepared a 2025 Urban Water Management Plan which includes a discussion of the reliability of its water supplies and the impacts of climate change, and is incorporated by reference in this Plan. The following is a brief summary of SGVMWD’s efforts:
 SGVMWD has prepared an Integrated Resource Plan (IRP) which identifies the individual and collective demands from its sub-agencies. Those demands are compared to average year and dry year water supplies from the SWP to develop the basis for identifying any potential gaps. SGVMWD will use the IRP with its resource management
2025 Urban Water Management Plan

City of Sierra Madre Page 4-14
 SGVMWD has identified potential recycled water projects within the service area of its sub-agencies. Subject to the availability of recycled water supplies, the subagencies may be able to develop local recycled water projects which reduce their demand for potable supplies and consequently the need to deliver SWP water.  SGVMWD works with its sub-agencies to encourage and facilitate water conservation programs, as noted below:
o SGVMWD has an annual budget to purchase water conservation materials such as low flow shower heads, water nozzles for garden hoses, residential water meters for use on showers and hoses, and educational materials for children. In addition, SGVMWD also provides rebate programs for high efficiency toilets and rain barrels.
o SGVMWD started its public information program in 2003 and has expanded it in subsequent years. SGVMWD currently has an ongoing public information program regarding water conservation. SGVMWD has held public workshops to address its Public Information/ School Education programs and has sponsored the San Gabriel Valley Water Forums held biennially which address current water supply issues in the San Gabriel Valley. In addition, SGVMWD produces a newsletter called “The Pipeline” which includes water conservation information, has prepared a video presentation on water conservation, among other activities.

Groundwater Supplies – Raymond Basin
The City relies on groundwater produced from the Raymond Basin as discussed in Section 6.2.2. The Raymond Basin (Basin Number 4-23 pursuant to DWR Bulletin 118) has been identified by DWR as a very low-priority groundwater basin partially due to the fact it is adjudicated. In that regard, the Raymond Basin is actively managed by the Raymond Basin Management Board and those management activities are described in detail in Section 6.2.2.
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Recognizing the potential impacts of climate change on the Raymond Basin groundwater supplies (decreased local runoff and replenishment, along with increased groundwater production, may lead to decreased groundwater levels), the City has used climate tools available on the California’ Energy Commission’s Cal-Adapt website (https://cal-adapt.org/) to identify potential future climate change cycles for the Raymond Basin. The Cal-Adapt website has been developed by the Geospatial Innovation Facility at the University of California, Berkeley with funding and advisory oversight by the California Energy Commission and California Strategic Growth Council.

To address the uncertainty in future greenhouse gas emissions, Cal-Adapt has developed a Representative Concentration Pathway 4.5 (RCP 4.5) scenario and a Representative Concentration Pathway 8.5 (RCP 8.5) scenario. RCP 4.5 represents a scenario in which greenhouse gas emissions peak around 2040, then decline and stabilize. RCP 8.5 represents a scenario in which emissions continue to strongly rise through 2050 and plateau around 2100. RCP 4.5 is a “medium” emissions scenario that models a future in which there is an effort made by societies to reduce greenhouse gas emissions, whereas RCP 8.5 is a “business-as-usual” scenario. For the City’s climate change analysis, the RCP 4.5 scenario was selected.

The Cal-Adapt climate tools also incorporate several General Circulation Models (GCMs), which represent physical processes in the atmosphere, ocean, and land surface. These GCMs projected future climates under conditions such as warm/dry, cooler/wetter, and average simulations. For the City’s climate change analysis, the average condition GCM (CanESM2) was selected.

The climate tools available on the Cal-Adapt website were to simulate projected annual precipitation and annual average maximum temperature in the Raymond Basin. An electronic boundary of the Raymond Basin was submitted online through the Cal-Adapt 2025 Urban Water Management Plan

City of Sierra Madre Page 4-16
website in a “KML” file format (i.e. Google Earth format) and data using several of the available climate tools was generated.

Based on the data generated by the Cal-Adapt simulations (see Appendix E), the average annual rainfall in the Raymond Basin is projected to be 26.1 inches through 2099, compared to historical average of 24.3 inches (from 1961 through 1990). In addition, the average maximum temperature is projected to be 82.7 degrees Fahrenheit compared to a historical average of 76.3 degrees Fahrenheit. Although there may be more precipitation in the future, it may be more likely to fall as rainfall compared to snowfall. The simulation does not denote the duration or intensity of the storms contributing to the annual precipitation. Notwithstanding, the San Gabriel River watershed (including the Rio Hondo, which is a distributary of the San Gabriel River) includes a complex and interconnected series of dams, reservoirs and replenishment basins to capture stormwater runoff. In an average to below average year of precipitation, over 95 percent of the precipitation in the watershed is retained within the watershed and is not lost to the ocean. Consequently, most if not all precipitation (whether it is rain or snowfall) likely will be captured and not adversely impacted by a potentially higher average annual temperature.

Recognizing these potential impacts to local hydrology resulting from climate change and the resultant impacts to the groundwater supplies, the Raymond Basin Management Board has taken (and may reinstate as needed) the following proactive actions to anticipate and circumvent the potential impacts of climate change. These actions will enable the City to rely on the Raymond Basin as a reliable source of supply.

Temporary Reduction of Allowed Production
Historical prolonged droughts have caused groundwater levels to decrease resulting in the Raymond Basin Management Board to temporarily reduce the amount of groundwater which may be produced. The decreased production is designed to promote recovery of groundwater levels. At such time the groundwater levels have recovered the program 2025 Urban Water Management Plan

City of Sierra Madre Page 4-17
may be suspended, but can be reinstated as needed in the event groundwater levels decrease in the future. Recognizing allowed pumping is limited, Raymond Basin producers have taken steps to reduce water demands to address the potential gap between supply and demand in the event demands cannot be entirely reduced. As discussed in Section 6.2.1, the City replenishes treated imported water in the Raymond Basin which it then pumps through its wells to augment its reduced water rights.

DISTRIBUTION SYSTEM WATER LOSS
CWC 10631.
(d)(3)(A) The distribution system water loss shall be quantified for each of the five years preceding the plan update, in accordance with rules adopted pursuant to Section 10608.34. (B) The distribution system water loss quantification shall be reported in accordance with a worksheet approved or developed by the department through a public process. The water loss quantification worksheet shall be based on the water system balance methodology developed by the American Water Works Association.
(C) In the plan due July 1, 2021, and in each update thereafter, data shall be included to show whether the urban retail water supplier met the distribution loss standards enacted by the board pursuant to Section 10608.34.

PREVIOUS FIVE YEARS DISTRIBUTION SYSTEM LOSSES
Distribution system water losses represent the potable water losses from the pressurized water distribution system and water storage facilities, up to the point of delivery to the customers. Sources of distribution system water loss can include: inaccurate metering due to faulty meters; water use not metered such as firefighting, flushing of the water system; and pipeline leaks.
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The California Water Code Section 10608.34 requires “On or before October 1, 2017, and on or before October 1 of each year thereafter, each urban retail water supplier shall submit a completed and validated water loss audit report for the previous calendar year or the previous fiscal year...” The water loss audits must follow American Water Works Association (AWWA) guidance and be validated by a certified water audit validator. The City has completed the annual water loss audit process through Fiscal Year 2024-25, as required by the California Water Code (i.e. the City has completed water loss audits representing FY 2020-21 through FY 2024-25). The City’s water loss audits were prepared and validated pursuant to DWR requirements. The annual water loss audit reports submitted by retail water agencies in California, including the City, are available on DWR’s website (https://wuedata.water.ca.gov/awwa_plans).

The City’s annual water loss audits identify real water losses (e.g. leaks and main failures) and apparent water losses (e.g. customer meter inaccuracies, systematic data handling errors in customer billing systems, and unauthorized consumption). The City’s distribution system water losses are based on the sum of the real and apparent water losses. Over the past five years, the City’s average distribution system water losses represent approximately 16.5 percent of its total water demands. This average water loss factor was incorporated into the City’s total potable water demand projections (Tables 4-2 and 4-3).

PROGRESS TOWARD MEETING THE WATER LOSS

PERFORMANCE STANDARD
Consistent with the California Code of Regulations, Title 23, Sections 980 through 986, retail water suppliers are required to comply with Real Water Loss Performance Standards by January 1, 2028 (pursuant to SWRCB requirements). Until then, a supplier may, when calculating its Urban Water Use Objective (discussed further in Section 5.2.6), use real losses reported in the water loss audits provided to the Department of Water Resources (discussed in Section 4.3.1), rather than the standard-based budget 2025 Urban Water Management Plan

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calculated according to the equation described Section 970 of the California Code of Regulations.

Pursuant to the California Water Code Section 10631(d)(3)(C), a retail water supplier is required to provide data in its 2025 Plan demonstrating whether the retail water supplier met its Water Loss Performance Standard. The California Code of Regulations includes the following methods for compliance:
• Retail suppliers may have met their Real Water Loss Performance Standard if their 2025 or 2026 annual water loss audits (currently not available) show actual real water loss at or below the standard (California Code of Regulations Section 981[b]). • Retail suppliers may still meet the Real Water Loss Performance Standard if, by January 1, 2028, their 2027 annual water loss audit shows actual real water loss at or below the standard (California Code of Regulations Section 981[a] and [b]). • Apparent Water Loss Performance Standards are evaluated at the time compliance with the Real Water Loss Performance Standard is assessed (California Code of Regulations Section 981[d]).

The City’s 2025 water loss audit is due by January 1, 2027 and was not available during the preparation, completion, and submittal of the City’s 2025 Plan. However, Table 4-6 presents the City’s Real Water Loss Performance Standard, as well as the real and apparent water losses included in the City’s most recent 2024 water loss audit.

The City will continue to improve data collection for assessing and reducing water losses while performing proactive measures to minimize real losses. City field personnel are trained to spot leaks and verify if water from fire hydrants is metered, permitted, or if the water is taken without authorization.
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SUBMITTAL TABLES
The applicable standardized Submittal Tables referenced within Chapter 4 are provided below.

TABLE 4-1: TOTAL USES FOR POTABLE AND NON-POTABLE

WATER-ACTUAL
Table 4-1 Total Uses for Potable and Non-Potable Water-Actual

Use Type
Drop down list
May select each use multiple times
These are the only use types that will be
recognized by the WUEdata online submittal tool
Potable or NonPotable
(OPTIONAL)
Drop down list
Volume (AF)
Single Family Potable 1,560
Multi-Family Potable 224
Commercial Includes Institutional Potable 222
Landscape Potable 49
Distribution System Water Loss Potable 406
2461
0 Total 2,461
Submittal Table 4-1 Retail: Total Uses for Potable and Non-Potable Water — Actual Water Code Section 10631(d)(1)
NOTES:

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TABLE 4-2: TOTAL USES OF POTABLE AND NON-POTABLE
WATER—PROJECTED
Table 4-2 Total Uses for Potable and Non-Potable Water - Projected

Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be
recognized by the WUEdata online submittal tool
Potable or Non-Potable
(OPTIONAL)
Drop down list
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 opt (AF)
Single Family Potable 1,596 1,598 1,606 1,612 1,620
Multi-Family Potable 229 229 230 231 232
Commercial Includes Institutional Potable 226 227 228 229 230 Landscape Potable 50 50 50 51 51
Distribution System Water Loss Potable 415 416 418 420 422 2,516 2,520 2,532 2,543 2,555
0000 0
2,516 2,520 2,532 2,543 2,555
Submittal Table 4-2 Retail: Total Uses for Potable, and Non-PotableWater — Projected Water Code Section 10631(d)(1)
Projected Water Use
(Report To the Extent that Records are Available)
Additional Description
(as needed)
NOTES:

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

Subtotal Non-Potable
Subtotal Potable
Add additional rows as needed.
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TABLE 4-3: INCLUSION IN WATER-USE PROJECTIONS
Table 4-3 Inclusion in Water-Use Projections
OPTIONAL TABLE 4-4: PASSIVE WATER SAVINGS

PROJECTION
DWR has deemed Table 4-4 to be optional.

Table 4-4 Passive Savings Projection

Are Future Water Savings Included in Projections?
Drop down list (y/n)
Yes
If "Yes" to above, state the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.

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

Section 4.2.5
and Chapter
8 Are Lower Income Residential Demands Included In Projections? Drop down list (y/n)
Yes
Optional If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found.

Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) NOTES:

DWR NOTES: Additional guidance is provided in Appendix K. 2025 Urban Water Management Plan

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TABLE 4-5: WATER LOSS AUDIT REPORTING
Table 4-5 Water Loss Audit Reporting

Public Water System ID #
Reported in Table 2-1 R Reporting Period
Submitted to DWR Water
Loss Audit Program
(yes/no)
2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
CA1910148
DWR NOTES: Suppliers will provide a link to the WUEdata submittals of their Water Loss Audit Reports.

NOTES:

Report submittal status for all five years for each Public Water System as available.

Add rows as needed
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TABLE 4-6: PROGRESS TOWARD 2028 WATER LOSS

STANDARD
Table 4-6 Progress Toward 2028 Water Loss Standard

2028 Real Water Loss
Standard per Unit per
day
Units for Real
Water Loss
Drop down list
Number of Units
(Connections or
Miles corresponding
with units selected)
Volume of Total Real
Loss
(from AWWA Water
Loss Audit)
(AF)
2028 Apparent
Water Loss
Standard per Unit
per Day
Units for
Apparent Water
Loss
Number of
Connections
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
CA1910148 Yes 26.8
Gallons per
Service
Connection per
Day (GPSCD)
3824 411.66 96.1 40.3
Gallons per
Service
Connection per
Day (GPSCD)
3824 122.149 28.5
Gallons per
Service
Connection per
Day (GPSCD)
Gallons per
Service
Connection per
Day (GPSCD)
Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
NOTES:

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

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

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

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CHAPTER 5
SB X7-7 BASELINES, 2020TARGETS, AND 2025 REPORTING
LAY DESCRIPTION – CHAPTER 5
SB X7-7 BASELINES, 2020 TARGETS, AND 2025 REPORTING
Chapter 5 (SB X7-7 Baselines, 2020 Targets, and 2025 Reporting) of the City’s 2025 Plan discusses and provides the following:
 The Water Conservation Act of 2009 (or SB X7-7) required the State of California achieve a 20 percent reduction in urban water use by the year 2020.  SB X7-7 required urban water suppliers, including the City, to develop a “2020 Water Use Target” to assist the State of California to achieve the 20 percent reduction. The 2020 Water Use Target represents the amount of water each person should use per day (i.e. gallons per capita per day or GPCD) by the year 2020.
 The City previously determined its 2020 Water Use Target during the preparation of its 2015 Plan by completing standardized tables (or the SB X7-7 Verification Form) to demonstrate compliance with the Water Conservation Act of 2009The City’s 2020 Water Use Target was 206 GPCD.
 The City’s per-capita water use during Fiscal Year 2019-20 was 199 GPCD. The City’s confirmed 2020 Water Use Target was 206 GPCD. The City’s per-capita water use during Fiscal Year 2019-20 met the 2020 Water Use Target.

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REPORTING REQUIREMENTS FOR WHOLESALE AGENCIES
CWC 10608.12.
(aj) “Urban wholesale water supplier,” means a water supplier, either publicly or privately owned, that provides more than 3,000 acre-feet of water annually at wholesale for potable municipal purposes.

CWC 10608.36.

Urban wholesale water suppliers shall include in the urban water management plans required pursuant to Part 2.6 (commencing with Section 10610) an assessment of their present and proposed future measures, programs, and policies to help achieve the water use reductions required by this part.

The City is not a wholesale agency and is not required by DWR to complete Section 5.1.

REPORTING REQUIREMENTS FOR RETAIL SUPPLIERS
CWC 10608.40.

Urban water retail suppliers shall report to the department on their progress in meeting their urban water use targets as part of their urban water management plans submitted pursuant to Section 10631.

CWC 10608.12.
(af) “Urban retail water supplier” means a water supplier, either publicly or privately owned, that directly provides potable municipal water to more than 3,000 end users or that supplies more than 3,000 acre-feet of potable water annually at retail for municipal purposes.

The Water Conservation Act of 2009 (or SB X7-7) required the State of California achieve a 20 percent reduction in urban water use by the year 2020. SB X7-7 required urban water suppliers, including the City, to develop a “2020 Water Use Target” to assist the 2025 Urban Water Management Plan

City of Sierra Madre Page 5-3
State of California to achieve the 20 percent reduction. The 2020 Water Use Target represents the amount of water each person should use per day (i.e. gallons per capita per day or GPCD) by the year 2020.

The City previously determined its 2020 Water Use Target during the preparation of its 2015 Plan by completing standardized tables (or the SB X7-7 Verification Form) to demonstrate compliance with the Water Conservation Act of 2009. The City’s SB X7-7 Verification Form was also included in its 2020 Plan. The City’s 2020 Water Use Target was 206 GPCD.

SUPPLIER WAS NOT AN URBAN RETAIL WATER SUPPLIER
Section 5.2.1 is not applicable to the City.

The City was an urban retail water supplier during and before the 2020 Plan cycle.

SUPPLIER MET 2020 TARGET IN 2020
The City previously calculated its “2020 Water Use Target” in its 2015 Plan pursuant to the methodology provided by DWR. The City’s 2020 Water Use Target was confirmed to be 206 GPCD.

As discussed in the City’s 2020 Plan, the annual gross water use by the City during FY 2019-20 was 2,392 AF. In addition, the estimated population within the City’s service area for FY 2019-20 was 10,731. As a result, the City’s per-capita water use during FY 2019- 20 was 199 GPCD. As shown in Table 5-1, the City’s per-capita water use during FY 2019-20 met the 2020 Water Use Target. The City also demonstrated compliance with the 2020 Water Use Target by completing the SB X7-7 2020 Compliance Form (included in the 2020 Plan).
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SUPPLIER DID NOT MEET 2020 TARGET IN 2020—NO

CHANGE TO SERVICE AREA
Section 5.2.3 is not applicable to the City.

As indicated in Section 5.2.2, the City previously met its 2020 Water Use Target as part of the 2020 Plan.

SUPPLIER DID NOT MEET 2020 TARGET—CHANGE TO
SERVICE AREA SINCE 2020
Section 5.2.4 is not applicable to the City.

As indicated in Section 5.2.2, the City previously met its 2020 Water Use Target as part of the 2020 Plan. In addition, the City has not had any changes to its service area since 2020.

FUNDING ELIGIBILITY
CWC 10608.56.
(a) On and after July 1, 2016, an urban retail water supplier is not eligible for a water grant or loan awarded or administered by the state unless the supplier complies with this part.

If a retail water supplier does not achieve its 2020 Water Use Target, the retail water supplier is not eligible to receive a water grant or loan from the State of California until it complies. The following two exceptions to this are provided:
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 Water Code Section 10608.56(c) states that a water supplier shall be eligible for a water loan or grant if it “has submitted to the department for approval a schedule, financing plan, and budget, to be included in the grant or loan agreement, for achieving the per-capita reductions.”
 Water Code Section 10608.56(e) states that a water supplier can also be eligible for a water loan or grant if it “has submitted to the department for approval documentation demonstrating that its entire service area qualifies as a disadvantaged community.”
As indicated in Section 5.2.2, the City previously met its 2020 Water Use Target as part of the 2020 Plan.

NEXUS TO STATE WATER BOARD URBAN WATER-USE
OBJECTIVES (NOT REQUIRED FOR UWMPs)
SWRCB’s “Making Conservation A Way of Life Regulation” (under the California Code of Regulations, Title 23, Section 965 et seq) requires urban retail water suppliers to annually calculate and comply with an Urban Water Use Objective (UWUO); carry out commercial, industrial, and institutional (CII) performance measures; and provide progress reports.

The regulation is expected to reduce inefficient water use and protect water supplies from the effects of rising temperatures and drier conditions due to climate change.

The Urban Water Use Objective is the sum of standard-based water use budgets for efficient residential indoor use, residential outdoor use, CII landscapes with dedicated irrigation meters (DIMs), and real water losses. Each budget is the product of the applicable standard and the water supplier’s unique characteristics (e.g., population).

Water suppliers will be assessed for compliance with their overall objective, not each standards-based budget.
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The residential indoor water use standard is based on 55 GPCD (until December 31, 2024), 47 GPCD (from January 1, 2025 to January 1, 2030), and 42 GPCD (beginning January 1, 2030). The residential outdoor water standard is based on a landscape efficiency factor (representing plant factors and irrigation efficiency) of 0.80 (until June 30, 2035), 0.63 (from July 1, 2035 to June 30, 2040), and 0.55 (beginning July 1, 2040). The standard for commercial, industrial, and institutional (CII) landscapes is based on a landscape efficiency factor of 0.80 (until June 30, 2035), 0.63 (from July 1, 2035 to June 30, 2040), and 0.45 (beginning July 1, 2040). Urban retail water suppliers are also required to comply with real water loss standards by January 1, 2028.

DWR has indicated that compliance with the Urban Water Use Objective requirements are under the authority of the SWRCB and that the requirements are not part of Urban Water Management Plan content requirements. However, the SWRCB uses the 2020 Water Use Targets as a back stop for the Urban Water Use Objective calculations. The Urban Water Use Objectives, together with excluded demands, are to be more efficient than the 2020 Water Use Targets.

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SUBMITTAL TABLES
The applicable standardized Submittal Table referenced within Chapter 5 is provided below.

Table 5-1 SB X7-7 2020 Target Progress
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CHAPTER 6

NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
LAY DESCRIPTION – CHAPTER 6

NORMAL-YEAR WATER SUPPLY CHARACTERIZATION
Chapter 6 (Normal-Year Water Supply Characterization) of the City’s 2025 Plan discusses and provides the following:
 The City’s water supply sources include groundwater pumped from the Raymond Basin, treated imported water purchased from SGVMWD through MWD (imported water is allowed to recharge the groundwater basin, then produced as groundwater supply), and local treated groundwater from the West Tunnel located in the Little Santa Anita Canyon.
 The City’s main source of water supply is groundwater pumped from the Raymond Basin.
 A tabulation of the City’s historical water supplies is provided in Section 6.1.  A discussion regarding the City’s imported water supplies from SGVMWD through MWD is provided. Information regarding imported water connections, capacities, reliability, and historical production is provided.
 A discussion regarding the City’s groundwater supplies from the Raymond Basin is provided. Information regarding basin location, adjudication, management, water levels, water quality, water rights, and historical production is provided.  A discussion regarding the City’s West Tunnel groundwater supplies from the Little Santa Anita Canyon is provided. Information regarding diversion locations, water rights, and historical production is provided.
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 The City’s proposed future projects to maximize its water supply resources are discussed.
 The City’s “energy intensity” is discussed and represents the quantity of energy consumed, measured in kilowatt hours, divided by the volume of water, measured in acre-feet over a one-year period. The total energy intensity associated with the City’s water management processes was estimated during FY 2024-25.

In this Chapter, the City will identify and describe each of its sources of water supply. In addition, the City will describe the following:
 Management of each water supply source;
 Current provisions of a basin adjudication or Groundwater Sustainability Plan (GSP), as applicable, pertaining to management of groundwater supplies;  Measures the City is taking to develop potential new sources of water supply (as applicable); and
 Opportunities for exchanges and transfers on a long- or short-term basis.

The characterization of the City’s water supply sources will account for the anticipated availability during a normal year, a single dry year, a five consecutive year drought, along with projections through FY 2049-50.

WATER SUPPLY ANALYSIS OVERVIEW
CWC 10631.
(b) Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a), providing supporting and related information, including all of the following:
(1) A detailed discussion of anticipated supply availability under a normal water year, single dry year, and droughts lasting at least five years, as well as more frequent and severe periods of drought, as described in the drought risk assessment. For each source of water supply, 2025 Urban Water Management Plan

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consider any information pertinent to the reliability analysis conducted pursuant to Section 10635, including changes in supply due to climate change. (2) When multiple sources of water supply are identified, a description of the management of each supply in correlation with the other identified supplies. (3) For any planned sources of water supply, a description of the measures that are being undertaken to acquire and develop those water supplies.

CWC 10631.
(h) … The wholesale agency shall provide information to the urban water supplier for inclusion in the urban water supplier’s plan that identifies and quantifies, to the extent practicable, the existing and planned sources of water as required by subdivision (b), available from the wholesale agency to the urban water supplier over the same five-year increments, and during various water-year types in accordance with subdivision (f). An urban water supplier may rely upon water supply information provided by the wholesale agency in fulfilling the plan informational requirements of subdivisions (b) and (f).

The City’s water supply sources include groundwater pumped from the Raymond Basin, treated imported replenishment water purchased from SGVMWD through MWD, and local groundwater from the West Tunnel of the Little Santa Anita Canyon. The City’s main source of water supply is groundwater pumped from the Raymond Basin. A tabulation of the City’s historical water supplies is provided below.

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Fiscal Year
System Water Supply Sources (AF)
Total
Potable Water
Groundwater
MWD
Imported
Water1 Raymond Basin
Groundwater West Tunnel
2010-11 2,189 489 0 2,678
2011-12 2,408 278 0 2,686
2012-13 2,691 149 0 2,841
2013-14 866 22 1,611 2,499
2014-15 76 2 2,047 2,125
2015-16 1,023 5 1,183 2,211
2016-17 1,979 4 0 1,982
2017-18 2,235 7 0 2,241
2018-19 2,211 9 0 2,220
2019-20 2,387 5 0 2,392
2020-21 2,472 0 0 2,472
2021-22 2,406 0 0 2,406
2022-23 1,989 0 0 1,989
2023-24 2,148 0 0 2,148
2024-25 2,461 0 0 2,461

1 Reflects water delivered for direct use.

Imported SGVMWD water deliveries for spreading purposes during FY 2020-21, 2021-22, 2022-23, 2023-24 and 2024-25 equaled approximately 1,545 AF, 1,525 AF, 1,150 AF, 1,257 AF, and 1,612 AF, respectively.

SPECIFIC ANALYSIS APPLICABLE TO ALL WATER SUPPLY

SOURCES
The section below provides a discussion of the following information to the extent practical:
 The City’s existing and planned sources of water supply are identified; 2025 Urban Water Management Plan

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 Each source of supply is quantified in five-year increments through FY 2049-50;  The anticipated supply availability under normal, single dry, and five consecutive dry years, and any other water year conditions included in the Drought Risk Assessment (see Chapter 7) are described;
 The management of each water supply in correlation with other identified supplies is described.
 Information pertinent to the reliability analysis, including climate change effects, is considered.

The City historically has relied on groundwater supplies from the Raymond Basin, treated imported replenishment water purchased from SGVMWD through MWD, and local groundwater supplies from the West Tunnel of the Little Santa Anita Canyon. The following descriptions summarize the City’s sources of supply (detailed descriptions are provided in Section 6.2).

Existing and Planned Sources of Supply
Purchased Treated Imported Water
The City has historically purchased treated imported replenishment water from SGVMWD, as described in Section 6.2.1. In addition, Section 6.2.1 provides a detailed discussion of the existing and planned supply of the treated imported replenishment water, including a description of the management and reliability of those treated imported water supplies. As discussed in Section 6.2.10, the City is developing a well in the Main Basin, which will eliminate the need to deliver treated imported water to replenish the Raymond Basin.
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Groundwater
The City has historically pumped groundwater from the Raymond Basin as described in Section 6.2.2. In addition, Section 6.2.2 provides a detailed discussion of the existing and planned supply of the groundwater, including a description of the management and reliability of those groundwater supplies. Table 6-8 summarizes the actual groundwater supplies for FY 2024-25. In addition, Table 6-9 summarizes the projected water supply, in five-year increments, through FY 2049-50 under varying water supply conditions.

In addition, the City is a Party to the Main Basin Judgment. As discussed in Section

6.2.10, in partnership with the City of Arcadia, the City is developing a new joint well project at the Arcadia Public Works Services Department property. This project is expected to yield over 2,000 gpm (with 1,000 gpm going to the City of Sierra Madre) from the Main Basin. The City is constructing the appurtenant pipeline to the City.

The City has historically diverted water from the West Tunnel of the Little Santa Anita Canyon as described in Section 6.2.2. In addition, Section 6.2.2 provides a discussion of the existing and planned use of the West Tunnel, including a description of the management and reliability of those groundwater supplies. Table 6-8 summarizes the actual surface water supplies for FY 2024-25. In addition, Table 6-9 summarizes the projected water supply, in five-year increments, through FY 2049-50 under varying water supply conditions.

Storm Water
The City has historically received groundwater from the Raymond Basin and local groundwater from the West Tunnel of the Little Santa Anita Canyon. Management and use of the stormwater runoff from the Raymond Basin watershed is crucial to groundwater management and surface water supplies. The City has surface water diversion rights from Big Santa Anita Canyon (3,500 AF) and Little Santa Anita Canyon (1,500 AF) in which 2025 Urban Water Management Plan

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stormwater (including water stored behind Santa Anita Dam) can be diverted to the Sierra Madre Spreading Grounds for groundwater replenishment purposes. However, the City currently does not have its own program to beneficially use stormwater runoff as a direct source of supply.

SPECIAL CONSIDERATIONS
The City considered the issues described below when developing its planned sources of water supply.

6.1.2.1 CLIMATE CHANGE EFFECTS
Climate change has the possibility of impacting the availability of planned water supplies, particularly during a drought period. Section 4.2.5.6 of this Plan provides a discussion regarding climate change effects on the City’s various sources of supply.

6.1.2.2 REGULATORY CONDITIONS AND PROJECT DEVELOPMENT
The City has considered the implications of emerging regulatory conditions and project development on the availability of planned water supplies. Section 1.4 provides a discussion the reduced reliance on imported water supplies as well as the proposed Pure Water Southern California recycled water project.

6.1.2.3 OTHER LOCALLY APPLICABLE CRITERIA
There are no locally applicable criteria which applies to the City. 2025 Urban Water Management Plan

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6.1.2.4 WHOLESALE AND RETAIL SUPPLIERS COORDINATION
Because the City relies on wholesale water supplies, the City has provided its 2025 Plan to San Gabriel Valley Municipal Water District as discussed in Section 2.4.1.

WATER SUPPLY CHARACTERIZATION

PURCHASED OR IMPORTED WATER

SAN GABRIEL VALLEY MUNICIPAL WATER DISTRICT
The City can purchase treated, imported water from San Gabriel Valley Municipal Water District through the Metropolitan Water District of Southern California. SGVMWD coordinated with MWD to construct an emergency connection in 2012 for the City to received treated imported water which initially was delivered to the City’s distribution system. The capacity of the connection is approximately 2,500 gpm. Beginning in 2015, the City began delivering the treated imported water to the Sierra Madre Spreading Grounds for the purposes of groundwater spreading. The imported water spread is used as a credit to supplement the City’s water production rights in the Raymond Basin. A further discussion regarding the City’s production from the Raymond Basin is provided in Section 6.2.2.

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GROUNDWATER
CWC 10631.
(b)(4) If groundwater is identified as an existing or planned source of water available to the supplier, all of the following information:
(A) The current version of any groundwater sustainability plan or alternative adopted pursuant to Part 2.74 (commencing with Section 10720), any groundwater management plan adopted by the urban water supplier, including plans adopted pursuant to Part 2.75 (commencing with Section 10750), or any other specific authorization for groundwater management for basins underlying the urban water supplier’s service area.
(B) A description of any groundwater basin or basins from which the urban water supplier pumps groundwater. For basins that a court or the board has adjudicated the rights to pump groundwater, a copy of the order or decree adopted by the court or the board and a description of the amount of groundwater the urban water supplier has the legal right to pump under the order or decree. For a basin that has not been adjudicated, information as to whether the department has identified the basin as a high- or medium-priority basin in the most current official departmental bulletin that characterizes the condition of the groundwater basin, and a detailed description of the efforts being undertaken by the urban water supplier to coordinate with groundwater sustainability agencies or groundwater management agencies listed in subdivision (c) of Section 10723 to maintain or achieve sustainable groundwater conditions in accordance with a groundwater sustainability plan or alternative adopted pursuant to Part 2.74 (commencing with Section 10720).
(C) A detailed description and analysis of the location, amount, and sufficiency of groundwater pumped by the urban water supplier for the past five years. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records.
(D) A detailed description and analysis of the amount and location of groundwater that is projected to be pumped by the urban water supplier. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records.

RAYMOND BASIN
Raymond Basin - Sustainable Groundwater Management Act
The Raymond Basin is identified as Basin Number 4-013 pursuant to DWR Bulletin 118.

The Sustainable Groundwater Management Act of 2014 (SGMA), identifies the Raymond Basin as an adjudicated groundwater basin, is exempt from the requirements of 2025 Urban Water Management Plan

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developing a Groundwater Sustainability Plan and subsequently was designated a verylow-priority basin in DWR’s 2019 SGMA Basin Prioritization report. In compliance with SGMA, the Raymond Basin Management Board, which serves as the Watermaster for the Raymond Basin, submits its Annual Report to DWR.

Raymond Basin - Adjudication
In 1937, the City of Pasadena filed suit to adjudicate water rights of the Raymond Basin.

A copy of the Raymond Basin adjudication is located in Appendix F. DWR was retained to prepare a Report of Referee which described the geology and hydrogeology of the Raymond Basin and identified the Safe Yield of the Raymond Basin as 21,900 acre-feet.

In 1950, the City of Pasadena requested the Safe Yield of the Raymond Basin to be redetermined. Subsequently, the Court issued a Modification of Judgment on April 29, 1955 increasing the Safe Yield of the Raymond Basin to 30,622 acre-feet. This is referred to as the “Decreed Right of 1955” and water rights for all parties are provided. On January 17, 1974, the second modification of the Raymond Basin Judgment was signed allowing Parties credit for spreading of canyon diversions in spreading grounds in the vicinity of the Arroyo Seco, Eaton Wash and Santa Anita Creek Canyon. On March 26, 1984, the third modification of the Raymond Basin Judgment was signed establishing the Raymond Basin Management Board as the Watermaster for the Raymond Basin.

The Raymond Basin Judgment adjudicated groundwater rights based on a long-term average yield of the Raymond Basin. The Raymond Basin Judgment allows a party to exceed its Decreed Right by no more than 10 percent, which will be deducted from the following year’s total allowable extraction. Conversely, a party is not allowed to carryover more than 10 percent of its Decreed Right to a subsequent year. 2025 Urban Water Management Plan

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Raymond Basin – Description
The Raymond Basin is located in Los Angeles County about 10 miles north-easterly of downtown Los Angeles. Raymond Basin is a wedge in the northwesterly portion of the San Gabriel Valley and is bounded on the north by the San Gabriel Mountains, on the west by the San Rafael Hills and is separated from the Main San Gabriel Basin on the southeast by the Raymond Fault. The Raymond Basin is divided into an eastern unit, which is the Santa Anita sub-area, and the Western unit which is the Pasadena sub-area and the Monk Hill Basin. The location of the Raymond Basin and the subareas, as shown on Figure 3, the surface area of Raymond Basin is about 40.9 square miles. The principal streams in the Raymond Basin are the Arroyo Seco, Eaton Wash and Santa Anita Wash.

The Arroyo Seco drains to the Los Angeles River, while Eaton Wash and Santa Anita Wash drain to the Rio Hondo, a distributary of the San Gabriel River.

The geology of the Raymond Basin is described in detail in the “Report of Referee” prepared in 1943 by the State of California Division of Water Resources. The Raymond Basin is roughly triangular in shape. Its northern boundary, about twelve miles in length, is formed by a portion of the southerly front of the San Gabriel Mountains. The western boundary of the Raymond Basin is about eight miles long and is also composed of the same Basement Complex rocks which form the mountains and are continuous at depth, together with a small area of marine Tertiary sediment at the southern end. The Raymond Fault, the southern boundary of the triangle, crosses the Valley floor for a distance of about nine miles, connecting a granitic spur from the mountains at the eastern end of the Raymond Basin with Tertiary sediments outcropping in its southwestern corner.

The Raymond Fault separates Raymond Basin from the Main San Gabriel Basin (Main Basin). The fault zone is not completely impervious and groundwater can flow across this boundary into the Main Basin, particularly in the northeasterly portion of the boundary.

The source of natural groundwater supply to the Raymond Basin is direct rainfall, 2025 Urban Water Management Plan

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percolation from surface runoff from the northern and western sides, and presumably underground percolation of water from the mountain mass to the alluvium.

DWR describes the hydrogeology of the Raymond Basin in its Bulletin 118 report, Basin Number 4-023. According to the report, the water-bearing materials of the Raymond Basin are dominated by unconsolidated Quaternary alluvial gravel, sand, and silt deposited by streams flowing out of the San Gabriel Mountains. Younger alluvium typically follows active streambeds and reaches a maximum thickness of about 150 feet.

Older alluvium generally thickens southward from the mountain front, reaching a maximum of about 1,140 feet near Pasadena, then thins to about 200 feet near the Raymond Fault. However, confined groundwater conditions have existed locally in the Raymond Basin, particularly along the Raymond Fault near Raymond Hill where layers of finer grained sediments become more abundant.

The Raymond Fault trends east-northeast and acts as a groundwater barrier along the southern boundary of the Raymond Basin. This fault acts as a complete barrier along its western end and becomes a less effective barrier at its eastward end. East of Santa Anita Wash, this fault ceases to be an effective barrier and the flow of groundwater southward into the Main Basin becomes essentially unrestricted. A north-trending divide paralleling the Eaton Wash separates both surface and subsurface water flow in the eastern portion of the Raymond Basin. The water level is higher on the eastern side of this divide, ranging from 300 feet higher in the north to about 50 feet higher in the south. Monk Hill, an emergent mound of consolidated bedrock within the Raymond Basin, causes groundwater to flow around it, but does not appreciably change the regional flow pattern.

Groundwater elevation contour maps for the Raymond Basin are presented in the Raymond Basin Annual Reports4.
4 https://www.raymondbasin.org/reports
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Natural recharge to the Raymond Basin is mainly from direct percolation of precipitation and percolation of ephemeral stream flow from the San Gabriel Mountains in the north.

The principal streams bringing surface inflow are the Arroyo Seco, Eaton Creek and Santa Anita Creek. Some stream runoff is diverted into spreading grounds and some is impounded behind small dams allowing the water to infiltrate and contribute to groundwater recharge of the Raymond Basin. An unknown amount of underflow enters the Raymond Basin from the San Gabriel Mountains through fracture systems.

No recent estimates of available groundwater storage have been made for in the Raymond Basin. DWR (1971) study estimated the available stored water to be 1,000,000 acre-feet in 1970, leaving about 450,000 acre-feet of storage space available.

Groundwater quality within the Raymond Basin is generally good quality with regards to most constituents except for high fluoride concentrations in the foothills and high nitrate concentrations in the Monk Hill and Pasadena Subareas. Volatile Organic Compounds (VOCs) including Trichloroethylene (TCE) and Tetrachloroethylene (PCE) have been detected in the Raymond Basin (particularly near the Arroyo Seco). In 1997, Perchlorate was first detected in several monitoring wells at the National Aeronautics and Space Administration’s (NASA) Jet Propulsion Laboratory (JPL) Superfund Site.

Raymond Basin - Historical Production
The Decreed Right of 1955 provided the City with water rights to 1,764.0 AFY from the Santa Anita Subarea. The City also has the right to obtain credit for "salvage water." Salvage water is surface water percolated into the Santa Anita sub-area minus losses for natural percolation and subsurface outflow. Salvage water credits allow the City to (annually) extract more than 1,764.0 acre-feet from the Santa Anita Sub-area. However, due to recent multiple dry year conditions, the Raymond Basin Management Board implemented a “500-foot” level limitation for all Decreed Rights to the Santa Anita Subarea in 2013. As a result, the City’s adjusted right to the Santa Anita Subarea was 2025 Urban Water Management Plan

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limited to 940.0 AFY. In October 2015, after five years of unprecedented drought, the Raymond Basin Management Board authorized the use of imported water for spreading on behalf of the City. MWD entered into an agreement with the City and SGVMWD to deliver up to 2,500 AFY of treated, imported water for spreading within the Santa Anita sub-area. A new imported water connection was constructed at the Sierra Madre Spreading Grounds for the purposes of spreading to allow for additional groundwater by the City. Over the past five years, MWD has delivered 1,150 AFY to 1,612 AFY, with an average of 1,418 AFY, for spreading on behalf of the City.

Due to the “500-foot” level limitation is in effect, the City’s water rights to the Raymond Basin are currently based on the adjusted rights to the Santa Anita Subarea of 940.0 AFY plus any imported water spread at the Sierra Madre Spreading Grounds. Over the past five years, the City has produced 1,989 AFY to 2,472 AFY, with an average of 2,295 AFY from the Raymond Basin. The City’s projected production from the Raymond Basin, over the next 25 years in five-year increments, is provided in Table 6-9.

TUNNEL WATER
The City owns two tunnels located in the Little Santa Anita Canyon in the mountains above the City of Sierra Madre, one on either side of the Sierra Madre Dam. These tunnels act as horizontal wells and produce groundwater by gravity flow.

The City's wells and tunnels have traditionally supplied water to the City for the last 90 years. Currently, water is only taken directly into the City’s distribution system from the West Tunnel, which has a maximum capacity of approximately 500 gallons per minute.

The East Tunnel water is currently inactive due to the influence of surface water on its north branch. The tunnels were constructed (in the 1920s or earlier) and predate the adjudication of the Raymond Basin (discussed above). The Raymond Basin adjudication 2025 Urban Water Management Plan

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did not address this source of water and the City maintains the full right to the water produced from these tunnels.

Since the production of water from these tunnels is dependent on the hydrologic cycle, production rates decline after several consecutive years of dry conditions. Thus, in multiple dry years, these tunnels would not provide a significant source of supply. Over the past five years, the City has not produced from the West Tunnel. The City’s projected production from the West Tunnel, over the next 25 years in five-year increments, is provided in Table 6-9.

MAIN SAN GABRIEL BASIN
Main Basin - Sustainable Groundwater Management Act
The Main San Gabriel Basin (Main Basin) is a sub-basin of the San Gabriel Valley Basin pursuant to DWR Bulletin 118, Basin Number 4-013. Pursuant to the Sustainable Groundwater Management Act of 2014, the Main Basin was named as an adjudicated groundwater basin and is exempt from the requirements of developing a GSP and subsequently was designated a very-low-priority basin in DWR’s 2019 SGMA Basin Prioritization report. In compliance with SGMA, the Main Basin Watermaster submits its Annual Report to DWR.

Main Basin - Adjudication
Main Basin – Long Beach Judgment
On May 12, 1959, the Board of Water Commissioners of the City of Long Beach, the Central Basin Municipal Water District (Central District), and the City of Compton, as plaintiffs, filed an action against San Gabriel and 24 other producers of groundwater from 2025 Urban Water Management Plan

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the San Gabriel Valley as defendants. This action sought a determination of the rights of the defendants in and to the waters of the San Gabriel River system and to restrain the defendants from an alleged interference with the rights of plaintiffs and persons represented by the Central District in such waters. After six years of study and negotiation a Stipulation for Judgment was filed on February 10, 1965, and the Judgment (Long Beach Judgment) was entered on September 24, 1965. Under the terms of the Long Beach Judgment, the water supply of the San Gabriel River system was divided at Whittier Narrows between San Gabriel Valley upstream and the coastal plain of Los Angeles County downstream. A copy of the Long Beach Judgment can be found in Appendix G. During water year 2018-19, the Water Replenishment District of Southern California (WRD) intervened in the Long Beach Judgment for the purpose of assuming all of the requirements of the Plaintiffs and the City of Long Beach, Central District, and the City of Compton were dismissed from their collective responsibilities by the Court.

Under the terms of the Long Beach Judgment, the area downstream from Whittier Narrows (Lower Area), the plaintiffs and those they represent, are to receive a quantity of usable water annually from the San Gabriel River system comprised of usable surface flow, subsurface flow at Whittier Narrows and water exported to the Lower Area. This annual entitlement is guaranteed by the area upstream of Whittier Narrows (Upper Area), the defendants, and provision is made for the supply of Make-up Water by the Upper Area for years in which the guaranteed entitlement is not received by the Lower Area.

Make-up Water is imported water purchased by the Main Basin Watermaster and delivered to agencies in Central District to satisfy obligations under the Long Beach Judgment. The entitlement of the Lower Area varies annually, dependent upon the 10-year average annual rainfall in the San Gabriel Valley for the 10 years ending with the year for which entitlement is calculated.

The detailed operations described in the Long Beach Judgment are complex and requires continuous compilation of data so that annual determinations can be made to assure 2025 Urban Water Management Plan

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compliance with the Long Beach Judgment. In order to do this, a three-member Watermaster was appointed by the Court, one representing the Upper Area parties nominated by and through Upper San Gabriel Valley Municipal Water District (Upper Water), one representing the Lower Area parties nominated by and through WRD, and one jointly nominated by Upper Water and WRD. This three-member board is known as the San Gabriel River Watermaster (River Watermaster).

The River Watermaster meets periodically during the year to adopt a budget, to review activities affecting water supply in the San Gabriel River system area, to compile and review data, to make determinations of usable water received by the Lower Area, and to prepare its annual report to the Court. The River Watermaster has rendered annual reports for the water years 1963-64 through 2024-25 and operations of the river system under that Court Judgment and through the administration by the River Watermaster have been satisfactory since its inception.

One major result of the Long Beach Judgment was to leave the Main Basin free to manage its water resources so long as it meets its downstream obligation to the Lower Area under the terms of the Long Beach Judgment. Upper Water intervened in the Long Beach case as a defendant to enforce the provisions of a Reimbursement Contract, which was incorporated into the Long Beach Judgment to assure that any Make-up Water obligations under the terms of the Long Beach Judgment would be satisfied.

Main Basin – Main Basin Judgment
The Upper Area then turned to the task of developing a water resources management plan to optimize the conservation of the natural water supplies of the area. Studies were made of various methods of management of the Main Basin as an adjudicated area and a report thereon was prepared for the Upper San Gabriel Valley Water Association, an association of water producers in the Main Basin. After due consideration by the Association, Upper Water was requested to file as plaintiff, and did file, an action on 2025 Urban Water Management Plan

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January 2, 1968, seeking an adjudication of the water rights of the Main Basin and its Relevant Watershed. After several years of study (including verification of annual water production) and negotiations, a stipulation for entry of Judgment was approved by a majority of the parties, by both the number of parties and the quantity of rights to be adjudicated. Trial was held in late 1972 and the Judgment (Main Basin Judgment) was entered on January 4, 1973. The Main Basin Judgment was most recently amended on June 21, 2012. A copy of the Main Basin Judgment can be found in Appendix H.

Under the terms of the Main Basin Judgment, all rights to the diversion of surface water and production of groundwater within the Main Basin and its Relevant Watershed were adjudicated. The Main Basin Judgment provides for the administration of the provisions of the Main Basin Judgment by a nine member Main Basin Watermaster. Six of those members are nominated by water producers (producer members) and three members (public members) are nominated by the Upper Water and the SGVMWD, which overlie most of the Basin. The nine member board employs a staff, an attorney and a consulting engineer. The Main Basin Watermaster holds public meetings on a regular monthly basis throughout the year.

The Main Basin Judgment does not restrict the quantity of water, which parties may extract from the Main Basin. Rather, it provides a means for replacing all annual extractions in excess of a Party's annual right to extract water with Supplemental Water.

The Main Basin Watermaster annually establishes an Operating Safe Yield for the Main Basin which is then used to allocate to each Party its portion of the Operating Safe Yield which can be produced free of a Replacement Water Assessment. If a producer extracts water in excess of its right under the annual Operating Safe Yield, it must pay an assessment for Replacement Water, which is sufficient to purchase one acre-foot of Supplemental Water to be spread in the Main Basin for each acre-foot of excess production. All water production is metered and is reported quarterly to the Main Basin Watermaster.
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In addition to Replacement Water Assessments, the Main Basin Watermaster levies an Administration Assessment to fund the administration of the Main Basin management program under the Court Judgment and a Makeup Obligation Assessment in order to fulfill the requirements for any makeup Obligation under the Long Beach Judgment and to supply fifty percent of the administration costs of the River Watermaster service. The Main Basin Watermaster levies an In-lieu Assessment and may levy special Administration Assessments.

Water rights under the Main Basin Judgment are transferable by lease or purchase so long as such transfers meet the requirements of the Judgment. There is also provision for Cyclic Storage Agreements by which Parties and non-parties may store imported supplemental water in the Main Basin under such agreements with the Main Basin Watermaster pursuant to uniform rules and conditions and Court approval.

The Main Basin Judgment provides that the Main Basin Watermaster will, insofar as practicable, spread imported water in the Main Basin to maintain the groundwater elevation at the Key Well above 200 feet. Under the terms of the Long Beach Judgment, any excess surface flows that pass through the Main Basin at Whittier Narrows to the Lower Area (which is then conserved in the Lower Area through percolation to groundwater storage) is credited to the Upper Area as Usable Surface Flow.

Main Basin - Description
The Main San Gabriel Basin is located within the San Gabriel Valley, which is located in southeastern Los Angeles County and is bounded on the north by the San Gabriel Mountains; on the west by the San Rafael and Merced Hills, on the south by the Puente Hills and the San Jose Hills, and on the east by a low divide between the San Gabriel River system and the Upper Santa Ana River system, as shown on Figure 4. 2025 Urban Water Management Plan

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The San Gabriel River and its distributary, the Rio Hondo, drain an area of about 490 square miles upstream of Whittier Narrows. Whittier Narrows is a low gap between the Merced and Puente Hills, just northwest of the City of Whittier, through which the San Gabriel River and the Rio Hondo flow to the coastal plain of Los Angeles County. Whittier Narrows is a natural topographic divide and a subsurface restriction to the movement of groundwater between the Main Basin and the Coastal Plain. The approximately 490 square miles of drainage area upstream of Whittier Narrows consists of about 167 square miles of valley lands and about 323 square miles of mountains and foothills.

The Main Basin includes essentially the entire valley floor of the San Gabriel Valley with the exception of the Raymond Basin and Puente Basin. The boundaries of the Main Basin are the Raymond Basin on the northwest, the base of the San Gabriel Mountains on the north, the groundwater divide between San Dimas and La Verne and the lower boundary of the Puente Basin on the east, and the common boundaries between Upper Water and Central District through Whittier Narrows on the southwest. The common water supply of the Main Basin does not include the Raymond Basin, the area northerly of Raymond Hill Fault, which was adjudicated in the Pasadena v. Alhambra case (Superior Court of the County of Los Angeles, 1944). The Puente Basin, although tributary to the Main Basin, is not included in the Main Basin administered by the Main Basin Watermaster.

The Main Basin (administered by the Main Basin Watermaster) is a large groundwater basin replenished by stream runoff from the adjacent mountains and hills, by rainfall directly on the surface of the valley floor, subsurface inflow from Raymond Basin and Puente Basin, and by return flow from water applied for overlying uses. Additionally, the Main Basin is replenished with imported water. The Main Basin serves as a natural storage reservoir, transmission system and filtering medium for wells constructed therein. 2025 Urban Water Management Plan

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There are three municipal wholesale water districts overlying and/or partially overlying the Main Basin. The three districts are Upper Water, San Gabriel Valley Municipal Water District, and Three Valleys Municipal Water District (TVMWD).

Urbanization of the San Gabriel Valley began in the early part of the twentieth century, but until the 1940s, agricultural land use occupied more area than residential and commercial land use. After World War II, agricultural areas reduced rapidly and tend to be located in the easterly portion of the Main Basin and along power transmission rights of way adjacent to the San Gabriel River. Agricultural plots are discontinuous and relatively small. There are several major industrial areas adjacent to the San Gabriel River and within other portions of the valley. The greatest area of land use in the valley is for residential and commercial purposes. DWR Bulletin 118 does not identify the Main Basin as being in overdraft.

Main Basin - Geology

The Main Basin consists of a roughly bowl-shaped depression of bedrock, filled over millions of years with alluvial deposits. This bowl-shaped depression is relatively deep; the elevation at the base of the groundwater reservoir declines from about 800 feet above mean sea level (MSL) in the vicinity of San Dimas, at the northeast corner of the Main Basin, to about 2,200 feet below MSL in the vicinity of South El Monte (DWR, 1966, Plate II).

Most of the alluvium deposited within this depression is debris from the San Gabriel Mountains, washed and blown down from the side of the mountains over time. This process has also resulted in the materials of the Main Basin varying in size from relatively coarse gravel nearer the mountains to fine and medium-grained sand containing silt and clay as the distance from the mountains increases. The principal water-bearing formations of the Main Basin are unconsolidated and semi-consolidated sediments, which vary in size from coarse gravel to fine-grained sands. The interstices between these 2025 Urban Water Management Plan

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alluvial particles throughout the Main Basin fill with water and transmit water readily to wells. The thickness of the water-bearing materials in the Main Basin ranges from 200 to 300 feet in the northeastern portion of the Main Basin near the mountains (DPW, 1934, page 141) to nearly 4,000 feet in the South El Monte area (DWR, 1966, page 31).

The soils overlying the Main Basin average about six feet in depth. Soil depths are generally greater at the perimeter of the valley and decrease toward the center along the San Gabriel River. These soils are residual, formed in place through chemical, mechanical and plant weathering processes. The infiltration rates of these soils are greater along the natural channels and their adjacent flood plains. Lower infiltration rates are found in the perimeter areas of the valley. Since the valley is mostly urbanized, a significant portion of the area has been paved and many miles of stream channel have been lined for flood control purposes, thus decreasing infiltration of water through streambeds. Detailed basin geology is discussed in the report entitled “Planned Utilization of Ground Water Basins, San Gabriel Valley, Appendix A: Geo-hydrology” (DWR, 1966).

Main Basin - Hydrology
The total fresh water storage capacity of the Main Basin is estimated to be about 9.5 million acre-feet. Of that, about 1,100,000 acre-feet have been used historically in Main Basin operations. The change in groundwater elevation at the Baldwin Park Key Well5 Key Well (Key Well) is representative of changes in groundwater in the Main Basin. One foot of elevation change at the Key Well is roughly the equivalent of about 8,000 acrefeet of water storage. The historical high groundwater elevation was recorded at over 329.1 feet in April 1916, at which time Main Basin storage was estimated to be about 8,700,000 acre-feet. The historical low was recorded in November 2018 at 169.4 feet, at 5 The Baldwin Key Well is a water-level monitoring well located in the City of Baldwin Park used to determine when imported water may or may not be spread in the Basin. 2025 Urban Water Management Plan

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which time Main Basin storage was estimated to be about 7,400,000 acre-feet. The Key Well hydrograph illustrates the cyclic nature of basin recharge and depletion. The hydrograph also illustrates the dramatic recharge capability of the Main Basin during wet periods.

Generally, water movement in the Main Basin is from the San Gabriel Mountains on the north to Whittier Narrows to the southwest. Groundwater movement in the northern and northeastern regions of the Main Basin is affected by faulting. For example, the Raymond Fault located in the northwesterly portion of the Main Basin separates the Raymond Basin from the Main Basin.

The Main Basin is an unconfined aquifer. Although clay deposits appear mixed with the soils in several locations in the Main Basin and there are various clay lenses throughout the Main Basin, they do not coalesce to form a single impermeable barrier for the movement of subsurface water. The Main Basin therefore operates as a single, unconfined aquifer. As previously mentioned, a thorough discussion of basin hydrogeology is contained in the report “Planned Utilization of Ground Water Basins, San Gabriel Valley, Appendix A: Geo-hydrology” (DWR, 1966).

Within the Main Basin there are a number of identified sub-basins. These include the Upper San Gabriel Canyon Basin, Lower San Gabriel Canyon Basin, Glendora Basin, Foothill Basin, Way Hill Basin and San Dimas Basin. In addition, the Puente Basin is tributary to the Main Basin from the southeast, between the San Jose and Puente Hills, but is not included in the Main Basin adjudication.

Main Basin – Groundwater Replenishment
The major sources of recharge to the Main Basin are direct penetration of rainfall on the valley floor, percolation of runoff from the mountains, percolation of imported water and 2025 Urban Water Management Plan

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return flow from applied water. Rainfall occurs predominantly in the winter months and is more intense at higher elevations and closer to the San Gabriel Mountains.

The magnitude of annual recharge from direct penetration of local rainfall and return flow from applied water is not easily quantifiable. Percolation of runoff from the mountains and valley floor along with percolation of imported water has only been estimated. The DPW maintains records on the amount of local and imported water conserved in water spreading facilities and stream channels.

The San Gabriel River bisects the Main Basin. The San Gabriel River originates at the confluence of its west and east forks in the San Gabriel Mountains. It flows through the San Gabriel Canyon and enters the Main Basin at the mouth of the canyon north of the City of Azusa. The San Gabriel River flows southwesterly across the valley to Whittier Narrows, a distance of about 15 miles. It exits San Gabriel Valley at Whittier Narrows, and transverses the Coastal Plain in a southerly direction to reach the Pacific Ocean at Alamitos Bay near the City of Long Beach.

The San Gabriel River is joined and fed by tributary creeks and washes. In the Main Basin these include: Big Dalton Wash, which originates in the San Gabriel Mountains; Walnut Creek, which originates at the northeast end of the San Jose Hills; and San Jose Creek, which originates in the San Gabriel Mountains, but which travels around the southerly side of the San Jose Hills through the Puente Narrows before joining the San Gabriel River just above Whittier Narrows.

The channel of the San Gabriel River bifurcates in the upper middle portion of the Main Basin, forming a channel to the west of and parallel to the San Gabriel River, known as the Rio Hondo. Tributaries draining the westerly portion of the Main Basin, including Sawpit Wash, Santa Anita Wash, Eaton Canyon Wash, Rubio Wash and Alhambra Wash, all of which originate in the San Gabriel Mountains or the foothills, feed the Rio Hondo.

The Santa Anita Wash, Eaton Canyon Wash, Rubio Wash and Alhambra Wash all cross 2025 Urban Water Management Plan

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the Raymond Basin area before entering the Main Basin. The channel of the Rio Hondo passes through Whittier Narrows westerly of the San Gabriel River, and then flows southwesterly to join the Los Angeles River on the Coastal Plain.

To protect residents of the San Gabriel Valley from flooding that can result during periods of intensive rainfall, the Los Angeles County Department of Public Works (DPW) and the U.S. Army Corps of Engineers (Corps of Engineers) have constructed an extensive system of dams, debris basins, reservoirs and flood control channels. The dams and reservoirs also operate as water conservation facilities. The dams and reservoirs that control the flow of the San Gabriel River and the Rio Hondo include: Cogswell Reservoir on the west fork of the San Gabriel River, San Gabriel Reservoir at the confluence of the west and east forks of the San Gabriel River, Morris Reservoir near the mouth of the San Gabriel Canyon, Santa Fe Reservoir in the northerly portion of the Main Basin and Whittier Narrows Reservoir at the southwestern end of the San Gabriel Valley.

Many of the stream channels tributary to the San Gabriel River have been improved with concrete banks (walls) and concrete-lined bottoms. These stream channel improvements have significantly reduced the area of previous stream channels and reduce Main Basin recharge. A number of off-stream groundwater replenishment facilities have been established along these stream channels to offset such reductions in recharge. Some of these facilities are accessible to imported water supplies, while some facilities receive only local runoff.

The paths of the surface streams are mirrored in the soils and in the direction of groundwater movement in the Main Basin. The tributary creeks and washes, carrying smaller amounts of water, generally flow toward the center of the San Gabriel Valley, while the direction of flow of the major streams, the San Gabriel River and the Rio Hondo, is from the mountains in the north to Whittier Narrows in the southwest. In similar fashion, the primary direction of groundwater movement in the Main Basin is from the north to the southwest, with contributing movement generally from the east and west toward the 2025 Urban Water Management Plan

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center of the Main Basin. The greatest infiltration and transmissivity rates of soils in the Main Basin are from north to south, with the maximum rates found in the center of the valley along the stream channels. Generally, the Main Basin directs groundwater to the southwest through Whittier Narrows.

The Main San Gabriel Basin has a freshwater storage capacity of about 8.7 million acrefeet when the Key Well groundwater elevation is at 329.1 feet, of which about 125 feet of elevation change, or about 1,000,000 acre-feet, has been used for historical Basin operations. Local runoff is stored in a series of reservoirs operated by DPW and diverted into spreading grounds to replenish the groundwater supply. Groundwater recharge occurs every year and is exhibited as increasing water levels. High rainfall years can be identified as increases in the groundwater level of 30 feet or more in one year.

In addition to groundwater replenishment with local storm runoff, the Watermaster maintains records of each producer’s water rights and annual production. Although there is no limit on the quantity of water that may be produced, production in excess of a water right is subject to a Replacement Water assessment. Watermaster uses funds collected from producers’ overproduction to purchase imported water from municipal water districts.

Upper Water and TVMWD obtain their water from MWD. SGVMWD has its own contract for SWP water. Watermaster coordinates purchase and delivery of imported water to replenish the ground water basin, thus offsetting the producers’ overproduction and making the Basin whole.

Groundwater Management Plan
The Main Basin has been adjudicated and management of the local water resources within the Main Basin is based on that adjudication. Management of the water resources in the Main Basin is based upon Watermaster services under two Court Judgments: San 2025 Urban Water Management Plan

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Gabriel River Watermaster (River Watermaster)6 and (Main Basin Watermaster)7. The City is a party to the Main Basin Judgment.

The following sections provide a description of the two Judgments and the Five Year Water Quality and Supply Plan that make up the groundwater management plan for the Main Basin. In addition, this section describes SGVMWD’s and San Gabriel Basin Water Quality Authority’s (WQA) policies to promote groundwater basin clean-up.

Operations of the Groundwater Basin
Through the Long Beach Judgment and the Main Basin Judgment, operations of the Main Basin are optimized to conserve local water to meet the needs of the parties of the Main Basin Judgment.

Typically, water producers within San Gabriel District rely upon groundwater from Main Basin for their water supply. The City of Alhambra has agreed to receive treated, imported water as part of the Cooperative Water Exchange Agreement (CWEA) to reduce the groundwater extractions from the western portion of the Main Basin and the associated drawdown concerns.

Imported water for groundwater replenishment is delivered through the flood control channels and diverted and spread at spreading grounds through Main Basin Watermaster’s agreement with DPW. Groundwater replenishment utilizes imported water and is considered Replacement Water under the terms of the Main Basin Judgment. In addition, it can be stored in the Main Basin through Cyclic Storage agreements, 6 Board of Water Commissioners of the City of Long Beach, et al., v. San Gabriel Valley Water Company, et al., Los Angeles County Case No. 722647, Judgment entered September 24, 1965. 7 Upper San Gabriel Valley Municipal Water District v. City of Alhambra, et al., Los Angeles County Case No. 924128, Judgment entered January 4, 1973.
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authorized by terms of the Main Basin Judgment, but such stored water may be used only to supply Supplemental Water to the Main Basin Watermaster.

The Main Basin Watermaster has entered into a Cyclic Storage Agreement with each of the three municipal water districts. One is with MWD and Upper Water, which permits MWD to deliver and store imported water in the Main Basin in an amount not to exceed 200,000 acre-feet for future Replacement Water use. The second Cyclic Storage Agreement is with TVMWD and permits TVMWD to deliver and store up to 50,000 acrefeet for future Replacement Water use. The third is with SGVMWD and permits SGVMWD to deliver and store up to 50,000 acre-feet for future Replacement Water use.

Imported Makeup Water has been delivered to lined stream channels and conveyed to the Lower Area. Makeup Water is required to be delivered to the Lower Area by the Upper Area when the Lower Area entitlement under the Long Beach Judgment exceeds the usable water received by the Lower Area. Imported water is used to fulfill the Makeup Water Obligation when the amount of Makeup Water cannot be fulfilled by reimbursing the Lower Area interests for their purchase of recycled water. The amount of recycled water for which reimbursement may be made as a delivery of Makeup Water is limited by the terms of the Long Beach Judgment to the annual deficiency in Lower Area Entitlement water or to 14,735 acre-feet, whichever is the lesser quantity.

Salt and Nutrient Management Plan
On February 9, 2009, the State Water Board adopted Resolution 2009-0011 that created the “Recycled Water Policy”. The Recycled Water Policy recognized that “…collapse of the Bay Delta ecosystem, climate change, and continuing population growth have combined with a severe drought on the Colorado River, and failing levees in the Delta, to create a new reality that challenges California’s ability to provide the clean water need for a healthy environment, a healthy population and a healthy economy, both now and in the 2025 Urban Water Management Plan

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future.” The Recycled Water Policy encourages appropriate water recycling, water conservation and use of stormwater to increase water supplies within California.

The primary goal of the San Gabriel Valley Salt and Nutrient Management Plan (SNMP) is to assist the Main Basin Watermaster and participating/potential stakeholders to comply with the Recycled Water Policy regarding the use of the recycled water from municipal wastewater treatment facilities as a safe source of water supply, while maintaining the water quality objectives for salt and nutrients in the Basin Plan established by the Los Angeles Regional Water Quality Control Board. The primary objective of the SNMP is to comply with the specific requirements described in the Recycled Water Policy. They include:
1) Characterization of the Main Basin,
2) Identification of sources of salt, nutrients, and constituents of emerging concern (CECs) (when deemed necessary by the Recycled Water Policy) and their fate and transport,
3) Estimation of salt, nutrients, and CECs (if necessary) loadings and assimilative capacities,
4) Identification of water recycling and stormwater recharge/use goals and objectives, 5) Verification of compliance with Resolution No. 68-16 through antidegradation analyses, and
6) Development of a monitoring plan to verify compliance with the Basin water quality objectives.

The SNMP reviewed the geology, hydrology and hydrogeology of the San Gabriel Basin, along with the institutional and management structure for the San Gabriel Basin. Total dissolved solids (TDS), Nitrate, Sulfate, and Chloride were identified as the primary constituents of concern. Sources of loading (precipitation, subsurface inflow, infiltration of applied water, storm runoff and untreated imported water replenishment) and unloading (groundwater pumping and subsurface outflow) were included in a spreadsheet computer 2025 Urban Water Management Plan

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model, along with average water quality data for TDS, Nitrate, Sulfate, and Chloride, on an annual basis.

The SNMP proposed to use the Main Basin Watermaster’s existing Title 22 water quality monitoring program for groundwater and San Gabriel River water, with increased frequencies of monitoring for Total Dissolved Solids and nitrate, to satisfy the monitoring plan requirement of the SNMP. The following are recommendations for on-going salt and nutrient management in the San Gabriel Basin:
 Regularly update the SNMP spreadsheet data so that impacts of potential future projects on salt and nutrient loading may be evaluated.  Continue to collect water quality data throughout the San Gabriel Basin.  Continue to meet with stakeholders on a regular basis to coordinate San Gabriel Basin management activities with an emphasis on stormwater runoff replenishment and continued use of SWP water for groundwater replenishment In-Lieu Program
During calendar year 2014, the ability to deliver Supplemental Water (State Water Project (SWP) water and Colorado River water) to replenish the Basin was severely limited.

Consequently, during fiscal year 2014-15, Main Basin Watermaster developed and implemented a program to have Producers purchase additional treated imported water for direct delivery in-lieu of pumping groundwater (In-Lieu Program), in an effort to reduce the amount of groundwater pumped from the Basin. The Main Basin Watermaster uses the In-Lieu Assessment on all production to fund the additional direct cost incurred by a producer participating in the In-Lieu Program. Main Basin Watermaster has implemented this program during fiscal year 2014-15 and 2015-16.
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Supplemental Water Reliability Storage Program (RDA)
The 2012 Main Basin Judgment Amendments provided the Main Basin Watermaster with increased management flexibility and adaptability; and provided more discretion in making Basin management decisions. A key component of the Judgment Amendments was the new Water Resource Development Assessment to be levied on all production.

The Supplemental Water Reliability Storage Program (RDA) provides a process for the Main Basin Watermaster to generate funds to purchase and store Supplemental Water in the Basin to be used (applied) when there are limitations on the availability of Supplemental Water from the Responsible Agencies. As a result of the severe long-term drought conditions resulting in significant reductions on the quantity of local water replenishment to the Basin, the Main Basin Watermaster expanded RDA into the Supplemental Water Stormwater Augmentation Program (RDA II) described below.

Supplemental Water Stormwater Augmentation Program
The Water Resource Development Assessment for Stormwater Augmentation Program was developed by the Main Basin Watermaster to help manage Basin water supplies under the perceived “worst case” hydrologic conditions, which was assumed to be two additional consecutive 5-year droughts, using the same hydrologic conditions as the recent FY 2011-12 through 2015-16 severe drought. Based upon ten (10) additional consecutive years of drought, the new RDA II Program is intended to purchase imported replenishment water (when available), for stormwater augmentation, to maintain the Baldwin Park Key Well elevation above 180 feet by the end of the tenth year. This Key Well elevation essentially ensures continued Basin water supply to the Basin Producers under a worst case, 15-year sustained drought. The RDA II Program has an assessment of $175/AF on all FY 2024-25 production and is planned to also be $175/AF on all FY 2025-26 production with a potential to increase in the next three to five years. The Main Basin Watermaster will use the RDA II funds to purchase untreated imported water to replenish the Main Basin for the “general benefit” of all Producers within the Main Basin. 2025 Urban Water Management Plan

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Unlike the original RDA (Supplemental Water Replenishment Storage Program), which is a Watermaster pre-purchase of Replacement Water, the RDA II untreated imported water will supplement local stormwater replenishment, enhance overall Basin conditions, and have “no right of recovery” using a water right, by any Main Basin producer.

MWD Letter Agreement
Since 2017, Watermaster, Upper Water, the Three Valleys District, and MWD entered into a series of letter agreements to pre-deliver untreated imported water in support of Basin management programs (Letter Agreement). Through these agreements, MWD has delivered a cumulative total of 405,517.5 acre-feet of imported water. While deliveries have varied depending on hydrological conditions and local stormwater capture, these agreements have provided a critical means of supplementing the Basin’s supplies over time.

During fiscal year 2023–24, Watermaster and Upper Water entered into a fourth agreement with MWD to pre-deliver an additional 87,000 acre-feet of untreated imported water during calendar year 2024. In addition, Watermaster and Three Valleys District entered into a separate agreement with MWD to pre-deliver about 35,000 acre-feet during calendar year 2024. During fiscal year 2024–25, Watermaster and Upper Water entered into a fifth agreement with MWD to pre-deliver an additional 86,000 acre-feet of untreated imported water during calendar year 2025.

Three Year Purchased Water Plan
On June 21, 2012, the Superior Court of the State of California for the County of Los Angeles (Court) approved certain proposed Judgment amendments. Some of these Judgment amendments help Main Basin Watermaster address Supplemental Water supply concerns. One of the amendments, Exhibit H(3)(d), requires that “…on or before November 1 of each year, Main Basin Watermaster shall prepare and distribute to the 2025 Urban Water Management Plan

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Responsible Agencies a three-year projection of its Supplemental Water purchases from each agency. Main Basin Watermaster shall, to the extent feasible, coordinate the tentative schedule for delivery and payment of those purchases with each agency.” Judgment Amendment, Section 45(b)(7), allows Main Basin Watermaster to “…levy an Assessment on all Pumping, as determined through Rules and Regulations … to support the purchase, financing, and/or development of new or additional Supplemental Water sources, in cooperation with one or more Responsible Agencies as appropriate.” Section 45(b)(7) established the “Water Resource Development Assessment” for the purchase or development of additional Supplemental Water supplies. Based on these Judgment amendments, Main Basin Watermaster also amended its Rules and Regulations to include a policy/criteria to develop the “Three-Year Purchased Water Plan” (Three-Year Plan). Under Section 26(d)(5) of the Rules and Regulations, the first priority for spreading of Supplemental Water is “…Supplemental Water ordered by Watermaster from Responsible Agencies for direct delivery to the Basin as Replacement Water…”.

Recognizing many Producers currently pre-purchase Supplemental Water for delivery into their Cyclic Storage accounts, those pre-purchases are considered to have the same priority as Replacement Water.

Exhibit M of Main Basin Watermaster’s amended Rules and Regulations8 provides the policy/criteria for the “Three-year Purchased Water Plan,” and requires Main Basin Watermaster to estimate Supplemental Water purchases from the Responsible Agencies for each of the three subsequent years. The policy/criteria indicate estimated Supplemental Water purchases may be based on the following:
1) The first year shall be, at a minimum, the total Replacement Water requirement for the three Responsible Agencies (Upper Water, San Gabriel District, and Three Valleys). 2) The second and third years may be estimated as follows:
8 https://www.watermaster.org/about-us (Rules and Regulations) 2025 Urban Water Management Plan

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a) Operating Safe Yield (OSY) established by Watermaster for the current fiscal year and next succeeding years;
b) Alternative projections of the OSY;
c) Evaluation of potential wet, average, and dry hydrologic conditions; d) Future groundwater production provided by or estimated for each producer; and e) Depending on Basin conditions, Watermaster may consider additional factors as necessary.

Five-Year Water Quality and Supply Plan
The Main Basin Watermaster was created in 1973 to resolve water issues that had arisen among water users in the San Gabriel Valley. Main Basin Watermaster’s mission was to generally manage the water supply of the Main Basin. During the late 1970s and early 1980s, significant groundwater contamination was discovered in the Main Basin. The contamination was caused in part by past practices of local industries that had carelessly disposed of industrial solvents referred to as Volatile Organic Compounds (VOCs) as well as by agricultural operations that infiltrated nitrates into the groundwater. Cleanup efforts were undertaken at the local, state, and federal level.

Local water agencies adopted a joint resolution in 1989 regarding water quality issues that stated Main Basin Watermaster should coordinate local activities aimed at preserving and restoring the quality of groundwater in the Main Basin. The joint resolution also called for a cleanup plan. In 1991, the Court granted Main Basin Watermaster the authority to control pumping for water quality purposes. Accordingly, Main Basin Watermaster added Section 28 to its Rules and Regulations regarding water quality management. The new responsibilities included development of a Five-Year Water Quality and Supply Plan9, updating it annually, submitting it to the California Regional Water Quality Control Board, 9 https://www.watermaster.org/reports
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Los Angeles Region, and making it available for public review by November 1 of each year.

Main Basin Watermaster prepares and annually updates the Five-Year Water Quality and Supply Plan in accordance with the requirements of the Section 28 Rules and Regulations. The objective is to coordinate groundwater-related activities so that both water supply and water quality in the Main Basin are protected and improved. Many important issues are detailed in the Five-Year Plan, including how Main Basin Watermaster plans to:

1. Monitor groundwater supply and quality;

2. Develop projections of future groundwater supply and quality;

3. Ensure adequate supplemental water is available for groundwater replenishment;

4. Review and cooperate on cleanup projects, and provide technical assistance to other agencies;

5. Assure that pumping does not lead to further degradation of water quality in the Basin;

6. Address Perchlorate, N-nitrosodimethylamine (NDMA), and other emerging contaminants in the Basin;

7. Develop a cleanup and water supply program consistent with the U.S.

Environmental Protection Agency (USEPA) plans for its San Gabriel Basin Superfund sites; and

8. Coordinate and manage the design, permitting, construction, and performance evaluation of the Baldwin Park Operable Unit (BPOU) cleanup and water supply plan.

The Main Basin Watermaster has worked with state and federal regulators, along with local water companies to clean up water supplies. Section 28 of the Main Basin Watermaster’s Rules and Regulations require all producers (including the City) to submit 2025 Urban Water Management Plan

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an application to 1) construct a new well, 2) modify an existing well, 3) destroy a well, or 4) construct a treatment facility. The Main Basin Watermaster prepares a report on the implications of the proposed activity. As a party to the Main Basin Judgment, the City reviews a copy of these reports and is provided the opportunity to submit comments on the proposed activity before the Main Basin Watermaster Board takes final action.

Water Quality Authority 406 Plan

The WQA was established by the State Legislature on February 11, 1993 to develop, finance and implement groundwater treatment programs in the Main Basin. Section 406 of the WQA Act requires the WQA “to develop and adopt a basinwide groundwater quality management and remediation plan” that is required to be consistent with the EPA’s National Contingency Plan (“NCP”) and Records of Decision (“ROD”) and all requirement of the Los Angeles Regional Water Quality Control Board (“LARWQCB”). According to the WQA Act, the Section 406 Plan, which is incorporated in this Plan by reference, must include:
1) Characterization of Basin contamination;
2) A comprehensive cleanup plan;
3) Strategies for financing the design, construction, operation and maintenance of groundwater cleanup facilities;
4) Provision for a public information program; and
5) Coordination of activities with federal, state, and local entities.

WQA reviews and adopts the Section 406 Plan on an annual basis and as necessary, makes revisions according to changing regulatory, political and/or funding environments.

In support of the Section 406 Plan, WQA also adopts an annual FY budget (July 1 through June 30) which includes all projects (actual or planned) WQA is facilitating through its participation during that time period. The budget identifies the various funding sources, 2025 Urban Water Management Plan

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and combinations thereof, to ensure full funding for each project (capital and/or O&M) can be achieved.

Main Basin – Historical and Projected Basin Production
The City is a party to the Main Basin Judgment but historically did not have wells in the Main Basin. However, the City is constructing a new well (Goldring Well) jointly with the City of Arcadia. Under the Main Basin Adjudication, the City does not have pumping rights but can pump from the Main Basin. Although there is no limit on the quantity of water that may be extracted by Parties to the Main Basin Adjudication, including the City, groundwater production in excess of a Party’s water right, or its proportional share (pumper’s share) of the Operating Safe Yield, requires purchase of untreated imported water to recharge the Main Basin. The City plans to obtain groundwater produced from the Main Basin, and delivered through an inter-connecting pipeline with the City of Arcadia. If the City obtains any water from the Main Basin, replacement water may be purchased from SGVMWD to recharge the Main Basin. Any water pumped from Main Basin wells on behalf of the City will be counted toward the City. Over the past five years, the City has not obtained any groundwater from the Main Basin (through the City of Arcadia). The City’s projected production from the Main Basin , over the next 25 years in five-year increments, is provided in Table 6-9.

As discussed above, the Main Basin is managed by the Main Basin Watermaster. The most recent amendments to the Main Basin Judgment were made in June 2012.

Historical fluctuation of the Key Well elevation illustrates that since the Main Basin was adjudicated in 1973, it generally operated between an elevation 250 feet and 200 feet above MSL. Furthermore, at an elevation of 169 feet above MSL at the Key Well, which represents the historical low, the Main Basin has about 7,400,000 acre-feet of available storage. During the period of management under the Judgment, significant drought events have occurred from 1969 to 1977, 1983 to 1991, 1998 to 2004, 2006 to 2009, and 2025 Urban Water Management Plan

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2011 to 2015. In each drought cycle the Main Basin has been managed to maintain water levels.

SURFACE WATER
The City does not use surface water supplies to meet its water demands.

STORMWATER
The City does not directly use stormwater to meet its water demands.

WASTEWATER AND RECYCLED WATER
CWC 10633R.

The plan shall provide, to the extent available, information on recycled water and its potential for use as a water source in the service area of the urban water supplier. The preparation of the plan shall be coordinated with local water, wastewater, groundwater, and planning agencies that operate within the supplier’s service area, and shall include all of the following:
(a) A description of the wastewater collection and treatment systems in the supplier’s service area, including a quantification of the amount of wastewater collected and treated and the methods of wastewater disposal.
(b) A description of the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project. (c) A description of the recycled water currently being used in the supplier’s service area, including, but not limited to, the type, place, and quantity of use. (d) A description and quantification of the potential uses of recycled water, including, but not limited to, agricultural irrigation, landscape irrigation, wildlife habitat enhancement, wetlands, industrial reuse, potable reuse, and other appropriate uses, and a determination with regard to the technical and economic feasibility of serving those uses. (e) The projected use of recycled water within the supplier’s service area at the end of 5, 10, 15, and 20 years, and a description of the actual use of recycled water in comparison to uses previously projected pursuant to this subdivision.
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(f) A description of actions, including financial incentives, which may be taken to encourage the use of recycled water, and the projected results of these actions in terms of acre-feet of recycled water used per year.
(g) A plan for optimizing the use of recycled water in the supplier’s service area, including actions to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate the increased use of treated wastewater that meets recycled water standards, and to overcome any obstacles to achieving that increased use.

Discussion of wastewater collection, treatment, and recycled water use is included in this chapter. Municipal recycled water is municipal wastewater that has been treated at a municipal wastewater facility in a manner specified by the SWRCB-DDW to a specified quality to enable it to be used again for a beneficial purpose. Municipal wastewater must meet two requirements; it must be reused beneficially pursuant to Title 22 of the California Code of Regulations and it must be reused in accordance with a Regional Water Quality Control Board permit. Title 22 of the California Code of Regulations defines beneficial reuse of recycled water as “...the use of recycled water that has been transported from the point of treatment or production to the point of use without an intervening discharge to water of the State....”
The City currently does not have access to recycled water supplies due to the lack of infrastructure to convey recycled water to the City. Subject to availability of recycled water, the City would have to construct transmission and distribution facilities to deliver recycled water to customers within its service area. Additional information regarding the potential use of recycled water is provided below.
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6.2.5.1 RECYCLED WATER COORDINATION
CWC 10633.

The plan shall provide, to the extent available, information on recycled water and its potential for use as a water source in the service area of the urban water supplier. The preparation of the plan shall be coordinated with local water, wastewater, groundwater, and planning agencies that operate within the supplier’s service area…
The City’s 2025 UWMP was prepared in coordination with local water, wastewater, groundwater, and planning agencies within its service area to analyze the current and projected wastewater supply for collection, treatment, disposal, and distribution. The City does not have access to recycled water due to the lack of infrastructure to convey recycled water supplies to the City. However, the City has coordinated the potential for deliveries of recycled water to the City’s service area with SGVMWD. In addition, SGVMWD prepared the “San Gabriel Valley Regional Recycled Water Supply Program Feasibility Study”, dated December 2017, which estimated the potential volumes of recycled water which could be supplied to the City, and the necessary infrastructure which would need to be developed. The Feasibility Study identified the potential for using recycled water within the City’s service area for groundwater replenishment purposes.

However, the potential recycled water spreading project would require the construction of a membrane bioreactor scalping plant and conveyance pipelines which would be cost prohibitive.

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6.2.5.2 WASTEWATER COLLECTION, TREATMENT, AND DISPOSAL
CWC 10633.
(a) A description of the wastewater collection and treatment systems in the supplier’s service area, including a quantification of the amount of wastewater collected and treated and the methods of wastewater disposal.

Wastewater generated by the City is treated by the Sanitation Districts of Los Angeles County (LACSD). Wastewater is collected within the City’s local sewer collection system.

The City’s local sewers tie into one of LACSD’s regional trunk sewers. The regional trunk sewer lines deliver wastewater to one or more water reclamation plants owned by LACSD for treatment. The water reclamation plants are not located within the City’s service area.

The water reclamation plants serving the City include the Whittier Narrows Water Reclamation Plant (WNWRP) and the A.K. Warren Water Resource Facility (formerly known as the (Joint Water Pollution Control Plant); however, the percentage breakdown between these two plants in treating the City’s wastewater is unknown (although a majority of the wastewater from the City is treated at the WNWRP). LACSD estimates approximately 69 gallons per person per day of wastewater is generated within LACSD’s service area. Based on a 2025 population of 10,878 within the City, the estimated amount of wastewater collected by the City is approximately 840 AFY, as shown in Table 6-2. As indicated previously, and in Table 6-3, wastewater is not treated or disposed within the City’s service area.

The Whittier Narrows Water Reclamation Plant, which began operation in 1962, was the first reclamation plant built by the LACSD. It has a treatment capacity of about 15 MGD and provides coagulated, filtered and disinfected tertiary effluent. The method of disposal when treated recycled water that is not used (non-recycled) is discharge to the San Gabriel River/Rio Hondo and eventually flows to the ocean. 2025 Urban Water Management Plan

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The A.K. Warren Water Resource Facility, which began operation in 1928 in the City of Carson, currently has a treatment capacity of about 400 MGD. The treatment level is primary and secondary treatment with disinfection. The plant serves a population of approximately 4.8 million people. Solids collected in primary and secondary treatment are processed in anaerobic digestion tanks where bacteria break down organic material and produce methane gas. Treated wastewater is ultimately disinfected prior to being discharged to the Pacific Ocean. All water discharged to the ocean is monitored to ensure compliance with applicable local, state, and federal standards for discharge water.

6.2.5.3 RECYCLED WATER SYSTEM DESCRIPTION
CWC 10633.
(c) A description of the recycled water currently being used in the supplier’s service area, including, but not limited to, the type, place, and quantity of use.

The City does not have access to recycled water due to the lack of recycled water supplies and infrastructure to convey recycled water supplies to the City. Subject to the availability of recycled water, the City would consider transmission and distribution facilities to deliver recycled water to customers within its service area.

6.2.5.4 CURRENT, POTENTIAL, AND PROJECTED RECYCLED

WATER USES
CWC 10633.
(b) A description of the recycled water currently being used in the supplier’s service area, including, but not limited to, the type, place, and quantity of use. A description of the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project. 2025 Urban Water Management Plan

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(d) A description and quantification of the potential uses of recycled water, including, but not limited to, agricultural irrigation, landscape irrigation, wildlife habitat enhancement, wetlands, industrial reuse, groundwater recharge, indirect potable reuse, and other appropriate uses, and a determination with regard to the technical and economic feasibility of serving those uses.
(e) The projected use of recycled water within the supplier’s service area at the end of 5, 10, 15, and 20 years, and a description of the actual use of recycled water in comparison to uses previously projected pursuant to this subdivision.

Although the City has identified potential uses for recycled water, the City does not anticipate it will have access to recycled water supplies over the next 25 years due to the lack of infrastructure to convey recycled water to the City. Therefore, Table 6-4 and Table 6-5 are intentionally blank. The largest potential use of recycled water in the City would be for groundwater recharge. As discussed above, SGVMWD prepared the “San Gabriel Valley Regional Recycled Water Supply Program Feasibility Study”, dated December 2017, which estimated the potential volumes of recycled water which could be supplied to the City, and the necessary infrastructure which would need to be developed. The Feasibility Study identified the potential for using recycled water within the City’s service area for groundwater replenishment purposes. However, the potential recycled water spreading project would require the construction of a membrane bioreactor scalping plant and conveyance pipelines which would be cost prohibitive.

6.2.5.5 ACTIONS TO ENCOURAGE AND OPTIMIZE FUTURE

RECYCLED WATER USE
CWC 10633.

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facilitate the increased use of treated wastewater that meets recycled water standards, and to overcome any obstacles to achieving that increased use.

Recycled water is not currently used within the City, and no future projects have been identified with recycled use estimates. There are currently no actions in place at the time by which the City is able to encourage the use of recycled water to their customers.

Therefore, Table 6-6 is left intentionally blank.

DESALINATED WATER OPPORTUNITIES
CWC 10631.
(g) Describe the opportunities for development of desalinated water, including, but not limited to, ocean water, brackish water, and groundwater, as a long-term supply.

Raymond Basin
The City pumps groundwater from the Raymond Basin which is low in TDS and does not require desalination. The SWRCB-DDW recommended level is 500 milligrams per liter (mg/L) and water can be provided for long-term domestic use with TDS concentrations of up to 1,000 mg/L. Recent water quality data indicates the TDS values for the City’s groundwater wells are less than 500 mg/L. Due to the low TDS concentration of the groundwater from the Raymond Basin, the City does not need to investigate the use of desalination as a long-term supply. The City is currently not considering the development of a desalinated water project. However, there may be opportunities for use of desalinated ocean water as a potential water supply source in the future, through coordination with other agencies that have ocean desalination programs.
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WATER EXCHANGES AND TRANSFERS
CWC 10631.
(c) Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis.

6.2.7.1 EXCHANGES
Pursuant to DWR’s 2025 Final Guidebook, “Water exchanges are typically water delivered by one water user to another water user, with the receiving water user providing water in return at a specified time or when the conditions of the parties’ agreement are met. Water exchanges can be strictly a return of water on a basis agreed upon by the participants or it can include payment and the return of water.” As the result of an exchange between SGVMWD and MWD, the City can purchase treated, imported water from SGVMWD through MWD. SGVMWD coordinated with MWD to construct an emergency connection in 2012 for the City to received treated imported water which initially was delivered to the City’s distribution system. The capacity of the connection is approximately 2,500 gpm. Beginning in 2015, the City began delivering the treated imported water to the Sierra Madre Spreading Grounds for the purposes of groundwater replenishment. The imported water spread is used as a credit to supplement the City’s water production rights in the Raymond Basin. The City replenishes up to 1,500 of 2,500 AF of imported water per year.

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6.2.7.2 TRANSFERS
Pursuant to DWR’s 2025 Final Guidebook, “The Water Code defines a water transfer as a temporary or long-term change in the point of diversion, place of use, or purpose of use due to a transfer, sale, lease, or exchange of water or water rights.” As a Party to the Main Basin Judgment, the City can pump from the Main Basin. The Main Basin Judgment does not restrict the quantity of groundwater that can be produced, but provides for a Replacement Water assessment for production in excess of water rights. In addition, the City has entered into a Cyclic Storage agreement, described in Chapter 6.2.2, with the Main Basin Watermaster to store imported water in the Main Basin for a period of up to five years to be used to offset a future Replacement Water requirement.

6.2.7.3 EMERGENCY INTERTIES
The City has emergency interties (or interconnections) with other water agencies that serve as short-term emergency water supplies. Emergency interconnections are distribution system interconnections between water agencies for use during critical situations where one system or the other is temporarily unable to provide sufficient potable water to meet its water demands and/or fire protection needs. An emergency interconnection will allow a water system to continue serving water during critical situations such as local water supply shortages as a result of earthquakes, fires, prolonged power outages, and droughts.

The City has the ability to receive water from interconnections with the following water agencies:
 City of Pasadena (two way)
 City of Arcadia
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SUPPLY FROM STORAGE
Section 6.2.8 is not applicable. The City does not remove water from either surface storage or underground storage for use (including surface water placed into storage in a given year and retrieved in the following year).

OTHER
The City does not rely on any additional water supply sources.

FUTURE WATER PROJECTS
CWC 10631.
(f) Include a description of all water supply projects and water supply programs that may be undertaken by the urban water supplier to meet the total projected water use, as established pursuant to subdivision (a) of Section 10635. The urban water supplier shall include a detailed description of expected future projects and programs that the urban water supplier may implement to increase the amount of the water supply available to the urban water supplier in normal and single-dry water years and for a period of drought lasting five consecutive water years. The description shall identify specific projects and include a description of the increase in water supply that is expected to be available from each project. The description shall include an estimate with regard to the implementation timeline for each project or program.

The City’s future water projects are primarily focused on local groundwater supplies. The following is a list of the City’s future water supply projects:

Construction of a Main Basin Well and Transmission Pipeline In partnership with the City of Arcadia, the City is developing a new joint well project (Goldring Well) located at the Arcadia Public Works Services Department property. This project is expected to yield over 2,000 gpm (with 1,000 gpm going to the City of Sierra 2025 Urban Water Management Plan

City of Sierra Madre Page 6-48
Madre) from the Main Basin. The City is also constructing an appurtenant pipeline to the City. The project is estimated to be completed by 2027.

Rehabilitation of Groundwater Wells
The City rehabilitates its groundwater wells as necessary in an ongoing process to improve groundwater production. Rehabilitation will also extend the life of the wells, provide higher pumping efficiencies, and control sanding issues. The City plans to rehabilitate Wells 3 and 4 over the next several years.

ENERGY USE
CWC 10631.2.
(a) In addition to the requirements of Section 10631, an urban water management plan shall include any of the following information that the urban water supplier can readily obtain:
(1) An estimate of the amount of energy used to extract or divert water supplies. (2) An estimate of the amount of energy used to convey water supplies to the water treatment plants or distribution systems.
(3) An estimate of the amount of energy used to treat water supplies. (4) An estimate of the amount of energy used to distribute water supplies through its distribution systems.
(5) An estimate of the amount of energy used for treated water supplies in comparison to the amount used for nontreated water supplies.
(6) An estimate of the amount of energy used to place water into or withdraw from storage. (7) Any other energy-related information the urban water supplier deems appropriate. “Energy intensity” is defined as the quantity of energy consumed, measured in kilowatt hours (kWh), divided by the volume of water, measured in AF for a water management 2025 Urban Water Management Plan

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process over a one-year period. The information used to calculate the estimated energy intensity associated with the City’s water system is provided below. The energy intensity information is based on readily obtainable energy and water use data for the following water management processes: 1) extraction or diversion of water supplies; 2) placement into storage; 3) conveyance to distribution; 4) treatment; and 5) water system distribution.

The City has tabulated its energy intensity using readily obtainable energy consumption data obtained from monthly electricity bills from Southern California Edison (SCE) for the whole water system and the corresponding water use data obtained from available water meter readings. The City has reported the energy intensity associated with the water management processes which occur within its operational control. Because the City does not track individual energy usage for each water management process identified above, the City has estimated the energy intensity using the “total utility approach” (i.e. sum of all water management processes). The total energy consumed was approximately 3,356,522 kWh during FY 2024-25. Although the total energy consumption reported includes electricity usage for general administration (e.g. at the City’s headquarters) which is not associated with any water management processes, the general administration energy usage is considered negligible compared to overall water system use and has not been netted out.

The total volume of water entering the potable water system was approximately 2,461 AF during FY 2024-25 and is consistent with the total volume of water provided in Table 4-1.

The total energy intensity associated with the City’s water management processes is estimated at 4,186 kWh per million gallons. The energy intensity data and calculations based on the “total utility approach” are provided in Table O-1B below.

The City’s water management processes do not include “consequential hydropower generation” where the energy generation is a direct consequence of water delivery (i.e. all water passing through the energy generation devices is delivered to users). The City’s water management processes do not include “non-consequential hydropower generation” 2025 Urban Water Management Plan

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where the energy generation is not a direct consequence of water delivery (i.e. energy could be generated even if no water was being delivered to water users). In addition, the City’s water management processes do not include any substantial “self-generated energy sources” including solar, wind, geothermal, biomass, co-generation, and diesel generator sources.

Table O-1B. Recommended Energy Reporting — Total Utility Approach Water Delivery Product
drop down list
(If delivering more than one type of product recommend
using Table O-1C)
Retail Potable
Deliveries
Start Date of Reporting Period 7/1/2024
End Date of Reporting Period 6/30/2025
Is upstream embedded energy in the values reported? No
Units of Measure for Water AF Total Utility
See DWR NOTES Hydropower Net Utility
2,461 2,461
3,356,522 3,356,522
- 4,186 4,186
Quantity of Self-Generated Renewable Energy
0 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Combination of Estimates and Metered Data
Data Quality Narrative:

Narrative:

Optional Submittal Table O-1B: Recommended Energy Reporting - SINGLE DELIVERY PRODUCT - TOTAL UTILITY

APPROACH
The total energy consumed was identified based on Southern California Edison (SCE) billing records. Although the total energy consumed includes electricity usage for general administration (which is not an identified water management process), general administration energy use is considered to be negligible compared to overall water system use and has not been netted out.

Only for Water Delivery Products Under the Urban Water Supplier's Operational Control
Sum of All Water
Management Processes Non-Consequential Hydropower
DWR NOTES:

Total Utility:The volume of water entered in the “Total Utility” column should equal the volume of water entering the distribution system (excluding recycled water); in most cases, this is the total volume calculated in UWMP Table 4-1: 2025 Actual Total Uses for Potable and Non-Potable Water. Note if recycled water is included in your Submittal Table 4-1, you must exclude it from your volume in this table.

NOTES:

Volume of Water Entering Process
Energy Consumed (kWh)
Energy Intensity (kWh/vol. converted to MG)
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SUBMITTAL TABLES
The applicable standardized Submittal Tables referenced within Chapter 6 are provided below.

TABLE 6-1: GROUNDWATER VOLUME PUMPED
Table 6-1 Groundwater Volume Pumped

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TABLE 6-2: WASTEWATER COLLECTED WITHIN SERVICE
AREA
Table 6-2 Wastewater Collected Within Service Area

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TABLE 6-3: WASTEWATER TREATMENT AND OUTCOMES

WITHIN UWMP SERVICE AREA
Table 6-3 Wastewater Treatment and Outcomes Within UWMP Service Area

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TABLE 6-4: RECYCLED WATER DIRECT BENEFICIAL USES

WITHIN SERVICE AREA
Table 6-4 Recycled Water Direct Beneficial Uses Within Service Area

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TABLE 6-5: 2020 UWMP RECYCLED WATER-USE
PROJECTION COMPARED TO 2025 ACTUAL
Table 6-5 2020 UWMP Recycled Water-Use Projection Compared to 2025 Actual 2025 Urban Water Management Plan

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TABLE 6-6: METHODS TO ENCOURAGE FUTURE RECYCLED

WATER USE
Table 6-6 Methods to Encourage Future Recycled Water Use

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TABLE 6-7: EXPECTED FUTURE WATER SUPPLY PROJECTS

OR PROGRAMS
Table 6-7 Expected Future Water Supply Projects or Programs TABLE 6-8: WATER SUPPLIES—ACTUAL
As discussed in Section 6.2, the City’s water supply sources consist of treated imported water purchased from SGVMWD through Metropolitan Water District of Southern California (see Section 6.2.1) groundwater from the Raymond and Main Basins (see Section 6.2.2), and local groundwater from the West Tunnel (see Section 6.2.2). The actual quantities of the water supply sources available to the City during FY 2024-25 are summarized in Table 6-8. The reliable quantities of projected water supply sources 2025 Urban Water Management Plan

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available to the City in five-year increments through FY 2049-50 during normal or average years are summarized in Table 6-9. The reliability of these sources of supply are addressed in Section 7.2.3, including during normal years, single dry years, and five consecutive year droughts.

The order of use of the City’s projected reliable water supplies from FY 2024-25 through FY 2049-50 in five-year increments is based on historical practices, water supply availability, and the cost of water. It is anticipated the City will initially use groundwater produced from the Raymond Basin. The City will then use groundwater produced from the Main Basin. It is important to note that the Main Basin is adjudicated (as discussed in Section 6.2.2) and that there is no limit to the amount of groundwater which can be produced annually.

The City’s projected quantities of groundwater supplies from Raymond Basin are based on meeting a portion of the City’s total water demands. In the near term, the City’s projected quantities of treated imported water supplies and/or local surface water supplies are based on meeting the remainder of the City’s demands based on historical long-term averages and available supplies during previous dry year conditions. In the future the City will also produce groundwater from the Main Basin. Consequently, it is anticipated the City will have sufficient water supplies available to meet projected demands. 2025 Urban Water Management Plan

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Table 6-8 Water Supplies— Actual
OPTIONAL TABLE 6-8DS: SOURCE DESALINATION BY

SUPPLIER
As discussed in Section 6.2.6, the City is currently not considering the development of a desalinated water project. As a result, optional Table 6-8DS is not included.

Water Supply
Drop down list
May use each category multiple
times. These are the only water
supply categories that will be
recognized by the WUEdata online
submittal tool
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Actual Volume
(AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Groundwater (not desalinated) Raymond Basin Potable 2,461 Groundwater (not desalinated) West Tunnel Potable 0
2,461 0
00 2,461 0
Submittal Table 6-8 Retail: Water Supplies — Actual
Water Code Section 10631(b)
2025
NOTES:

DWR NOTES:

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

Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.

Add additional rows as needed
Total
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)
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TABLE 6-9: WATER SUPPLIES—PROJECTED
Table 6-9 Water Supplies—Projected
Water Supply
Reasonably
Available
Volume
(AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume
(AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Groundwater (not
desalinated)
Raymond
Basin Potable 916 920 932 943 955
Groundwater (not
desalinated)
West
Tunnel Potable 0 0 0 0 0
Groundwater (not
desalinated) Main Basin Potable 1,600 1,600 1,600 1,600 1,600 2,516 0 2,520 0 2,532 0 2,543 0 2,555 0
00 0 000 0 0 0 0
2,516 0 2,520 0 2,532 0 2,543 0 2,555 0
2050 (opt)
Add additional rows as needed
Total
NOTES:
2030 2035 2040 2045
Subtotal Non-Potable
Subtotal Potable
DWR NOTES:

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

Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.

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CHAPTER 7

WATER SERVICE RELIABILITY AND DROUGHT RISK ASSESSMENT
LAY DESCRIPTION – CHAPTER 7

WATER SERVICE RELIABILITY AND DROUGHT RISK ASSESSMENT
Chapter 7 (Water Service Reliability and Drought Risk Assessment) of the City’s 2025 Plan discusses and provides the following:
 FY 2019-20 represents an “average” or “normal” water year for the City in which the total amount of rainfall was similar to the historical average rainfall.  A “single dry” year for the City was represented in FY 2017-18, in which the total amount of rainfall was below the historical average rainfall.  A “five consecutive year drought” period for the City is represented from FY 2011- 12 to FY 2015-16, where the total amount of rainfall during each of these years was less than the historical average rainfall.
 The City’s current and projected water supplies available during normal years in five-year increments over the next 25 years are provided (through Fiscal Year 2049-50) as shown on Table 7-2.
 The City’s current and projected water supplies available during single dry years in five-year increments over the next 25 years are provided (through Fiscal Year 2049-50) as shown on Table 7-3.
 The City’s current and projected water supplies available during each year of a five consecutive year drought in five-year increments over the next 25 years are provided (through Fiscal Year 2049-50) as shown on Table 7-4.  The reliability of the City’s water supply sources, including a review of water supply constraints, is provided. A single dry year or a five consecutive year drought period 2025 Urban Water Management Plan

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will not compromise the City’s ability to provide a reliable supply of water to its customers.
 A Drought Risk Assessment is provided which includes an assessment of the City’s water supply reliability over a five consecutive year drought period. The City’s Drought Risk Assessment assumes a five consecutive year drought from FY 2025-26 through FY 2029-30 and includes a review of water supplies, water uses, and water supply reliability for each water supply source during this period.

The City’s water system has experienced a prior five consecutive year drought with no limitation to its collective water supplies. However, the cost of those water supplies may have increased based on the mix of water supplies which are used.

Consequently, the City has the ability to enact varying water shortage levels (see Chapter 8) to help educate its customers and provide an economic incentive for the retail customers to reduce their water consumption.

CONSTRAINTS ON WATER SOURCES CONSIDERATIONS
CWC 10631.
(b)(1) A detailed discussion of anticipated supply availability under a normal water year, single dry year, and droughts lasting at least five years, as well as more frequent and severe periods of drought, as described in the drought risk assessment. For each source of water supply, consider any information pertinent to the reliability analysis conducted pursuant to Section 10635, including changes in supply due to climate change.

Water Code Section 10634
The plan shall include information, to the extent practicable, relating to the quality of existing sources of water available to the supplier over the same five-year increments as described in subdivision (a) of Section 10631, and the manner in which water quality affects water management strategies and supply reliability.

Water Code Section 10635
(b)(2) A determination of the reliability of each source of supply under a variety of water shortage conditions. This may include a determination that a particular source of water supply is fully reliable under most, if not all, conditions.
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Water Code Section 10635
(b)(4) Considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.

This section of the City’s UWMP describes the City’s ability to meet retail customer water demands by analyzing a variety of factors which affect the City’s water supply. This section assesses the City’s water service reliability during average years, single dry years, and during a five consecutive year drought period to meet the water needs of its customers. This section also includes the discussion of a Drought Risk Assessment which provides a mechanism for the City to evaluate the risk to its water supply under a drought lasting for the next five consecutive years.

SERVICE RELIABILTY - CONSTRAINTS ON WATER SOURCES
The City’s sources of supplies include groundwater pumped from the Raymond Basin, treated imported replenishment water purchased from SGVMWD through MWD, and local groundwater from the West Tunnel of the Little Santa Anita Canyon, and future supplies from the Main Basin, as described in Section 6.2. Although all of these supplies are managed, the following constraints may occur which the City has considered in this reliability analysis.

Imported water
The City currently receives treated imported replenishment water from SGVMWD through MWD. Water quality from MWD relating to supply reliability is addressed separately in MWD’s 2025 Regional Urban Water Management Plan. In the future, the City will receive imported water from SGVMWD delivered to the Main Basin. Water quality from SGVMWD 2025 Urban Water Management Plan

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relating to supply reliability is addressed separately in SGVMWD’s 2025 Urban Water Management Plan.

Groundwater
The City produces groundwater from the Raymond Basin. The groundwater in the vicinity of the City’s wells have been impacted by contamination. However, the City has developed and implemented appropriate treatment (blending and/or treatment facilities) which have been approved by SWRCB-DDW. These groundwater supplies are considered reliable both from a water quality and quantity standpoint.

As discuss in Section 6.2.10, City is currently developing a new well (Goldring Well) with the City of Arcadia and plans to produce groundwater from the Main Basin.

WATER SERVICE RELIABILITY ASSESSMENT
CWC 10635.
(a) Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five-year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years. The water service reliability assessment shall be based upon the information compiled pursuant to Section 10631, including available data from state, regional, or local agency population projections within the service area of the urban water supplier.

Information regarding the reliability of the City’s water supplies is based on the historical precipitation data in the San Gabriel Valley. Historical annual precipitation in the San Gabriel Valley is discussed in Section 3.3 and is based on historical data collected from Station 046719 (Pasadena, CA). Furthermore, Section 4.2.5.6 of this Plan notes that 2025 Urban Water Management Plan

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potential future climate change impacts may result in an increase in the average annual precipitation within the City’s service area, thus indicating use of historical data is a reasonable and conservative approach. As indicated in Section 3.3, the historical average rainfall in the vicinity of the City’s service area is 19.9 inches. FY 2019-20 represents an average or normal water year for the City in which the total amount of rainfall was similar to the historical average rainfall. A single dry year for the City was represented in FY 2017-18, in which the total amount of rainfall was below the historical average rainfall. A five consecutive year drought period for the City is represented from FY 2011-12 to FY 2015-16, where the total amount of rainfall during each of these years was less than the historical average rainfall. Table 7-1 summarizes these “base years” for average, single dry, and five consecutive year drought and provides the total amount of water supplies available to the City during those base years. The following discussion assesses the water service reliability of the City’s water supply sources.

Water Service Reliability - Imported Water
The City’s treated imported water supplies from SGVMWD (including through MWD) may potentially be impacted during a multi-year drought or other conditions which may limit SGVMWD from delivering sufficient water supplies to all of its sub-agencies. As discussed in Section 6.2.8, the City is developing a well in the Main Basin, which will eliminate the need to deliver treated imported water to replenish the Raymond Basin. The City has a cyclic storage account with the Main Basin Watermaster which allows imported water to be stored in anticipation of future use when imported water may not be available.

Water Service Reliability - Groundwater

Raymond Basin
The Raymond Basin groundwater supplies are managed by the Raymond Basin Watermaster, as discussed in Section 6.2.2. During a normal year (FY 2019-20), the City 2025 Urban Water Management Plan

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met about 100 percent of its total demands with supplies from the Raymond Basin. During a single dry year (FY 2017-18), the City met about 100 percent of its total demands with supplies from the Raymond Basin. During a five consecutive dry year period (FY 2011- 12 to FY 2015-16), the City met up to 95 percent of its total demands with supplies from the Raymond Basin
Main Basin
The Main Basin groundwater supplies are managed by the Main Basin Watermaster, as discussed in Section 6.2.2. As discussed in Chapter 6, the City is developing a well in the Main Basin which will eliminate the need to deliver treated imported water to replenish the Raymond Basin.

Tunnel Water
The City obtains local groundwater supplies through the tunnel sources, as discussed in Section 6.2.2. During a normal year (FY 2019-20), the City met less than 1 percent of its total demands with supplies from tunnel sources. During a single dry year (FY 2017-18), the City met less than 1 percent of its total demands with supplies from tunnel sources.

During a five consecutive year drought multiple dry year period (FY 2011-12 to FY 2015- 16), the City met between 0 and 10 percent of its total demands with supplies from tunnel sources.

Water Service Reliability Summary
Table 7-1 shows the water supplies during the base years (for average year, single dry year and a five consecutive year drought). As a result of the City’s diverse water supply portfolio, water supplies may be re-apportioned during a five consecutive year drought to meet the City’s water demands.
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WSRA YEAR-TYPE CHARACTERIZATION

7.2.1.1 TYPES OF YEARS
The City’s base years for an average year, a single dry year, and a five consecutive year drought are discussed in Section 7.2 and are summarized in Table 7-1. As indicated in Chapter 6, the City’s water supplies sources have been sufficient in meeting the City’s historical water demands during an average year, a single dry year, and a five consecutive year drought. An average year was based on a historical year during the past 15 years with a total precipitation similar to the historical average precipitation in the vicinity of the City’s service area. Because a single dry year or a five consecutive year drought period will not compromise the City’s ability to provide a reliable supply of water to its customers, a single dry year in this Plan was selected based on one of the driest years during the past 15 years. The five consecutive year drought period was based on a period of five consecutive dry years during the past 15 years.

As indicated in Section 3.3, the historical average rainfall in the vicinity of the City’s service area is 19.9 inches. FY 2019-20 represents an average or normal water year for the City in which the total amount of rainfall was similar to the historical average rainfall. A single dry year for the City was represented in FY 2017-18, in which the total amount of rainfall was less than the historical average rainfall. A five consecutive year drought period for the City is represented from FY 2011-12 to FY 2015-16, where the total amount of rainfall during each of these years was less than the historical average rainfall. Table 7-1 summarizes these “base years” for an average year, a single dry year and a five consecutive year drought period and provides the total amount of water supplies available to the City during those base years.
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7.2.1.2 SOURCES FOR WATER DATA
The monthly historical average temperatures (including minimum and maximum), monthly historical average rainfall, and monthly evapotranspiration in the vicinity of the City’s service area are discussed in Section 3.3. Historical climate information was obtained from the WRCC, DPW, and from DWR’s CIMIS.

WSRA SUPPLY AND DEMAND COMPARISON
CWC 10635.
(a) Every urban water supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the long-term total projected water use over the next 20 years, in five-year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years. The water service reliability assessment shall be based upon the information compiled pursuant to Section 10631, including available data from state, regional, or local agency population projections within the service area of the urban water supplier.

The City obtains its water supply from groundwater wells located in the Raymond Basin and in the future from the Main Basin. As discussed in Section 7.3 and shown in Table 7- 2, Table 7-3, and Table 7-4, each of the City’s water supply sources share the same base years. As previously discussed in Section 7.2.1, a single dry year or a five consecutive year drought period will not compromise the City’s ability to provide a reliable supply of water to its customers.

The City’s projected normal year water demands over the next 25 years are discussed in Section 4.2.6. The ratio of total water supplies (including potable water supplies) available to the City during a historical average year in FY 2019-20 (or 2,392 AF) and during a historical single dry year in FY 2017-18 (or 2,241 AF) was used to estimate the City’s 2025 Urban Water Management Plan

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projected water demands during single dry years. The ratio of total water supplies available to the City during a historical average year in FY 2019-20 (or 2,392 AF) and a historical a five consecutive year drought period from FY 2011-12 to FY 2015-16 (or 2,686 AF, 2,841 AF, 2,499 AF, 2,125 AF, 2,211 AF, respectively) was used to estimate the City’s projected water demands during a five consecutive year drought period. The City’s projected dry year water supplies over the next 25 years were based on the minimum supplies needed by the City to meet projected single-dry year demands. Table 7-2, Table 7-3, and Table 7-4 summarize the City’s projected water demands and supplies over the next 25 years in five-year increments, including during normal years, single dry years, and a five consecutive year drought periods. These tables indicate the City can meet water demands during normal years, single dry years, and a five consecutive year drought periods over the next 25 years.

7.2.2.1 NORMAL YEAR
Table 7-2 summarizes the City’s projected water demands and supplies over the next 25 years in five-year increments during normal years. Table 7-2 indicates the City can meet water demands during normal years over the next 25 years.

7.2.2.2 SINGLE DRY YEAR
Table 7-3 summarizes the City’s projected water demands and supplies over the next 25 years in five-year increments during single dry years. Table 7-3 indicates the City can meet water demands during single dry years over the next 25 years.

7.2.2.3 FIVE CONSECUTIVE DRY YEARS
Table 7-4 summarizes the City’s projected water demands and supplies over the next 25 years in five-year increments during five consecutive year drought periods. Table 7-4 2025 Urban Water Management Plan

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indicates the City can meet water demands during five consecutive year drought periods over the next 25 years.

WSRA DESCRIPTION OF MANAGEMENT TOOLS AND

OPTIONS
Raymond Basin
As noted in Section 6.2.2, the Raymond Basin is managed by the Raymond Basin Management Board. During the period of management under the Judgment, significant drought events have occurred. In each drought cycle the Raymond Basin has been managed to maintain water levels. Therefore, based on historical and on-going management practices, the City will be able to rely on the Raymond Basin for adequate supply over the next 25 years under single dry years and a five consecutive year drought periods.

Section 6.2.2 provides a description of the management of groundwater resources in the Raymond Basin, as well as information on basin management. Chapter 6 also demonstrates the management structure of the Raymond Basin provides a reliable source of groundwater supply for the City during a normal year, a single-dry year and a five consecutive year drought. Historical data indicates the Raymond Basin has been well managed for the full period of the adjudication, resulting in a stable and reliable water supply. Basin management changes are discussed in Section 6.2.2 in order to reduce the need to import water from other regions. Therefore, the groundwater supplies in the Raymond Basin are deemed reliable.
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Main Basin
As noted in Section 6.2.2, the Main Basin is managed by the Main Basin Watermaster.

During the period of management under the Judgment, significant drought events have occurred. In each drought cycle the Main Basin has been managed to maintain water levels. Therefore, based on historical and on-going management practices, the City will be able to rely on the Main Basin for adequate supply over the next 25 years under single dry years and a five consecutive year drought periods.

Section 6.2.2 provides a description of the management of groundwater resources in the Main Basin, as well as information on basin management. Chapter 6 also demonstrates the management structure of the Main Basin provides a reliable source of groundwater supply for the City during a normal year, a single-dry year and a five consecutive year drought. Historical data indicates the Main Basin has been well managed for the full period of the adjudication, resulting in a stable and reliable water supply. Basin management changes are discussed in Section 6.2.2 in order to reduce the need to import water from other regions. Therefore, the groundwater supplies in the Main Basin are deemed reliable.

DROUGHT RISK ASSESSMENT
CWC 10612.
“Drought Risk Assessment” means a method that examines water shortage risks based on the driest five-year historic sequence for the agency’s water supply, as described in subdivision (b) of Section 10635.

CWC 10635.
(b) Every urban water supplier shall include, as part of its urban water management plan, a drought risk assessment for its water service to its customers as part of information considered in developing the demand management measures and water supply projects and programs to be included in the urban water management plan. The urban water supplier may conduct an interim update or updates to this drought risk assessment within the five-year cycle of its 2025 Urban Water Management Plan

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urban water management plan update. The drought risk assessment shall include each of the following:
(1) A description of the data, methodology, and basis for one or more supply shortage conditions that are necessary to conduct a drought risk assessment for a drought period that lasts five consecutive water years, starting from the year following when the assessment is conducted.
(2) A determination of the reliability of each source of supply under a variety of water shortage conditions. This may include a determination that a particular source of water supply is fully reliable under most, if not all, conditions.
(3) A comparison of the total water supply sources available to the water supplier with the total projected water use for the drought period.
(4) Considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.

The City’s sources of supplies consist of groundwater from the Raymond Basin (which is managed by the Raymond Basin Management Board), treated import water purchased through the Metropolitan Water District of Southern California, local groundwater from the West Tunnel of the Little San Anita Canyon and in the future, groundwater from the Main Basin. The following discussion provides a Drought Risk Assessment (DRA) which assesses the City’s water supply reliability over a five consecutive year drought period.

The City’s DRA incorporates a five consecutive year drought from FY 2025-26 through FY 2029-30 and includes a review of water supplies, water uses, and water supply reliability.

DRA DATA, METHODS, AND BASIS FOR WATER SHORTAGE

CONDITIONS
The City’s DRA was prepared using historical production data from the City’s water supply sources. The following assumptions were considered during the preparation of the City’s DRA for each year of the five consecutive year drought. 2025 Urban Water Management Plan

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 The five consecutive year drought period associated with the 2025 Plan is based on five consecutive dry years from FY 2025-26 through FY 2029-30.  The projected water supplies available during each year of this five consecutive year drought are assumed to be identical to the water supplies produced during each year between FY 2011-12 and FY 2015-16 (which represents the most recent and historical five consecutive year drought).
 The projected demands during this five consecutive year drought are based on water demands from FY 2019-20 (a normal year) which were adjusted based on projected population over the next five years along with the ratio of the normal year demands to actual demands over each year of the most recent and historical five consecutive year drought period (from FY 2011-12 and FY 2015-16).  The projected demands were compared to the projected supplies to identify potential water supply deficits which may require implementation of the Water Shortage Contingency Plan (discussed further in Chapter 8).

The following hypothetical methodologies were considered during the preparation of the City’s DRA during for each year of the five consecutive year drought:
 Drought Year 1: The region had experienced an average to above average year of precipitation in the prior year. Water use in the prior year had been below average due to a reduce need for outdoor water use, the groundwater basin had been replenished from above average local stormwater runoff, and imported water supplies were not restricted.
 Drought Year 2: The region experienced a second year of below average precipitation and runoff. Retail customers increase water use for outdoor irrigation to compensate for lack of precipitation. Groundwater and imported water supplies have not been impacted.
 Drought Year 3: The region experienced a third year of below average precipitation and runoff. Retail customers increase water use for outdoor irrigation to 2025 Urban Water Management Plan

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compensate for lack of precipitation. Groundwater and imported water supplies have not been impacted. However, there is an increased demand on both groundwater and treated imported water.
 Drought Year 4: The region experienced a fourth year of below average precipitation and runoff. Groundwater supplies have not been impacted. However, there is an increased demand on groundwater.
 Drought Year 5: Fifth year of below average precipitation and runoff. Groundwater supplies have not been impacted. However, there is an increased demand on groundwater.

DRA INDIVIDUAL WATER SOURCE RELIABILITY
The City’s DRA incorporates a five consecutive year drought based on five consecutive dry years commencing in FY 2025-26. The quantity of water supplies available for each year during this five consecutive year drought period included in the City’s DRA is assumed to be the same as the quantity of water supplies produced by the City (i.e. demands) during the most recent and historical five consecutive year drought which occurred from FY 2011-12 through FY 2015-16. Production data for those years have been tabulated in Section 6.1. The following describes the anticipated reliability of each water source for each year of the five consecutive year drought based on recent experience.

Groundwater
The City produces groundwater supplies from the Raymond Basin which is actively managed by the Raymond Basin Management Board, as described in Section 6.2.2. The Raymond Basin is adjudicated; however, the City’s water rights are fixed each year.

Consequently, the City cannot produce in excess of its own water rights or rights it may have leased from others. The City has access to water supplies from Raymond Basin 2025 Urban Water Management Plan

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groundwater basin (as well as access to treated imported replenishment water from the Metropolitan Water District of Southern California through SGVMWD for groundwater spreading purposes). In addition, the City has local groundwater supplies available from the West Tunnel of the Little San Anita Canyon. The quantity of groundwater used (and reliably available) during the most recent and historical five consecutive year drought period have been tabulated in Section 6.1. The City manages its water supply portfolio to optimize the water supplies available each year and to avoid a water supply shortage.

The City will produce water supplies from the Main Basin which is actively managed by the Main Basin Watermaster, as described in Section 6.2.2. The Main Basin is adjudicated. Although the City has no water rights, the City’s may produce groundwater in excess of its water rights and pay the applicable assessments to have untreated imported water delivered to replenish the Main Basin.

The City manages its water supply portfolio to optimize the water supplies available each year and to avoid a water supply shortage. The City also had the ability to systematically implement aspects of its Water Shortage Contingency Plan (see Chapter 8). As a result of these collective actions (and experience during prior consecutive five-year droughts), the City does not anticipate a water supply shortage.

Imported Water
The City currently obtains treated imported replenishment water from the Metropolitan Water District of Southern California through SGVMWD. Section 6.2.1 describes the treated imported replenishment water supplies available to the City from SGVMWD. The reliability of SGVMWD’s supplies is also discussed in its 2025 Regional UWMP and is incorporated by reference. The City’s purchases of imported water over the past 15 years have been tabulated in Section 6.1. In the event of a drought which limits imported water supplies, the City will rely on its groundwater production from the Main Basin and will pay 2025 Urban Water Management Plan

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the applicable assessments to purchase untreated imported water to be delivered in the future when supplies are available.

The imported water purchases by the City during the most recent and historical five consecutive year drought period have been tabulated in Section 6.1. Because the City’s DRA assumes the most recent and historical five consecutive year drought scenario will be repeated over the next five years, it is assumed the quantity of imported water supplies purchased during the most recent and historical five consecutive year drought scenario will be available. Furthermore, this constitutes the minimum amount of imported water which may be available in a future five consecutive year drought.

Summary
The City’s water system has experienced a prior five consecutive year drought with no limitation to its collective water supplies. However, the cost of those water supplies may have increased based on the mix of supplies which are used. Consequently, the City has the ability to enact varying Demand Management Measures (see Chapter 9) to help educate its customers and provide an economic incentive for the retail customers to reduce their water consumption.

DRA TOTAL WATER SUPPLY AND USE COMPARISON
Gross water use for the projected five consecutive year drought is shown on Table 7-5.

Section 7.3.2 describes the water source reliability for each source of supply the City will rely on during a five consecutive year drought. The annual quantities are summed and are also provided on Table 7-5. The most important aspect of the City’s water supplies is the groundwater which can be produced from a managed groundwater basin. For the purposes of the City’s DRA, as a worst-case scenario, the City has considered no water supply augmentation (as indicated in Table 7-5) from its groundwater supplies. When necessary, the City can implement various water shortage levels of its Water Shortage 2025 Urban Water Management Plan

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Contingency Plan (as discussed in Chapter 8) in order to reduce its water demands. As shown in Table 7-5, assuming no additional water supply benefits will be available from groundwater supplies, the City can implement various stages of its Water Shortage Contingency Plan to balance water demands with available supplies during each year of the projected five consecutive year drought.

OPTIONAL PLANNING TOOL WORKBOOK
DWR has deemed the “Planning Tool Worksheet” as optional and the City is not required by DWR to use the tool. The City has provided sufficient water supplies to its customers, including during long-term droughts and years with historically high water demands. The City has also been able to provide water service to meet maximum day water demands for these years, including during the summer months. The City plans to obtain the majority of its water supplies from a managed groundwater basin (Main Basin) which is not subject to seasonal fluctuation. Consequently, an evaluation regarding water supplies on a monthly basis was not considered.

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SUBMITTAL TABLES
The applicable standardized Submittal Tables referenced within Chapter 7 are provided below.

OPTIONAL TABLE 7-1: BASIS OF WATER-YEAR DATA (WSRA)
Table 7-1 Basis of Water-Year Data (Reliability Assessment) 2025 Urban Water Management Plan

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TABLE 7-2: NORMAL-YEAR SUPPLY AND USE COMPARISON
Table 7-2 Normal-Year Supply and Use Comparison

2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals
(autofill from Submittal
Table 6-9 R)
2,516 2,520 2,532 2,543 2,555
Use totals
(autofill from Submittal
Table 4-2 R)
2,516 2,520 2,532 2,543 2,555
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised Surplus/(shortfall)
OPTIONAL Planned WSCP Actions
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
NOTES:

DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
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TABLE 7-3: SINGLE-DRY-YEAR SUPPLY AND USE

COMPARISON
Table 7-3 Single-Dry-Year Supply and Use Comparison
Supply totals 2,358 2,361 2,373 2,383 2,394
Use totals 2,358 2,361 2,373 2,383 2,394
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised
Surplus/(shortfall)
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF)
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

NOTES
2050 (AF)
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TABLE 7-4: MULTIPLE DRY YEARS SUPPLY AND USE

COMPARISON
Table 7-4 Multiple Dry Years Supply and Use Comparison

2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals 2,825 2,830 2,843 2,856 2,869
Use totals 2,825 2,830 2,843 2,856 2,869
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,988 2,993 3,007 3,020 3,035
Use totals 2,988 2,993 3,007 3,020 3,035
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,629 2,633 2,645 2,657 2,669
Use totals 2,629 2,633 2,645 2,657 2,669
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,235 2,239 2,249 2,259 2,270
Use totals 2,235 2,239 2,249 2,259 2,270
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,326 2,329 2,340 2,351 2,362
Use totals 2,326 2,329 2,340 2,351 2,362
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
NOTES:

First year
Second year OPTIONAL WSCP Actions
Third year
Fifth year
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

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TABLE 7-5: FIVE-YEAR DROUGHT RISK ASSESSMENT
Table 7-5 Five-Year Drought Risk Assessment
2026 Total
Total Water Use (AF) 2,775
Total Supplies (AF) 2,686
Surplus/Shortfall w/o WSCP Action (89)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 89
Revised Surplus/(shortfall) 0
2027 Total
Total Water Use (AF) 2,949
Total Supplies (AF) 2,841
Surplus/Shortfall w/o WSCP Action (108)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 108
Revised Surplus/(shortfall) 0
2028 Total
Total Water Use (AF) 2,605
Total Supplies (AF) 2,499
Surplus/Shortfall w/o WSCP Action (106)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 106
Revised Surplus/(shortfall) 0
2029 Total
Total Water Use (AF) 2,225
Total Supplies (AF) 2,125
Surplus/Shortfall w/o WSCP Action (100)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 100
Revised Surplus/(shortfall) 0
2030 Total
Total Water Use (AF) 2,326
Total Supplies (AF) 2,211
Surplus/Shortfall w/o WSCP Action (115)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 115
Revised Surplus/(shortfall) 0
NOTES:

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

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CHAPTER 8

WATER SHORTAGE CONTINGENCY PLAN
LAY DESCRIPTION – CHAPTER 8

WATER SHORTAGE CONTINGENCY PLAN
Chapter 8 (Water Shortage Contingency Plan) of the City’s 2025 Plan discusses and provides the following:
 The City’s Water Shortage Contingency Plan is a detailed approach which presents how the City intends to act, or respond, in the case of an actual water shortage contingency.
 Preparation of the City’s “Annual Water Supply and Demand Assessment” (or Annual Assessment) is discussed. The City is required to submit annually an Annual Assessment. The Annual Assessment includes a review of the City’s “unconstrained” water demands for the current year and for a potential upcoming single dry year. Unconstrained water demands represent the City’s water demands prior to any “response actions” the City may invoke pursuant to the City’s Water Shortage Contingency Plan.
 The City will manage water supplies to minimize the adverse impacts of water shortages. The City’s plan for water usage during periods of shortage is designed to incorporate six standard water shortage levels corresponding to progressive ranges from up to a 10, 20, 30, 40, and 50 percent shortage, and greater than a 50 percent shortage.
 For each declared water supply shortage level, customers will be required to reduce their consumption by the percentage specified in the corresponding water supply shortage level.
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 For each declared water supply shortage level, the City has established response actions to reduce demand on water supplies and to reduce any shortage gaps in water supplies. These demand reduction actions include irrigation and other outdoor use restrictions, rate structure changes, and other water use prohibitions.  The operational changes the City will consider in addressing water shortages on a short-term basis are discussed and include improved monitoring, analysis, and tracking of customer water usage to enforce demand reduction measures.  The City’s Emergency Response Plan is summarized. The Emergency Response Plan provides the management, procedures, and designated actions the City and its employees will implement during emergency situations (including catastrophic water shortages) resulting from natural disasters, system failures, and other unforeseen circumstances.
 The preparation of the City’s seismic risk assessment and mitigation plan is discussed. The locations of earthquake faults in the vicinity of the City’s water service area are provided.
 The effectiveness of the shortage response actions for each of the City’s standard water shortage levels is presented. The City has been able to provide sufficient water supplies to its customers, including during long-term droughts and years with historically high water demands.
 The communication protocols implemented by the City when it declares any water shortage level are presented.
 The compliance and enforcement procedures associated with City’s standard water shortage levels are presented.
 The legal authorities associated with City’s standard water shortage levels are presented.
 The financial consequences associated with City’s standard water shortage levels are presented.
 The City will evaluate the need for revising the Water Shortage Contingency Plan in order to resolve any water shortage gaps, as necessary. The steps necessary 2025 Urban Water Management Plan

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for the City to adopt and amend its Water Shortage Contingency Plan are presented.

The following Water Shortage Contingency Plan includes references to Chapters and Sections from the City of Sierra Madre’s 2025 Urban Water Management Plan.

WATER SUPPLY RELIABILITY ANALYSIS
CWC 10632.
(a)(1) The analysis of water supply reliability conducted pursuant to Section 10635.

CWC 10632.5.
(a) In addition to the requirements of paragraph (3) of subdivision (a) of Section 10632, beginning January 1, 2020, the plan shall include a seismic risk assessment and mitigation plan to assess the vulnerability of each of the various facilities of a water system and mitigate those vulnerabilities.

The City’s sources of supply were discussed in Section 6.2 of the 2025 Plan and consist of groundwater from the Raymond Basin, future groundwater supplies from the Main Basin, imported water purchased from SGVMWD, and local groundwater supplies from the West Tunnel of the Little San Anita Canyon. The reliability of the various sources of supply are discussed in Chapter 7 of the 2025 Plan. A seismic risk assessment and mitigation plan is discussed in Section 8.4.6.

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ANNUAL WATER SUPPLY AND DEMAND ASSESSMENT PROCEDURES
CWC 10632.
(a) Every urban water supplier shall prepare and adopt a water shortage contingency plan as part of its urban water management plan that consists of each of the following elements CWC 10632.
(a)(2) The procedures used in conducting an annual water supply and demand assessment that include, at a minimum, both of the following:
(A) The written decision-making process that an urban water supplier will use each year to determine its water supply reliability.
(B) The key data inputs and assessment methodology used to evaluate the urban water supplier’s water supply reliability for the current year and one dry year, including all of the following:
(i) Current year unconstrained demand, considering weather, growth, and other influencing factors, such as policies to manage current supplies to meet demand objectives in future years, as applicable.
(ii) Current year available supply, considering hydrological and regulatory conditions in the current year and one dry year. The annual supply and demand assessment may consider more than one dry year solely at the discretion of the urban water supplier.
(iii) Existing infrastructure capabilities and plausible constraints. (iv) A defined set of locally applicable evaluation criteria that are consistently relied upon for each annual water supply and demand assessment. (v) A description and quantification of each source of water supply.

CWC 10632.1.

An urban water supplier shall conduct an annual water supply and demand assessment pursuant to subdivision (a) of Section 10632 and, on or before July 1 of each year, submit an annual water shortage assessment report to the department with information for anticipated shortage, triggered shortage response actions, compliance and enforcement actions, and communication actions consistent with the supplier’s water shortage contingency plan. An urban water supplier that relies on imported water from the State Water Project or the Bureau of Reclamation shall submit its annual water supply and demand assessment within 14 days of receiving its final allocations, or by July 1 of each year, whichever is later.
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By July 1st of every year, the City is required to submit an “Annual Water Supply and Demand Assessment” (Annual Assessment) in accordance with DWR’s guidance and requirements. The Annual Assessment includes a review of the City’s unconstrained water demands (i.e. water demands prior to any projected response actions the City may trigger under this Water Shortage Contingency Plan) for the current year and the upcoming (potential single dry) year. The Annual Assessment also includes information regarding anticipated shortages, triggered shortage response actions, compliance and enforcement actions, and communication actions consistent with the City’s Water Shortage Contingency Plan.

For each Annual Assessment, the City plans to prepare a preliminary assessment which evaluates the adequacy of its water supplies for the current and upcoming years by April of each year. The preliminary assessment will include a review of water supplies for at least a single dry year.

During the preparation of each Annual Assessment, the City will evaluate the adequacy of its water supplies for the current and upcoming years. The evaluation will include a review of water supplies for at least a single dry year.

DECISION-MAKING PROCESS
The City currently produces groundwater from the Raymond Basin as its primary source of water supply and that basin is managed on a fiscal year basis. Consequently, during the third quarter of each fiscal year the City will review its water demands from the initial six months along with the current groundwater basin conditions and local hydrology. This information will be used to help develop the Annual Assessment. A draft of the Annual Assessment will be circulated internally within the City for peer review and comment.

Based on comments received, a redraft will be prepared and provided to City managers during the Spring of each year. The draft will subsequently be provided to the General Manager for final review. If necessary, a final draft of the Annual Assessment will be 2025 Urban Water Management Plan

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provided to the City Council for review and included in the agenda as part of a Council meeting such that it can be approved and any recommended specific shortage response actions may be enacted. The final Annual Assessment will be provided to DWR no later than July 1 of each year.

The Annual Assessments will be instrumental in providing guidance to the City for decisions regarding potential declarations of a water supply shortage and implementation of water reduction stages, instituting mandatory water restrictions, promoting water use efficiency and conservation programs, water rates and drought rate surcharges, and the necessity of pursuing alternative water supplies. This process will help ensure adequate water supplies resources are available to the City.

DATA AND METHODOLOGIES
The key data inputs and methodologies which will be evaluated by the City during the preparation of the Annual Assessment will include the following:
1) Evaluation Criteria: The locally applicable evaluation criteria used to prepare the Annual Assessment will be identified. The evaluation criteria will include, but is not limited to, an analysis of current local hydrology (including rainfall and groundwater levels), current water demands, a review of water system improvement plans which may impact infrastructure availability, and water quality regulations which may impact groundwater availability.
2) Water Supply: A description of each available water supply source will be provided.

The descriptions will include a quantification of each available water supply source and will be based on review of current production capacities, historical production, Urban Water Management Plans, and prior water supply studies (including Water Supply Assessments and/or Master Plans).
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3) Unconstrained Water Demand: The potential unconstrained water demands during the current year and the upcoming (potential single dry) year will be reviewed. The review will include factors such as weather, existing and projected land uses and populations, actual customer consumption and water use factors, monthly Urban Water Supplier Monthly Reports, existing water shortage levels (see Section 8.3), and existing water conservation ordinances (see Section 9.1). 4) Planned Water Use for Current Year Considering Dry Subsequent Year: The water supplies available to meet the demands during the current year and the upcoming (potential single dry) year will be considered and identified by each type of supply.

The evaluation will include factors such as estimated water demands, weather, groundwater basin operating safe yields, water quality results, existing available pumping capacities, imported water allocations, contractual obligations, regulatory issues, use of emergency interconnections, and the costs associated with producing each water supply source.

Infrastructure Considerations: The capabilities of the water distribution system infrastructure to meet the water demands during the current year and the upcoming (potential single dry) year will be considered. Available production capacities (e.g. groundwater well capacities) and distribution system water losses (see Section

4.3) will be reviewed. In addition, capital improvement and replacement projects, as well as potential projects which may increase water system and production capacities (see Section 6.2.10), will be considered.

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SIX STANDARD WATER SHORTAGE LEVELS
CWC 10632.
(a)(3)(A) Six standard water shortage levels corresponding to progressive ranges of up to 10, 20, 30, 40, and 50 percent shortages and greater than 50 percent shortage. Urban water suppliers shall define these shortage levels based on the suppliers’ water supply conditions, including percentage reductions in water supply, changes in groundwater levels, changes in surface elevation or level of subsidence, or other changes in hydrological or other local conditions indicative of the water supply available for use.

Shortage levels shall also apply to catastrophic interruption of water supplies, including, but not limited to, a regional power outage, an earthquake, and other potential emergency events.
(a)(3)(B) An urban water supplier with an existing water shortage contingency plan that uses different water shortage levels may comply with the requirement in subparagraph (A) by developing and including a cross-reference relating its existing categories to the six standard water shortage levels.

The City has a legal responsibility to provide water utility services, including water for residential, commercial, industrial, public authority, and for public fire hydrants and private fire services. The City will manage water supplies prudently to minimize the adverse impacts of water shortages. The City’s plan for water usage during periods of shortage is designed to provide a minimum of 50 percent of normal supply during a severe or extended water shortage. Water shortage trigger mechanisms have been established to ensure that this policy is implemented.

For each declared water supply shortage level, customers will be required to reduce their water consumption by the percentage specified in the corresponding water supply shortage level.

Chapter 13.24 of the City’s Municipal Code is the City’s adopted mandatory water conservation plan, as shown in Appendix I, which has established six (6) water shortage levels (following the adoption of City Ordinance 1446 in 2021). In accordance with the California Water Code in which urban water suppliers are required to define six standard 2025 Urban Water Management Plan

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water shortage levels, and as shown in Table 8-1, the City’s established shortage levels are consistent with the mandated standard shortage levels.

SHORTAGE RESPONSE ACTIONS
CWC 10632.
(a)(4) Shortage response actions that align with the defined shortage levels and include, at a minimum, all of the following:
(A) Locally appropriate supply augmentation actions.
(B) Locally appropriate demand reduction actions to adequately respond to shortages. (C) Locally appropriate operational changes.
(D) Additional, mandatory prohibitions against specific water use practices that are in addition to state-mandated prohibitions and appropriate to the local conditions. (E) For each action, an estimate of the extent to which the gap between supplies and demand will be reduced by implementation of the action.

SUPPLY AUGMENTATION
The City is developing a new groundwater well to produce from the Main Basin as a new source of water supply to address customer demands. Table 8-2 reflects this approach and identifies the Main Basin supplies. In addition, the City will focus on demand reduction measures in the event existing and planned sources of supply are not sufficient to meet customer demands. As discussed in Chapter 6, the City’s sources of water supply include groundwater produced from the Raymond Basin and Main Basin, imported water purchased from SGVMWD, and local groundwater from the West Tunnel of the Little San Anita Canyon. As noted in Section 8.2, the City is required to annually prepare and submit an Annual Assessment which will include a review of water supplies available to meet water demands for the current and upcoming years. If the City is currently in, or considers 2025 Urban Water Management Plan

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entering into, one of the standard water shortage levels identified in Section 8.3, the City will consider the water supply augmentation actions described below.

As noted in Section 6.2.2, the Main Basin is managed by the Main Basin Watermaster.

During the period of management under the Main Basin Judgment, significant drought events have occurred. In each drought cycle the Main Basin has been managed to maintain water levels. Parties to the Main Basin Judgment, including the City, are authorized to produce groundwater in excess of their rights and pay assessments for such production to the Main Basin Watermaster. The assessments are used to purchase untreated imported water to replenish the Main Basin. The Main Basin Watermaster purchases untreated imported water to replenish the Main Basin through SGVMWD. An additional potential source of replenishment water is recycled water. Groundwater quality is carefully monitored and managed by the Main Basin Watermaster. Treatment facilities and/or blend plans have been developed by water agencies to meet potable water standards and to prevent the spread of any groundwater contamination. Groundwater quality in the Main Basin is not expected to impact potable supplies or constrain supply reliability. Based on historical and on-going management practices, the City will be able to rely on the Main Basin for adequate supplies in response to each of the standard water shortage levels identified in Section 8.3.

DEMAND REDUCUTION
The City may establish water shortage response actions to reduce demand on water supplies. These demand reduction actions include irrigation and other outdoor use restrictions, rate structure changes, and other water use prohibitions. Depending on the percent reduction in the City’s water supply and corresponding water shortage level, regulations are made to conserve water and reduce the shortage gap in normal supply levels. Many demand reduction actions, identified as voluntary or mandatory conservation measures, are applicable to all levels of water shortages. The structure of water shortage levels are designed to strongly encourage customers with high per capita usage to 2025 Urban Water Management Plan

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achieve proportionally greater reduction than those with low usage. Violations of these demand reduction actions will be considered waste and an unreasonable use of water.

Table 8-3 describes each demand reduction action and its effect on reducing the shortage gap.

A full listing of the restrictions/prohibitions associated with each shortage level is provided below.

Prohibited uses applicable to all customers
The following uses of water are prohibited for all water department customers.

A. There shall be no washing of sidewalks, walkways, patios, driveways, or parking areas by a water hose;
B. No water shall be used to clean, fill or maintain levels in decorative fountains unless such water is part of a recycling system;
C. No restaurant, cafe, deli, or other public place where food is sold, served or offered for sale, shall serve drinking water to any customer unless expressly requested by the customer;
D. All customers of the water department shall repair leaks in a timely manner; E. No lawn, landscaping, or other turf area shall be watered or irrigated between the hours of 6 a.m. and 6 p.m.;
F. No lawn, landscape, or turf area shall be watered in a wasteful manner. Nor shall any water be wasted if the existing conditions may be corrected or reasonably modified;
G. The use of a hose to wash an automobile, 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;
H. Watering lawns in a manner that causes runoff, or within forty-eight hours after measurable precipitation; and
I. Irrigating ornamental turf on public street medians. 2025 Urban Water Management Plan

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Water Shortage Level 1
If a Water Shortage Level 1 is declared no customer shall make, cause, use or permit the use of water delivered from the water department for any purpose in an amount in excess of ninety percent of the amount used during the base period allocation.

Water Shortage Level 2
If a Water Shortage Level 2 is declared, no customer shall make, cause, use or permit the use of water delivered from the water department for any purpose in an amount in excess of eighty percent of the amount used during the base period allocation.

Water Shortage Level 3
If a Water Shortage Level 3 is declared, no customer shall make, cause, use, or permit the use of water delivered from the water department for any purpose in an amount in excess of seventy percent of the base period allocation.

Water Shortage Level 4
If a Water Shortage Level 4 is declared, no customer shall make, cause, use, or permit the use of water delivered from the water department for any purpose in an amount in excess of sixty percent of the base period allocation.

Water Shortage Level 5
If a Water Shortage Level 5 is declared, no customer shall make, cause, use, or permit the use of water delivered from the water department for any purpose in an amount in excess of fifty percent of the base period allocation.
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Water Shortage Level 6
If a Water Shortage Level 6 is declared, no customer shall make, cause, use, or permit the use of water delivered from the water department for any purpose in an amount more than fifty percent of the base period allocation.

OPERATIONAL CHANGES
During a water supply shortage situation, the City will manage its water supply resources to provide sufficient water supplies capable of meeting the demands of its customers.

Section 8.4.2 describes the City’s water supply sources and water supply augmentation actions available. Section 8.4.1 describes the City’s standard water shortage levels and associated demand reduction measures. The supply augmentation actions and demand reduction measures, when implemented, may potentially result in short-term operational changes which are necessary to allow the City to utilize all available water supply sources in response to water shortage situations.

As noted in Section 8.2, the City is required to annually prepare and submit an Annual Assessment which will include a review of the water supplies available to meet water demands for the current and upcoming years. Preparation of the Annual Assessment will assist the City in determining any potential operational changes. In addition, the City’s standard water shortage levels and the associated demand reduction measures, in conjunction with the City’s existing Demand Management Measures (discussed in Chapter 9), will be essential to the City in reducing water demands during any water shortage period. The operational changes the City will consider in addressing noncatastrophic water shortages on a short-term basis include the following:
 Improved monitoring, analysis, and tracking of customer water usage to enforce demand reduction measures
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 Optimized production from existing available water supply sources  Potential use of emergency supply sources, including emergency interconnections  Potential blending of water supply resources
 Improved monitoring, maintenance, and repairs to reduce water distribution system losses

ADDITIONAL MANDATORY RESTRICTIONS
The mandatory restrictions which are implemented by the City to reduce customer demands are discussed in Section 8.4.2. There are no additional mandatory restrictions planned at this time.

EMERGENCY RESPONSE PLAN
Catastrophic water shortages are incorporated in the City’s standard water shortage levels (identified in Section 8.3) and the associated demand reduction measures (described in Section 8.4.2). In addition to the water supply augmentation actions (Section 8.4.1) and potential operational changes (Section 8.4.3) which the City may consider in order to continue providing sufficient water supplies, the City will review and implement any necessary steps included in its “Emergency Response Plan”.

As part of the “America’s Water Infrastructure Act of 2018”, community water systems serving a population greater than 3,300 people, including the City, are required to review and update their “Risk and Resilience Assessment” (RRA) and the associated “Emergency Response Plan” (ERP) every five (5) years. However, due to security concerns regarding the submitting of these reports, water systems are required to submit certifications to the United States Environment Protection Agency (USEPA), from March 31, 2025 and December 31, 2026, confirming the current RRA and ERP have been reviewed and updated.
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The City’s RRA, updated during FY 2026-27, evaluates the vulnerabilities, threats, and consequences from potential hazards to the City’s water system. The City prepared its RRA (which is incorporated by reference) by evaluating the following items:
 Natural hazards and malevolent acts (i.e., all hazards);  Resilience of water facility infrastructure (including pipes, physical barriers, water sources and collection, treatment, storage and distribution facilities, and electronic, computer and other automated systems);
 Monitoring practices;
 Financial systems (e.g., billing systems);
 Chemical storage and handling; and
 Operation and maintenance.

The City’s RRA evaluated a series of potential malevolent acts, natural hazards, and other threats in order to estimate the potential “monetized risks” (i.e. associated economic consequences to both the water system and surrounding region, and the likelihood of occurrence) associated with the City’s water facility assets. The cost-effectiveness of implementing potential countermeasures to reduce risks was also reviewed.

The City’s ERP, updated during FY 2026-27, provides the management, procedures, and designated actions the City and its employees will implement during emergency situations (including catastrophic water shortages) resulting from natural disasters, system failures and other unforeseen circumstances. The City’s ERP (which is incorporated by reference) will provide the guidelines for evaluating an emergency situation, procedures for activating an emergency response, and details of the different response phases in order to ensure that customers receive a reliable and adequate supply of potable water. The scope of the ERP includes emergencies which directly affect the water system and the ability to maintain safe operations (such as a chlorine release, and earthquake or a threat 2025 Urban Water Management Plan

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of contamination). The ERP will also incorporate the results of City’s RRA and includes the following:
 Strategies and resources to improve resilience, including physical and cybersecurity
 Plans and procedures for responding to a natural hazard or malevolent act  Actions and equipment to lessen the impact of a natural hazard or malevolent act  Strategies to detect natural hazards or malevolent act The City will review the ERP for procedures regarding the utilization of alternative water supply sources in response to water supply shortages, including during the standard water shortage levels. The City will also review applicable procedures described in the ERP regarding any necessary temporary shutdown of water supply facilities, including appropriate regulatory and public notifications.

SEISMIC RISK ASSESSMENT AND MITIGATION PLAN
CWC 10632.5.
(a) In addition to the requirements of paragraph (3) of subdivision (a) of Section 10632, beginning January 1, 2020, the plan shall include a seismic risk assessment and mitigation plan to assess the vulnerability of each of the various facilities of a water system and mitigate those vulnerabilities.
(b) An urban water supplier shall update the seismic risk assessment and mitigation plan when updating its urban water management plan as required by Section 10621. (c) An urban water supplier may comply with this section by submitting, pursuant to Section 10644, a copy of the most recent adopted local hazard mitigation plan or multihazard mitigation plan under the federal Disaster Mitigation Act of 2000 (Public Law 106-390) if the local hazard mitigation plan or multihazard mitigation plan addresses seismic risk.

The City prepared a local “Hazard Mitigation Plan” in 2020. The Hazard Mitigation Plan identifies effective ways to assess the significant natural hazards (including earthquakes) 2025 Urban Water Management Plan

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that may affect the City and its residents. The Hazard Mitigation Plan provides resources, information, and strategies to reduce the City’s vulnerability to these hazards, while providing guidance for the coordination of mitigation activities throughout the City. The Hazard Mitigation Plan includes mitigation projects necessary to reduce seismic risk to the City’s water distribution system facilities (including its distribution system pipelines, groundwater wells, booster pumps, and storage reservoirs) and potential disruptions in providing water service. The City’s Hazard Mitigation Plan is provided in Appendix J.

The County of Los Angeles prepared a “All-Hazards Mitigation Plan” in 2025 which identified methods to assess significant natural hazards (including earthquakes) affecting areas throughout Los Angeles County, and the mitigation strategies necessary to reduce risks, including seismic risk. The County’s All-Hazards Mitigation Plan is provided in Appendix K.

The California Geological Survey has published the locations of numerous faults which have been mapped in the Southern California region. Although the San Andreas fault is the most recognized and is capable of producing an earthquake with a magnitude greater than 8 on the Richter scale, some of the lesser-known faults have the potential to cause significant damage. The locations of these earthquake faults in the vicinity of the City’s water service area are provided in the figure below. The faults that are located in close proximity to and could potentially cause significant shaking in the City’s water service area include the San Andreas fault, the Raymond fault, the San Gabriel fault, and the Sierra Madre fault.

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Location of Earthquake Faults
Source: https://maps.conservation.ca.gov/cgs/fam/App/
The California Geological Survey provides earthquake hazard maps10 based on the Modified Mercalli Intensity (MMI) scale, which measures earthquake shaking intensity and its impacts on people, objects, and buildings. The area within the City’s service area has an MMI of approximately 9.5 calculated based on the level of shaking that has a 2 percent chance of being exceeded in 50 years (or the level of shaking with an approximate 2,500- year average repeat time). An MMI at this intensity (violent shaking) can result in buildings shifted off foundations, cracked, or tilted, the ground cracked, and underground pipes broken. As discussed in Section 8.4.5, the City has prepared an Emergency Response Plan which will provide the management, procedures, and designated actions the City and its employees will implement during emergency situations resulting from 10 https://conservation.ca.gov/cgs/sh/earthquake-shaking-potential City’s Service Area
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natural disasters, including during earthquakes, to ensure that customers receive a reliable and adequate supply of potable water. The City’s ERP is incorporated by reference.

SHORTAGE RESPONSE ACTION EFFECTIVENESS
The effectiveness of the shortage response actions for each of the standard water shortage levels identified in Section 8.3 is evident in the City’s historical ability to meet its customer’s water demands in response to a water supply shortage. In addition, the City imposes water consumption regulations and restrictions, and supports local agencies in efforts to enforce regulations and prohibitions on water use. The effectiveness of each of the City’s shortage response actions, in order to reduce any potential gaps between supply and demand, has been quantified in the expected demand reduction provided in Table 8-2 and Table 8-3.

Section 6.1 provides a tabulation of the City’s historical annual water demands for each water supply source. During the past 15 years, the City experienced a five-year consecutive drought within its service area from FY 2011-121 to FY 2015-16. Throughout this extended dry year period, the City’s annual water production ranged from 2,125 AF to 2,841 AF, with an average of approximately 2,472 AF. In addition, historical records indicate the City previously produced a maximum of up to 3,717 AF during FY 2006-07.

The City has been able to provide sufficient water supplies to its customers, including during long-term droughts and years with historically high water demands. In addition, the City has been able to provide water service to meet maximum day water demands for these years, including during the summer months.

The City’s water demands during the most recent five years (from FY 2020-21 to FY 2024- 25) averaged approximately 2,295 AFY. Due to conservation efforts and demand management measures (discussed in Chapter 9), the City’s recent water demands have been significantly less than its historical water demands, including during long-term 2025 Urban Water Management Plan

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droughts. The City’s projected water demands (during normal, single dry, and five consecutive year droughts) are provided in Section 7.2.3 and are anticipated to incorporate similar reductions in water use rates as a result of the shortage response actions, ongoing conservation efforts, and demand management measures. Because the City’s projected water demands are similar to or less than its historical water demands, it is anticipated the City will be able to continue providing sufficient water supplies to its customers to meet projected water demands, including during long-term droughts. In addition, as discussed in Section 8.4.1, based on historical and on-going management practices, the City will be able to continue relying on its water supply source from the Raymond Basin for adequate supply augmentation in response to each of the standard water shortage levels identified in Section 8.3.

Based on the City’s ability in meeting water demands during past water supply shortages, adopted water shortage levels, adjusted operating safe yields, and long-term droughts, it is anticipated that the City will be able to continue providing sufficient water supplies to its customers during any of its standard water shortage levels. Although adequate supplies are anticipated, the cost of those water supplies may become incrementally more expensive. The City will enact varying levels of its water shortage contingency plan to encourage retail customers to reduce water consumption and at the same time reduce the need to use the more expensive water supplies. Notwithstanding, the effectiveness of each of the City’s shortage response actions, in order to reduce any potential gaps between supply and demand, has been quantified in the expected demand reduction provided in Table 8-2 and Table 8-3. The effectiveness of the City’s shortage response actions is based on the City’s water demands prior to 2015 (unconstrained demands).

The City reduced its water demands in 2015 in response to the Governor’s April 1, 2015 Executive Order B-29-15 which mandated statewide reduction in water use of 25 percent.

The City’s actual water demand reduction during this period was used to estimate the extent of water use reductions for the City’s Water Shortage Stages. The City’s Water Shortage Levels 1, 2, 3, 4, 5, and 6 are expected to reduce water demands by up to 10%, 20%, 30%, 40%, 50%, and greater than 50%, respectively. 2025 Urban Water Management Plan

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Emergency regulations previously adopted by the SWRCB pursuant to Executive Order N-7-22 (issued on March 28, 2022 by California Governor Gavin Newsom) required urban water suppliers to implement Level 2 of their Water Shortage Contingency Plans meant to address up to a 20% shortage of water supplies. The regulations also required urban water suppliers to establish a ban on irrigating non-functional turf at commercial, industrial, and institutional properties (including grass in front of or next to large industrial or commercial buildings). The ban did not include watering turf that is used for recreation or other community purposes, water used at residences or water to maintain trees.

Pursuant to Executive Order N-5-23 issued on March 24, 2023 by California Governor Gavin Newsom, the requirement for urban water suppliers to implement Level 2 of their Water Shortage Contingency Plans was removed. As of June 5, 2024, SWRCB statewide water conservation emergency regulations have expired. In October 2023, however, the California State Legislature passed Assembly Bill 1572, which phases in a ban on decorative grass watering in commercial, industrial, and institutional areas permanently beginning January 2027.

COMMUNICATION PROTOCOLS
CWC 10632.
(a)(5) Communication protocols and procedures to inform customers, the public, interested parties, and local, regional, and state governments, regarding, at a minimum, all of the following:
(A) Any current or predicted shortages as determined by the annual water supply and demand assessment described pursuant to Section 10632.1. (B) Any shortage response actions triggered or anticipated to be triggered by the annual water supply and demand assessment described pursuant to Section 10632.1. (C) Any other relevant communications.
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The City is required to submit an “Annual Water Supply and Demand Assessment” (Annual Assessment) in accordance with DWR’s guidance and requirements. The Annual Assessment will include a review of the City’s unconstrained water demands (i.e. water demands prior to any projected response actions the City may trigger under this WSCP) for the current year and the upcoming (potential single dry) year. The City will also include information regarding anticipated shortages, triggered shortage response actions, compliance and enforcement actions, and communication actions consistent with the City’s WSCP. See Section 8.2 for further discussion regarding the Annual Assessment.

All water supply shortage conditions will be effective on the tenth day after the date the shortage is declared. Within five days following the declaration of the shortage level, the City will publish a notice of the declaration of water supply shortage in a newspaper used for publication of official notices, post the notice in the same location and manner as other official notices of the city are posted, and use whatever means are reasonably available, including but not limited to the city’s website, the emergency telephone notification system, and regular billing statements, to notify customers of the shortage declaration.

The information provided will include the declared shortage level, response action associated with each shortage level, and any other relevant information relating to the declaration.
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COMPLIANCE AND ENFORCEMENT
CWC 10632.
(a)(6) For an urban retail water supplier, customer compliance, enforcement, appeal, and exemption procedures for triggered shortage response actions as determined pursuant to Section 10632.2.

Under Section 13.24.150 of the City Municipal Code, any customer violating the regulations and restrictions on water use set forth in the City Municipal Code may be punishable by an administrative citation as follows:

1. $100 for the first violation

2. $250 for the second violation

3. $500 for the third and any additional violation

LEGAL AUTHORITIES
CWC 10632.
(a)(7)(A) A description of the legal authorities that empower the urban water supplier to implement and enforce its shortage response actions specified in paragraph (4) that may include, but are not limited to, statutory authorities, ordinances, resolutions, and contract provisions.
(B) A statement that an urban water supplier shall declare a water shortage emergency in accordance with Chapter 3 (commencing with Section 350) of Division 1. [see below] (C) A statement that an urban water supplier shall coordinate with any city or county within which it provides water supply services for the possible proclamation of a local emergency, as defined in Section 8558 of the Government Code.

CWC Division 1, Section 350
The governing body of a distributor of a public water supply, whether publicly or privately owned and including a mutual water company, shall declare a water shortage emergency condition to prevail within the area served by such distributor whenever it finds and determines that the 2025 Urban Water Management Plan

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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.

In the event that the demand of water consumers cannot be satisfied without depleting a substantial amount of water supply needed for human consumption, sanitation, and fire protection, the City shall declare a water shortage emergency (in accordance with Water Code Chapter 3 commencing with Section 350 of Division 1 regarding water shortage emergencies). The City shall coordinate with any city or county within its service area for possible declaration of a local emergency, as defined in Section 8588 of the Government Code.

Chapter 13.24 of the City’s Municipal Code is the City’s adopted mandatory water conservation plan, as shown in Appendix I (following the adoption of Ordinance 1446 in 2021). The purpose and intent of Chapter 13.24 of the City’s Municipal Code is to establish a water conservation and supply shortage program that will reduce water consumption within the City’s jurisdiction through conservation, enable effective water supply planning, assure reasonable and beneficial use of water, prevent waste of water, and maximize the efficient use of water within the City to avoid and minimize the effect and hardship of water shortage to the greatest extent possible.

FINANCIAL CONSEQUENCES OF WSCP
CWC 10632.
(a)(8) A description of the financial consequences of, and responses for, drought conditions, including, but not limited to, all of the following:
(A) A description of potential revenue reductions and expense increases associated with activated shortage response actions described in paragraph (4). 2025 Urban Water Management Plan

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(B) A description of mitigation actions needed to address revenue reductions and expense increases associated with activated shortage response actions described in paragraph (4). (C) A description of the cost of compliance with Chapter 3.3 (commencing with Section 365) of Division 1. [retail urban suppliers only]
During periods of water supply shortages, state-mandated water use restrictions, or emergency conditions, the City may require its customers to reduce demands below levels projected under the current water rate structure. Under any of these circumstances, the City may experience a decrease in revenues that may result in insufficient funds to meet projected expenses.

The City maintains financial operating reserves, which may be used for water system expenditures to make up for unanticipated shortfalls in water revenue as the result of reduced water sales. In addition, the City adopted a new water rate structure in 2023 designed to increase rate revenues over the next five years, cover increases in imported water charges, and fund capital projects and a portion of deferred maintenance.

MONITORING AND REPORTING
CWC 10632.
(a)(9) For an urban retail water supplier, monitoring and reporting requirements and procedures that ensure appropriate data is collected, tracked, and analyzed for purposes of monitoring customer compliance and to meet state reporting requirements.

When a Shortage Level has been declared, production figures are reported and used by the City to compare the current monthly production to the monthly production prior to the declared level shortage to verify that the reduction goal is being met. Customer compliance of the provisions adopted by declaration of a WSCP are monitored and 2025 Urban Water Management Plan

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reported through water loss audits performed by the City. Staff prepares annual Distribution System Water Audits to monitor water losses. Staff reviews the audits to track real and apparent losses. The City regularly monitors its system and repairs leaks in a timely manner. This includes regular checks on valves and meters, and pipeline maintenance. If leaks are encountered or suspected during routine inspection of the system, further evaluation is conducted. If leaks are found, they are repaired.

WSCP REFINEMENT PROCEDURES
CWC 10632.
(a)(10) Reevaluation and improvement procedures for systematically monitoring and evaluating the functionality of the water shortage contingency plan in order to ensure shortage risk tolerance is adequate and appropriate water shortage mitigation strategies are implemented as needed.

The City’s Water Shortage Contingency Plan has been prepared as an adaptive management plan. As discussed in Section 8.9, the City will monitor and report on the implementation of the Water Shortage Contingency Plan. The City will review the implementation results for any current or potential shortage gaps between water supplies and demands. The City will evaluate the need for revising the Water Shortage Contingency Plan in order to resolve any shortage gaps, as necessary. The City will consider the following potential revisions in the event of a potential shortage gap:
 Implementation of additional public outreach, education, and communication programs (in addition to the programs discussed in Chapter 9).  Implementation of more stringent water use restrictions under the standard water shortage levels (discussed in Section 8.4)
 Implementation of stricter enforcement actions and penalties (discussed in Section

8.6)
2025 Urban Water Management Plan

City of Sierra Madre Page 8-27
 Improvements to the water supply augmentation responses (discussed in Section

8.4.1), as well as any associated operational changes (discussed in Section 8.4.3) which may be required
 Incorporation of additional actions recommended by City staff or other interested parties
The City will use the monitoring and reporting data to evaluate the ability for these potential revisions to resolve any shortage gaps which may occur within the standard water shortage levels.

This Water Shortage Contingency Plan is adopted as part of the City’s 2025 Urban Water Management Plan adoption process discussed in Section 10.3. It is anticipated the City will review, revise, and adopt an updated Water Shortage Contingency Plan as part of preparing its 2030 Urban Water Management Plan as necessary. However, the City will continue to review the monitoring and reporting data, and if needed, update the Water Shortage Contingency Plan more frequently. Any updates to the City’s Water Shortage Contingency Plan will include a public hearing and adoption process by the City Council (see Section 8.12).

SPECIAL WATER FEATURE DISTINCTION
CWC 10632.
(b) For purposes of developing the water shortage contingency plan pursuant to subdivision (a), an urban water supplier shall analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas, as defined in subdivision (a) of Section 115921 of the Health and Safety Code.

The City’s Water Shortage Contingency Plan defines “decorative water features” as water features which are artificially supplied with water, including ponds, lakes, waterfalls, and 2025 Urban Water Management Plan

City of Sierra Madre Page 8-28
fountains, but excluding pools and spas. In general, there are additional health and safety considerations in the water supplied to pools and spas compared to decorative water features. As a result, the City’s Water Shortage Contingency Plan has reviewed the response actions, enforcement actions, and monitoring and reporting programs separately for decorative water features and for pools and spas, as applicable.

PLAN ADOPTION, SUBMITTAL, AVAILABILITY, AND AMENDMENT

PROCEDURES
CWC 10632.
(c) The urban water supplier shall make available the water shortage contingency plan prepared pursuant to this article to its customers and any city or county within which it provides water supplies no later than 30 days after adoption of the water shortage contingency plan.

The City’s Water Shortage Contingency Plan is adopted as part of the City’s 2025 Urban Water Management Plan adoption process discussed in Chapter 10. The process for adopting the City’s Water Shortage Contingency Plan includes the following:
 The City will conduct a public hearing and make the Water Shortage Contingency Plan available for public inspection.
 The City will provide notification of the time and place of the public hearing to any city or county in which water is provided.
 The City will publish notice of public hearing in a newspaper once a week, for two successive weeks (with at least five days between publication dates).  The City Council will adopt the 2025 Urban Water Management Plan and the Water Shortage Contingency Plan
 As part of submitting the 2025 Urban Water Management Plan to DWR, the City will also submit the Water Shortage Contingency Plan (electronically through 2025 Urban Water Management Plan

City of Sierra Madre Page 8-29
DWR’s online submittal tool) within 30 days of adoption and by July 1, 2026. The City will submit a copy of the Water Shortage Contingency Plan to the California State Library and to any city or county in which water is provided within 30 days of adoption. In addition, the City will make the Water Shortage Contingency Plan available for public review within 30 days of adoption.

If there are any subsequent amendments required, the process for adopting an amended Water Shortage Contingency Plan includes the following:
 The City will conduct a public hearing and make the amended Water Shortage Contingency Plan available for public inspection.
 The City Council will adopt the amended Water Shortage Contingency Plan  The City will submit the amended Water Shortage Contingency Plan to DWR (electronically through DWR’s online submittal tool) within 30 days of adoption Additional information regarding the adoption, submittal, and availability of the City’s Water Shortage Contingency Plan (and 2025 Urban Water Management Plan) is provided in Chapter 10.

RESOURCES AND REFERENCES
DWR’s Final 2025 UWMP Guidebook provides a listing of resources and references which can be helpful during the preparation of a Water Shortage Contingency Plan.

SUBMITTAL TABLES
The applicable standardized Submittal Tables referenced within Chapter 8 are provided below.
2025 Urban Water Management Plan

City of Sierra Madre Page 8-30
TABLE 8-1: CROSS REFERENCE FOR STANDARD VS.

SUPPLIER SHORTAGE LEVELS
Table 8-1 Cross-Reference for Standard vs. Supplier Shortage Levels

2025 Urban Water Management Plan

City of Sierra Madre Page 8-31
TABLE 8-2: SUPPLY AUGMENTATION AND OTHER ACTIONS
Table 8-2 Supply Augmentation and Other Actions

Yes
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range)
(AF)
1 Transfers Volume 0 Not applicable (see Notes)
1 Other Actions (describe) Volume 0 Main Basin groundwater (new source) 2 Transfers Volume 0 Not applicable (see Notes)
2 Other Actions (describe) Volume 0 Main Basin groundwater (new source) 3 Transfers Volume 0 Not applicable (see Notes)
3 Other Actions (describe) Volume 0 Main Basin groundwater (new source) 4 Transfers Volume 0 Not applicable (see Notes)
4 Other Actions (describe) Volume 0 Main Basin groundwater (new source) 5 Transfers Volume 0 Not applicable (see Notes)
5 Other Actions (describe) Volume 0 Main Basin groundwater (new source) 6 Transfers Volume 0 Not applicable (see Notes)
6 Other Actions (describe) Volume 0 Main Basin groundwater (new source) Submittal Table 8-2 Retail: Supply Augmentation and Other Actions Water Code Section 10632(a)(4)(A),(C) and (E)
Add additional rows as needed
NOTES: The City will consider increased production from the Main Basin using proposed facilities to address increased demands.

As noted on Table 8-3, the City plans to implement demand reduction measures in the event water supplies from existing sources are not sufficient to meet anticipated demands.

City of Sierra Madre Page 8-32
TABLE 8-3: DEMAND-REDUCTION ACTIONS
Table 8-3 Demand-Reduction Actions
Yes
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range)
(AF)
1 Other - Prohibit use of potable
water for washing hard surfaces Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Water Features - Restrict water use
for decorative water features, such
as fountains
Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 CII - Restaurants may only serve
water upon request Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Other - Customers must repair
leaks, breaks, and malfunctions in a
timely manner
Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Landscape - Limit landscape
irrigation to specific times Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Landscape - Restrict or prohibit
runoff from landscape irrigation Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Other - Require automatic shut of
hoses Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Landscape - Other landscape
restriction or prohibition Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Prohibit landscape irrigation within 48 hours
after measurable precipitation Yes
1 Landscape - Prohibit certain types
of landscape irrigation Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
2 Other Volume
Collective reduction
from Shortage Level
1 plus all Shortage
Level 2 actions is up
to 232 AFY
All actions under Shortage Level 1 Yes
3 Other Volume
Collective reduction
from Shortage Level
2 plus all Shortage
Level 3 actions is up
to 348 AFY
All actions under Shortage Level 2 Yes
4 Other Volume
Collective reduction
from Shortage Level
3 plus all Shortage
Level 4 actions is up
to 464 AFY
All actions under Shortage Level 3 Yes
5 Other Volume
Collective reduction
from Shortage Level
4 plus all Shortage
Level 5 actions is up
to 580 AFY
All actions under Shortage Level 4 Yes
6 Other Volume
Collective reduction
from Shortage Level
5 plus all Shortage
Level 6 actions is
greater than 580 AF
All actions under Shortage Level 5 Yes
Shortage
Level
Demand Reduction Actions
Drop down list
These are the only categories that will
be accepted by the WUEdata online
submittal tool. Select those that apply.

Additional Explanation or Reference
(OPTIONAL)
NOTES:

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

City of Sierra Madre Page 9-1
CHAPTER 9

DEMAND MANAGEMENT MEASURES
LAY DESCRIPTION – CHAPTER 9

DEMAND MANAGEMENT MEASURES
Chapter 9 (Demand Management Measures) of the City’s 2025 Plan discusses and provides the following:
 The City has implemented “Demand Management Measures” to reduce its water demands and achieve its water use targets (discussed in Chapter 5)  The City’s Demand Management Measures include adoption of an ordinance to prevent water waste.
 The City’s Demand Management Measures include metering of all customer connections, including separate metering for single-family residential, commercial, industrial, large landscape and institutional/governmental facilities.  The City’s Demand Management Measures include conservation pricing. The City’s current water rate structure is tiered to promote water conservation by customers.
 The City’s Demand Management Measures include public education and outreach programs regarding water conservation.
 The City’s Demand Management Measures include various actions to assess and manage water distribution system losses.
 Additional Demand Management Measures including San Gabriel Valley Municipal Water District funded rebates, conservation, and educational programs are discussed.
2025 Urban Water Management Plan

City of Sierra Madre Page 9-2
 A summary of the Demand Management Measures the City has implemented over the past five (5) years is provided. The City met the 2020 Water Use Target (discussed in Chapter 5) through the implementation of these Demand Management Measures.

DEMAND MANAGEMENT MEASURES FOR RETAIL SUPPLIERS
CWC 10631.
(e) Provide a description of the supplier’s water demand management measures. This description shall include all of the following:
(1)(A) For an urban retail water supplier, as defined in Section 10608.12, a narrative description that addresses the nature and extent of each water demand management measure implemented over the past five years. The narrative shall describe the water demand management measures that the supplier plans to implement to achieve its water use targets pursuant to Section 10608.20.
(B) The narrative pursuant to this paragraph shall include descriptions of the following water demand management measures:
(i) Water waste prevention ordinances.
(ii) Metering.
(iii) Conservation pricing.
(iv) Public education and outreach.
(v) Programs to assess and manage distribution system real loss. (vi) Water conservation program coordination and staffing support. (vii) Other demand management measures that have a significant impact on water use as measured in gallons per capita per day, including innovative measures, if implemented.

2025 Urban Water Management Plan

City of Sierra Madre Page 9-3

IMPLEMENTATION OVER THE PAST FIVE YEARS
The City is committed to implementing water conservation programs and works collaboratively with the San Gabriel Valley Municipal Water District to provide water conservation programs for its residents.

As discussed in Section 9.1.3.1, the City adopted Ordinance 1446 in 2021 which amended the City Municipal Code to include prohibitions on wasteful water use and increase prohibited outdoor irrigation hours.

As discussed in Section 9.1.3.2, the City metered all customer connections, including separate metering for single-family residential, commercial, large landscape and institutional/governmental facilities during the past five years. Furthermore, if there was new development within the City, each facility was individually metered. Service charges for the City are based on the customers’ meter size.

As discussed in Section 9.1.3.3, in 2023, the City updated its water rate structure to include separate two-tiered rates for separate water use categories to promote efficient water usage and conservation.

As discussed in Section 9.1.3.4, the City encourages water conservation through public information programs such as notices in customers’ water bills, notices in newspapers/website, community programs, and local schools. SGVMWD began its O.W.L Community Grant Program in 2017. The program assists school and community/business organizations within its service area to create educational “waterwise” projects.

As discussed in Section 9.1.3.5, the City has an active leak locating program where trained staff uses correlating equipment to actively locate leaks in the distribution system. 2025 Urban Water Management Plan

City of Sierra Madre Page 9-4
As a part of normal operation and maintenance of the water system, City staff does preventive maintenance.

As described in Section 9.1.3.6, the City’s Utilities Director /Water serves as the water conservation coordinator. In addition, various City staff are involved in the City’s water conservation program, including maintenance and operations personnel, and administrative staff who answer billing and usage questions and serve at the front counter at City Hall. The City plans to continue to provide staffing support.

As discussed in Section 9.1.3.7, the City continues to participate in SGVMWD’s regional rebate program which is available to the City’s residential and commercial customers.

IMPLEMENTATION TO ACHIEVE WATER-USE TARGETS
CWC 10631.
(e)(1)(A) For an urban retail water supplier, as defined in Section 10608.12, a narrative description that addresses the nature and extent of each water demand management measure implemented over the past five years. The narrative shall describe the water demand management measures that the supplier plans to implement to achieve its water use targets pursuant to Section 10608.20.

As indicated in Section 5.2.2, the City previously met its 2020 Water Use Target as part of the 2020 Plan. The City met the 2020 Water Use Target through the implementation of the Demand Management Measures discussed in Section 9.1.3. Continued implementation of these Demand Management Measures will assist the City in meeting water use targets and objectives.

2025 Urban Water Management Plan

City of Sierra Madre Page 9-5

REQUIRED DEMAND MANAGEMENT MEASURES

9.1.3.1 WATER WASTE PREVENTION ORDINANCES
Chapter 13.24 of the City Municipal Code is the City’s adopted mandatory water conservation plan, as shown in Appendix I (following the adoption of Ordinance 1446 in 2021). The purpose and intent of Chapter 13.24 of the City’s Municipal Code is to establish a water conservation and supply shortage program that will reduce water consumption within the City’s jurisdiction through conservation, enable effective water supply planning, assure reasonable and beneficial use of water, prevent waste of water, and maximize the efficient use of water within the City to avoid and minimize the effect and hardship of water shortage to the greatest extent possible.

The following are mandatory water conservation regulations:
 Even-numbered addresses are limited to landscape irrigation on Mondays, Thursdays, and Saturdays.
 Odd-numbered addresses and addresses ending in fractions are limited to landscape irrigation on Tuesdays, Fridays, and Sundays.  Lawn, landscaping, and other turf areas cannot be watered between the hours of 6am and 6pm and cannot run-off into the sidewalks or streets.  Washing of sidewalks, walkways, patios, driveways, or parking areas cannot be done with a water hose.
 No water can be used to clean, fill or maintain levels in decorative fountains unless such water is part of a recycling system.
 The use of a hose to wash an automobile is prohibited, 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.
 No outdoor watering within forty-eight hours of a measurable rain event. 2025 Urban Water Management Plan

City of Sierra Madre Page 9-6

9.1.3.2 METERING
CWC 526.
(a) Notwithstanding any other provision of law, an urban water supplier that, on or after January 1, 2004, receives water from the federal Central Valley Project under a water service contract or subcontract… shall do both of the following:
(1) On or before January 1, 2013, install water meters on all service connections to residential and nonagricultural commercial buildings… located within its service area.

CWC 527.
(a) An urban water supplier that is not subject to Section 526 shall do both of the following:
(1) Install water meters on all municipal and industrial service connections located within its service area on or before January 1, 2025.

The City meters all customer connections, including separate metering for residential, commercial, large landscape and institutional/governmental facilities. Furthermore, if there is new development within the City, each facility is individually metered. Service charges for the city are based on the customers’ connection size. Further information regarding the City’s service fees and conservation pricing is provided in Section 9.1.3.3.

In July 2020, the City began monthly billing with the completion of its advanced metering infrastructure (AMI) program. The AMI program will allow the City to gain a more accurate reading its water meter, enhance communications, reduce carbon dioxide emissions, and provide quick leak detection.
2025 Urban Water Management Plan

City of Sierra Madre Page 9-7

9.1.3.3 CONSERVATION PRICING
The City’s water rate structure was updated in 2023 and consists of two components; a monthly fixed meter charge and a monthly water variable rate. The monthly water variable rate includes separate two-tier rates for single family residential, multi-family residential, non-residential, institutional, and irrigation customers. The City’s rate structure is designed to proportionately allocate a greater share of the costs of service to those whose higher water usage generates additional costs to the water utility and promotes efficient water usage and conservation. A water rate sheet showing current rates is provided in Appendix L.

9.1.3.4 PUBLIC EDUCATION AND OUTREACH
The City encourages water conservation through public information programs such as notices in customers’ water bills, notices in newspapers/website, community programs, and local schools. The City participates in water conservation information campaigns to increase customers’ awareness of habits or procedures which waste water. The City also participates in all city events during each year where water conservation materials are distributed at no direct cost to the customers. During community events, literature and water conserving devices are distributed to encourage water conservation. The materials are always available at City Hall.

As a member of SGVMWD, the City participates in SGVMWD’s public information programs. SGVMWD’s website feature video presentations on water related projects, information on the District, and general public education information and rebates.

SGVMWD provide tours designed to educate the public on its pipeline and water delivery system and water related topics (these tours may currently be unavailable due to Covid and security issues).
2025 Urban Water Management Plan

City of Sierra Madre Page 9-8
SGVMWD began its Opportunities for Water Leadership (O.W.L) Community Grant Program in 2017. The program assists school and community/business organizations within its service area to create educational “water-wise” projects. SGVMWD offers grants for community water conservation projects.

9.1.3.5 PROGRAMS TO ASSESS AND MANAGE DISTRIBUTION

SYSTEM REAL LOSS
The City’s estimated water system losses are discussed in Section 4.3. The City’s Water Department has an active leak locating program. Trained staff uses correlating equipment to actively locate leaks in the distribution system. The average response time for responding to a reported leak is about twenty minutes during work hours and about fortyfive minutes maximum during after-hours.

As a part of normal operation and maintenance of the water system, City staff does preventive maintenance. This includes regular checks on valves and meters, and pipeline maintenance. If leaks are encountered or suspected during routine inspection of the system, further evaluation is conducted. If leaks are found, they are repaired. The City will continue these programs to assess and manage distribution system real losses.

9.1.3.6 WATER CONSERVATION PROGRAM COORDINATION AND

STAFFING SUPPORT
The City’s Utilities Director serves as the water conservation coordinator. The water conservation coordinator duties include conducting matters pertaining to the City's water conservation program. In addition, various City staff are involved in the City’s water conservation program, including maintenance and operations personnel, and administrative staff who answer billing and usage questions and serve at the front counter 2025 Urban Water Management Plan

City of Sierra Madre Page 9-9
at City Hall. The staff serve as part-time water conservation coordinators by nature of their duties and responsibilities in performing their job functions.

The Utilities Director oversees all water conservation activities. The Director is responsible for water system infrastructure, water quality, water planning, and water conservation. The Director is responsible for recommending water conservation programs and water conservation ordinance stage provisions to the City Council. The Utilities Director, Water Superintendent, Code Enforcement Officer, Management Analyst and an Administrative Assistant all participate in the enforcement of water conservation.

9.1.3.7 OTHER DEMAND MANAGEMENT MEASURES
Water Conservation Rebate Programs
The City participates in SGVMWD’s regional rebate program which is available to the City’s residential and commercial customers. There are rebates available for indoor plumbing including high efficiency clothes washers, commercial waterless urinal, and high efficiency toilets rebates are subject to change. Rebates are also available for outdoor plumbing include those for weather-based irrigation controllers, rotating sprinkler nozzles, and soil moisture sensor systems. In addition, rain barrel and cistern rebates are also available for its customers. The rebate application, along with a list of qualifying appliances, are listed on the City’s website. SGVMWD’s rebates are subject to change.

2025 Urban Water Management Plan

City of Sierra Madre Page 9-10

DEMAND MANAGEMENT MEASURES FOR WHOLESALE SUPPLIERS
CWC 10631.
(e) Provide a description of the supplier’s water demand management measures. This description shall include all of the following:
(2) For an urban wholesale water supplier, as defined in Section 10608.12, a narrative description of the items in clauses (ii), (iv), (vi), and (vii) of subparagraph (B) of paragraph (1), and a narrative description of its distribution system asset management and wholesale supplier assistance programs.

The City is not a wholesale agency and is not required by DWR to complete Section 9.2. 2025 Urban Water Management Plan

City of Sierra Madre Page 10-1
CHAPTER 10

PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION
LAY DESCRIPTION – CHAPTER 10

PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION
Chapter 10 (Plan Adoption, Submittal, and Implementation) of the City’s 2025 Plan discusses and provides the following:
 The steps the City has performed to adopt and submit its 2025 Plan are detailed  The steps the City has performed to adopt and submit its Water Shortage Contingency Plan are detailed
 The City coordinated the preparation of its 2025 Plan with the Cities of Arcadia, Pasadena, Monrovia, Main Basin Watermaster, Raymond Basin Management Board, and SGVMWD. The City notified these agencies at least sixty (60) days prior to the public hearing of the preparation of the 2025 Plan and invited these agencies to participate in the development of the 2025 Plan.  The City provided a notice of the public hearing to the same agencies regarding the time, date, and place of the public hearing.
 The City published a newspaper notification of the public hearing, once a week for two successive weeks
 The City conducted a public hearing to discuss and adopt the City’s 2025 Plan and City’s Water Shortage Contingency Plan.
 Within 30 days of adoption, the City submitted the 2025 Plan and Water Shortage Contingency Plan to the California Department of Water Resources.  Within 30 days of adoption, the City submitted all data tables associated with the 2025 Plan to the California Department of Water Resources. 2025 Urban Water Management Plan

City of Sierra Madre Page 10-2
 Within 30 days of adoption, the City submitted a copy of the 2025 Plan to the State of California Library.
 Within 30 days of adoption, the City submitted a copy of the 2025 Plan (and Water Shortage Contingency Plan) to the County of Los Angeles Registrar / Recorders office and the City Clerk’s Office.
 Within 30 days after submittal of the 2025 Plan to the California Department of Water Resources, the City made the 2025 Plan (including the Water Shortage Contingency Plan) available at the City Clerk’s Office and on the City’s website.  The steps the City will perform to amend the 2025 Plan and/or the Water Shortage Contingency Plan, if necessary, are provided.

PLAN COMPLETION TIMELINE
The data provided in the City’s 2025 Plan and the Water Shortage Contingency Plan is provided on a FY basis through June 30, 2025 (as discussed in Section 2.5).

NOTICE OF PLAN PREPARATION
CWC 10621.
(b) Every urban water supplier required to prepare a plan shall … at least 60 days prior to the public hearing on the plan … notify any city or county within which the supplier provides waters supplies that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan.

As discussed in Section 2.4.2., the City coordinated the preparation of the 2025 Plan with the Main Basin Watermaster, Raymond Basin Management Board, and SGVMWD. The City notified these agencies, as well as to the cities and county within which the City 2025 Urban Water Management Plan

City of Sierra Madre Page 10-3
provides water supplies, at least sixty (60) days prior to the public hearing of the preparation of the 2025 Plan and invited them to participate in the development of the Plan. A copy of the notification letters sent to these agencies is provided in Appendix D.

NOTICE OF PUBLIC HEARING
CWC 10642.
…Prior to adopting either, the urban water supplier shall make both the plan and the water shortage contingency plan available for public inspection and shall hold a public hearing or hearings thereon. Prior to any of these hearings, notice of the time and place of the hearing shall be published within the jurisdiction of the publicly owned water supplier pursuant to Section 6066 of the Government Code. The urban water supplier shall provide notice of the time and place of a hearing to any city or county within which the supplier provides water supplies.

Government Code 6066.

Publication of notice pursuant to this section shall be once a week for two successive weeks.

Two publications in a newspaper published once a week or oftener, with at least five days intervening between the respective publication dates not counting such publication dates, are sufficient. The period of notice commences upon the first day of publication and terminates at the end of the fourteenth day, including therein the first day.

The City provided a notice of the public hearing to the Main Basin Watermaster, Raymond Basin Management Board, SGVMWD, and the County of Los Angeles, and the Cities of Sierra Madre, Arcadia, Pasadena, and Monrovia. The notice includes the time and place of the public hearing. Copies of the notice of the public hearing are provided in Appendix D. Table 10-1 summarizes the agencies which were provided notifications by the City.

The City encouraged the active involvement of the population within its service area prior to and during the preparation of the Plan. Pursuant to Section 6066 of the Government Code, the City published a notice of public hearing in the newspaper during the weeks of June 10, 2026 and June 17, 2026. A notice of public hearing was also provided to the City Clerk’s office and was posted throughout the City of Sierra Madre and on the City’s 2025 Urban Water Management Plan

City of Sierra Madre Page 10-4
website. A copy of the published notice is provided in Appendix D. To ensure that the draft 2025 Plan and the draft Water Shortage Contingency Plan were available for review, the City placed a copy at the City Clerk’s Office located at City Hall and made a copy available for review on its website.

PUBLIC HEARING AND ADOPTION
CWC 10642.

Each urban water supplier shall encourage the active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of both the plan and the water shortage contingency plan. Prior to adopting either, the urban water supplier shall make both the plan and the water shortage contingency plan available for public inspection and shall hold a public hearing or hearings thereon…. After the hearing or hearings, the plan or water shortage contingency plan shall be adopted as prepared or as modified after the hearing or hearings.

Government Code Section 7291
…every local public agency… serving a substantial number of non- English-Speaking people, shall employ a sufficient number of qualified bilingual persons in public contact positions or as interpreters to assist those in such positions, to ensure provision of information and services in the language of the non-English-speaking person.

Prior to adopting the draft 2025 Plan and the draft Water Shortage Contingency Plan, the City held a public hearing on June 24, 2026 which included input from the community regarding the City’s draft 2025 Plan and the draft Water Shortage Contingency Plan.

Following the public hearing, the City adopted both the draft 2025 Plan and the draft Water Shortage Contingency Plan (included in Chapter 8). A copy of the resolution adopting the 2025 Plan and the Water Shortage Contingency Plan is provided in Appendix M. 2025 Urban Water Management Plan

City of Sierra Madre Page 10-5

PLAN SUBMITTAL
CWC 10621.
(e) .Each urban water supplier shall update and submit its 2025 plan to the department by July 1, 2026…
CWC 10635.
(c) The urban water supplier shall provide that portion of its urban water management plan prepared pursuant to this article to any city or county within which it provides water supplies no later than 60 days after the submission of its urban water management plan.

CWC 10644.
(a) (1) An urban water supplier shall submit to the department, the California State Library, and any city or county within which the supplier provides water supplies a copy of its plan no later than 30 days after adoption.

The City’s submittal process for its 2025 Plan and the Water Shortage Contingency Plan is discussed below.

SUBMITTING A UWMP AND WATER SHORTAGE

CONTINGENCY PLAN TO DWR
Within 30 days of adoption of the 2025 Plan by the City Council, the City submitted the adopted 2025 Plan (including the Water Shortage Contingency Plan) to DWR. The 2025 Plan and Water Shortage Contingency Plan were submitted through DWR’s “Water Use Efficiency (WUE) Data Portal” website.

DWR developed a checklist which was used by the City to assist DWR with its determination that the City’s 2025 Plan has addressed the requirements of the California Water Code. The City has completed the DWR checklist by indicating where the required CWC elements can be found within the City’s 2025 Plan (See Appendix B). 2025 Urban Water Management Plan

City of Sierra Madre Page 10-6

ELECTRONIC DATA SUBMITTAL
CWC 10644.
(a)(2) The plan, or amendments to the plan, submitted to the department …shall be submitted electronically and shall include any standardized forms, tables, or displays specified by the department.

Within 30 days of adoption of the 2025 Plan, the City submitted all data tables associated with the 2025 Plan through DWR’s “Water Use Efficiency Data Portal” website.

SUBMITTING A UWMP, INCLUDING WSCP, TO THE

CALIFORNIA STATE LIBRARY
Within 30 days of adoption of the 2025 Plan by the City Council, a copy (CD or hardcopy) of the 2025 Plan was submitted to the State of California Library. A copy of the letter to the State Library will be maintained in the City’s file. The 2025 Plan will be mailed to the following address if sent by regular mail:

California State Library
Government Publications Section
Attention: Coordinator, Urban Water Management Plans
P.O. Box 942837
Sacramento, CA 94237-0001

2025 Urban Water Management Plan

City of Sierra Madre Page 10-7
The 2025 Plan will be mailed to the following address if sent by courier or overnight carrier:

California State Library
Government Publications Section
Attention: Coordinator, Urban Water Management Plans
900 N Street
Sacramento, CA 95814

SUBMITTING A UWMP TO CITIES AND COUNTIES
Within 30 days of adoption of the 2025 Plan (including the Water Shortage Contingency Plan) by the City Council, a copy of the 2025 Plan was submitted to the County of Los Angeles Registrar / Recorders office and the City Clerk’s Office. A copy of the letter to the County of Los Angeles will be maintained in the City’s file.

PUBLIC AVAILABILITY
CWC 10645.
(a) Not later than 30 days after filing a copy of its plan with the department, the urban water supplier and the department shall make the plan available for public review during normal business hours.
(b) Not later than 30 days after filing a copy of its water shortage contingency plan with the department, the urban water supplier and the department shall make the plan available for public review during normal business hours.

Within 30 days after submittal of the 2025 Plan to DWR, the City made the 2025 Plan (including the Water Shortage Contingency Plan) available at the City Clerk’s Office located at City Hall during normal business hours and on the City’s website. 2025 Urban Water Management Plan

City of Sierra Madre Page 10-8

NOTIFICATION TO PUBLIC UTILITIES COMMISSION
CWC 10621.
(c) An urban water supplier regulated by the Public Utilities Commission shall include its most recent plan and water shortage contingency plan as part of the supplier’s general rate case filings.

The City is not regulated by the California Public Utilities Commission.

PLAN IMPLEMENTATION
CWC 10643.

An urban water supplier shall implement its plan adopted pursuant to this chapter in accordance with the schedule set forth in its plan.

The City will implement any schedules set forth in the adopted 2025 Plan.

AMENDING AN ADOPTED UWMP OR WATER SHORTAGE CONTINGENCY
PLAN
CWC 10621.
(d) The amendments to, or changes in, the plan shall be adopted and filed in the manner set forth in Article 3 (commencing with Section 10640).

CWC 10644.
2025 Urban Water Management Plan

City of Sierra Madre Page 10-9
(a)(1) Copies of amendments or changes to the plans shall be submitted to the department, the California State Library, and any city or county within which the supplier provides water supplies within 30 days after adoption.

The City’s amendment process for its 2025 Plan is discussed below.

AMENDING A UWMP OR WSCP
If the City amends the adopted 2025 Plan, the City will conduct a similar notification and public hearing process for the amended 2025 Plan as discussed in Sections 10.2, 10.3, and 10.4. The amended Plan will undergo adoption by the City’s governing board. Within 30 days of adoption, the amended Plan will then be submitted to DWR, the State of California Library, the County of Los Angeles Registrar / Recorders office, and the City Clerk’s Office.

SUBMITTING REVISED WATER SHORTAGE CONTINGENCY
PLAN
CWC 10644.
(a) If an urban water supplier revises its water shortage contingency plan, the supplier shall submit to the department a copy of its water shortage contingency plan prepared…no later than 30 days after adoption, in accordance with protocols for submission and using electronic reporting tools developed by the department.

If the City amends the adopted 2025 Plan (including the Water Shortage Contingency Plan), the amended Plan (and Water Shortage Contingency Plan) will undergo adoption by the City’s governing board. Within 30 days of adoption, the amended Plan (and Water Shortage Contingency Plan) will then be submitted to DWR, the State of California Library, the County of Los Angeles Registrar / Recorders office, and the City Clerk’s Office.
2025 Urban Water Management Plan

City of Sierra Madre Page 10-10

CALIFORNIA DEPARTMENT OF WATER RESOURCES REVIEW OF

SUBMITTED PLANS
As discussed in Section 1.5, DWR will review the 2025 Plans to ensure that they address the California Water Code requirements. Following DWR’s review, water suppliers will be notified of the results of the review via a formal review letter. These review letters will also be available to the public on DWR’s WUEdata portal. In cases where DWR finds that a Plan does not properly address item(s) in the Water Code, DWR will reach out to the water supplier to discuss needed corrections and correction procedures.

2025 Urban Water Management Plan

City of Sierra Madre Page 10-11

SUBMITTAL TABLES
The applicable standardized Submittal Tables referenced within Chapter 10 are provided below.

SUBMITTAL TABLE 10-1: NOTIFICATION TO CITIES AND

COUNTIES
Table 10-1 Notification to Cities and Counties
City Name 60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Pasadena Yes Yes
Monrovia Yes Yes
Arcadia Yes Yes
Sierra Madre Yes Yes
County Name
Drop Down List
60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Los Angeles County Yes Yes
Submittal Table 10-1 Retail: Notification to Cities and Counties
Water Code Section 10621(b) and 10642
Add additional rows as needed
Add additional rows as needed
NOTES:

Service Layer Credits: Sources: Esri, HERE,
Garmin, USGS, Intermap, INCREMENT P,
NRCan, Esri Japan, METI, Esri China (Hong
Kong), Esri Korea, Esri (Thailand), NGCC, (c)
OpenStreetMap contributors, and the GIS User
Community
Document Path: J:\jn2741\SierraMadre_ServiceArea.mxd

CITY OF SIERRA MADRE

WATER SERVICE AREA
Ü
0 0.5 1
Miles
FIGURE 1
Service Layer Credits: Sources: Esri, HERE,
Garmin, USGS, Intermap, INCREMENT P,
NRCan, Esri Japan, METI, Esri China (Hong
Kong), Esri Korea, Esri (Thailand), NGCC, (c)
OpenStreetMap contributors, and the GIS User
Community
Unincorporated
Arcadia
Monrovia
Pasadena
Pasadena
Sierra Madre
East Pasadena
Document Path: J:\jn2741\SierraMadre_ServiceArea_CityBoundaries.mxd

CITY OF SIERRA MADRE

WATER SERVICE AREA

AND CITY BOUNDARIES
Ü
0 0.5 1
Miles
FIGURE 2
Water System Boundary
City Boundary
Santa Anita
Subarea
Monk Hill
Subarea
Pasadena
Subarea
71UV0
2UV
1UV9
11UV0
13UV4
21§¨¦0
Document Path: J:\jn2741\SierraMadre_RaymondBasin_Location.mxd

CITY OF SIERRA MADRE
RAYMOND BASIN LOCATION Ü 0 0.5 1
Miles
FIG
U
R
E 3
Basin Boundary
Water System Boundary
71UV0
6UV6
7UV2
6UV0
5UV7
7UV1
13UV4
11UV0
1UV9
21§¨¦0
60§¨¦5
71§¨¦0
5§¨¦
10 §¨¦
Document Path: J:\jn2741\SierraMadre_SGBasin_Location.mxd

CITY OF SIERRA MADRE
MAIN SAN GABRIEL BASIN LOCATION Ü 0 1.5 3
Miles
FIG
U
R
E 4
Basin Boundary
Water System Boundary

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX A

DWR STANDARDIZED TABLES
CA1910148 City of Sierra Madre 3,656 2,461
Total 3,656 2,461
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
Submittal Table 2-1 Retail: Public Water Systems
Add additional rows as needed
NOTES:

Volume of Water
Supplied 2025 (AF)
DWR NOTES:

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

Select
One
Name of Regional Alliance or
RUWMP (Drop Down List)
NOTES:

Submittal Table 2-2: Plan Identification
Type of Plan
Individual UWMP
If Water Supplier is also a member of a SB X7-7
Regional Alliance, select name from the dropdown.

Regional Urban Water Management Plan (RUWMP)
If Supplier selected RUWMP, select name from
the drop-down.

Supplier is a wholesale supplier
Supplier is a retail supplier
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Unit AF
Submittal Table 2-3: Supplier Identification
Type of Supplier (select one or both)
Fiscal or Calendar Year (select one)
If using fiscal years provide month and date that the fiscal year begins (mm/dd)
Units of measure used in UWMP
(Select from the drop down list).
07/01
DWR NOTES:

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

NOTES:

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

Wholesale Water Supplier Name
Add additional rows as needed
San Gabriel Valley Municipal Water District
NOTES:
2025 2030 2035 2040 2045 2050(opt)
10,878 10,900 10,922 10,972 11,022 11,073
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
NOTES:

DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3. 2025 Actual Water Use
Add additional rows as needed
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)
Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be
recognized by the WUEdata online submittal tool
Potable or Non-Potable
(OPTIONAL)
Drop down list
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 opt (AF)
Single Family Potable 1,596 1,598 1,606 1,612 1,620
Multi-Family Potable 229 229 230 231 232
Commercial Includes Institutional Potable 226 227 228 229 230 Landscape Potable 50 50 50 51 51
Distribution System Water Loss Potable 415 416 418 420 422 2,516 2,520 2,532 2,543 2,555
0 0 0 0 0
2,516 2,520 2,532 2,543 2,555
Submittal Table 4-2 Retail: Total Uses for Potable, and Non-Potable Water — Projected Water Code Section 10631(d)(1)
Projected Water Use
(Report To the Extent that Records are Available)
Additional Description
(as needed)
NOTES:

Subtotal Non-Potable
Subtotal Potable
Add additional rows as needed.

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

Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) NOTES:

DWR NOTES: Additional guidance is provided in Appendix K.

NOTES:

Report submittal status for all five years for each Public Water System as available.

Add rows as needed
2028 Real Water Loss
Standard per Unit per
day
Units for Real Water Loss
Drop down list
Number of Units
(Connections or Miles corresponding
with units selected)
Volume of Total Real
Loss
(from AWWA Water
Loss Audit)
(AF)
2028 Apparent Water Loss
Standard per Unit
per Day
Units for
Apparent Water
Loss
Number of
Connections
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
CA1910148 Yes 26.8
Gallons per
Service
Connection per
Day (GPSCD)
3824 411.66 96.1 40.3
Gallons per
Service
Connection per
Day (GPSCD)
3824 122.149 28.5
Gallons per
Service
Connection per
Day (GPSCD)
Gallons per
Service
Connection per
Day (GPSCD)
Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
NOTES:

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

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

Most Recent AWWA Water Loss Audit
Real Water
Loss Per Unit
per Day
Most Recent AWWA Water Loss Audit
Apparent Water
Loss Per Unit per
Day
State Water Board Standard State Water Board Standard
Actual 2025 GPCD
(From SB X7-7
Compliance Form)
Did Supplier meet
the 2020 Target in
2025?
No Individual
Target
206 199 Yes NA
Submittal Table 5-1 Retail: SB X7-7 2020 Target Progress Water Code Section 10608.40
NOTES:

Did Supplier
Achieve Targeted
Reduction for
2020?
Actual 2020
GPCD
2020 Target
Regional
Alliance Target
or Individual
Target?
Drop down list
DWR NOTES:

Suppliers calculating a 2025 GPCD will need to complete and submit SB X 7-7 Compliance Tables to verify the use of SB X7-7 Methodologies.

Suppliers that were part of a merger or consolidation since 2020 see Chapter 5 and Appendix P for guidance.

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

Proceed to the next table.

Only for suppliers that did not meet
the Target in 2020
See DWR NOTES below. Was Supplier part of
a merger or
consolidation since
2020?
Groundwater Type
Drop Down List
May use each category
multiple times
Potable or
Non-Potable
(OPTIONAL)
Drop down list
Location or Basin Name 2021 (AF) 2022 (AF) 2023 (AF) 2024 (AF) 2025 (AF) Alluvial Basin Potable Raymond Basin 2472 2406 1989 2148 2461 Fractured Rock Potable West Tunnel 0 0 0 0 0
2,472 2,406 1,989 2,148 2,461
Add additional rows as needed
Submittal Table 6-1 Retail: Groundwater Volume Pumped
Water Code Section 10631(4) and 10631(4)(c)
DWR NOTES:

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

NOTES
Total
Check the box if the Supplier does not pump groundwater.

Proceed to the next table.

Check the box if all or part of the groundwater described below is desalinated. (OPTIONAL) Name of Wastewater
Collection Agency
Wastewater
Volume
Metered or
Estimated?

OPTIONAL
Drop Down List
Volume of
Wastewater Collected
from UWMP Service
Area 2025 (AF)
Name of Wastewater
Treatment Plant (WWTP) and
Place ID Number
Drop down list
Is WWTP
Located Within
UWMP Area?
Drop Down List
LACSD Estimated 810
A.K. Warren Water Resource
Facility, Place ID 234156 No
LACSD Estimated 30
Whittier Narrows Water
Reclamation Plant, Place ID No
840
Check the box if there is no wastewater collection system.

Proceed to the next table.

NOTES:

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

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

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

Add additional rows as needed
Treatment
Level
Drop down list
Volume
(AF)
Treatment
Level
Drop down list
Volume
(AF)
Treatment
Level
Drop down list
Volume
(AF)
Treatment
Level
Drop down list
Volume
(AF)
Treatment
Level
Drop down list
Volume
(AF)
Name of other
entity
0 - 0 0 0 0 0
2025 Outcomes of Treated Wastewater
Check the box if no wastewater is treated or disposed of within the UWMP service area.

Proceed to the next table.

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

Total
2025 Volume
of Wastewater
Received from
UWMP Service
Area
(As Reported
in Submittal
Table 6-2 R)
(AF)
Water Recycled Within
UWMP Service Area
(enter data as applicable)
Submittal Table 6-3 Retail: Wastewater Treatment and Outcomes Within UWMP Service Area Water Code Section 10633(b)
DWR NOTES:

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

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

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

Water Recycled Outside
of UWMP Service Area
(enter data as applicable)
Effluent Discharge that is
not a Permitted Recycled
Water Use
(enter data as applicable)
Required Discharge for
Instream Flow
(enter data as applicable)
Delivered to Another Entity for Additional
Treatment
(enter data as applicable)
Add additional rows as needed
Volume Narrative page number
(OPTIONAL)
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
Check box if recycled water is not used and is not planned for use within the service area of the supplier. The supplier will only complete the column on "Potential Recycled Water Use" and submit an accompanying narrative on the feasibility of that potential recycled water use.

Submittal Table 6-4 Retail: Recycled Water Direct Beneficial Uses Within Service Area Water Code Section 10633 (c),(d),(e)
Potential Recycled Water Use
Name(s) of Facility/ies Producing (Treating) the Recycled Water (OPTIONAL) :

Name of Supplier Operating the Recycled Water Distribution System (OPTIONAL) :

Volume of Supplemental Water Added in 2025 (OPTIONAL) :

Source of 2025 Supplemental Water (OPTIONAL) :

Total
Use Type
Drop down list
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop down list
Additional Information
(as needed)
Add additional rows as needed
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.

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

Potential recycled water use: a description of the feasibility of these uses must be included in the narrative.

Multiple Producers: If you have multiple recycled water producers, submit a separate table for each.

NOTES:
2025 (AF) 2030 (AF) 2050 (AF) 2035
(AF)
2040
(AF)
2045
(AF)
Subtotal Potable
Subtotal Non-Potable
2020 Projection
for 2025 (AF)
2025 Actual
Use (AF)
0 0
Submittal Table 6-5 Retail: 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual
Water Code Section 10633(e)
Check the box if recycled water was not used in 2025 nor previously projected for use in 2020.

Proceed to the next table.

Add additional rows as needed
NOTES:

Total
DWR NOTES:

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure reported in Submittal Table 2-3
Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.

Use Type
Drop Down list
Section 6.2.5
Name of Action Description
Expected Increase in Recycled
Water Use (AF)
0 0
Total (AF)
DWR NOTES:

Units of measure (AF, CCF, MG) MUST remain consistent with units reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.

The unit conversion to Acre Feet addresses the Water Code's requirement that this value be provided in acre-feet.

NOTES:

Submittal Table 6-6 Retail: Methods to Encourage Future Recycled Water Use Water Code Section 10633(f)
Check the box if the Supplier does not plan to expand recycled water use in the future. Supplier will not complete the table below but will provide narrative explanation.

Provide page location of narrative in the UWMP
Add additional rows as needed
Unit Conversion to AF
Planned Implementation
Year
Section 6.2.10
Drop Down
List
(yes/no)
If Yes, Supplier Name
Construct
Groundwater
Production Well
Yes City of Arcadia
Construction of a 2,000
gpm well in the Main
Basin with up to 1,000
gpm to the City of Sierra
Madre
Potable 2027 All Year Types 1,600
Rehabilitation of
Water Supply Wells No
Construction or
replacement of
groundwater wells
Potable Ongoing All Year Types
Planned for Use
in Year Type
Drop Down List
NOTES:

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

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

Check the box if some or all of the supplier's future water supply projects or programs are not compatible with this table and are described in a narrative format.

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

Proceed to the next table.

Planned
Implementation
Year
Add additional rows as needed
Joint Project with other
suppliers? Expected
Increase in
Water Supply
to Supplier
(This may be
a range) (AF)
Provide page location of narrative in the UWMP
Name of Future
Projects or Programs
Additional Description
(as needed)
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Water Supply
Drop down list
May use each category multiple
times. These are the only water
supply categories that will be
recognized by the WUEdata online
submittal tool
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Actual Volume
(AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Groundwater (not desalinated) Raymond Basin Potable 2,461 Groundwater (not desalinated) West Tunnel Potable 0
2,461 0
0 0
2,461 0
Submittal Table 6-8 Retail: Water Supplies — Actual
Water Code Section 10631(b)
2025
NOTES:

DWR NOTES:

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

Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.

Add additional rows as needed
Total
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)
Water Supply
Reasonably
Available
Volume
(AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume
(AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Groundwater (not
desalinated)
Raymond
Basin
Potable 916 920 932 943 955
Groundwater (not
desalinated)
West
Tunnel Potable 0 0 0 0 0
Groundwater (not
desalinated) Main Basin Potable 1,600 1,600 1,600 1,600 1,600 2,516 0 2,520 0 2,532 0 2,543 0 2,555 0
0 0 0 0 0 0 0 0 0 0
2,516 0 2,520 0 2,532 0 2,543 0 2,555 0
2050 (opt)
Add additional rows as needed
Total
NOTES:
2030 2035 2040 2045
Subtotal Non-Potable
Subtotal Potable
DWR NOTES:

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

Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.

Submittal Table 6-9 Retail: Water Supplies — Projected Water Code Section 10631 (b) Projected Water Supply (Report to the Extent Practicable) Drop down list
May use each category
multiple times. These are the
only water supply categories
that will be recognized by the
WUEdata online submittal
tool
Additional
Detail on
Water
Supply
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Water Delivery Product
drop down list
(If delivering more than one type of product recommend
using Table O-1C)
Retail Potable
Deliveries
Start Date of Reporting Period 7/1/2024
End Date of Reporting Period 6/30/2025
Is upstream embedded energy in the values reported? No
Units of Measure for Water AF
Total Utility
See DWR NOTES
Hydropower Net Utility
2,461 2,461
3,356,522 3,356,522
4,186 - 4,186
Quantity of Self-Generated Renewable Energy
0 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Combination of Estimates and Metered Data
Data Quality Narrative:

Narrative:

Volume of Water Entering Process
Energy Consumed (kWh)
Energy Intensity (kWh/vol. converted to MG)
Optional Submittal Table O-1B: Recommended Energy Reporting - SINGLE DELIVERY PRODUCT - TOTAL UTILITY

Only for Water Delivery Products Under the Urban Water Supplier's Operational Control
Sum of All Water
Management Processes
Non-Consequential Hydropower
DWR NOTES:

NOTES:

The total energy consumption includes energy associated with operating groundwater production wells and booster pumps to deliver water in the distribution system. Energy consumption is associated with operating groundwater water treatment. Energy consumption is also associated with plant lighting and air conditioning, and operating the Supervisory Control and Data Acquisition (SCADA) system and chlorination injection pumps. % of Average Supply
Average Year 2020 100%
Single-Dry Year 2018 93.7%
Consecutive Dry Years 1st Year 2012 112.3%
Consecutive Dry Years 2nd Year 2013 118.8%
Consecutive Dry Years 3rd Year 2014 104.5%
Consecutive Dry Years 4th Year 2015 88.8%
Consecutive Dry Years 5th Year 2016 92.4%
2686
2841
NOTES:
2499
2125
2211
DWR NOTES: Supplier may use multiple versions of Submittal Table 7-1 R if different water sources have different base years and the supplier chooses to report the base years for each water source separately. If a Supplier uses multiple versions of Submittal Table 7-1 R, in the "Note" section of each submittal table, state that multiple versions of Submittal Table 7-1 R are being used and identify the particular water source that is being reported in each submittal table.

Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table reports the units of measure reported in Submittal Table 2-3. 2392
2241
Year Type
Base Year
If not using a
calendar year, type
in the last year of
the fiscal, water
year, or range of
years, for example,
water year 2024-
2025, use 2025
Optional Submittal Table 7-1 Retail: Basis of Water Year Data (Reliability Assessment) Available Supplies if
Year Type Repeats
Check the box if quantification of available supplies
is not compatible with this table and is provided
elsewhere in the UWMP.

Location: [insert location from UWMP]
Volume Available (AF)
Quantification of available supplies is provided in this table as either volume only, percent only, or both.
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals
(autofill from Submittal
Table 6-9 R)
2,516 2,520 2,532 2,543 2,555
Use totals
(autofill from Submittal
Table 4-2 R)
2,516 2,520 2,532 2,543 2,555
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised Surplus/(shortfall)
OPTIONAL Planned WSCP Actions
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
NOTES:

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

Supply totals 2,358 2,361 2,373 2,383 2,394
Use totals 2,358 2,361 2,373 2,383 2,394
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised
Surplus/(shortfall)
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF)
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

NOTES
2050 (AF)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals 2,825 2,830 2,843 2,856 2,869
Use totals 2,825 2,830 2,843 2,856 2,869
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,988 2,993 3,007 3,020 3,035
Use totals 2,988 2,993 3,007 3,020 3,035
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,629 2,633 2,645 2,657 2,669
Use totals 2,629 2,633 2,645 2,657 2,669
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,235 2,239 2,249 2,259 2,270
Use totals 2,235 2,239 2,249 2,259 2,270
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,326 2,329 2,340 2,351 2,362
Use totals 2,326 2,329 2,340 2,351 2,362
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
NOTES:

First year
Second year OPTIONAL WSCP Actions
Third year
Fifth year
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

OPTIONAL Planned WSCP Actions
OPTIONAL Planned WSCP Actions
Fourth year OPTIONAL Planned WSCP Actions
Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
2026 Total
Total Water Use (AF) 2,775
Total Supplies (AF) 2,686
Surplus/Shortfall w/o WSCP Action (89)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 89
Revised Surplus/(shortfall) 0
2027 Total
Total Water Use (AF) 2,949
Total Supplies (AF) 2,841
Surplus/Shortfall w/o WSCP Action (108)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 108
Revised Surplus/(shortfall) 0
2028 Total
Total Water Use (AF) 2,605
Total Supplies (AF) 2,499
Surplus/Shortfall w/o WSCP Action (106)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 106
Revised Surplus/(shortfall) 0
2029 Total
Total Water Use (AF) 2,225
Total Supplies (AF) 2,125
Surplus/Shortfall w/o WSCP Action (100)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 100
Revised Surplus/(shortfall) 0
2030 Total
Total Water Use (AF) 2,326
Total Supplies (AF) 2,211
Surplus/Shortfall w/o WSCP Action (115)
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF) 115
Revised Surplus/(shortfall) 0
NOTES:

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

Submittal Table 7-5 Retail: Five-Year Drought Risk
Assessment
Water Code Section 10635(b)(3)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
Standard
Shortage
Levels
Percent
Shortage Range
Suppliers
Shortage
Levels
Percent
Shortage
Range
1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 >50%
Submittal Table 8-1: Cross-reference for Standard vs
Supplier Shortage Levels
Water Code Section 10632(a)(3)(B)
Check the box if the Supplier uses the
Standard six levels of water shortage.

Proceed to the next table.

NOTES:

As noted on Table 8-3, the City plans to implement demand reduction measures in the event water supplies from existing sources are not sufficient to meet anticipated demands.

Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the
shortage gap?
0 Shortage
Level
Supply Augmentation Methods and
Other Actions by Water Supplier
Drop down list
These are the only categories that will
be accepted by the WUEdata online
submittal tool
Additional Explanation or Reference
(OPTIONAL)
Yes
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range)
(AF)
1 Other - Prohibit use of potable
water for washing hard surfaces Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Water Features - Restrict water use
for decorative water features, such
as fountains
Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 CII - Restaurants may only serve
water upon request
Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Other - Customers must repair
leaks, breaks, and malfunctions in a
timely manner
Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Landscape - Limit landscape
irrigation to specific times Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Landscape - Restrict or prohibit
runoff from landscape irrigation Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Other - Require automatic shut of
hoses Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
1 Landscape - Other landscape
restriction or prohibition Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Prohibit landscape irrigation within 48 hours
after measurable precipitation Yes
1 Landscape - Prohibit certain types
of landscape irrigation Volume
Collective reduction
from all Shortage
Level 1 actions is up
to 116 AFY
Yes
2 Other Volume
Collective reduction
from Shortage Level
1 plus all Shortage
Level 2 actions is up
to 232 AFY
All actions under Shortage Level 1 Yes
3 Other Volume
Collective reduction
from Shortage Level
2 plus all Shortage
Level 3 actions is up
to 348 AFY
All actions under Shortage Level 2 Yes
4 Other Volume
Collective reduction
from Shortage Level
3 plus all Shortage
Level 4 actions is up
to 464 AFY
All actions under Shortage Level 3 Yes
5 Other Volume
Collective reduction
from Shortage Level
4 plus all Shortage
Level 5 actions is up
to 580 AFY
All actions under Shortage Level 4 Yes
6 Other Volume
Collective reduction
from Shortage Level
5 plus all Shortage
Level 6 actions is
greater than 580 AF
All actions under Shortage Level 5 Yes
Shortage
Level
Demand Reduction Actions
Drop down list
These are the only categories that will
be accepted by the WUEdata online
submittal tool. Select those that apply.

Additional Explanation or Reference
(OPTIONAL)
NOTES:

Is the Supplier completing this table using the standard six levels? (yes/no) Submittal Table 8-3 Retail: Demand Reduction Actions
Water Code Section 10632(a)(4)(B),(D), and (E)
Add additional rows as needed
How much is this going to reduce the
shortage gap?
City Name 60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Pasadena Yes Yes
Monrovia Yes Yes
Arcadia Yes Yes
Sierra Madre Yes Yes
County Name
Drop Down List
60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Los Angeles County Yes Yes
Submittal Table 10-1 Retail: Notification to Cities and Counties
Water Code Section 10621(b) and 10642
Add additional rows as needed
Add additional rows as needed
NOTES:

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX B

COMPLETED PLAN CHECKLIST
Retail
(x = required)
Wholesale
(x = required
)
Order 2025 Guidebook Location Water Code Section Summary as Applies to UWMP Subject Relevant
Submittal Table
2025 UWMP Location
x x 1 Chapter 1 10615
A plan shall describe and evaluate sources of supply, reasonable and practical efficient uses, reclamation and demand management activities.

Introduction and overview n/a Chapter 1 Lay Description x x 1 Chapter 1 10630.5
Each plan shall include a simple description of the Supplier’s plan including water availability, future requirements, a strategy for meeting needs, and other pertinent information. Additionally, a Supplier may also choose to include a simple description at the beginning of each chapter.

Plan preparation n/a Beginning of each Chapter
x x 2.1 Section 2.1 10620(b) Every person that becomes a Supplier shall adopt UWMP within one year after it has become a Supplier. Plan preparation n/a Section 2.1 x n/a 2.5 Section 2.5 10644
Supplier shall report the Public Water Systems number, volume of delivered water, and number of connections that are included in this UWMP.

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

Plan preparation 2-2 Sections 2.2 and 2.5
x x 2.5 Section 2.5 10644
Supplier shall report whether the data is in fiscal or calendar years and the units of measure used for reporting water volumes.

Plan preparation 2-3 Sections 2.3 and 2.5
x x 2.4 Section 2.4 10642
Provide supporting documentation that the Supplier has encouraged active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of the plan and contingency plan.

Plan preparation n/a Section 2.4
x x 2.4 Section 2.4.2 10620(d)(3)
Coordinate the preparation of its plan with other appropriate agencies in the area, including other Suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable.

Plan preparation n/a Section 2.4.2
x n/a 2.4 Section 2.4.1 10631(h)
Retail Suppliers will include documentation that they have provided their Wholesale Supplier(s)—if any—with water use projections from that source.

Plan preparation 2-4 R Sections 2.4.1 and 2.5
n/a x 2.4 Section 2.4.1 10631(h)
Wholesale Suppliers will provide their Suppliers with identification and quantification of the existing and planned sources of water available from the Wholesale Supplier to the Supplier during various water year types.

Plan preparation 2-4 W n/a
x x 3 Chapter 3.0 10631(a) Describe the Supplier service area. System description n/a Section 3.1 and 3.2 x x 3.3 Section 3.3 10631(a) Describe the climate of the Supplier’s service area. System description n/a Section 3.3 x x 3.4 Section 3.4.1 10631(a)
Provide the current and projected service area populations for 2030, 2035, 2040, 2045 and optionally 2050.

System description 3-1 Sections 3.4 and 3.6
x x 3.4 Section 3.4.2 10631(a)
Describe other social, economic, and demographic factors affecting the Supplier’s water management planning.

System description n/a Section 3.4.2
x x 3.5 Section 3.5 10631(a)
Describe the land uses within the service area… include the current and projected land uses within the existing or anticipated service area affecting the Supplier’s water management planning. Describe the land uses within the service area.

System description and
baselines
n/a Section 3.5
x Optional 4.2 Sections 4.2.3 and 4.2.4 10631(d)(1) Quantify past, current, and projected water use, identifying the uses among water use sectors. System water use 4-1 and 4-2 Sections 4.2 and 4.4 x Optional 4.3 Section 4.3.1 10631(d)(3)(A) Report the distribution system water loss for each of the five years preceding the plan update. System water use 4-5 Sections 4.3 and 4.4 x n/a 4.3 Section 4.3.2 10631(d)(3)(C) Retail Suppliers shall provide data to show the distribution loss standards were met. System water use 4-6 Sections 4.3 and 4.4 x n/a 4.2 Section 4.2.5.4 10631.1(a)
Include projected water use needed for lower income housing projected in the service area of the Supplier.

System water use 4-3 Sections 4.2.5.5 and 4.4
x n/a 4.2 Section 4.2.5.3 10631(d)(4)(A)
In projected water use, include estimates of water savings from adopted codes, plans, and other policies or laws.

System water use 4-3 Section 4.2.5.3
x n/a 4.2 Section 4.2.5.3 10631(d)(4)(B) Provide citations of codes, standards, ordinances, or plans used to make water use projections. System water use 4-3 Sections 4.2.5.3 and 9.1 x n/a 4.2 Section 4.2.5.3 10631(d)(4)(B)(ii)
To the extent that a Supplier reports the information described in subparagraph (A), an urban water Supplier shall… Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.

System water use 4-3 Section 4.2.5.3
x x 4.2 Section 4.2.5.6 10635(b) Demands under climate change considerations must be included as part of the drought risk assessment. System water use n/a Section 4.2.5.6 n/a x 5.1 Section 5.1 10608.36 Wholesale Suppliers shall include an assessment of present and proposed future measures, programs, and policies to help their Retail Suppliers achieve targeted water use reductions.

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

Chapter 5 Subsections 5.2.1, 5.2.2, and 5.2.3 address each of these situations.

Baselines and targets 5-1 Sections 5.2 and 5.3
x x 6.1 Section 6.1 10631(b)(2) When multiple sources of water supply are identified, describe the management of each supply in relationship to other identified supplies.

System supplies n/a Sections 6.1 and 6.2
x x 6.1 Sections 6.1 and 6.2 10631(b)(1)
Provide a discussion of anticipated supply availability under a normal, single dry year, and a drought lasting five years, as well as more frequent and severe periods of drought, including changes in supply due to climate change.

System supplies n/a Sections 6.1, 6.2, 7.1, and 7.2
x x 6.2 Section 6.2.2 10631(b)(4)(C)
Indicate whether groundwater is an existing or planned source of water available to the Supplier. If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.

Water supplies and recycled
water
6-1 Sections 6.2.2 and 6.4
x x 6.2 Section 6.2.2 10631(b)(4)(A)
Indicate whether a groundwater sustainability plan or groundwater management plan has been adopted by the Supplier or if there is any other specific authorization for groundwater management. Include a copy of the plan or authorization.

System supplies n/a Section 6.2.2
x x 6.2 Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. System supplies n/a Section 6.2.2 x x 6.2 Section 6.2.2 10631(b)(4)(B)
Indicate if the basin has been adjudicated and include a copy of the court order or decree and a description of the amount of water the Supplier has the legal right to pump.

System supplies n/a Section 6.2.2
x x 6.2 Section 6.2.2 10631(b)(4)(B)
For unadjudicated basins… (include) information as to whether DWR has identified the basin as a high- or medium-priority basin in the most current official departmental bulletin… Water supplies and recycled
water
n/a Section 6.2.2
x x 6.2 Section 6.2.2 10631(b)(4)(B)
For unadjudicated basins… describe efforts by the Supplier to coordinate with sustainability or groundwater agencies to achieve sustainable groundwater conditions.

Water supplies and recycled
water
n/a Section 6.2.2
x x 6.2 Section 6.2.2. 10631(b)(4)(C)
If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.

System supplies n/a Section 6.2.2
x x 6.2 Section 6.2.2 10631(b)(4)(D)
Provide a detailed description and analysis of the amount and location of groundwater that is projected to be pumped.

System supplies 6-9 Section 6.2.2
x x 6.1 Section 6.1 10631(b)
Identify and quantify the existing and planned sources of water available for 2025, 2030, 2035, 2040, 2045 and optionally 2050.

System supplies 6-8 and 6-9 Section 6.4
x x 6.2 Section 6.2.7 10631(c) Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis. System supplies n/a Section 6.2.7 x n/a 6.2 Section 6.2.5 10633(a)
Describe the wastewater collection and treatment systems in the Supplier’s service area with quantified amount of collection and treatment and the disposal methods.

System supplies (recycled
water)
6-2 Sections 6.2.5 and 6.4
x x 6.2 Section 6.2.5 10633(b)
Describe the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project.

System supplies (recycled
water)
6-3 Sections 6.2.5 and 6.4
x x 6.2 Section 6.2.5 10633(c) Describe the recycled water currently being used in the Supplier's service area.

System supplies (recycled
water)
6-4 Sections 6.2.5 and 6.4
x x 6.2 Section 6.2.5 10633(d)
Describe and quantify the potential uses of recycled water and provide a determination of the technical and economic feasibility of those uses.

System supplies (recycled
water)
6-4 Sections 6.2.5 and 6.4
x x 6.2 Section 6.2.5 10633(e)
Describe the projected use of recycled water within the Supplier's service area at the end of 5, 10, 15, and 20 years, and describe the actual use of recycled water in comparison to uses previously projected.

System supplies (recycled
water)
6-4 and 6-5 Sections 6.2.5 and 6.4
x x 6.2 Section 6.2.5 10633(f)
Describe the actions that may be taken to encourage the use of recycled water and the projected results of these actions in terms of acre-feet of recycled water used per year.

System supplies (recycled
water)
6-6 Sections 6.2.5 and 6.4
x x 6.2 Section 6.2.5 10633(g) Provide a plan for optimizing the use of recycled water in the Supplier's service area.

System supplies (recycled
water)
n/a Sections 6.2.5 and 6.4
x x 6.2 Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply. System supplies 6-7 Section 6.2.6 x x 6.2 Section 6.2.10 10631(f)
Describe the expected future water supply projects and programs that may be undertaken by the water Supplier to address water supply reliability in average, single-dry, and for a period of drought lasting five consecutive water years.

System supplies 6-7 Sections 6.2.10 and 6.4
x x 6.3 Section 6.3 and Appendix O 10631.2(a) The UWMP must include energy information, as stated in the code, that a Supplier can readily obtain.

System suppliers, energy
intensity
O-1A, O-1B, O-1C,
and O-2
Section 6.3
x 7.1 Section 7.1 10634
Provide information on the quality of existing sources of water available to the Supplier and the manner in which water quality affects water management strategies and supply reliability.

Water supply reliability
assessment
n/a Section 7.2
x x 7.2 Section 7.2 10635(a)
Service Reliability Assessment: Assess the water supply reliability during normal, dry, and a drought lasting five consecutive water years by comparing the total water supply sources available to the Supplier with the total projected water use over the next 20 years.

Water supply reliability
assessment
7-2, 7-3, and 7-4 Sections 7.3 and 7.4
x x 7.2 Section 7.2.3 10620(f)
Describe water management tools and options to maximize resources and minimize the need to import water from other regions.

Water supply reliability
assessment
n/a Section 7.2.3
x x 7.3 Section 7.3 10635(b)
Provide a drought risk assessment as part of information considered in developing the demand management measures and water supply projects.

Water supply reliability
assessment
n/a Section 7.3
x x 7.3 Section 7.3 10635(b)(1)
Include a description of the data, methodology, and basis for one or more supply shortage conditions that are necessary to conduct a drought risk assessment for a drought period that lasts five consecutive years.

Water supply reliability
assessment
n/a Section 7.3
x x 7.3 Section 7.3 10635(b)(2)
Include a determination of the reliability of each source of supply under a variety of water shortage conditions.

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

Water supply reliability
assessment
7-5 Section 7.3
x x 7.3 Section 7.3 10635(b)(4)
Include considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.

Water supply reliability
assessment
n/a Section 7.3
x x 8 Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below. Water shortage contingency planning
n/a Chapter 8
x x 8 Chapter 8 10632(a)(1) Provide an analysis of water supply reliability (from Guidebook Chapter 7) in the WSCP. Water shortage contingency planning
n/a Chapter 8
x x 8.2 Section 8.2 10632(a)(2)(A)
Provide the written decision-making process and other methods that the Supplier will use each year to determine its water reliability.

Water shortage contingency
planning
n/a Section 8.2
x x 8.2 Section 8.2 10632(a)(2)(B)
Provide data and methodology to evaluate the Supplier’s water reliability for the current year and one dry year pursuant to factors in the code.

Water shortage contingency
planning
n/a Section 8.2
x x 8.3 Section 8.3 10632(a)(3)(A)
Define six standard water shortage levels of 10%, 20%, 30%, 40%, 50% shortage, and greater than 50% shortage. These levels shall be based on supply conditions, including percent reductions in supply, changes in groundwater levels, changes in surface elevation, or other conditions. The shortage levels shall also apply to a catastrophic interruption of supply.

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

Water shortage contingency
planning
8-1 Sections 8.3 and 8.14
x x 8.4 Section 8.4 10632(a)(4)(A)
Suppliers with WSCPs that align with the defined shortage levels must specify locally appropriate supply augmentation actions.

Water shortage contingency
planning
8-2 Sections 8.4.1 and 8.14
x x 8.4 Section 8.4 10632(a)(4)(B) Specify locally appropriate demand reduction actions to adequately respond to shortages. Water shortage contingency planning
8-3 Sections 8.4.2 and 8.14
x x 8.4 Section 8.4 10632(a)(4)(C) Specify locally appropriate operational changes. Water shortage contingency planning
8-2 Section 8.4.3
x x 8.4 Section 8.4 10632(a)(4)(D)
Specify additional mandatory prohibitions against specific water use practices that are in addition to Statemandated prohibitions are appropriate to local conditions.Water shortage contingency planning
Table 8-3 Section 8.4.4
x x 8.4 Section 8.4 10632(a)(4)(E)
Estimate the extent to which the gap between supplies and demand will be reduced by implementation of the action.

Water shortage contingency
planning
8-2 and 8-3 Sections 8.4.7 and 8.14
x x 8.4 Section 8.4.6 10632.5 The UWMP shall include a seismic risk assessment and mitigation plan. Water shortage contingency plan
n/a Section 8.4.6
x x 8.5 Section 8.5 10632(a)(5)(A)
Suppliers must describe that they will inform customers, the public and others regarding any current or predicted water shortages.

Water shortage contingency
planning
n/a Section 8.5
x x 8.5 Section 8.5
10632(a)(5)(B),
10632(a)(5)(C)
Suppliers must describe that they will inform customers, the public and others regarding any shortage response actions triggered or anticipated to be triggered and other relevant communications.

Water shortage contingency
planning
n/a Section 8.5
x n/a 8.6 Section 8.6 10632(a)(6) Retail Supplier must describe how it will ensure compliance with and enforce provisions of the WSCP. Water shortage contingency planning
n/a Section 8.6
x x 8.7 Section 8.7 10632(a)(7)(A) Describe the legal authority that empowers the Supplier to enforce shortage response actions. Water shortage contingency planning
n/a Section 8.7
x x 8.7 Section 8.7 10632(a)(7)(B)
Provide a statement that the Supplier will declare a water shortage emergency per Water Code Chapter 3. Water Shortage Emergencies .

Water shortage contingency
planning
n/a Section 8.7
x x 8.7 Section 8.7 10632(a)(7)(C)
Provide a statement that the Supplier will coordinate with any city or county within which it provides water for the possible proclamation of a local emergency.

Water shortage contingency
planning
n/a Section 8.7
x x 8.8 Section 8.8 10632(a)(8)(A)
Describe the potential revenue reductions and expense increases associated with activated shortage response actions.

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

Water shortage contingency
planning
n/a Section 8.8
x n/a 8.8 Section 8.8 10632(a)(8)(C)
Retail Suppliers must describe the cost of compliance with Water Code Chapter 3.3, Excessive Residential Water Use During Drought.

Water shortage contingency
planning
n/a Section 8.8
x n/a 8.9 Section 8.9 10632(a)(9)
Retail Suppliers must describe the monitoring and reporting requirements and procedures that ensure appropriate data are collected, tracked, and analyzed for purposes of monitoring customer compliance.

Water shortage contingency
planning
n/a Section 8.9
x x 8.10 Section 8.10 10632(a)(10)
Describe reevaluation and improvement procedures for monitoring and evaluation the WSCP to ensure risk tolerance is adequate and appropriate water shortage mitigation strategies are implemented.

Water shortage contingency
planning
n/a Section 8.10
x n/a 8.11 Section 8.11 10632(b)
Analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas.

Water shortage contingency
planning
n/a Section 8.11
x x 8.12 Section 8.12 10632(c)
Make available the WSCP to customers and any city or county where it provides water within 30 days after adoption of the plan.

Water shortage contingency
planning
n/a Sections 8.12 and 10.6
x n/a 9.1 Sections 9.1 10631(e)(1)
Retail Suppliers shall provide a description of the nature and extent of each demand management measure implemented over the past five years. The description will address specific measures listed in code.

Demand management
measures
n/a Section 9.1.1
n/a x 9.2 Sections 9.2 10631(e)(2) Wholesale Suppliers shall describe specific demand management measures listed in code, their distribution system asset management program, and Supplier assistance program.

Demand management
measures
n/a n/a
x n/a 10 Chapter 10 10608.26(a)
Retail Suppliers shall conduct a public hearing to discuss adoption, implementation, and economic impact of water use targets (recommended to discuss compliance).

Plan adoption, submittal, and
implementation
n/a Sections 10.3 and 10.4
x x 10.2 Section 10.2.1 10621(b)
Notify, at least 60 days prior to the public hearing, any city or county within which the Supplier provides water that the Supplier will be reviewing the UWMP and considering amendments or changes to the plan.

Plan adoption, submittal, and
implementation
10-1 Section 10.2
x x 10.4 Section 10.4 10621(f) Each urban water Supplier shall update and submit its 2025 plan to DWR by July 1, 202 6.

Plan adoption, submittal, and
implementation
n/a Section 10.5
x x 10.2
Sections 10.2.2, 10.3, and

10.5 10642
Provide supporting documentation that the Supplier made the UWMP and WSCP available for public inspection, published notice of the public hearing, and held a public hearing about the UWMP and WSCP.

Plan adoption, submittal, and
implementation
n/a Sections 10.2, 10.3, and 10.4
x x 10.2 Section 10.2.2 10642
The Supplier is to provide the time and place of the hearing to any city or county within which the Supplier provides water.

Plan adoption, submittal, and
implementation
10-1 Section 10.3
x x 10.3 Section 10.3.2 10642 Provide supporting documentation that the UWMP and WSCP has been adopted as prepared or modified.

Plan adoption, submittal, and
implementation
n/a Sections 10.4 and 10.9
x x 10.4 Section 10.4 10644(a)
Provide supporting documentation that the Supplier has submitted their UWMP to the California State Library.

Plan adoption, submittal, and
implementation
n/a Section 10.5.3
x x 10.4 Section 10.4 10644(a)(1)
Provide supporting documentation that the Supplier has submitted their UWMP to any city or county within which the Supplier provides water no later than 30 days after adoption.

Plan adoption, submittal, and
implementation
n/a Section 10.5.4
x x 10.4 Sections 10.4.1 and 10.4.2 10644(a)(2) The UWMP, or amendments to the UWMP, submitted to DWR shall be submitted electronically.

Plan adoption, submittal, and
implementation
n/a Sections 10.5 and 10.9
x x 10.7 Section 10.7.2 10644(b) If revised, submit a copy of the WSCP to DWR within 30 days of adoption.

Plan adoption, submittal, and
implementation
n/a Section 10.9
x x 10.5 Section 10.5 10645(a)
Provide supporting documentation that, not later than 30 days after filing a copy of its UWMP with DWR, the Supplier has or will make the plan available for public review during normal business hours.

Plan adoption, submittal, and
implementation
n/a Section 10.6
x x 10.5 Section 10.5 10645(b)
Provide supporting documentation that, not later than 30 days after filing a copy of its WSCP with DWR, the Supplier has or will make the plan available for public review during normal business hours.

Plan adoption, submittal, and
implementation
n/a Section 10.6
x x 10.6 Section 10.6 10621(c)
If Supplier is regulated by the Public Utilities Commission, include its plan and contingency plan as part of its general rate case filings.

Plan adoption, submittal, and
implementation
n/a Section 10.7

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX C

DEMONSTRATION OF REDUCED IMPORTED WATER

RELIANCE

DEMONSTRATION OF CONSISTENCY WITH THE DELTA PLAN FOR

PARTICIPANTS IN COVERED ACTIONS
(2015 THROUGH 2050)

CITY OF SIERRA MADRE
Introduction
Pursuant to the California Department of Water Resources (DWR), an urban water supplier that anticipates participating in or receiving water from a proposed project (or “covered action”) such as a multi-year water transfer, conveyance facility, or new diversion that involves transferring water through, exporting water from, or using water in the Sacramento-San Joaquin Delta (Delta) should provide information in their 2015, 2020, and 2025 Urban Water Management Plans (UWMPs) for use in demonstrating consistency with Delta Plan Policy WR P1, “Reduce Reliance on the Delta Through Improved Regional Water Self-Reliance”. In addition, pursuant to California Code of Regulations, Title 23, § 5003:
(c)(1) Water suppliers that have done all of the following are contributing to reduced reliance on the Delta and improved regional self-reliance and are therefore consistent with this policy:
(A) Completed a current Urban or Agricultural Water Management Plan (Plan) which has been reviewed by the California Department of Water Resources for compliance with the applicable requirements of Water Code Division 6, Parts 2.55,

2.6, and 2.8;
(B) Identified, evaluated, and commenced implementation, consistent with the implementation schedule set forth in the Plan, of all programs and projects included in the Plan that are locally cost effective and technically feasible which reduce reliance on the Delta; and
(C) Included in the Plan, commencing in 2015, the expected outcome for measurable reduction in Delta reliance and improvement in regional self-reliance.

The expected outcome for measurable reduction in Delta reliance and improvement in regional self-reliance shall be reported in the Plan as the reduction in the amount of water used, or in the percentage of water used, from the Delta watershed. For the purposes of reporting, water efficiency is considered a new source of water supply, consistent with Water Code section 1011(a).

The City of Sierra Madre’s (City) main source of water supply has been groundwater produced from the Raymond Basin. The City can also purchase treated, imported water from San Gabriel Valley Municipal Water District through the Metropolitan Water District of Southern California (MWD). San Gabriel District coordinated with MWD to construct an emergency connection in 2012 for the City to received treated imported water which initially was delivered to the City’s distribution system. Due to recent multiple dry year conditions, the Raymond Basin Management Board implemented a “500-foot” level limitation for all Decreed Rights to the Santa Anita Subarea in 2013. As a result, the City’s adjusted right to the Santa Anita Subarea was reduced. In October 2015, after multiple years of insufficient groundwater replenishment, the Raymond Basin Management Board limited the amount of groundwater which the City is allowed to produce each year. The Raymond Management Board also authorized the use of imported water for spreading into the Raymond Basin on behalf of the City to allow additional groundwater production by the City in an amount equal to the imported water spread. MWD entered into an agreement with the City and San Gabriel Valley Municipal Water District to deliver treated, imported water for spreading within the Santa Anita Subarea of the Raymond Basin.

Pursuant to the agreement, San Gabriel District provides a portion of its annual SWP allocation which MWD then wheels to the City. A new imported water connection was constructed at the Sierra Madre Spreading Grounds for the purposes of spreading imported water.

The City is constructing a new well in the Main San Gabriel Basin (Main Basin) jointly with the City of Arcadia. Under the Main Basin Adjudication, the City does not have pumping rights but can pump from the Main Basin. Although there is no limit on the quantity of water that may be extracted by Parties to the Main Basin Adjudication, including the City, groundwater production in excess of a Party’s water right, or its proportional share (pumper’s share) of the Operating Safe Yield, requires purchase of untreated imported water to recharge the Main Basin. The City plans to obtain groundwater produced from the Main Basin, and delivered through an inter-connecting pipeline with the City of Arcadia. If the City obtains any water from the Main Basin, replacement water may be purchased from San Gabriel Valley Municipal Water District to recharge the Main Basin.

Any water pumped from Main Basin wells on behalf of the City will be counted toward the City.

The City has taken proactive measures to help reduce regional reliance on imported water supplies and is discussed in the following sections.

Reduced Reliance Calculation Tables
Pursuant to DWR guidance, Tables C-1 through C-4 were prepared to show the potential reduction of reliance on imported water supplies for the City. The City has used these tables to demonstrate its reduced regional reliance on imported water supplies, but not specifically Delta Watershed supplies. For each of the tables, a “Baseline year” (FY 2014- 15) was selected. (As discussed previously, the Raymond Basin Management Board implemented a “500-foot” level limitation for all Decreed Rights to the Santa Anita Subarea in the Raymond Basin in 2013. As a result, the City began using imported water supplies in 2013 on an emergency basis, but is projected to decrease its reliance.) Water demands during subsequent years (from 2015 through 2050 in five-year increments) were compared to water demands during the Baseline year. Table C-1 considers the population and service area water demands, and a demand in gallons per capita per day (GPCD) water use rate was calculated for each of the years following the Baseline year. The calculated reduction in GPCD from the Baseline year was then translated to an estimated amount of water saved as a result of water conservation measures. Table C-2 references the estimated amount of water saved from Table C-1 and shows the City’s water demand without water use efficiency in effect.

A method of showing reduced regional reliance on imported water supplies is to show increased regional self-reliance. Table C-3 lists water supply sources that contribute to regional self-reliance, including water use efficiency (from Table C-1 and C-2) and groundwater recharge activities. Regional self-reliance is expressed both in terms of acre feet (AF) and as a percentage.

The calculation of reduced regional reliance on imported water supplies is shown on Table C-4. Table C-4 also shows the percent change in imported water supplies relative to the City’s total supply. A negative percent change of imported water supplies indicates the City has reduced regional reliance on imported water supplies.

Since the Baseline year, the City has decreased its reliance on imported water supplies in 2015, 2020, and 2025 and anticipates doing so through 2050. As shown in Table C-4, the percentage of imported water supplies relative to the City’s total supply has decreased, and is projected to decrease, from the percentage in the Baseline year.

Recycled Water for Groundwater Replenishment
In addition to the historical actions the City has taken in conjunction with groundwater management agencies, the City may potentially benefit from a regional program to deliver recycled water to the San Gabriel Valley to replenish the Main San Gabriel Basin. The Metropolitan Water District of Southern California is developing its “Pure Water Southern California” (Pure Water) project. MWD is partnering with the Los Angeles County Sanitation Districts (LACSD) to investigate the viability of providing up to 150 million gallons per day (MGD) (approximately 168,000 AFY) of advanced treated wastewater from LACSD’s A.K. Warren Water Resource Facility (formerly Joint Water Pollution Control Plant) located in Carson, California (Carson Plant). The Pure Water project would deliver purified water from the Carson Plant through up to 60 miles of transmission pipelines to groundwater basins within MWD’s service area, including the Main Basin.

The purified water would be used in various locations within MWD’s service area for groundwater recharge, groundwater storage, and industrial facilities. In addition, purified water could potentially be treated further at two of MWD’s existing water treatment plants for direct potable reuse. The locations of the proposed pipeline alignments are provided in the figure below.

Regional Recycled Water Program Location
Source: https://www.mwdh2o.com/building-local-supplies/pure-water-southern-california/ MWD began construction of a $17 million small-scale demonstration plant (0.5 MGD) in late 2017 which was completed in October 2019. The results of the demonstration plant will allow MWD and others to determine whether expansion to a full-scale plant is beneficial. Once approved the full-scale plant, associated pipelines and ancillary facilities would take approximately 11 years to construct at an estimated cost of over $3 billion.

Pursuant to MWD’s “Regional Recycled Water Program Conceptual Planning Studies Report”, February 2019, the proposed Pure Water project would potentially provide 60,000 to 80,000 AFY to replenish the Main Basin. A portion of the replenished recycled water may be designated as Replacement Water (see Section 6.2.2 of the 2025 UWMP) and will offset all State Water Project water (on an AF for AF basis) which historically has been used to replenish the Main Basin groundwater supplies and is essential to sound basin management. Furthermore, some of the replenished recycled water may be used for general Basin benefit which will result in higher groundwater levels and potentially enable the Operating Safe Yield to be established at a higher amount than had no deliveries occurred. For the Main Basin, MWD has entered into a letter of intent with Upper District for at least 35,000 AFY and with Three Valleys District for at least 6,500 AFY, and will potentially provide up to 60,000 to 80,000 AFY, collectively.

For the purposes of this Plan and to illustrate the anticipated benefits the Pure Water project will have for reduced regional reliance on imported water supplies, it is assumed 20,000 AFY from the Pure Water project will be replenished in the Main Basin commencing in the year 2035 and up to 40,000 AFY will be replenished commencing in the year 2040 and thereafter. The recharged water hypothetically assigned to the City is based on projected groundwater use less the City’s share of the Main Basin's current Operating Safe Yield (150,000 AFY). The balance is production in excess of water rights and subject to replenishment; 50 percent of that amount is assumed to be delivered from the Pure Water project in 2035 and 100 percent in 2040 and thereafter. Because SWP water deliveries will be offset through the Pure Water project, Table C-3 includes 50 percent of the City’s Replacement Water requirement in 2035 (under Advanced Water Technologies) and all of the Replacement Water requirement in 2040 and thereafter.

The decrease in GPCD compared to the Baseline year has resulted in an overall decrease in reliance on water supplies from imported water supplies. As shown in Table C-4, the percentage of water supplies from imported water supplies relative to the City’s total supply has decreased, and is projected to decrease, from the percentage in the Baseline year.

Table C-1: Optional Calculation of Water Use Efficiency -To be completed if Water Supplier does not specifically estimate Water Use Efficiency as a supply Service Area Water Use Efficiency Demands
(Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands with Water Use Efficiency Accounted For 2,211 2,125 2,392 2,461 2,516 2,520 2,532 2,543 2,555 Non-Potable Water Demands
Potable Service Area Demands with Water Use Efficiency Accounted For 2,125 2,211 2,392 2,461 2,516 2,520 2,532 2,543 2,555 Total Service Area Population Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Population 11,133 11,000 10,731 10,878 10,900 10,922 10,972 11,022 11,073 Water Use Efficiency Since Baseline
(Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Per Capita Water Use (GPCD) 177 172 199 202 206 206 206 206 206 Change in Per Capita Water Use from Baseline (GPCD) 5 27 29 34 34 34 34 34 Estimated Water Use Efficiency Since Baseline (319) (60) (359) (410) (410) (413) (414) (416) Table C-2: Calculation of Service Area Water Demands Without Water Use Efficiency Total Service Area Water Demands
(Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands with Water Use Efficiency Accounted For 2,211 2,125 2,392 2,461 2,516 2,520 2,532 2,543 2,555 Reported Water Use Efficiency or Estimated Water Use Efficiency Since Baseline (319) (60) (359) (410) (410) (413) (414) (416) Service Area Water Demands without Water Use Efficiency Accounted For 2,125 2,151 2,073 2,101 2,106 2,110 2,119 2,129 2,139 Table C-3: Calculation of Supplies Contributing to Regional Self-Reliance Water Supplies Contributing to Regional Self-Reliance
(Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Water Use Efficiency (60) - (319) (359) (410) (410) (413) (414) (416) Water Recycling
Stormwater Capture and Use
Advanced Water Technologies (Pure Water - Main Basin)1 - - - - - 800 1,600 1,600 1,600 Conjunctive Use Projects
Local and Regional Water Supply and Storage Projects
Other Programs and Projects the Contribute to Regional Self-Reliance Water Supplies Contributing to Regional Self-Reliance - (60) (319) (359) (410) 390 1,187 1,186 1,184 Service Area Water Demands without Water Use Efficiency (Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands without Water Use Efficiency Accounted For 2,125 2,151 2,073 2,101 2,106 2,110 2,119 2,129 2,139 Change in Regional Self Reliance
(Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Water Supplies Contributing to Regional Self-Reliance - (60) (319) (359) (410) 390 1,187 1,186 1,184 Change in Water Supplies Contributing to Regional Self-Reliance (60) (319) (359) (410) 390 1,187 1,186 1,184 Percent Change in Regional Self Reliance
(As Percent of Demand w/out WUE)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Percent of Water Supplies Contributing to Regional Self-Reliance 0.0% -2.8% -15.4% -17.1% -19.5% 18.5% 56.0% 55.7% 55.4% Change in Percent of Water Supplies Contributing to Regional Self-Reliance -2.8% -15.4% -17.1% -19.5% 18.5% 56.0% 55.7% 55.4% Table C-4: Calculation of Reliance on Water Supplies from the Delta Watershed Water Supplies from the Delta Watershed
(Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
CVP/SWP Contract Supplies
Delta/Delta Tributary Diversions
Transfers and Exchanges
Other Water Supplies from the Delta Watershed2 2,045 2,047 1,724 1,612 1,600 800 - - - Total Water Supplies from the Delta Watershed 2,047 2,045 1,724 1,612 1,600 800 - - - Service Area Water Demands without Water Use Efficiency (Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands without Water Use Efficiency Accounted For 2,125 2,151 2,073 2,101 2,106 2,110 2,119 2,129 2,139 Change in Supplies from the Delta Watershed
(Acre-Feet)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Water Supplies from the Delta Watershed 2,047 2,045 1,724 1,612 1,600 800 - - - Change in Water Supplies from the Delta Watershed (2) (323) (435) (447) (1,247) (2,047) (2,047) (2,047) Percent Change in Supplies from the Delta Watershed
(As a Percent of Demand w/out WUE)
Baseline
(2014) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Percent of Water Supplies from the Delta Watershed 96.3% 95.1% 83.2% 76.7% 76.0% 37.9% 0.0% 0.0% 0.0% Change in Percent of Water Supplies from the Delta Watershed -1.3% -13.2% -19.6% -20.4% -58.4% -96.3% -96.3% -96.3% 1 2
The Pure Water Southern California Project is anticipated to meet all of the City's water replenishment obligations in the Main Basin. It is assumed that 50% of the recharged water will be available in 2035 before Pure Water is fully operational in 2040.

Represents treated imported water from MWD/San Gabriel Valley Municipal Water District for Raymond Basin through 2025. Represents untreated imported water from MWD for Main Basin beginning 2030.

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX D

NOTIFICATION LETTERS AND NOTICES OF PUBLIC

HEARING

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX E

CLIMATE CHANGE CONSIDERATIONS (CAL- ADAPT
DATA)

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX F

RAYMOND BASIN ADJUDICATION

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX G

LONG BEACH JUDGMENT

CITY OF SIERRA MADRE
2025 URBAN WATER MANAGEMENT PLAN

APPENDIX H

MAIN BASIN JUDGMENT
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11 12

NOSSAMAN LLP
FREDERIC A. FUDACZ, State Bar No. 050546
ALFRED E. SMITH, State Bar No. 186257
777 S. Figueroa Street, 34th Floor
Los Angeles, CA 90017
Telephone: (213) 612-7800
Facsimile: (213) 612-7801
[email protected]
[email protected]
Attorneys for Main San Gabriel Basin Watermaster

SUPERIOR COURT OF THE STATE OF CALIFORNIA

FOR THE COUNTY OF LOS ANGELES
13 Upper San Gabriel Valley
14 Municipal Water District,
)
)
~
Case No.: 924128

AMENDED JUDGMENT
(And Exhibits Thereto)
( Plaintiff,
16 vs.
1 7 City of Alhambra, et al,
18 Defendants
l
~
~ 19
20 21
22 23
24 25
26 27
~~~~~~~~~~~~

HONORABLE MAUREEN DUFFY-LEWIS
Assigned Judge Presiding
DEPARTMENT 38
June 21, 2012
(This version includes prior Amendments
and updated Exhibits through June 21, 2012.)
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AMENDED JUDGMENT

TABLE OF CONTENTS
And
Amended Judgment Sections
Identified With Prior Judgment Section Numbers
Page
INTRODUCTION ........................................................................................................ l

1. Pleadings, Parties and Jurisdiction ..................................................................... 1

2. Stipulation for Entry of Judgment.. .................................................................... 2

3. Lis Pendens (New) ............................................................................................. 2

4. Findings and Conclusions (Prior 3) ................................................................... 2

5. Judgment (New) ................................................................................................. 2

6. Intervention After Judgment (New) ................... :······ ........................................ .2 · 7. Amendments to Judgment (New) ...................................................................... 2

8. Transfers (New) ................................................................................................. 3

9. Producers and Their Designees (New) .............................................................. 3

10. Defmitions (Prior 4) ................................................................................... : ....... 3 (a) Base Annual Diversion Right. .................................................................... 3 (b) Direct Use ................................................................................................... 3 ( c) Divert or Diverting ..................................................................................... 3 ( d) Diverter ....................................................................................................... 3 ( e) Elevation ..................................................................................................... 3 (f) Fiscal Year .................................................................................................. 3 (g) Ground Water ............................................................................................. 3 (h) Ground Wat~r Basin ................................................................................... 3 (i) Integrated Producer .................................................................................... 3 G) In-Lieu Water Cost ..................................................................................... 4 (k) Key Well. .................................................................................................... 4 (1) Long Beach Case ........................................................................................ 4 (m) Main San Gabriel Basin or Basin ............................................................... 4 1 1
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2 (n) Make-Up Obligation .................................................................................. 4 ( o) Minimal Producer ....................................................................................... 4 3 (p) Natural Safe Yield ...................................................................................... 4 4 ( q) Operating Safe Yield .................................................................................. 4 5 (r) Overdraft ..................................................................................................... 4 6 (s) Overlying Rights (Prior (r) (1)) .................................. : .............................. .4 7 (t) Physical Solution (Prior (s)) ....................................................................... 5 8 (u) Prescriptive Pumping Right (Prior (t)) ....................................................... 5 9 (v) Produce or Producing (Prior (u)) ................................................................ 5 10 (w) Producer (Prior (v)) .................................................................................... 5 11 (x) Production (Prior (w)) ................................................................................ 5 12 (y) Pump or Pumping (Prior (x)) ..................................................................... 5 13 (z) Pumper (Prior (y)) ...................................................................................... 5 14 (aa) Pumper's Share (Prior (z)) ......................................................................... 5 (
\ .5 (bb) Relevant Watershed (Prior (aa)) ................................................................. 5 16 (cc) Replacement Water (Prior (bb)) ................................................................. 5 17 (dd) Responsible Agency (Prior (cc)) ................................................................ 5 18 (1) Upper District ........ ~ .............................................................................. 6 19 (2) San Gabriel District .............................................................................. 6 20 (3) Three Valleys District. .......................................................................... 6 21 ( ee) Stored Water (Prior ( dd)) ........................................................................... 6 22 (ft) Supplemental Water (Prior (ee)) ................................................................ 6 23 (gg) Transporting Parties (Prior (ft)) ................................................................. 6 24 (hh) Water Level (Prior (gg)) ............................................................................. 7 25 (ii) Year (Prior (hh)) ......................................................................................... 7 26 Gj) Reclaimed Water ....................................................................................... 7 27 11. Exhibits (Prior 5) ............................................................................................... 7 ( .,8 II. DECREE .................................................................................................................... 8 \ 11 1 A. DECLARATION OF HYDROLOGIC CONDITIONS ........................................... 8 2 12. Basin as Common Source of Supply (Prior 6) ................................................... 8 3 13. Determination ofNatural Safe Yield (Prior 7) .................................................. 8 4 14. Existence of Overdraft (Prior 8) ........................................................................ 8 5 B. DECLARATION OF RIGHTS . ................................................................................. 8 6 15. Prescription (Prior 9) .......................................................................................... 8 . 7 (a) Prior Prescription ........................................................................................ 8 8 (b) Mutual Prescription .................................................................................... 8 9 (c) Common Ownership of Safe Yield and Incidents Thereto ........................ 9 10 16. Surface Rights (Prior 10) ................................................................................... 9 11 17. Ground Water Rights (Prior 11) ........................................................................ 9 12 18. Optional Integrated Production Rights (Prior 12) .............................................. 9 13 19. Special Category Rights (Prior 13) .................................................................. 10 14 20. Non-consumptive Practices (Prior 14) ............................................................ .! 0 ( 5 \ 21. Overlying Rights (Prior 14.5) .......................................................................... 10 16 C. INJlJNCTION ............................................................................................................ 11 17 22. Injunction Against Unauthorized Production (Prior 15) ................................. .11 18 23. Injunction re Non-consumptive Uses (Prior 16) .............................................. 11 19 24. Injunction re Change in Overlying Use Without Notice Thereof to 20 Watermaster (Prior 16.5) .................. .-.............................................................. 11 21 25. Injunction Against Unauthorized Recharge (Prior 1 7) .................................... 12 22 26. Injunction Against _Transportation From Basin or Relevant 23 Watershed (Prior 18) ........................................................................................ 12 24 D. CONTINUING JURISDICTION ............................................................................. 13 25 27. Jurisdiction Reserved (Prior 19) ..................................................................... .13 26 E. WATERMASTER ..................................................................................................... 13 27 28. Watermaster to Administer Judgment (Prior 20) ............................................. 13 ,....~ 29. Qualification, Nomination and Appointment (Prior 21) .................................. 13 111
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(a) Qualification ............................................................................................. 14 (b) Nomination of Producer Representatives ................................................. 14 ( c) Nomination of Public Representatives ..................................................... 14 ( d) Appointment ........ _ ...................................................................................... 14

30. Term and Vacancies (Prior 22) ........................................................................ 14

31. Quorum (Prior 23) ............................................................................................ 15

32. Compensation (Prior 24) .................................................................................. 15 3 3. Organization (Prior 25) .................................................................................... 15 (a) Minutes ..................................................................................................... 15 (b) Regular Meetings ........................................ : ............................................ 15 ( c) Special Meetings ......................................................................... ; ............. 16 (d) Adjournments ........................................................................................... 16

34. Powers and Duties (Prior 26) ........................................................................... 16 (a) Rules and Regulations .............................................................................. 16 (b) Acquisition of Facilities ........................................................................... 16 ( c) Employment of Experts and Agents ......................................................... 16 ( d) Measuring Devices, etc ............................................................................ 17 ( e) Assessments .............................................................................................. 17 ( f) Investment of Funds ................................................................................. 17 (g) Borrowing ................................................................................................. 17 (h) Purchase of and Recharge with Supplemental Water .............................. 17 (i) Contracts ................................................................................................... 18 G) Cooperation with Existing Agencies ........................................................ 18 (k) Assumption of Make-Up Obligation ........................................................ 18 (m) Water Quality ............................... ; ........................................................... 18 (n) Cyclic Storage Agreements ..................................................................... 18 (o) NoticeList ................................................................................................ 19 (p) Authority to Sue (New) ............................................................................ 19 IV
1 (q) Public Policy Education (New) ................................................................ 19 2 (r) Export Agreements (New) ........................................................................ 19 3 35. Policy Decisions -Procedure (Prior 27) .......................................................... 19 4 36. Reports (Prior 28) ............................................................................................ 20 5 37. Review Procedures (Prior 29) .......................................................................... 20 6 (a) Effective Date ofWatermaster Action ..................................................... 20 7 (b) Notice of Motion ...................................................................................... 20 8 ( c) Time for Motion ....................................................................................... 20 9 (d) De Novo Nature of Proceeding ................................................................ 20 10 (e) Decision .................................................................................................... 21 11 F. PHYSICAL SOLUTION ........................................................................................... 21 12 38. Purpose and Objective (Prior 30) ..................................................................... 21 13 3 9. Need for Flexibility (Prior 31) ......................................................................... 21 14 40. Watermaster Control (Prior 32) ....................................................................... 21 ~5 41. General Pattern of Contemplated Operation (Prior 33) ................................... 23 16 42. Basin Operating Criteria (Prior 34) .................................................................. 24 17 43. Determination of Operating Safe Yield (Prior 35) .......................................... 24 18 (a) Preliminary Determination ....................................................................... 24 19 (b) Notice and Hearing ................................................................................... 24 20 ( c) Watermaster Determination and Review Thereof .................................... 24 21 44. Reports of Pumping and Diversion (Prior 36) ................................................. 25 22 45. Assessments - Purpose (Prior 37) .................................................................... 25 23 (a) Statement of Authority and Need for Flexibility ...................................... 25 24 (b) Authorized Assessments ........................................................................... 26 25 46. Assessments -Procedure (Prior 38) ...................... ; ......................................... 28 26 (a) Levy and Notice of Assessment.. ............................................................. 28 27 (b) Payment .................................................................................................... 28 ( ~ ( c) Delinquency .............................................................................................. 29 v
1 47. Availability of Supplemental Water from Responsible Agencies (Prior 39) .. 29 2 48. Accumulation of Replacement Water Assessment Proceeds (Prior 40) .......... 29 3 49. Carry-over of Unused Rights (Prior 41) .......................................................... 30 4 50. Minimal Producers (Prior 42) .......................................................................... 30 5 51. Effective Date (Prior 43) ................................................................................. 30 6 G. MISCELLANEOUS PROVISIONS ........................................................................ 30 7 52. Puente Narrows Flow (Prior 44) ...................................................................... 30 8 53. Section Deleted .................................................................................................. .. 9 54. Service Upon and Delivery to Parties of Various Papers (Prior 46) ............... 31 10 55. Assignment, Transfer, etc., of Rights (Prior 47) .............................................. 32 11 56. Abandonment of Rights (Prior 48) .................................................................. 32 12 57. Intervention After Judgment (Prior 49) ........................................................... 33 13 58. Judgment Binding on Successors, etc, (Prior 50) ............................................ 33 14 59. Water Rights Permits (Prior 51) ...................................................................... 33 ( 5 60. Costs (Prior 52) ................................................................................................ 33 16 61. Entry of Judgment (New) ................................................................................ 33 17 18
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EXIIlBITS
"A" Map entitled, "San Gabriel River Watershed Tributary to Whittier Narrows" "B" - Boundaries of Relevant Watershed
"C" - Table Showing Base Annual Diversion Rights of Certain Diverters "D" - Table Showing Prescriptive Pumping Rights and Pumper's Share of Each Pumper
"E" - Table Showing Production Rights of Each Integrated Producer "F" - Table Showing Special Category Rights
"G" - Table Showing Non-consumptive Users
"H" - W atermaster Operating Criteria
"J" - Puente Narrows Agreement
"K" - Overlying Rights
(Exhibit "K" Includes - Nature of Overlying Right, Description of Overlying Lands To Which Overlying Rights Are Appurtenant, Producers Entitled To Exercise Overlying Rights and Their Respective Consumptive Use Portions, and Map of Overlying Lands.)
"L" - List of Producers and Other Parties and Their Designees (June 2012) (New) "M" - Watermaster Members, Officers, and Staff, Including Calendar Year 2012 (New)
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SUPERIOR COURT OF CALIFORNIA, COUNTY OF LOS ANGELES
11 Upper San Gabriel Valley
12 Municipal Water District,
Case No.: 924128

AMENDED JUDGMENT
13 Plaintiff,
14 vs.
5 City of Alhambra, et al,
16 Defendant l Hearing: June 21, 2012
Department 38, 9:30 A.M.
17 18
19 20
21 22
23 24
25 26
27 )
~~~~~~~~~~~~~~~~)
The Petition of the MAIN SAN GABRIEL BASIN WATERMASTER for this AMENDED JUDGMENT herein, came on regularly for hearing in this Court before the HONORABLE MAUREEN DUFFY-LEWIS, ASSIGNED JUDGE PRESIDING, on June 21, 2012; Frederic A. Fudacz appeared as attorney for Watermaster - Petitioner; and good cause appearing, the following ORDER and AMENDED JUDGMENT are, hereby, made:

I. INTRODUCTION

1. Pleadings, Parties, and Jurisdiction. The complaint herein was filed on January 2, 1968, seeking an adjudication of water rights. By amendment of said complaint and dismissals of certain parties, said adjudication was limited to the Main San Gabriel Basin and its Relevant Watershed. Substantially all defendants and the cross-defendant have appeared herein, certain defaults have been entered, and other defendants dismissed. By the pleadings herein and by

Page 1 ends

Sierra Madre City CouncilJuly 14, 2026

Sierra Madre City Council
July 14, 2026