Agenda packet — Pittsburg City Council, June 15, 2026 (part 1 of 6)

CITY OF PITTSBURG

AMENDED AGENDA
JUNE 15, 2026

CITY HALL COUNCIL CHAMBER
65 CIVIC AVENUE, PITTSBURG, CA

CLOSED SESSION
6:00 PM

REGULAR MEETING
7:00 PM

CITY COUNCIL

HOUSING AUTHORITY

PITTSBURG ARTS AND COMMUNITY FOUNDATION

PITTSBURG POWER COMPANY

SOUTHWEST PITTSBURG GEOLOGIC HAZARD ABATEMENT DISTRICT II

SUCCESSOR AGENCY

PRESIDING
Mayor/Chair • Dionne Adams
Vice-Mayor/Chair • Angelica Lopez
Council Member/Board Member • Juan Antonio Banales
Council Member/Board Member • Arlene Kobata
Council Member/Board Member • Jelani Killings

FOR HOUSING AUTHORITY
Housing Authority Member • S.L. Floyd
Housing Authority Member • Annie Hill Herring
Pittsburg City Council regular meetings are held the first and third Mondays of each month at 7:00 p.m. The Housing Authority meets in conjunction with the City Council on the third Monday of each month. The Pittsburg City Council meets regularly in the Council Chamber at 65 Civic Avenue, unless otherwise noted above. The City Council also sits as the Board of Directors of several other City agencies. The stipends for all agency members conform to state statutes governing compensation amounts. All other Agencies meet on an as needed basis and will be listed above if applicable. Copies of the open session agenda packets, which are distributed to the City Council, are on file in the office of the City Clerk, 65 Civic Avenue, Pittsburg, California, and are available for public inspection, beginning 72 hours in advance, during normal business hours (8:00 a.m. – 5:00 p.m., Monday through Friday, except from noon to 1:00 p.m. and City holidays). The agenda and reports are also located on the City’s website at www.pittsburgca.gov. Additionally, if any reports or documents, which are public records, are distributed to the City Council less than 72 hours before the meeting, those reports and documents will also be available for public inspection in the City Clerk’s Office and on the day of the meeting in the Council Chamber at the public counter area below the dais.

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6:00 PM - CONVENE IN CLOSED SESSION

1. CONFERENCE WITH LABOR NEGOTIATORS Pursuant to Section 54957.6:

City designated representatives: Darin Gale, Jennifer Brizel, Jordan Davis Employee organizations: American Federation of State, County, and Municipal Employees Local 512 Management/Professional/Confidential Unit and Miscellaneous A Unit; Pittsburg Police Managers Group; and Teamsters Local 856
Unrepresented employees: Management Group; Senior Executive Team 7:00 PM - CONVENE IN OPEN SESSION FOR REGULAR MEETING

CALL TO ORDER

ROLL CALL

PLEDGE OF ALLEGIANCE

PRESENTATIONS

2. 2026 Pittsburg Promise Community Scholarship Awards

HOUSING AUTHORITY

HOUSING AUTHORITY CONSIDERATION

3. Adoption of a Housing Authority Resolution Approving the Fiscal Year 2026- 27 Budget
The Housing Authority of the City of Pittsburg (Housing Authority) has prepared its operating budget for Fiscal Year (FY) 2026-27 and is presenting it to its governing board for review and approval.

HOUSING AUTHORITY CONSENT CALENDAR

4. Minutes of March 16, 2026

5. Adoption of a Housing Successor Agency Resolution Approving a Budget Amendment for the Fiscal Year 2025-2026
The FY 2025-2026 Community Development Block Grant (CDBG) Annual Action Plan (AAP) includes Council-approved funding allocations of $17,662 each to Bay Area Crisis Nursery and Centro Legal de La Raza, funded through Housing Successor Agency (HSA) funds.

A budget amendment is required to process payments to these subrecipients. Staff is requesting City Council approval to amend the Housing Successor Agency FY 2025-26 budget by $35,324 from available fund balance.

HOUSING AUTHORITY MEMBER REMARKS

ADJOURNMENT OF THE HOUSING AUTHORITY

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CITY COUNCIL

PROCLAMATIONS
The standing proclamation(s) were published as part of the agenda. The proclamation(s) will be posted on the City's website and social media accounts as appropriate.

6. Th!nk Pittsburg - Concord Iron Works

7. Juneteenth

8. Immigrant Heritage Month

COMMITTEE REPORTS
Council Members may make a report on their committee assignments at this time. (see attached list of adhoc committees and other public agencies in which Council members participate). (No Action Required)

PUBLIC COMMENTS
Members of the audience who wish to address the City Council or Agency Boards on issues that are not scheduled for the agenda and on any items listed as part of the Consent Calendar should complete a Speaker's Card available at the dais.

Please read the card carefully in order to fill out the card properly. Submit the completed card to the City Clerk before the item is called, preferably before the meeting begins. Individuals will be given three minutes to address the Council unless additional time is allowed as provided for spokespersons. Prior to speaking, each member of the public shall state their name and business and City of residence in a clear and audible tone of voice. (No Action Required)

PUBLIC HEARING

9. Adoption of City Council Resolutions Approving the 2025 Urban Water Management Plan and Water Shortage Contingency Plan
The Urban Water Management Planning Act requires every urban water supplier providing water to more than 3,000 customers or supplying more than 3,000 acre-feet of water annually to prepare and adopt an Urban Water Management Plan (UWMP) every five years. In addition, state law requires a Water Shortage Contingency Plan (WSCP) to be incorporated into the UWMP and adopted by a separate resolution. The 2025 Water Shortage Contingency Plan has been included as part of the 2025 UWMP and is attached to this report for the City Council's review and consideration.

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COMBINED CITY COUNCIL, PITTSBURG ARTS AND COMMUNITY

FOUNDATION, PITTSBURG POWER COMPANY, SOUTHWEST PITTSBURG

GHAD II AND SUCCESSOR AGENCY CONSIDERATION

10. Adoption of a City Council Resolution Approving the Five-Year Capital Improvement Program for Fiscal Years 2026/27 Through 2030/31 and Allocating Funding for Fiscal Year 2026/27
The City of Pittsburg’s Five-Year Capital Improvement Program (CIP) is a multi-year planning instrument for all capital improvement projects and their funding sources, including the construction of new facilities and infrastructure.

The Five-Year CIP is developed by City staff and adopted by the City Council as a guide for prioritizing projects that support community goals.

11. Adoption of City Council, Pittsburg Arts and Community Foundation, Pittsburg Power Company, SW Pittsburg Geologic Hazard Abatement District II and Successor Agency for the Redevelopment Agency of the City of Pittsburg Resolutions Approving the Fiscal Year 2026-27 Budgets
The City has prepared the Fiscal Year (FY) 2026/27 Operating and Capital Budget and is presenting it to the City Council for review and approval.

12. Adoption of a Successor Agency to the Redevelopment Agency of the City of Pittsburg Resolution Approving the Preliminary Official Statement for the 2026 Subordinate Tax Allocation Refunding Bonds to Be Issued by the Successor Agency to the Redevelopment Agency of the City of Pittsburg Based on current market rates, a refinancing of the outstanding bonds is anticipated to generate over $2,175,000 of present value savings, or $10,850,000 in gross cash flow savings. The savings will be shared among the taxing entities, including the City’s General Fund. The refunding will also shorten the final maturity of the Successor Agency’s bonds from 2036 to 2030. Successor Agency Board approved the refunding and documents at its April 20, 2026, meeting, and the Countywide Oversight Board approved the refunding and legal documents at its April 23, 2026, meeting. California Department of Finance has also approved that the refunding meets the legal requirements.

The purpose of this item is to obtain Successor Agency Board approval regarding the Preliminary Official Statement, which will serve as the primary marketing and disclosure document for selling the Refunding Bonds to investors.

CONFLICT OF INTEREST STATEMENT
City Council/Agency Members may make any conflict of interest declarations pertaining to Consent Calendar items at this time.

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COMBINED CITY COUNCIL, PITTSBURG ARTS AND COMMUNITY

FOUNDATION, PITTSBURG POWER COMPANY, SOUTHWEST PITTSBURG

GHAD II AND SUCCESSOR AGENCY CONSENT CALENDAR

13. Minutes of June 1, 2026

14. Consideration of a Recess of the July 6, 2026 City Council Meeting Historically, the City Council has recessed one regular meeting during the summer months. This practice provides Councilmembers the opportunity to schedule vacations around the July 4th holiday period.

15. Adoption of City Council Resolution Accepting the Plans and Specifications, Waiving the Bid Irregularity, and Awarding Project 3024—Buchanan Road Slope Repair
Project 3024 - Buchanan Road Slope Repair (Project) is for the repairs to the slope on the south side of Buchanan Road, between Heights Avenue and Quercus Lane, damaged by the 2022/23 winter storm season. The repairs consist of the re-establishment of the slope through excavation of the damaged area and reconstructing the embankment using engineering fill. Adoption of this resolution will accept the Project plans and specifications, waive the bid irregularity, and award a construction contract to Kerex Engineering, Inc.

16. Adoption of City Council Resolution Authorizing Execution of the Second Amendment to the Consulting Services Agreement with William K. Faisst, Consulting Engineer, Inc. for Project 5067-Water Treatment Plant Filter Improvements and Hypoclorite Conversion Project
Staff proposes a Second Amendment to the Consulting Services Agreement (Agreement) with William K. Faisst, Consulting Engineers, Inc. (WKFCE) to increase compensation for Project 5067 – Water Treatment Plant Filtration Improvements and Hypochlorite Conversion (Project). Successful project management requires exceptional knowledge of the treatment plant and extensive experience in the design and implementation of water treatment plant improvements. WKFCE possesses and exceeds these qualifications, providing the technical expertise and continuity necessary to support the Project’s successful completion

17. Adoption of a City Council Resolution Requesting the Consolidation of the Municipal Election with Other Elections to be Held on Tuesday, November 3, 2026 General Election Date for the Election of Certain Officers as Required by the Provisions of the Laws of the State of California Relating to General Law Cities and Levying a Charge and Establishing Word Limitation for Candidates’ Statements
Pursuant to Elections Code Section 10400, et. seq., the City must, at least 88 days prior to the date of the election, file with the Board of Supervisors a Resolution of its governing board requesting the consolidation of elections and

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setting forth the exact form of any office to be voted upon at the election and establishing the word limitation for candidates’ statements.

18. Adoption of a City Council Resolution Establishing the Appropriations Limit for the 2026-27 Fiscal Year in Accordance with Proposition 111 and Article XIII (B)
In November 1979, the voters of California approved Proposition 4, commonly known as the Gann Initiative. This proposition created Article XIII (B) of the State Constitution placing limits on the amount of revenue which can be appropriated by all government entities in any fiscal year. The legislation mandates all governing bodies including the City of Pittsburg to annually establish the Appropriations Limit.

19. Adoption of a City Council Resolution Authorizing the City Manager to Execute an Agreement for Janitorial Services with Imperial Maintenance Services
The existing agreement for janitorial services expires on June 30, 2026. If approved, this Resolution will authorize execution of a general services agreement for janitorial services with Imperial Maintenances Services, Inc.

20. Adoption of a City Council Resolution Authorizing Execution of a First Amendment to the Consulting Service Agreement with Raney Planning and Management, Inc. for Project 3038, West Leland Road Extension Phase II The City has an existing Consulting Services Agreement (Agreement) with Raney Planning & Management, Inc. (Raney) to provide CEQA analysis and permitting services for Project 3038 – West Leland Road Extension Phase II (Project). Additional technical studies and associated reporting are required to support the evaluation and inclusion of a borrow site for fill materials adjacent to the project site. Adoption of this resolution will authorize the City Manager to execute a First Amendment to the Consulting Services Agreement with Raney, increasing compensation by $45,263, for a revised total not-to-exceed $419,476.

21. Adoption of a City Council Resolution Establishing a Transient Occupancy Tax Rate of 12%
Pursuant to Pittsburg Municipal Code section 3.12.030, the City Council is authorized to establish a transient occupancy tax rate of up to 12%. The proposed increase to 12 percent aligns Pittsburg with regional market conditions and provides a modest enhancement to General Fund revenues, primarily generated from visitors rather than residents, to support City services and ongoing economic development efforts.

22. Adoption of a Pittsburg Power Company Resolution Authorizing the Executive Director to Execute the First Amendment to the Agreement for the Alteration/Installation of Utility Facilities between Pittsburg Power Company and ALCO Iron and Metals to Accept a Revised Letter of Credit

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Pittsburg Power Company (PPC) Resolution 22-444 authorized the execution of an Agreement between PPC and ALCO Iron and Metals (ALCO) for the Alteration/Installation of Utility Facilities at ALCO, an industrial customer on Mare Island. Under the Agreement, PPC loaned $350,000 to ALCO. The Agreement obligated ALCO to provide PPC with an irrevocable letter of credit (LOC) to secure the loan amount. ALCO has transitioned its banking services from Bank of America to BMO Bank and has requested issuance of a new LOC with a reduced amount, reflecting a remaining principal balance of $265,000.

COUNCIL REQUEST FOR FUTURE AGENDA ITEMS
Council Members may request items to be considered for future agendas. An item will only be brought forward with a majority vote and will appear on a future agenda with staff recommendations for further Council consideration.

COUNCIL MEMBER REMARKS
Council Members may make brief announcements or informal comments at this time. (No Action Required)

CITY MANAGER REPORTS/REMARKS
The City Manager may make brief announcements or informal comments at this time and brief the Council on items of interest. (No Action Required) ADJOURNMENT TO JULY 20, 2026

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NOTICE TO PUBLIC

GENERAL INFORMATION
Copies of the open session agenda packets, as distributed to the City Council, are on file in the office of the City Clerk, 65 Civic Avenue, Pittsburg, California, and are available for public inspection, beginning 72 hours in advance, during normal business hours (8:00 a.m. – 5:00 p.m., Monday through Friday, except City holidays). Full agenda packets are also located on the City’s website at www.pittsburgca.gov. If any reports or documents, which are public records, are distributed to the City Council less than 72 hours before the meeting, those reports or documents will be available for public inspection in the City Clerk’s Office and on the day of the meeting in the Council Chamber at the public counter area below the dais.

SPEAKER’S CARD
Members of the audience who wish to address the City Council on issues that are not scheduled for the agenda and on any items listed as part of the agenda should complete a Speaker’s Card available at the dais. Please read the card carefully in order to fill out the card properly. Submit the completed card to the City Clerk before the item is called, preferably before the meeting begins. Individuals will be given up to three minutes to address the Council unless additional time is allowed as provided for spokespersons. Speakers are not permitted to yield their time to another speaker. Prior to speaking, each member of the public shall state their name and business and City of residence in a clear and audible tone of voice. Pursuant to the Brown Act, no action may be taken by the City Council on items not already scheduled on the agenda; however, the City Council may refer your comments/concerns to staff or request that the item be placed on a future agenda.

PUBLIC HEARINGS
Persons who wish to speak on Public Hearings listed on the agenda will be heard when the Public Hearing is opened, except on Public Hearing items previously heard and closed to public comment. After the public has commented, the item is closed to public comment and brought to the Council/Agency level for discussion and action.

Further comment from the audience will not be received unless requested by the Council/Agency.

There is a 90-day limit for the filing of a challenge in the Superior Court to certain City administrative decisions and orders which require a hearing by law, the receipt of evidence, and the exercise of discretion. The 90-day limit begins on the date the decision is final (Code of Civil Procedure Section 1094.6). Further, if you challenge an action taken by the City Council in court, you may be limited, by California law, including but not limited to Government Code Section 65009, to raising only those issues you or someone else raised in the public hearing, or in written correspondence delivered to the City Council prior to or at the public hearing. The City Council may be requested to reconsider a decision if the request is made prior to the next City Council meeting, regardless of whether it is a regular or special meeting.

NOTICE TO THE DISABLED AND VISUALLY OR HEARING IMPAIRED In compliance with the Americans with Disabilities Act, the City of Pittsburg will provide special assistance for disabled residents. Upon request, an agenda for any meeting shall be made available in appropriate alternative formats. The Council Chamber is equipped with sound amplifier units for use by the hearing impaired. The units operate in conjunction with the Chamber’s sound system. You may request the sound amplifier from the City Clerk for personal use during Council meetings. If you need special assistance to participate in this meeting, or are requesting a specially formatted agenda, please contact the City Clerk at (925) 252-4850. Notification 48 hours prior to the meeting will enable the City to make reasonable arrangements to ensure accessibility to this meeting or provide the requested agenda format. (28 CFR 35.102-35.104 ADA Title II)

DISRUPTIVE CONDUCT
The Council requests that you observe the order and decorum of our Council Chamber by turning off or setting to vibrate all cellular telephones and electronic devices, and that you refrain from making personal, impertinent, or slanderous remarks. Boisterous and disruptive behavior while the Council is in session, and the display of signs in a manner which violates the rights of others or prevents others from watching or fully participating in the Council meeting, is a violation of our Municipal Code and any person who engages in such conduct can be ordered to leave the Council Chamber by the Mayor.

LIVE MEDIA BROADCASTING ADVISEMENT
City Council meetings are webcast live on the City’s website at www.pittsburgca.gov on the Agendas and Live Meetings page. Past meetings and approved minutes are also archived on that webpage. Watch the live meeting via the City’s webcast (www.pittsburgca.gov - Agendas and Live Meetings), on Comcast Channel 24 Delta TV, AT&T UVerse Channel 99 Delta TV. Contact the City Clerk’s office at (925) 252-4850 for more information

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City Council Agency/Liaison/Subcommittee Assignments as of March 26, 2026

OUTSIDE AGENCY BOARDS COUNCIL MEMBER(S) TYPE MEETS TIME STAFF ABAG Dionne Adams / Jelani Killings (Alt.) Standing Annual D. Gale/M. Aliotti Delta Diablo* Jelani Killings / Arlene Kobata (Alt.) Standing 2nd Wednesday 4:30 PM J. Samuelson East Co. Co. County Habitat Conservancy Arlene Kobata / Juan Banales (Alt.) Standing 4th Monday (Bi-Monthly) 1:30 PM J. Davis East County Water Management Juan Banales / Jelani Killings (Alt.) Standing Bi-Annual 1:00 PM J. Samuelson MCE Clean Energy Board Arlene Kobata / Angelica Lopez (Alt.) Standing 3rd Thursday 6:30 PM J. Davis TRANSPLAN / ECCRFFA Juan Banales / Dionne Adams (Alt.) Standing 2nd Thursday 6:30 PM J. Samuelson Tri-Delta Transit (2 reps)** Angelica Lopez & Dionne Adams / Arlene Kobata (Alt.) Standing 4th Wednesday 4:00 PM J. Samuelson

LIASISON COUNCIL MEMBER(S) TYPE MEETS TIME STAFF
East Bay League of California Cities Dionne Adams / Angelica Lopez (Alt.) Standing 3rd Thursday D. Gale/M. Aliotti Green Empowerment Zone Arlene Kobata / Jelani Killings (Alt.) Standing 3rd Friday (Bi-Monthly) 9:30 AM J. Davis Los Medanos Health Advisory Committee Arlene Kobata & Dionne Adams Ad Hoc As needed D. Gale/M. Aliotti Mayor’s Conference Dionne Adams / Angelica Lopez (Alt.) Standing 1st Thursday 6:30 PM D. Gale/M. Aliotti School Districts Committee (2x2) Jelani Killings & Angelica Lopez / Juan Banales (Alt.) Standing Quarterly D. Gale/M.Aliotti

SUBCOMMITTEES COUNCIL MEMBER(S) TYPE MEETS TIME STAFF
Community and Economic Development Jelani Killings & Dionne Adams / Angelica Lopez (Alt.) Standing 2nd Thursday 5:30 PM J. Davis Data Center and Hydrogen Jelani Killings & Juan Banales Ad Hoc As needed J. Davis Development Agreement Dionne Adams & Jelani Killings Ad Hoc As needed J. Davis Finance Management Dionne Adams & Juan Banales / Jelani Killings (Alt.) Standing 2nd Wednesday 5:30 PM E. Adair Infrastructure and Transportation Juan Banales & Arlene Kobata / Dionne Adams (Alt.) Standing 4th Thursday 5:30 PM J. Samuelson Tenant Protections Juan Banales & Angelica Lopez Ad Hoc As needed S. Bellafronte Life Enrichment Dionne Adams & Arlene Kobata / Jelani Killings (Alt.) Standing 3rd Wednesday 5:30 PM K. Simonton Pittsburg Arts and Community Foundation Angelica Lopez & Jelani Killings Standing As needed K. Simonton Public Safety Juan Banales & Angelica Lopez / Arlene Kobata (Alt.) Standing 1st Wednesday 5:30 PM P. Galer *Stipend of $170 per month
** Stipend of 100 per month

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STAFF REPORT
MEETING DATE: June 15, 2026
TO: Chair and Governing Board Members
FROM: Darin E. Gale‚ Executive Director
Elena Adair, Director of Finance
SUBJECT: Adoption of a Housing Authority Resolution Approving the Fiscal Year 2026-27 Budget

EXECUTIVE SUMMARY
The Housing Authority of the City of Pittsburg (Housing Authority) has prepared its operating budget for Fiscal Year (FY) 2026-27 and is presenting it to its governing board for review and approval.

FISCAL IMPACT
The Housing Authority’s budget for FY 2026-27 for Housing Choice Vouchers program estimates revenue to be $27.0 million and appropriations to the $27.0 million and for Housing Successor Agency Fund estimated revenue to be $0.2 million and appropriations to be $0.5 million. The projected June 30, 2027 fund balances for Housing Choice Vouchers and Housing Successor Agency Fund are $1.1 million and $5.7 million, respectively.

RECOMMENDATION
The Governing Board of the Housing Authority approve the Housing Authority’s FY 2026-27 Operating Budget.

BACKGROUND
Housing Authority staff began preparing the operating budget for FY 2026-27 in March 2026. Progress on the preparation of the preliminary budget, which included the Housing Authority budget, was presented to the City Council at the budget workshop conducted on May 4, 2026.

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SUBCOMMITTEE FINDINGS
The Housing Authority’s preliminary budget was presented as part of the citywide preliminary budget to the Finance Management Subcommittee on May 21, 2026.

STAFF ANALYSIS
The Housing Authority anticipates an increase of $2.7 million in HUD Housing Choice Vouchers (HCV) grant revenue. As a result, staff increased the HCV program spending accordingly. Staff projects to collect $180,000 in rental income that is a local unrestricted source and generally used towards Authority’s programs administration.

Housing Successor revenues primarily come from investment earnings. Small amount ($28,500) is expected to be received from rental income. The recommended appropriations of $0.5 million are primarily for service organizations such as CORE, PCSI, Bay Area Crisis Nursery and Centro legal de la Raza.

The Housing Authority’s detailed budget is presented in Attachment A. In addition, Housing Authority’s budget is included in the overall City’s FY 2026-27 annual budget, which must be approved by July 1, 2026, to provide spending authority for the upcoming fiscal year.

ATTACHMENTS: Resolution
Housing Choice Vouchers and Housing Successor Agency Budgets

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Resolution No. Page 1 of 2 June 15, 2026

BEFORE THE GOVERNING BOARD OF THE HOUSING AUTHORITY

OF THE CITY OF PITTSBURG
In the Matter of:

Approving the Fiscal ) RESOLUTION NO.

Year 2026/27 Budget )
WHEREAS, Housing Authority staff began preparing the operating budget for Fiscal Year (FY) 2026/27 in March 2026; and
WHEREAS, the preliminary budget was presented to the City Council and the public at the budget workshops conducted May 4, 2026; and
WHEREAS, the Housing Authority’s preliminary budget was presented to the Finance Management Subcommittee on May 21, 2026; and
WHEREAS, the Housing Authority’s budget for FY 2026/27 estimates revenues to be $27,321,759 and expenditures to be $27,606,766. The Housing Successor Fund fund balance will be used to satisfy its annual budget deficit, leaving an estimated fund balance of $5,757,903 on June 30, 2027; and.

WHEREAS, the Housing Authority budget is prepared with the intent of providing a planned program for services and a financial system to carry out the planned program of services.

NOW, THEREFORE, BE IT RESOLVED, that the Governing Board of the Housing Authority approves the Housing Authority’s budget for FY 2026/27 by appropriating $27,606,766 for on-going financing for the Housing Authority’s activities during FY 2026/27.

BE IT FURTHER RESOLVED, that the Governing Board of the Housing Authority hereby authorizes the use of its fund balance to satisfy the annual budget deficit.

BE IT FURTHER RESOLVED, that the Governing Board of the Housing Authority authorizes the Director of Finance or his/her designee to approve payments for goods and services received by the Housing Authority in accordance with the Housing Authority’s approved budget, programs, and policies.

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Resolution No. Page 2 of 2 June 15, 2026
PASSED AND ADOPTED by the Housing Authority of the City of Pittsburg at a regular meeting on the 15th day of June 2026, by the following vote:

AYES:

NOES:

ABSTAINED:

ABSENT:

Dionne Adams, Chair
ATTEST:
__
Alice E. Evenson, Agency Secretary

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Housing Choice Vouchers
Budget Summary - Fund 241
Fund Description / Budget Highlights
Fund Activity
FY 22/23 FY 23/24 FY 24/25 FY 25/26 FY 26/27
Actual Actual Actual Projected Proposed
Beginning Available Fund Balance $ 764,698 $ 1,162,861 $ 1,088,102 Revenues
HUD Grants $ 21,471,099 $ 22,843,310 24,572,983 22,578,350 25,303,620 Investment Income/(Loss) 24 35 62 21 -
Other Revenue 1,714,168 2,023,205 1,824,120 1,794,008 1,795,139 23,185,291 24,866,550 26,397,165 24,372,379 27,098,759
Transfers In 55,000 55,000 - - -
23,240,291 24,921,550 26,397,165 24,372,379 27,098,759
Expenditures
Salary & Benefits 1,020,642 955,878 910,536 1,091,144 1,255,718 Professional & Consulting Services 114,456 126,021 143,274 120,000 94,342 Materials, Supplies & Services 21,879,844 23,001,434 24,717,098 23,008,675 25,506,283 Capital Outlay 12 - 1,464 - 1,000
Cost Allocation 170,640 210,284 201,723 202,412 224,539 Debt Service 18,794 4,701 - - -
23,204,388 24,298,318 25,974,095 24,422,231 27,081,882
Transfers Out 24,907 24,907 24,907 24,907 -
23,229,295 24,323,225 25,999,002 24,447,138 27,081,882
Changes in restricted reserves
Net Annual Activity $ 10,996 598,325 398,163 (74,759) 16,877 Fund Balance
Ending Available Fund Balance 764,698 $ 1,162,861 $ 1,088,102 $ 1,104,979 Reserves -
Total $ 764,698
The Federal Housing and Urban Development Department (HUD) provides housing vouchers to eligible low income families, the elderly, veterans, and the disabled allowing them to afford decent, safe, and sanitary housing.

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Housing Successor Agency
Budget Summary - Fund 248
Fund Description / Budget Highlights
Fund Activity
FY 22/23 FY 23/24 FY 24/25 FY 25/26 FY 26/27
Actual Actual Actual Projected Proposed
Beginning Available Fund Balance $ 5,522,513 $ 6,296,252 $ 6,059,787 Revenues
Rental Income $ 124,166 $ 125,736 77,118 28,500 28,500
Investment Income/(Loss) 110,064 252,019 225,988 222,000 187,000 Other Revenue & Subsidies 129,572 765,310 974,979 7,500 7,500 363,802 1,143,065 1,278,085 258,000 223,000
Transfers In - - - - -
363,802 1,143,065 1,278,085 258,000 223,000
Expenditures
Salary & Benefits 36,070 110,766 86,764 88,785 86,024
Professional & Consulting Services 152,975 359,394 375,323 349,000 381,000 Materials, Supplies & Services 42,111 667,609 36,056 52,000 52,000 Capital Outlay - - - - -
Cost Allocation 3,639 4,084 5,454 3,931 5,860
Debt Service - - - - -
234,795 1,141,853 503,597 493,716 524,884
Transfers Out 55,749 55,749 749 749 -
290,544 1,197,602 504,346 494,465 524,884
Changes in restricted reserves
Net Annual Activity $ 73,258 (54,537) 773,739 (236,465) (301,884) Fund Balance
Ending Available Fund Balance 5,522,513 $ 6,296,252 $ 6,059,787 $ 5,757,903 Reserves - Loans Receivables 27,725,944
Reserves - Interfund Advances 1,233,134
Total $ 34,481,591
This fund accounts for development, rehabilitation and preservation of affordable housing. This fund is used to account for housing assets of the former City Redevelopment Agency upon acceptance of the Housing Successor role by the City.

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Housing Authority Minutes Page 1 of 2 March 16, 2026

CITY OF PITTSBURG

HOUSING AUTHORITY MEETING MINUTES
DATE: March 16, 2026
LOCATION: Council Chamber, City Hall, 65 Civic Avenue, Pittsburg, CA 94565

CITY COUNCIL/AGENCY MEMBERS
Dionne Adams, Mayor/Chair
Angelica Lopez, Vice-Mayor/Chair
Juan Antonio Banales, Council/Agency Member
Arlene Kobata, Council/Agency Member
Jelani Killings, Council/Agency Member
S.L. Floyd, Agency Member
Annie Hill Herring, Agency Member

APPOINTED OFFICIALS
Darin E. Gale, City Manager/Executive Director
Donna Mooney, City Attorney/Legal Counsel
Alice E. Evenson, City Clerk/Agency Secretary (elected) Nancy Parent, City Treasurer (elected)
Chair Adams called the meeting of the Housing Authority to order at 7:00 P.M. in the Council Chamber at City Hall, 65 Civic Avenue Pittsburg, CA.

ROLL CALL
All Members were present.

PUBLIC HEARING

3. Adoption of a Housing Authority Resolution Approving the Public Housing Agency Annual Plan for 2026 and Authorizing the Executive Director to Submit the Public Housing Agency Annual Plan for 2026 to the U.S. Department of Housing and Urban Development Chair Adams opened the public hearing. There being no one to speak on the item, Chair Adams closed the public hearing.

Member Floyd thanked Housing Authority staff for all their hard work.

Member Herring suggested the timeline for Housing vouchers should be reduced. She thought five (5) years was too long.

On Motion by Member Floyd, seconded by Member Herring to approve the Public Housing Agency Annual Plan for 2026 and Authorize the Executive Director to Submit the Public Housing Agency Annual Plan for 2026 to the U.S. Department of Housing and Urban Development and adopted unanimously.

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Housing Authority Minutes Page 2 of 2 March 16, 2026

CONSENT CALENDAR
On Motion by Member Floyd, seconded by Member Herring and adopted unanimously.

4. Minutes of January 20, 2026

5. Adoption of a Housing Authority Minute Order Approving an Annual Housing Asset Report

6. Adoption of a Housing Authority Resolution Authorizing the Listing for Sale of Real Property 2105 Abbott Avenue

HOUSING AUTHORITY MEMBER REMARKS
There were no member remarks.

ADJOURNMENT
The Housing Authority adjourned at 7:43 P.M.

Respectfully submitted,
Alice E. Evenson, Secretary

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STAFF REPORT
MEETING DATE: June 15, 2026
TO: Mayor and Council Members
FROM: Darin E. Gale‚ City Manager
John Funderburg, Assistant Director of Community and
Economic Development
Ishani Rasanayagam, Administrative Analyst II
SUBJECT: Adoption of a Housing Successory Agency Resolution Approving a Budget Amendment for the Fiscal Year 2025-
2026

EXECUTIVE SUMMARY
The FY 2025-2026 Community Development Block Grant (CDBG) Annual Action Plan (AAP) includes Council-approved funding allocations of $17,662 each to Bay Area Crisis Nursery and Centro Legal de La Raza, funded through Housing Successor Agency (HSA) funds.

FISCAL IMPACT
Approval of this item will authorize a budget adjustment in the amount of $35,324 from the Housing Successor Agency (HSA) fund balance. The HSA fund currently has an estimated available balance of approximately $4.7 million, which is sufficient to support this allocation. There is no fiscal impact to the General Fund or other City funds.

RECOMMENDATION
Adopt a Resolution approving a budget amendment of $35,324 from the Housing Successor Agency (HSA) fund balance to support FY 2025-2026 Council-approved subrecipient funding.

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BACKGROUND
As part of the FY 2025-2026 Annual Action Plan (AAP), the City Council approved funding allocations for Bay Area Crisis Nursery and Centro Legal de La Raza in the amount of $17,662 each using Housing Successor Agency (HSA) funds.

Following Life Enrichment Subcommittee recommendations, these allocations were assigned to be paid using HSA funding after it was determined that the proposed activities did not fully qualify under the Community Development Block Grant (CDBG) Housing category.

A budget amendment is required to process payments per the subrecipient agreements.

SUBCOMMITTEE FINDINGS
This item was not discussed in a Subcommittee.

STAFF ANALYSIS
The FY 2025-2026 AAP includes Council-approved allocations of $17,662 each for Bay Area Crisis Nursery and Centro Legal de La Raza, funded through the Housing Successor Agency (HSA). The original HSA budget did not include funding for the above subrecipients. Staff is therefore requesting Council approval to amend HSA budget by $35,324 from fund balance to allow staff to complete processing of the previously approved subrecipient agreements.

ATTACHMENTS: Resolution

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BEFORE THE GOVERNING BOARD OF THE HOUSING AUTHORITY

OF THE CITY OF PITTSBURG
In the Matter of:

Approving a Budget Amendment )
Of Housing Successor Agency )
Funds for FY 2025-2026 ) RESOLUTION NO.

WHEREAS, the FY 2025-2026 Annual Action Plan includes Council-approved funding allocations of $17,662 each to Bay Area Crisis Nursery and Centro Legal de La Raza, funded through Housing Successor Agency (HSA) funds; and WHEREAS, these allocations were assigned to HSA funding after it was determined that the proposed activities did not fully qualify under the Community Development Block Grant (CDBG) Housing category; and
WHEREAS, sufficient funding exists within the Housing Successor Agency fund balance to support the approved allocations; and
WHEREAS, a budget amendment is required to process the previously approved payments for subrecipient agreements.

NOW, THEREFORE, BE IT RESOLVED that the Governing Board of the Housing Authority of the City of Pittsburg hereby amends the fiscal year 2025-26 Housing Successor Agency budget in the amount of $35,324 from the Housing Successor Agency (HSA) fund balance.

PASSED AND ADOPTED by the Governing Board of the Housing Authority of the City of Pittsburg at a regular meeting on the 15th day of June 2026 by the following votes:

AYES:

NOES:

ABSTAINED:

ABSENT:
____________________________
Dionne Adams, Chair
ATTEST:
______________________________
Alice E. Evenson, Agency Secretary

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JUNETEENTH
JUNE 2026
WHEREAS, Juneteenth is the oldest known celebration commemorating the ending of slavery in the United States. Dating back to 1865, it was on June 19th that the Union soldiers, led by Major General Gordon Granger, landed at Galveston, Texas with news that the war had ended and that the enslaved were now free; and WHEREAS, today, Juneteenth celebrates African American freedom and achievement, while encouraging continuous self-development and respect for all cultures. As it takes on a more national, symbolic and even global perspective, the events of 1865 in Texas are not forgotten; and
WHEREAS, a national day of pride is growing, Juneteenth is being recognized within communities and organizations throughout the country - all with the mission to promote and cultivate knowledge and appreciation of African American history and culture; and
WHEREAS, respect and appreciation for all of our differences grow out of exposure and working together. Getting involved and supporting Juneteenth celebrations creates new bonds of friendship and understanding among us. This indeed, brightens our future - and that is the spirit of Juneteenth.

NOW, THEREFORE, I, Dionne Adams, on behalf of the City Council of the City of Pittsburg, do hereby proclaim June 19, 2026 as “Juneteenth Day” in the City of Pittsburg.
____________________________________________________________________________________________________________________________________________________ Alice E. Evenson, City Clerk
____________________________________________________________________________________________________________________________________________________ Dionne Adams, Mayor

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IMMIGRANT HERITAGE MONTH
JUNE 2026
WHEREAS, Immigrant Heritage Month is observed every June to celebrate the contributions of immigrants to American society; and
WHEREAS, Immigrant Heritage Month in 2026 will be observed throughout June, continuing the annual tradition established in 2014 to honor the cultural, economic, and social impact of immigrants in the United States; and WHEREAS, the observance highlights the stories of both contemporary immigrants and the generations that came before them, emphasizing their role in shaping American communities, innovation, and culture; and WHEREAS, California is home to more immigrants than any other state in the country, and that immigrant and refugee communities are critical assets to the state’s economy, culture and society.

NOW, THEREFORE, I, Dionne Adams, on behalf of the City Council of the City of Pittsburg, do hereby proclaim June 2026 as Immigrant Heritage Month in the City of Pittsburg and encourage all residents to celebrate our diverse heritage and culture. ____________________________________________________________________________________________________________________________________________________ Alice E. Evenson, City Clerk
____________________________________________________________________________________________________________________________________________________ Dionne Adams, Mayor

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STAFF REPORT
MEETING DATE: June 15, 2026
TO: Mayor and Council Members
FROM: Darin E. Gale‚ City Manager
John Samuelson, Director of Public Works/City Engineer
Gina Haynes, Assistant Director of Public Works-Engineering SUBJECT: Adoption of City Council Resolutions Approving the 2025 Urban Water Management Plan and Water Shortage
Contingency Plan

EXECUTIVE SUMMARY
The Urban Water Management Planning Act requires every urban water supplier providing water to more than 3,000 customers or supplying more than 3,000 acre-feet of water annually to prepare and adopt an Urban Water Management Plan (UWMP) every five years. In addition, state law requires a Water Shortage Contingency Plan (WSCP) to be incorporated into the UWMP and adopted by a separate resolution. The 2025 Water Shortage Contingency Plan has been included as part of the 2025 UWMP and is attached to this report for the City Council's review and consideration.

FISCAL IMPACT
There is no direct fiscal impact from this action. However, urban water suppliers that do not prepare, adopt, and submit its UWMP to the California Department of Water Resources are ineligible for funds or drought assistance from the state.

RECOMMENDATION
City Council resume the public hearing for additional public comment, close the public hearing, and adopt the resolutions approving the 2025 Urban Water Management Plan and the Water Shortage Contingency Plan.

Page 23 of 937 ends

BACKGROUND
The City of Pittsburg has prepared a 2025 UWMP to satisfy the requirements of the California Water Code sections 10610 et seq. and Urban Water Management Planning Act of 1983 (UWMPA). Urban water suppliers with 3,000 or more service connections or supplying 3,000 or more acre-feet of water per year are required to prepare an UWMP every five years. The 2025 UWMP includes a WSCP that specifies demand management measures and provisions for recycled water use. The purpose of the UWMP is to review and enhance the reliability of the water supply, ensure that future beneficial uses are supported by adequate water supply availability, promote policies and programs that encourage water conservation, and provide a framework for responding to water supply shortages and drought conditions. The 2025 UWMP focuses on the following water-planning fundamentals:

Preparing a roadmap for addressing current and long-term future water use.

Evaluating potable and non-potable water supplies, assessing water deliveries, and identifying constraints on water availability under certain regulatory and hydrological conditions.

Evaluating water supply reliability by integrating the water-use analysis with the water supply analysis to summarize the water service reliability assessment under normal conditions, single dry-year conditions, and five consecutive dry years through year 2050.

Preparing a realistic Drought Risk Assessment (DRA) by including integrated water supplies and projected water use in a hypothetical consecutive five-year drought condition.

Developing an effective Water Shortage Contingency Plan (WSCP) that specifies opportunities to reduce demand and augment supplies under various, and even unpredictable, water shortage conditions.

Comparison of the City’s future demands and available supplies indicates that the City will have sufficient water supply to meet its demands, even during single and multiple dry-year events, and by implementing the drought response actions documented in the WSCP.

The draft 2025 UWMP is available for public review and comment through the end of the public hearing. A copy of the draft 2025 UWMP was made available for viewing at the City Clerk’s office (65 Civic Avenue) and available for download on the City's website.

The attached document represents the public review draft of the City’s 2025 UWMP. It is organized based on guidance provided by the Department of Water Resources.

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On June 1, 2026, City Council opened the public hearing and kept the hearing open for continued comments through June 15, 2026. On May 15, 2026, the Notice of Public hearing was published in a newspaper of general circulation. At tonight’s meeting the City Council will continue to take public comment, close the hearing and consider adoption of the UWMP.

SUBCOMMITTEE FINDINGS
This item was not presented to a Subcommittee.

STAFF ANALYSIS
The City’s 2025 UWMP is an update to the 2020 Plan adopted by City Council on September 20, 2021. The 2025 Plan documents the City’s planning activities to ensure adequate water supplies to meet existing and future demands for water. For the City, the benefits of updating the Plan include water-service planning that allows the City to evaluate supply reliability goals and water use efficiency, identify opportunities and challenges to maximize the beneficial use of water, and provide an additional public forum for discussion of water resources issues.

The 2025 UWMP presents forecasted water supplies and demand and describes the City’s water demand management and recycled water opportunities. Population numbers are generalized and estimated based on a projected City growth rate of 1%.

This yields a projected population of 97,944 in 2050. This updated UWMP incorporates recommendations from the City’s principal water supplier, the Contra Costa Water District (CCWD), as detailed in its Future Water Supply Study, and CCWD’s 2025 UWMP. Staff coordinated with CCWD and Delta Diablo in preparing this 2025 UWMP.

Delta Diablo provided data on wastewater treatment and current and projected water recycling. CCWD, as the City’s raw water wholesaler, provided information on water supply reliability and drought risk.

Additional requirements to be provided in the 2025 UWMP include a WSCP that specifies demand management measures and provisions for recycled water use. In addition, state law requires a WSCP to be incorporated into the UWMP and adopted by a separate resolution. Chapter 9 of the attached 2025 UWMP discusses the City’s plan to achieve water use reductions to meet its Water Use Target. The City has already taken various steps to help ensure that urban water use continues to meet the 2025 target. These efforts include water waste prevention ordinances, metering, conservation pricing, public education and outreach, programs to assess and manage distribution system real loss, and other demand management programs.

Public Participation
The City encouraged public participation in development and review of this UWMP. The City posted a notice on its website on May 7, 2026, alerting customers that it was preparing the UWMP update and providing a City contact for more information. A Notice

Page 25 of 937 ends

of Public Hearing to receive comments on the draft UWMP was published in the East Bay Times ECC edition. The East Bay Times is a major local newspaper of general circulation in the City’s service area. The notice advised the public that copies of the draft 2025 UWMP were available for review at the City Clerk’s office prior to the hearing, and that written comments could be sent to the City until June 15, 2026.

County Notification
Contra Costa County was notified by mail that the City’s 2025 UWMP was under preparation on December 17th, 2025. A notice of intention to adopt letter was sent to the County, with a link to the City’s website.

ATTACHMENTS: UWMP Resolution
WSCP Resolution
2025 UWMP

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BEFORE THE CITY COUNCIL OF THE CITY OF PITTSBURG
In the Matter Of:

Approving the 2025 Urban )
Water Management Plan ) RESOLUTION NO.

WHEREAS, the City of Pittsburg operates and maintains a potable water system for Pittsburg water customers; and
WHEREAS, as a municipal water service provider to more than 3,000 customers, the City is required by the Water Code of the State of California (Water Code section 10610 et seq., known as the Urban Water Management Planning Act) to develop a Urban Water Management Plan every five (5) years; and
WHEREAS, the City of Pittsburg has prepared and circulated for public review the 2025 Urban Water Management Plan (the “Plan”) and properly noticed the public regarding adoption of the Plan.

NOW, THEREFORE, BE IT RESOLVED, that the City Council of the City of Pittsburg hereby finds that the Plan for the City of Pittsburg was prepared following applicable standards developed by the California Department of Water Resources and represents the City’s effort to meet applicable standards under the Water Planning Act.

BE IT FURTHER RESOLVED, that the Plan is approved, and the Public Works Director/City Engineer is authorized and directed to submit the Plan to the California Department of Water Resources, the California State Library and Contra Costa County within 30 days of adoption.

PASSED AND ADOPTED by the City Council of the City of Pittsburg at a regular meeting on the 15th day of June 2026, by the following vote:

AYES:

NOES:

ABSTAINED:

ABSENT:

Dionne Adams, Mayor
ATTEST:

Alice E. Evenson, City Clerk

Page 27 of 937 ends

BEFORE THE CITY COUNCIL OF THE CITY OF PITTSBURG
In the Matter Of:

Approving the 2025 Water )
Shortage Contingency Plan ) RESOLUTION NO.

WHEREAS, the City of Pittsburg operates and maintains a potable water system for Pittsburg water customers; and
WHEREAS, as a municipal water service provider to more than 3,000 customers, the City is required by state law, at California Water Code section 10610 et seq., known as the Urban Water Management Planning Act, to develop a Water Shortage Contingency Plan every five (5) years; and
WHEREAS, the City of Pittsburg has prepared and circulated for public review the 2025 Water Shortage Contingency Plan (the “Plan”) and properly noticed the public regarding adoption of the Plan.

BE IT FURTHER RESOLVED, that the City Council hereby approves the Plan, and the Public Works Director/City Engineer is authorized and directed to submit the Plan to the California Department of Water Resources, the California State Library and Contra Costa County within 30 days of adoption.

PASSED AND ADOPTED by the City Council of the City of Pittsburg at a regular meeting on the 15th day of June 2026, by the following vote:

AYES:

NOES:

ABSTAINED:

ABSENT:

Dionne Adams, Mayor
ATTEST:

Alice E. Evenson, City Clerk

Page 28 of 937 ends

2025UrbanWater
ManagementPlan
CityofPittsburg

Page 29 of 937 ends

2025

URBAN WATER

MANAGEMENT
PLAN
DRAFT
May 20th, 2026

CITY OF PITTSBURG

Page 30 of 937 ends

7 433 N O R T H F I R S T S T R E E T , S U I T E 1 0 3 • F R E S N O , C A L I F O R N I A 9 3 7 2 0 • ( 5 5 9 ) 4 3 6 - 0 6 0 0 • F A X ( 5 5 9 ) 4 3 6 - 062 2 www.akeleng.com
Smart Planning Our Water Resources
May 20th, 2026
City of Pittsburg
357 E 12th Street
Pittsburg California, 94565
Attention: Jason Moser, Water Treatment Plant Superintendent Subject: 2025 Urban Water Management Plan - Draft
Dear Jason:

We are pleased to submit the City of Pittsburg 2025 Urban Water Management Plan (2025 UWMP), compliant with the Urban Water Management Planning Act (UWMPA) of 1983 and subsequent amendments.

The plan updates existing and future water needs through the next 25 years, includes a Water Shortage Contingency Plan (WSCP), a Drought Risk Assessment (DRA), and must be submitted to the California Department of Water Resources every five years.

We extend our thanks to you, John Samuelson, Public Works Director; Gina Haynes, Associate director of Public Works-Engineering and other City staff whose courtesy and cooperation were valuable in reviewing and completing this study.

Sincerely,
AKEL ENGINEERING GROUP, INC.

Tony Akel, P.E.

Principal
Enclosure: 2025 Urban Water Management Plan

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City of Pittsburg
2025 Urban Water Management Plan
Contact Sheet
Date this plan was submitted to the Department of Water Resources:

Name of Person(s) preparing this plan:

Jason Moser, Water Treatment Plant Superintendent
City of Pittsburg
Phone: (925) 225-6997
Email: [email protected]
Tony Akel, P.E., Project Manager
Akel Engineering Group, Inc.

Phone: (559) 436-0600
Fax (559) 436-0622
Email: [email protected]
The Water supplier is a Municipality
The Water supplier is a Retailer
Utility Services provided by the water supplier include: Water, Sewer Is this Agency a Bureau of Reclamation Contractor? No
Is this Agency a State Water Project Contractor? No

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Acknowledgements
City Council
Dionne Adams, Mayor
Angelica Lopez, Vice Mayor
Arlene Kobata
Juan Antonio Banales
Jelani Killings
Management Personnel
John Samuelson, Public Works Director/City Engineer
Gina Haynes, Associate Director of Public Works-Engineering Jason Moser, Water Treatment Plant Superintendent
Pedro Ramos, Public Works Superintendent
Jorge Esparza, Former Public Works Superintendent
Eric Heiden, Revenue Operations Supervisor

Page 33 of 937 ends

May 2026 i City of Pittsburg
2025 Urban Water Management Plan
City of Pittsburg
2025 Urban Water Management Plan
Table of Contents Page No.

1.0 CHAPTER 1 – INTRODUCTION AND OVERVIEW ............................................................... 1-1

1.1 PURPOSE..................................................................................................................... 1-2

1.2 BACKGROUND ............................................................................................................ 1-2

1.3 UWMP IMPORTANCE.................................................................................................. 1-3

1.4 NOTABLE UPDATES SINCE 2020 UWMP.................................................................. 1-4

1.5 UWMP IN RELATION TO OTHER EFFORTS.............................................................. 1-5

1.6 UWMPS AND GRANT OR LOAN ELIGIBILITY............................................................ 1-6

1.7 SUBMITTAL TABLES ................................................................................................... 1-7

1.8 REPORT ORGANIZATION........................................................................................... 1-7

2.0 CHAPTER 2 – PLAN PREPARATION ................................................................................... 2-1

2.1 BASIS FOR PREPARING THIS PLAN ......................................................................... 2-1

2.2 INDIVIDUAL OR REGIONAL PLAN.............................................................................. 2-2

2.3 SUPPLIER IDENTIFICATION....................................................................................... 2-2

2.4 COORDINATION AND OUTREACH ............................................................................ 2-3

2.5 SUBMITTAL TABLES SUMMARY................................................................................ 2-4

3.0 CHAPTER 3 – SERVICE AREA DESCRIPTION.................................................................... 3-1

3.1 GENERAL DESCRIPTION ........................................................................................... 3-1

3.1.1 Location ........................................................................................................... 3-1

3.1.2 Land Use.......................................................................................................... 3-1

3.1.3 Socioeconomic Conditions............................................................................... 3-2

3.2 SERVICE AREA BOUNDARY MAPS........................................................................... 3-2

3.3 SERVICE AREA CLIMATE........................................................................................... 3-2

3.3.1 Historic Climate Data ....................................................................................... 3-7

3.3.2 Climate Change ............................................................................................... 3-8

3.3.2.1 Water Supply.................................................................................. 3-9

3.3.2.2 Groundwater .................................................................................. 3-9

3.3.2.3 Flooding... ...................................................................................... 3-9

3.3.2.4 Water Quality ................................................................................. 3-9

3.4 SERVICE AREA POPULATION AND DEMOGRAPHICS ............................................ 3-10

3.4.1 Service Area Population .................................................................................. 3-10

3.5 SUBMITTAL TABLES SUMMARY................................................................................ 3-10

4.0 CHAPTER 4 – EXISTING AND PROJECTED WATER DEMANDS ...................................... 4-1

4.1 NON-POTABLE VERSUS POTABLE WATER USE..................................................... 4-1

4.2 PAST, CURRENT AND PROJECTED WATER USE BY SECTOR.............................. 4-1

4.2.1 Historical Water Use ........................................................................................ 4-2

4.2.2 Current Water Use ........................................................................................... 4-3

4.2.3 Projected Water Use........................................................................................ 4-3

4.2.4 Passive Water Savings .................................................................................... 4-5

4.2.5 Active Conservation Program Savings ............................................................ 4-6

4.2.6 Water Use for Lower Income Households ....................................................... 4-6

4.2.7 Climate Change Considerations ...................................................................... 4-7

4.3 DISTRIBUTIONS SYSTEM WATER LOSSES ............................................................. 4-7

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May 2026 ii City of Pittsburg
2025 Urban Water Management Plan

4.3.1 Previous Five Years Distribution System Losses ............................................ 4-8

4.3.2 Progress Toward Meeting the Water Loss Performance Standard ................. 4-8

4.4 SUBMITTAL TABLES SUMMARY................................................................................ 4-8

5.0 CHAPTER 5 – WATER CONSERVATION REQUIREMENTS............................................... 5-1

5.1 REPORTING REQUIREMENTS FOR RETAIL SUPPLIERS ....................................... 5-1

5.1.1 2020 Target & Historical Per Capita Use ......................................................... 5-1

5.2 SUPPLIER MET 2020 TARGET IN 2025...................................................................... 5-2

5.3 SUBMITTAL TABLES SUMMARY................................................................................ 5-3

6.0 CHAPTER 6 – NORMAL-YEAR WATER SUPPLY................................................................ 6-1

6.1 PURCHASED OR IMPORTED WATER ....................................................................... 6-1

6.2 GROUNDWATER ......................................................................................................... 6-2

6.2.1 Basin Description ............................................................................................. 6-3

6.2.1.1 Groundwater Basin ........................................................................ 6-3

6.2.2 Groundwater Management .............................................................................. 6-5

6.2.2.1 Groundwater Management Plan .................................................... 6-5

6.2.2.2 Integrated Regional Water Management Plan............................... 6-5

6.2.2.3 California Statewide Groundwater Elevation Monitoring Program . 6-6

6.2.2.4 Salt and Nutrient Management Program........................................ 6-6

6.2.3 Overdraft Conditions ........................................................................................ 6-6

6.2.4 Past Five Years Groundwater Pumping........................................................... 6-6

6.3 SURFACE WATER ....................................................................................................... 6-7

6.4 STORMWATER ............................................................................................................ 6-7

6.5 WASTEWATER AND RECYCLED WATER ................................................................. 6-7

6.5.1 Recycled Water Coordination .......................................................................... 6-7

6.5.2 Wastewater Collection, Treatment, and Disposal ............................................ 6-8

6.5.2.1 Wastewater Collected Within Service Area.................................... 6-8

6.5.2.2 Wastewater Treatment and Discharge Within Service Area .......... 6-8

6.5.3 Recycled Water System................................................................................... 6-9

6.5.4 Current, Potential, and Projected Recycled Water Uses ................................. 6-9

6.5.4.1 Current and Planned Uses of Recycled Water .............................. 6-10

6.5.4.2 Planned Versus Actual Use of Recycled Water............................. 6-12

6.5.4.3 Actions to Encourage and Optimize Future Recycled Water Use.. 6-12

6.6 DESALINATED WATER OPPORTUNITIES................................................................. 6-13

6.7 WATER EXCHANGES AND TRANSFERS .................................................................. 6-13

6.8 FUTURE WATER PROJECTS ..................................................................................... 6-13

6.9 SUMMARY OF EXISTING AND PLANNED SOURCES OF WATER........................... 6-14

6.10 SUBMITTAL TABLES SUMMARY................................................................................ 6-16

7.0 CHAPTER 7 – WATER SERVICE RELIABILITY ASSESSMENT ......................................... 7-1

7.1 CONSTRAINTS ON WATER SOURCES CONSIDERATIONS.................................... 7-1

7.1.1 Surface Water.................................................................................................. 7-2

7.1.1.1 Water Quality Factor ...................................................................... 7-2

7.1.1.2 Legal Factors ................................................................................. 7-3

7.1.2 Groundwater .................................................................................................... 7-3

7.1.2.1 Legal Factors ................................................................................. 7-3

7.1.2.2 Environmental Factors ................................................................... 7-4

7.1.2.3 Water Quality Factors .................................................................... 7-4

7.1.2.4 Climatic Factors ............................................................................. 7-4

7.1.3 Recycled Water................................................................................................ 7-4

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May 2026 iii City of Pittsburg
2025 Urban Water Management Plan

7.1.3.1 Legal Factors ................................................................................. 7-4

7.1.3.2 Water Quality Factors .................................................................... 7-5

7.2 WATER SERVICE RELIABILITY ASSESSMENT ........................................................ 7-5

7.2.1 WSRA Year-Type Characterization ................................................................. 7-5

7.2.2 WSRA Supply and Demand Comparison ........................................................ 7-7

7.2.2.1 Supply and Demand Comparisons – Normal Year ........................ 7-8

7.2.2.2 Supply and Demand Comparison – Single Dry Year..................... 7-8

7.2.2.3 Supply and Demand Comparison – Five Consecutive Dry Years.. 7-9

7.2.3 WSRA Description of Management Tools and Options ................................... 7-12

7.3 DROUGHT RISK ASSESSMENT ................................................................................. 7-12

7.3.1 DRA Data, Methods, and Basis for Water Shortage Conditions...................... 7-13

7.3.2 DRA Individual Water Source Reliability.......................................................... 7-13

7.3.3 DRA Total Water Supply and Use Comparison ............................................... 7-14

7.4 SUBMITTAL TABLES SUMMARY................................................................................ 7-15

8.0 CHAPTER 8 – WATER SHORTAGE CONTINGENCY PLAN ............................................... 8-1

8.1 WATER SUPPLY RELIABILITY ANALYSIS................................................................. 8-1

8.2 ANNUAL WATER SUPPLY AND DEMAND ASSESSMENT........................................ 8-2

8.2.1 Decision Making Process................................................................................. 8-3

8.2.2 Data and Methodologies .................................................................................. 8-5

8.2.2.1 Evaluation Criteria.......................................................................... 8-5

8.2.2.2 Water Supply.................................................................................. 8-5

8.2.2.3 Current Year Unconstrained Customer Demand ........................... 8-5

8.2.2.4 Current Year Available Supply ....................................................... 8-6

8.2.2.5 Infrastructure Considerations ......................................................... 8-6

8.3 WATER SHORTAGE LEVELS ..................................................................................... 8-6

8.4 SHORTAGE RESPONSE ACTIONS............................................................................ 8-9

8.4.1 Supply Augmentation....................................................................................... 8-10

8.4.2 Demand Reduction .......................................................................................... 8-10

8.4.3 Operational Changes ....................................................................................... 8-11

8.4.4 Additional Mandatory Restrictions ................................................................... 8-11

8.4.5 Emergency Response Plan ............................................................................. 8-11

8.4.6 Seismic Risk Assessment and Mitigation Plan ................................................ 8-11

8.4.7 Shortage Response Action Effectiveness........................................................ 8-16

8.5 COMMUNICATION PROTOCOLS ............................................................................... 8-16

8.6 COMPLIANCE AND ENFORCEMENT ......................................................................... 8-16

8.7 LEGAL AUTHORITIES ................................................................................................. 8-17

8.7.1 Declaration of Water Shortage......................................................................... 8-17

8.7.2 Proclamation of Local Emergency ................................................................... 8-18

8.8 FINANCIAL CONSEQUENCES OF A WATER SHORTAGE CONTINGENCY PLAN . 8-18

8.9 MONITORING AND REPORTING................................................................................ 8-18

8.10 WSCP REFINEMENT PROCEDURES......................................................................... 8-19

8.11 SPECIAL WATER FEATURE DISTINCTION ............................................................... 8-19

8.12 PLAN ADOPTION, SUBMITTAL, AVAILABILITY, AND AMENDMENT PROCEDURES…….. ................................................................................................... 8-20

8.13 SUBMITTAL TABLES SUMMARY................................................................................ 8-20

9.0 CHAPTER 9 – DEMAND MANAGEMENT MEASURES........................................................ 9-1

9.1 DEMAND MANAGEMENT MEASURES FOR RETAIL SUPPLIERS ........................... 9-1

9.1.1 Required Demand Management Measures ..................................................... 9-1

9.1.1.1 Water-Waste Prevention Ordinances............................................. 9-1

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May 2026 iv City of Pittsburg
2025 Urban Water Management Plan

9.1.1.2 Metering…...................................................................................... 9-2

9.1.1.3 Conservation Pricing...................................................................... 9-3

9.1.1.4 Public Education and Outreach...................................................... 9-3

9.1.1.5 Programs to Assess and Manage Distribution System Real Loss . 9-4

9.1.1.6 Water Conservation Program Coordination and Staffing Support . 9-4

9.1.1.7 Other Demand Management Measures......................................... 9-4

9.2 SUBMITTAL TABLES SUMMARY................................................................................ 9-5

10.0 CHAPTER 10 –PLAN ADOPTION ......................................................................................... 10-1

10.1 PLAN COMPLETION TIMELINE .................................................................................. 10-1

10.2 NOTICE OF PLAN PREPARATION ............................................................................. 10-1

10.3 NOTICE OF PUBLIC HEARING ................................................................................... 10-2

10.4 PUBLIC HEARING AND ADOPTION ........................................................................... 10-2

10.5 PLAN SUBMITTAL........................................................................................................ 10-3

10.5.1 Submitting a UWMP to DWR ........................................................................... 10-3

10.5.2 Electronic Data Submittal................................................................................. 10-3

10.5.3 Submitting a UWMP to the California State Library ......................................... 10-3

10.5.4 Submitting a UWMP to Cities and Counties .................................................... 10-3

10.6 PUBLIC AVAILABILITY................................................................................................. 10-4

10.7 DWR REVIEW .............................................................................................................. 10-4

10.8 SUBMITTAL TABLES SUMMARY................................................................................ 10-4

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May 2026 v City of Pittsburg
2025 Urban Water Management Plan
City of Pittsburg
2025 Urban Water Management Plan
Figures Page No.

Figure 1-1 Planning Horizons.............................................................................................. 1-6 Figure 3-1 Regional Location Map ...................................................................................... 3-3 Figure 3-2 Existing Service Area......................................................................................... 3-4 Figure 3-3 Existing Land Use Map ...................................................................................... 3-5 Figure 3-4 Future Land Use Map ........................................................................................ 3-6 Figure 3-5 Historical Annual Rainfall ................................................................................... 3-8 Figure 4-1 Historic Water Use and Population .................................................................... 4-2 Figure 5-1 Historic Water Consumption Per Capita vs. 2020 Target .................................. 5-2 Figure 6-1 Contra Costa Water District – Contra Costa Canal............................................ 6-2 Figure 6-2 Groundwater Subbasins .................................................................................... 6-4 Figure 6-3 Reclaimed Water Users ................................................................................... 6-11 Figure 8-1 Annual Assessment Reporting Timeline ............................................................ 8-3 Tables Page No.

Table 2-1 Public Water Systems........................................................................................ 2-2 Table 2-2 Plan Identification............................................................................................... 2-2 Table 2-3 Supplier Identification......................................................................................... 2-3 Table 2-4 Water Supplier Information Exchange ............................................................... 2-4 Table 3-1A Average Climate Data........................................................................................ 3-7 Table 3-1 Population – Current and Projected................................................................. 3-10 Table 4-1 2025 Actual Total Users for Potable and Non-Potable Water............................ 4-3 Table 4-2 Total Uses of Potable, and Non-Potable Water – Projected.............................. 4-4 Table 4-3 Inclusion in Water Use Projections .................................................................... 4-5 Table 4-4 Passive Water Savings Projections ................................................................... 4-6 Table 4-5 Water Loss Audit Reporting ............................................................................... 4-8 Table 4-6 Progress Towards 2028 Water Loss Standard ................................................ 4-10 Table 5-1 SB X7-7 2020 Target Progress.......................................................................... 5-3 Table 6-1 Groundwater Volume Pumped........................................................................... 6-7 Table 6-2 Wastewater Collected Within Service Area in 2025........................................... 6-8 Table 6-3 Wastewater Treatment and Outcomes Within Service Area in 2025................. 6-9 Table 6-4 Recycled Water Direct Beneficial Uses Within Service Area........................... 6-10 Table 6-5 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual ........ 6-12 Table 6-6 Methods to Encourage Future Recycled Water Use........................................ 6-13 Table 6-7 Expected Future Water Supply Projects or Programs ..................................... 6-15 Table 6-8 Water Supplies – 2025 Actual.......................................................................... 6-16 Table 6-9 Water Supplies – Projected ............................................................................. 6-16 Table 7-1 Basis of Water Year Data (Reliability Assessment) ........................................... 7-6 Table 7-2 Normal Year Supply and Demand Comparison................................................. 7-8 Table 7-3 Single Dry Year Supply and Demand Comparison............................................ 7-9 Table 7-4 Multiple Dry Years Supply and Demand Comparison...................................... 7-10 Table 7-5 Five-Year Drought Risk Assessment ............................................................... 7-14

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City of Pittsburg
2025 Urban Water Management Plan
Tables Page No.

Table 8-1A Annual Assessment Reporting Milestone .......................................................... 8-4 Table 8-1B DWR Water Shortage Levels............................................................................. 8-7 Table 8-1C Water Shortage Contingency Plan Levels ......................................................... 8-8 Table 8-1 Cross-reference for Standard vs Supplier Shortage Levels............................... 8-9 Table 8-2 Supply Augmentation and Other Actions ......................................................... 8-10 Table 8-3 Demand Reduction Actions ............................................................................. 8-12 Table 8-3A Reduction Action Matrix ................................................................................... 8-15 Table 8-4 Financial Consequences of WSCP.................................................................. 8-19 Table 10-1 Notification to Cities and Counties ................................................................... 10-2 Appendices
Appendix A DWR Checklist
Appendix B DWR Submittal Tables
Appendix C Urban Water Management Plan Public Notices and Adoption

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Acronyms and
Abbreviations Description
Act Urban Water Management Planning Act
AF acre-feet
AMI advanced meter infrastructure
AMR automatic meter reading
AWWA American Water Works Association
CCAP Climate Change Action Plan
CCR California Code of Regulations
CDEC California Data Exchange Center
CEQA California Environmental Quality Act
CII commercial, industrial and institutional
CIMIS California Irrigation Management Information System CY Calendar Year
Delta Sacramento–San Joaquin River Delta
DIM dedicated irrigation meter(s)
DMM demand measurement measure(s)
DPR direct potable reuse
DRA Drought Risk Assessment
DWR California Department of Water Resources
eAR Electronic Annual Reporting
ERP Emergency Response Plan
EWEAP Extrema Weather Event Action Plan
GPCD gallons per-capita per day
GPMD gallons per mile of main per day
GPSCD gallons per service connection per day
GSA Groundwater Sustainability Agency(ies)
GSP Groundwater Sustainability Plan(s)
Guidebook Urban Water Management Plan Guidebook
IPR indirect potable reuse
IRWM Integrated Regional Water Management
NAICS North American Industry Classification System
NOAA National Oceanographic and Atmospheric Agency
NPDES National Pollutant Discharge Elimination System
PWS public water system(s)
PWSID public water system identification number
R-GPCD residential gallons per-capita per day
RHNA regional housing needs allocation
RUWMP Regional Urban Water Management Plan
SDWIS Safe Drinking Water Information System
SGMA Sustainable Groundwater Management Act

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Acronyms and
Abbreviations Description
State Water Board State Water Resources Control Board
Supplier urban water supplier
SWP State Water Project
USGS U.S. Geological Survey
UWMP Urban Water Management Plan
UWUO urban water-use objective
VAR Volumetric Annual Report of Wastewater and Recycled Water WDR waste discharge requirements
WRR water recycling requirements
WSCP Water Shortage Contingency Plan
WSRA Water Service Reliability Assessment

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202City of Pittsburg 5

1.0 CHAPTER 1 – INTRODUCTION AND OVERVIEW
This chapter introduces the purpose of the Urban Water Management Plan (UWMP), its importance, and its overall focus intended to meet statuary reporting requirements for submission to the California Department of Water Resources (DWR).

Urban Water Management Plan Focus
The purpose of the Urban Water Management Plan (UWMP) is to review and enhance the reliability of urban water supplies, ensure that future beneficial uses are supported by adequate water supply availability, promote policies and programs that encourage water conservation, and provide a framework for responding to water supply shortages and drought conditions. The 2025 UWMP focuses on the following water-planning fundamentals:
• Preparing a roadmap for
addressing current and longterm future water use.
• Evaluating potable and nonpotable water supplies,
assessing water deliveries, and
identifying constraints on water
availability under certain
regulatory and hydrological
conditions.
• Evaluating water supply
reliability by integrating the water-use analyses with the water supply analyses to summarize the water service reliability assessment under normal conditions, single dry-year conditions, and five consecutive dry years through year 2050.
• Preparing a realistic Drought Risk Assessment (DRA) by including integrated water supplies and projected water use in a hypothetical consecutive five-year drought condition. • Developing an effective Water Shortage Contingency Plan (WSCP) that specifies opportunities to reduce demand and augment supplies under various, and even unpredictable, water shortage conditions.

Reinforcing the coordination between land-use planning, water supply planning, and climate change, make the City’s 2025 UWMP both a valuable water management and water planning tool.

Current and Future Water Use
Potable and Nonpotable Water Supplies
Water Supply Reliability
Drought Risk Assessment (DRA)
Water Shortage Contingency Plan (WSCP)

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1.1 PURPOSE
The City of Pittsburg is required to submit an Urban Water Management Plan to the Department of Water Resources (DWR) in accordance with the California Water Code. The purpose of the UWMP is to review and enhance the reliability of urban water supplies, ensure that future beneficial uses are supported by adequate water supply availability, promote policies and programs that encourage water conservation, and provide a framework for responding to water supply shortages and drought conditions. In addition to being filed every five years, the UWMP must comply with the requirements established in the Urban Water Management Planning Act (UWMP Act) of 1983, including all subsequent amendments.

The UWMP Act requires agencies providing water for municipal purposes to more than 3,000 customers or serving more than 3,000 acre-feet annually to prepare and adopt an Urban Water Management Plan (UWMP) every five years, demonstrating water supply reliability in normal, single dry, and multiple dry water years. The UWMP Act also requires the California Department of Water Resources (DWR) to report to the Legislature on the status of UWMPs.

1.2 BACKGROUND
The drought of 1976-1977 caused widespread water supply shortages across California. Many cities and water districts were forced to seek additional water sources, highlighting the urgent need for comprehensive, long-term water management planning at both the local and statewide levels. In response, the Urban Water Management Planning Act (UWMPA) was proposed and adopted in 1983 to reduce the risk of future emergencies caused by inadequate water resource planning. State Assembly Bill 797 amended Division 6 of California Water Code in 1983, formally establishing the UWMPA. Since its enactment, more than 20 amendments have been made, expanding the data requirements and the planning elements included in the 2025 UWMP.

Early amendments to the UWMPA required a 20-year planning horizon, evaluated in 5-year increments, to compare water demand with available water supplies. More recently, these planning projections have been extended to a 25-year planning horizon to preserve the 20-year projections while allowing sufficient time for the preparation of the subsequent UWMP.

Additional amendments to the UWMPA require that the City’s UWMP includes a Water Shortage Contingency Plan that meets the specifications of the Act as well as provisions for demand management measures and recycled water use. Recycled water use was added to reporting requirements because it provides a reliable alternative water source and can help meet future water demand. Individual water purveyors, in coordination with other water purveyors in the same general area where practicable, are responsible for preparing the Water Shortage Contingency Plan. Each supplier must also describe the water demand management measures currently in practice or scheduled for implementation. Notable Amendments include:

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• 2009, SBX7-7 requires the state and its municipal water purveyors to achieve a 20 percent reduction in urban per capita water usage by the year 2020. The “20X2020” plan set an interim goal of a 10 percent reduction by 2015 and a 20 percent reduction by 2020. • 2018, SB606 adds new requirements to the UWMP process as well as established updated urban water use objectives and water use reporting requirements:
o Prepare a drought risk assessment that examines water shortage risks for a drought lasting for the next five years.
o Prepare a comprehensive Water Shortage Contingency Plan that will include water budgeting forecast procedures, standard water shortage levels, shortage response actions, and other protocols.
o Enacts an annually required water supply and demand assessment wherein an urban water supplier will assess local demand and supply conditions and provide that information to DWR.
• 2024, “Making Conservation a California Way of Life” regulation, adopted by The State Water Resources Control Board (SWRCB) in summer 2024, went into effect on January 1, 2025. The regulation established efficiency goals for urban water retail suppliers to implement two enacted legislative mandates (AB 1668 and SB 606) in 2018.

Under the new regulation:
o Suppliers are held to calculate annual “urban water use objectives” and should include budgets for a subset of water uses.
o The regulation provides for variances and temporary provisions to address unique water use circumstances.
o Suppliers must annually demonstrate compliance with objectives beginning January 1, 2027.

1.3 UWMP IMPORTANCE
The importance of the UWMP was exceptionally well defined in the 2025 guidebook and included in this section.

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1.4 NOTABLE UPDATES SINCE 2020 UWMP
The City of Pittsburg has been preparing and submitting an UWMP every 5 years, and the last submittal was for the 2020 UWMP, which was adopted on September 20th, 2021.

This 2020 UWMP addressed many of the same elements required for the 2025 UWMP, including:
plan preparation, service area description, water use characterization, SBX7-7 baselines, 2020 targets, normal-year water supply characterization, water service reliability and drought risk Urban Water Management Plan Importance
A UWMP is the legal and technical water management foundation for Suppliers throughout California. A well-constructed UWMP can save Suppliers time and money, and it provides the Supplier’s staff, the public, and elected officials with an understanding of past, current, and future water conditions and management. The UWMP integrates local and regional landuse planning, regional water supply, infrastructure, and demand management projects, as well as statewide issues of concern like climate change and regulatory revisions. In short, the UWMP gathers, characterizes, and synthesizes water-related information from numerous sources into a plan with local, regional, and statewide practical utility.

Thoughtful urban water management planning provides an opportunity for a Supplier to integrate supplies and use in a balanced and methodical planning platform that addresses short-term and long-term water-planning conditions. In so doing, a Supplier will:
• Assess changes in natural hydrology, climate, and groundwater conditions • Anticipate the implications of regional, State, and federal regulations • Understand supply conditions and water-use variability • Identify regional constraints on, or opportunities for, shared water resources • Integrate local land-use changes, development, plans, and population growth • Prepare for water shortages and unforeseen calamities • Anticipate infrastructure improvements
• Recognize project funding needs and opportunities
Thus, a UWMP provides a supplier with a reliable water management action plan that can be referenced during management decisions related to water supplies and especially during droughts. Importantly, UWMPs provide DWR, the State Water Resources Control Board (State Water Board), and the Legislature with an assessment of statewide water reliability. 2010
UWMP
2015
UWMP
2020
UWMP
2025
UWMP

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2025 Urban Water Management Plan
assessment, water shortage contingency plan, demand management measures, and plan adoption. On May 23rd, 2022, DWR completed the review of the City’s 2020 UWMP and its supplements, issuing a letter of completeness.

The 2025 UWMP guidebook identifies the following major updates since the 2020 UWMP:
2025 UWMP Updates Description
Changes in Water Code Minor Water Code updates have been made since 2020, but none affect the 2025 UWMP requirements
Suppliers with Multiple
Public Water Systems
(PWSs)
State agencies now use consistent criteria to decide when a supplier operating multiple PWSs counts as an Urban Water Supplier subject to UWMP rules
DWR Submittal Tables Submittal tables have been updated to match the current reporting year, improve accuracy, and better show what Water Code requires versus what is optional.

Water Loss Standard
Reporting
Water Loss Standard rules haven’t changed, but updated standards for 2028 are now available. New guidance explains how suppliers should report progress on meeting these standards in their 2025 UWMPs.

Direct Potable Reuse Regulations for direct potable reuse have been adopted since the last reporting cycle; minor updates were made to demand and supply tables to support this new reporting requirement.

Lower-Income Housing New guidance clarifies how suppliers should project water demand for lower-income housing, integrating RHNA information and updated land-use planning.

Reporting Groundwater
Recharge and Other
Water Storage
Updated guidance clarifies how to report water placed into storage and later withdrawn, ensuring that water is not double-counted when moving between long-term and short-term storage.

1.5 UWMP IN RELATION TO OTHER EFFORTS
In addition to preparing the 2025 Urban Water Management Plan, the City has the following relevant infrastructure planning efforts:
• Water System Master Plan (2023 Draft, 2026 Update in Progress). • Wastewater System Master Plan (2023 Draft, 2026 Update in Progress).

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2025 Urban Water Management Plan
The planning horizons of these documents, in comparison with the 2025 UWMP horizon, are illustrated as Figure 1-1. These master plans include relevant information on growth, as well as population and demand projections.

The preparation of the 2025 UWMP complements these planning efforts by providing guidance for efficient water use throughout the master planning horizon and identifying water conservation measures that influence both water demands and associated wastewater flows. Efforts have been made to ensure consistency between the water demand projections, and the projected water use for the 2025 UWMP and current master planning updates.

Figure 1-1 Planning Horizons

1.6 UWMPS AND GRANT OR LOAN ELIGIBILITY
To be eligible for any water grant or loan administered by DWR, an agency must have a current UWMP on file that has been determined by DWR to meet the requirements of the following Water Code.

California Water Code
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. 10608.56 (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. 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.

Beginning in 2016, changes to California law require that urban retail water suppliers comply with the water conservation requirements established by the Water Conservation Act of 2009 to be eligible for State water grants or loans. For 2025 UWMPs, compliance with this Act means that a

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May 2026 1-7 City of Pittsburg
2025 Urban Water Management Plan
water agency must have met its 2025 Urban Water Use Target, which is discussed further in another chapter. This compliance must be documented and reported in the 2025 UWMP.

1.7 SUBMITTAL TABLES
This report includes the completed tables required by DWR in the 2025 UWMP Guidebook (January 2026), and included in Appendix B.

California Water Code
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.

As part of this 2025 UWMP, submittal tables required by the 2025 UWMP Guidebook were completed electronically using the DWR provided 2025 MS Excel workbook, and also filed electronically with DWR. Additionally, each 2025 submittal table is included in this document, within its respective section. Furthermore, each chapter includes a section summarizing the submittal tables.

1.8 REPORT ORGANIZATION
This report is organized in accordance with the outline suggested by the Department of Water Resources for the 2025 Urban Water Management Plans. According to the 2025 UWMP Guidebook, the following items and updates are provided with further explanation.

Chapter Title Description
Introduction
and Overview
This chapter introduces the purpose of the Urban Water
Management Plan (UWMP), its importance, and its overall focus to meet statuary reporting requirements for submission to the California Department of Water Resources (DWR).

Plan
Preparation
This chapter describes the process used as well as the
coordination and outreach during the preparation of the UWMP.

The chapter also includes guidance and tables to ensure consistent use throughout the UWMP for two key elements: the use of a fiscal or calendar year, and the specific units of measurement the City uses to report water volumes.

Service Area
Description
This chapter describes the City’s water service area, including existing and future land use types, climate, and historical and projected population.

Chapter 3
Chapter 2
Chapter 1

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2025 Urban Water Management Plan
Existing and
Projected
Water Demands
This chapter provides a description of the current water uses as well as projected water uses through year 2050. Additionally, a description of potential recycled water uses is included.

Water
Conservation
Requirements
This chapter includes the City’s per-capita water conservation target requirements (SB X7-7) as calculated in previous UWMPs and monitors compliance in accordance with the Water Code. As California built the Urban Water Use Objective (UWUO)
framework on top of the conservation goals from SB X7-7, using it as a benchmark and requiring suppliers’ overall objectives to go beyond the older 20% by 2020 target to ensure ongoing water conservation efforts.

Normal-Year
Water Supply
This chapter summarizes the City’s current and planned water supply sources and volumes, including characterization of the groundwater basins.

Water Service
Reliability
Assessment
This chapter assesses the reliability of the City’s water supply under normal conditions, single-year dry conditions, and consecutive five-year dry conditions. The assessment includes a comparison of water use versus expected water supply through 2050, and includes the Drought Risk Assessment.

Water Shortage
Contingency
Plan
This chapter presents the City's Water Shortage Contingency Plan (WSCP), a required framework for responding to water shortages through standardized conservation stages, response actions, and emergency supply interruption procedures.

Demand
Management
Measures
This chapter documents the City’s efforts to reduce water demand using specific demand measurement measures (DMMs) as well as any other actions to maintain ongoing water conservation.

Plan Adoption This chapter summarizes the process for adopting and submitting the UWMP as well as the ways the public can access the adopted UWMP.

Appendices
The appendices provide supplemental and relevant information, in support of the report chapters.

Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10

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2.0 CHAPTER 2 – PLAN PREPARATION
This chapter describes the process used as well as the coordination and outreach during the preparation of the UWMP. The chapter also includes guidance and tables to ensure consistent use throughout the UWMP for two key elements: the use of a fiscal or calendar year, and the specific units of measurement the City uses to report water volumes.

2.1 BASIS FOR PREPARING THIS PLAN
This section documents the basis for preparing the 2025 UWMP and includes references to the relevant California Water Code.

California Water Code
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.
10608.12 (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.
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.

The California Water Code (CWC) defines an “urban water supplier” as a publicly or privately owned supplier that provides water for municipal purposes either directly or indirectly to more than 3,000 customers or supplies more than 3,000 acre-feet of water annually. At the time of preparation of the 2025 UWMP, the City of Pittsburg supplied water to over 20,834 active service connections in 2025, with a corresponding 2025 volume of approximately 8,280 acre-ft of water supplied, as summarized in Table 2-1. The City of Pittsburg has been preparing an Urban Water Management Plan every five years and submitting to DWR.

Chapter Focus
This chapter provides guidance on determining whether a City is required to prepare a UWMP, the various levels of regional coordination that a City may employ, and how the City can document consistency with plan preparation requirements.

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The City’s Public Water System identification number (PWSID), regulated by the State Water Board’s Division of Drinking Water, is also documented on Table 2-1.

Submittal Table 2-1 Retail: Public Water Systems
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
Volume of
Water Supplied
2025
(AF)
CA0710008 City of Pittsburg 20,834 8,280
Total 20,834 8,280

2.2 INDIVIDUAL OR REGIONAL PLAN
The City’s 2025 UWMP is prepared as an individual plan, and the City is not part of any regional alliance for planning purposes, as summarized in Table 2-2. However, the City does cooperate with other agencies, including the Contra Costa Water District, in the preparation of its UWMP.

California Water Code
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, efficient water use, and improved local drought resilience.

Submittal Table 2-2: Plan Identification
Select Type of Plan
Name of Regional
Alliance or
RUWMP
Individual UWMP
Water Supplier is also a member of a SB X7-7
Regional Alliance
Conta Costa Water
District Alliance
Regional Urban Water Management Plan
(RUWMP)

2.3 SUPPLIER IDENTIFICATION
This section discusses supplier identification.

California Water Code
10608.20 (a)(1) Urban retail water suppliers … may determine the targets on a fiscal year or calendar year basis.

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This UWMP has been prepared using calendar year (CY) data and incorporates complete data for 2025. All units of measure reported in the tables and submittal tables are in acre-feet (AF), as documented in Table 2-3.

Submittal Table 2-3: Supplier Identification
Type of Supplier
Supplier is a wholesaler
Supplier is a retailer
Fiscal or Calendar Year
UWMP Tables Are in Calendar Years
UWMP Tables Are in Fiscal Years
Units of Measure Used in UWMP1
AF

2.4 COORDINATION AND OUTREACH
This section describes the outreach and coordination efforts conducted for 2025 UWMP. More detailed notifications are documented in a separate chapter.

California Water Code
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.
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.

The City’s 2025 UWMP is an update to the 2020 UWMP and is intended to address the aspects of the UWMPA that fall under the City’s authority, specifically water supply and water use. The draft plan has been shared with regional stakeholders and made available to the public in electronic formats. The wholesale water suppliers informed of the City’s projected water use are listed in Table 2-4.

The UWMPA requires that the adopted UWMP demonstrate the water agency solicited public participation. In accordance with this requirement, the City held a public hearing to allow community members to provide comments, learn about existing and future water supplies, and raise concerns towards the plan being adopted. A notice of the public hearing was published in the local newspaper on _____& _____, 2026, notifying interested parties that the draft 2025

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UWMP was available at various City facilities and on the City’s web page (www.pittsburgca.gov) for review two successive weeks prior to adoption. After public review, the plan was adopted on _____, 2026.

Submittal Table 2-4 Retail: Water Supplier Information Exchange Water Code Section 10631(h)
Wholesale Water Supplier Name
Contra Costa Water District

2.5 SUBMITTAL TABLES SUMMARY
This chapter included the following submittal table(s):
• Table 2-1: Public Water Systems
• Table 2-2: Plan Identification
• Table 2-3: Supplier Identification
• Table 2-4: Water Supplier Information Exchange

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3.0 CHAPTER 3 – SERVICE AREA DESCRIPTION
This chapter describes the City’s water service area, including existing and future land use types, climate, and historical and projected population.

3.1 GENERAL DESCRIPTION
This section documents the City’s location, service area, land use, and socioeconomic conditions.

California Water Code
10631 (a) Describe the service area of the supplier…

3.1.1 Location
The City of Pittsburg is located in the eastern side of California’s San Francisco Bay in Contra Costa County, as shown in Figure 3-1. It is bound to the north by the Suisun Bay, the City of Antioch on the east, and is surrounded by undeveloped hills to the south and the Concord Naval Weapons Station on the west.

3.1.2 Land Use
The City’s General Plan was originally adopted in 2004 and identified planned future growth within the City’s Urban Limit Line. Subsequent amendments to the General Plan Land Use designations modified these future land use conditions. In April 2024, the City adopted the 2040 General Plan, which reflects updated planned land use conditions. The City’s 2023 Water System Master Plan (WSMP) incorporates these updated land use assumptions as a basis for demand projections.

The existing and future land use maps from the adopted 2040 General Plan are provided in this chapter (Figure 3-3 and Figure 3-4) and serve as a reasonable basis for future water system planning.

Chapter Focus
This chapter describes the City’s water service area, including the discussion of the City’s location, the boundaries of the water service area, existing and future land use types, and climate. It also summarizes historical and projected population trends and provides an overview of the City’s demographics and socioeconomic conditions.

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3.1.3 Socioeconomic Conditions
Based on data from the U.S. Census American Community Survey, the City has a median household income of approximately $99,861 per year and a per capita income of approximately $38,833 per year as of 2024. Approximately 23.6% of the population has a bachelor’s degree or higher and 81.5% have a high school diploma or higher. Approximately 11.2% of the population lives below the poverty line.

According to population and housing statistics prepared by the California Department of Finance (DOF), the City has an average household occupancy of 3.13 people per household in 2025.

Approximately 79% of the current residential units are single-family residences, with the other 21% reflecting multiple-family dwelling units. The 2025 residential vacancy rate is approximately

2.9%.

According to the 2024 U.S. Census–derived data compiled by Data USA, the largest employment sectors for the City residents are Health Care & Social Assistance (17.6%), Retail Trade (10.9%), and Construction (9.88%) based on absolute numbers of employed residents.

3.2 SERVICE AREA BOUNDARY MAPS
The City’s water service area is consistent with the City limits (Figure 3-2) and reflects a total area of approximately 15.6 square miles. The water service area is a subset of the Pittsburg Planning Area, which is a larger area that extends beyond the City limits to the Sphere of Influence and is generally undeveloped. A portion of this undeveloped planning area, defined by the Urban Limit Line approved in 2007, is planned for eventual service by the City as development continues.

3.3 SERVICE AREA CLIMATE
The following sections include a description of the City’s historical climate data as well as a general summary of the potential impacts due to climate change.

California Water Code
10630 It is the intention of the Legislature, in enacting this part, to permit levels of water management planning … while accounting for impacts from climate change.
10631 (a) Describe the service area of the supplier, including … “climate…”

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Pittsburg

SUISUN BAY
Antioch
Concord
Walnut Creek
4 680
680
680
4 12
Grizzly Island
Wildlife Area
Lower Sherman
Island Wildlife Area
Mount Diablo
State Park
Black Diamond Mines
Regional Preserve
Briones
Regional Park
Figure 3-1
Regional Location Map
0 0.5 1 2
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City Limits
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PRELIMINARY
Pacific
Ocean
California Nevada
Pittsburg

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SOLANO COUNTY

CONTRA COSTA COUNTY

CITY OF PITTSBURG

CITY OF ANTIOCH

BLACK DIAMOND

REGIONAL

PRESERVE

CONCORD
NAVAL

WEAPONS

STATION
BROWNS
ISLAND
4 4
4 SUISUN BAY
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Figure 3-2
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2025 Urban Water Management Plan
City of Pittsburg

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SUISUN BAY
4 4
Kirker Pass Rd
Bailey Rd
Somersville Rd
James Donlon Blvd
Delta de Anza Trl
Delta Fair Blvd
Pittsburg Antioch Hwy
Hanlon Way
Port Chicago Hwy
Willow Pass Rd
Port Chicago Hwy
W Leland Rd
N Parkside Dr
Railroad Ave
Buchanan Rd
Harbor St
Evora Rd
San Marco Blvd
Legend
Existing Land Use
Single-Family Residential
Multi-Family Residential
Institutional
Commercial
Industrial
Land
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Vacant
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SUISUN BAY
Kirker Pass Rd
Bailey Rd
Somersville Rd
James Donlon Blvd
Delta de Anza Trl
Delta Fair Blvd
Pittsburg Antioch Hwy
Hanlon Way
Port Chicago Hwy
Willow Pass Rd
Port Chicago Hwy
W Leland Rd
N Parkside Dr
Railroad Ave
Buchanan Rd
Harbor St
Evora Rd
San Marco Blvd
4 4
Legend
General Plan Land Use
Low Density Residential
Medium Density Residential
High Density Residential
Very High Density Residential
Community Commercial
Service Commercial
Downtown Commercial
Regional Commercial
Marina Commercial
Industrial
Employment Center Industrial
Mixed Use (Downtown)
Mixed Use (General)
Mixed Use (P/BP BART)
Mixed Use (Railroad Ave SPA)
Mixed Use (Community Commercial)
Public/Institutional
Open Space
Park
Landfill
Utility/ROW
Water
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May 2026 3-7 City of Pittsburg
2025 Urban Water Management Plan

3.3.1 Historic Climate Data
The City experiences a Mediterranean climate with hot
summers and mild winters. The mean annual temperature
in the City is 73 degrees Fahrenheit (°F), with the hottest month being August at approximately 88.6 °F for the
average high, and the coldest month being January, with an average low of approximately 37.3 °F. The City has a historical average annual rainfall of approximately 14
inches, with the majority of the rainfall occurring from November to March. These months typically experience
between 2 to 4 inches total. The average annual
evapotranspiration (Eto) is approximately 51.1 inches.

Average climate data is included in Table 3-1A.

Table 3-1A Average Climate Data
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average
ETo
(inches)

1.3 2.0 3.2 4.8 6.5 7.5 7.7 6.8 5.0 3.6 1.8 1.1 51.1
Rainfall
(inches) 3.0 2.4 2.2 0.9 0.4 0.1 0.0 0.0 0.1 0.7 1.6 2.6 14.0 Average
Maximum
Temp. (°F)

55.8 60.6 64.4 71 77.4 84.5 88.4 88.6 85.2 78.0 65.4 56.3 73.0 Average
Minimum
Temp. (°F)

37.3 39.2 42.1 46.2 51.2 55.7 57.8 57.9 55.9 49.7 42.3 38.1 47.8 Notes:

1. Source: WRCC station 040232 (Mar 1955 – May 2016)

2. Source: CIMIS Station 170 (Jan 2017 – Dec 2025)
Average
Temperature
60°F
Average
Rainfall
14"

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May 2026 3-8 City of Pittsburg
2025 Urban Water Management Plan
Historical rainfall in the city is shown in Figure 3-5 and has ranged from 4.51 inches in 2013 to

27.76 inches in 1983.

Figure 3-5 Historical Annual Rainfall
Notes:

1. Source: NOAA USC00040227

2. Source: NOAA USC00040232

3. Source: NOAA USW00023254

3.3.2 Climate Change
As part of the 2025 UWMP update, the California Water Code requires urban water suppliers to provide a general description of the climate change impact within the service area. Based on the City’s location and current climate, the most notable changes in climate are related to increasing average temperatures, intensifying storm events, and periods of extended drought. Other effects, such as decreasing snowpack or rising sea levels do not have a direct impact on the City’s water demand or supply. Changes in annual precipitation and temperature will likely have an impact on the City’s overall water use as well as available supply volumes.

The following sections summarize the potential impacts to the City’s water service area due to climate change. The ECCC IRWM plan update 2019 included a climate change vulnerability assessment for East Contra Costa County, which includes the City’s service area. This section also includes a brief summary of local climate change modeling data available from the State of California’s Cal-Adapt Climate Modeling System.
0 5
10 15
20 25
30 19501953195619591962196519681971197419771980198319861989199219951998200120042007201020132016201920222025 Precipitation (Inches)
Year

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May 2026 3-9 City of Pittsburg
2025 Urban Water Management Plan

3.3.2.1 Water Supply
The City’s potable water supply is comprised of two sources, both of which are treated at the Water Treatment Plant (WTP). These sources include surface water deliveries supplied by the Contra Costa Water District (CCWD), which makes up the vast majority of the City’s supply, as well as groundwater supplies provided from two groundwater wells.

CCWD, in addition to other water suppliers, maintains intakes from the Delta as a source of surface water supply. This water source is considered unreliable due to already observed effects of seasonal runoff patterns and reduced waters supply reliability. Additionally, the quality of freshwater from the Delta is dependent on the operation of existing Central Valley Project/State Water Project (CVP/SWP) storage reservoirs, which are impacted by changes in snowpack and upstream river conditions. Sea level rise also has the potential to render CCWD’s existing Delta intake unusable, with sea water inundation producing brackish or saline water.

Consistent with other regional efforts CCWD has implemented adaptation measures to address the impacts of climate change, including the operation of the Los Vaqueros Reservoir as a blended water source to offset saline water conditions. CCWD also operates the Delta intakes to maximize water quality and minimize pumping costs.

3.3.2.2 Groundwater
The City operates two groundwater wells which act as an additional source of water supply. While the City’s current groundwater supply is generally considered reliable during various normal and dry water years, changes in local hydrology could affect the current natural recharge rates. This change could result in a reduction of the amount of groundwater that could be pumped sustainably. Recharge projects and participation in regional groundwater management planning efforts will help mitigate the effect of climate change on groundwater supplies.

3.3.2.3 Flooding
Flooding due to levee overtopping or failure poses a risk throughout Eastern Contra Costa County. Levee failure or flooding could contribute to reductions in water supply reliability, water treatment, and wastewater treatment and disposal. Water intake facilities, such as those operated by CCWD from the Delta, could be susceptible to sea water inundation.

3.3.2.4 Water Quality
Climate change will likely impact water quality management throughout the Eastern Contra Costa County region. CCWD’s Delta surface water supply is susceptible to water quality problems such as an increase in salinity from Delta intakes, increased turbidity and pollutants transported by river and stream flows, increased spikes in disinfectant byproduct precursors, increased contaminant concentrations during droughts, and lower dissolved oxygen levels. Additionally, chloride, bromide, and total organic carbon present in Delta water would dramatically increase should existing levee protection systems fail.

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May 2026 3-10 City of Pittsburg
2025 Urban Water Management Plan

3.4 SERVICE AREA POPULATION AND DEMOGRAPHICS
The City is a growing community with over 6.6% percent of the Contra Costa County population residing within the City limits. Department of Finance records estimate the 2025 population of Pittsburg at 76,374.

3.4.1 Service Area Population
California Water Code
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 current and projected service area population is summarized in Table 3-1. The population projections are based on the following growth rates:
• 2006-2025: The historical growth rate average is calculated at 1% per year. • 2026-2050: Assumes 1% per year based on the historical growth rate and information given from the City on population projections.

According to 2025 United States Census Bureau’s data, the City has a racially diverse population which is White (19.3%), Black or African American (14.5%), American Indian and Alaska Native (1.1%), Asian (19.7%), Native Hawaiian and Pacific Islander (1.4%), Hispanic or Latino (43%), with the rest more than one race or other race.

Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
2025 2030 2035 2040 2045 2050 (opt)
76,374 80,270 84,364 88,668 93,191 97,944

3.5 SUBMITTAL TABLES SUMMARY
This chapter included the following submittal table(s):
• Table 3-1: Population-Current and Projected

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202City of Pittsburg 5

4.0 CHAPTER 4 – EXISTING AND PROJECTED WATER DEMANDS
This chapter provides a description of the current water uses as well as projected water uses through year 2050. Additionally, a description of potential recycled water uses is included.

4.1 NON-POTABLE VERSUS POTABLE WATER USE
The California State Water Code requires documentation of water use within the City’s service area for potable, recycled, and raw water demands, as applicable. Currently, the City delivers only potable water within its service area. However, Delta Diablo operates a recycled non-potable water distribution system that delivers non-potable water supplies to customers within the City’s service area. While the City is not responsible for the operation or maintenance of this nonpotable water infrastructure, a summary of the current and projected non-potable water use is also included in the following sections.

4.2 PAST, CURRENT AND PROJECTED WATER USE BY SECTOR
This section documents the historical and projected water use as well as the maximum day demand.

California Water Code
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.

Chapter Focus
This chapter describes the City’s water service area. This description includes discussion of the City’s location, the boundaries of the water service area, existing and future land use types, and climate. This chapter also summarizes the historical and projected population as well as a review of the City’s demographics and socioeconomic conditions.

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2025 Urban Water Management Plan
(H) Saline water intrusion barriers, groundwater recharge, or conjunctive use, or any combination thereof.
(I) Agricultural.
(J) Distribution system water loss.
10631 (d)(2) The water use projections shall be in the same five-year increments described in subdivision (a).

4.2.1 Historical Water Use
The relationship between historic water use and population is illustrated in Figure 4-1, which shows that water consumption declined following the 2007–2010, 2012–2016, and then 2020- 2022 drought periods, despite continued population growth over the same timeframe.

Figure 4-1 Historic Water Use and Population

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2025 Urban Water Management Plan

4.2.2 Current Water Use
The City currently provides domestic water to residential, commercial, industrial, and institutional customers within the City limits. At the time of preparation of the 2025 UWMP, based on the most recent available data, the City supplied water to over 20,834 active service connections in 2025, with a corresponding 2025 volume of approximately 8,280 AF, as summarized in Table 4-1.

Submittal Table 4-1 Retail: 2025 Actual Total Uses for Potable and Non-Potable Water Water Code Section 10631(d)(1)
Use Type
2025 Actual Water Use
Level of Treatment When
Delivered (OPTIONAL)
Volume
(AF)
Single Family Potable 4,085
Multi-Family Potable 1,201
Commercial Potable 455
Industrial Potable 668
Institutional/Governmental Potable 215
Landscape Potable 862
Other (optional) Potable 75
Distribution System Water Loss Potable 719
Total 8,280
NOTES: Losses include apparent losses and real losses.

4.2.3 Projected Water Use
This section documents the projected water use data.

California Water Code
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.
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...

The city-wide projected potable water demands by water use type through the year 2050 are summarized in Table 4-2, and the demands include estimated future water savings from active conservation activities (Table 4-3). To calculate the total projected potable water demand through

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2025 Urban Water Management Plan
the UWMP planning horizon of 2050, the City’s 2020 urban water use target of 131 gallons per capita per day (gpcd) was applied to the projected population.

These projections also incorporate future water use reductions of up to five percent resulting from passive water savings, as described in Section 4.2.4. For planning purposes, the proportion of projected demand by use type is assumed to be consistent with current consumption trends, which reflects a majority of users in single-family and multi-family residential categories.

Submittal Table 4-2 Retail: Total Uses of Potable, and Non-Potable Water - Projected Water Code Section 10631(d)(1)
Use Type Additional
Description
Projected Water Use
Level of
Treatment
When
Delivered
(OPTIONAL)
2030 2035 2040 2045 2050
(AF) (AF) (AF) (AF) (AF)
Single Family Potable 5,245 5,513 5,794 6,089 6,400
Multi-Family Potable 1,542 1,621 1,704 1,790 1,882
Commercial Potable 584 613 645 678 712
Industrial Potable 857 901 947 995 1,046
Institutional/Governmental Potable 277 291 306 321 338
Landscape Potable 1,107 1,163 1,223 1,285 1,351
Other (optional) Hydrant
Meters Potable 96 101 106 111 117
Distribution System Water
Loss See Note Potable 923 970 1,020 1,072 1,126
Total 10,631 11,173 11,743 12,342 12,971
NOTES: Losses include apparent losses and real losses.

The City encourages system-wide water conservation in collaboration with its water wholesaler, CCWD. This collaboration includes ongoing customer outreach and multiple resources offered through the CCWD Water Conservation. The resources and programs implemented by the City and in coordination with CCWD are described in Chapter 9.

In addition to end use water conservation methods and programs, reductions in water use can be achieved from the implementation of state and local efficiency codes including the use of residential weather-based irrigation controllers and high efficiency landscape practices, all of which are expected to achieve additional water use reductions throughout the City’s water service area.

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Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) Are Future Water Savings Included in Projections? Yes
If "Yes” to above:

State the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.

4.2 Are Lower Income Residential Demands Included in Projections? Yes

4.2.4 Passive Water Savings
Passive water savings include water use reduction that results from codes, standards, ordinances, and other plans (Table 4-4). These various sources of water savings typically result from state or regional requirements or guidelines, which are then implemented by the City. Examples of these codes and ordinances are as follows:
• Model Water Efficient Landscape Ordinance (MWELO): In 2015, DWR was tasked with updating the MWELO to increase water efficiency standards for new and retrofitted landscapes. This includes encouragement in the use of more efficient irrigation systems, greywater usage, and onsite stormwater capture.
• California Energy Commission Title 20: This includes appliance standards for toilets, urinals, faucets, and showerheads. These standard impacts both new construction and replacement fixtures in existing homes.
• CALGreen Building Code: The code requires residential and non-residential water efficiency and conservation measures for new buildings and structures. • California's AB 1572 (2023): AB 1572 prohibits using potable water on nonfunctional turf (such as decorative grass not used for recreation) in phases, and between 2027 to 2031.

The ban starts with state/local government on January 1, 2027, moves to commercial/institutional in 2028, and then homeowners associations (HOAs) in January 1, 2029. Compliance self-certifications for large properties start on January 1, 2030.

Passive water savings are expected to continue to be a factor in new construction, however new regulations such as AB 1572 prohibitions, reducing turf in commercial and homeowners associations are expected to be noticeable.

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2025 Urban Water Management Plan
For planning purposes, it is assumed that these passive water savings will result in up to a five percent reduction in water use, and were incorporated in the demand projections shown in Table 4-2.

Submittal Table 4-4 Retail: Passive Water Savings Projections Water Code Section 10631 (d)(4)(A)
Description
(Codes, Standards, Ordinances, or Plans)
Passive savings
2030 2035 2040 2045 2050 (opt)
(AF) (AF) (AF) (AF) (AF)
Codes, Standards, Ordinances and Plans 560 588 618 650 683

4.2.5 Active Conservation Program Savings
While the demand projections included on Table 4-2 accounted for passive water savings, as discussed in the previous section, the City is taking a more conservative approach and excluding future active conservation savings, which are usually achieved through the programs and activities implemented by the City as part of its water conservation program. The City’s water conservation programs and demand management measures are discussed in detail in Chapter 9 – Demand Management Measures. Active savings that are part of previous conservation efforts and reflected in historical demands, are also reflected in the projections. Only additional active savings are excluded.

4.2.6 Water Use for Lower Income Households
California Water Code
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.
10631.1 (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.

SB 1087 (Florez, 2005) amended the UWMPA to require urban water suppliers to include singlefamily and multi-family residential units for lower-income households, as identified by the City,

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County, or both, within the service area of the provider. As part of the City’s 2035 General Plan, an updated Housing Element was released, providing the number of lower-income housing units allocated through 2023. According to the Housing Element, 49 percent of the Regional Housing Needs Allocations (RHNA) must be affordable to lower-income households. The projected residential water demands presented in Table 4-2 reflect this allocation for lower-income households.

4.2.7 Climate Change Considerations
California Water Code
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.
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.

Pittsburg’s water use varies by more than 50% seasonally. For example, in 2025 Fiscal Year, the minimum monthly water use was 521 AF February 2025, increasing to 968 AF in July 2024, suggesting that water demand in the City, in particular for landscape irrigation and industrial purposes, will increase as a result of more frequent, longer, and more extreme heat waves; increased air temperature; increased atmospheric carbon dioxide levels; changes in precipitation, winds, humidity, atmospheric aerosol and ozone levels; and population growth. Without additional conservation efforts, the effects of increasing temperature will increase these landscape irrigation, industrial cooling needs and challenge the City’s water supply system.

As water conservation becomes permanently incorporated through the use of high efficiency fixtures and conservation mindsets, this leaves less room for water use reductions during a significant drought event. This hardening of water conservation makes the City potentially more vulnerable to the effects of climate change.

4.3 DISTRIBUTIONS SYSTEM WATER LOSSES
California Water Code
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. 10631 (d)(3)(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. 10631 (d)(3)(C) In the plan due July 1, 2021, and in each update thereafter, data shall be included to show whether the urban retail water supplier met the distribution loss standards enacted by the board pursuant to Section 10608.34.

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4.3.1 Previous Five Years Distribution System Losses
As part of the 2025 UWMP update, urban water suppliers are required to quantify the previous five years’ distribution system water losses in a manner consistent with the American Water Works Association (AWWA) water system balance methodology. The City has completed the required water loss audit worksheet in accordance with the DWR guidelines. Table 4-5 documents the reported water loss information for 2020-2024.

Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
Public Water System ID #
Reported in Table 2-1 R
Reporting
Period
Submitted to DWR
Water Loss Audit
Program
CA0710008
2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes

4.3.2 Progress Toward Meeting the Water Loss Performance Standard Pursuant to Water Code Section 10631(d)(3)(C), Retail Suppliers are required to provide data demonstrating whether the Retail Supplier met its State Water Board Water Loss Performance Standard in 23 CCR Section 980 et seq. for each applicable PWS. Submittal Table 4-6 allows for reporting on progress toward meeting the Water Loss Performance Standard.

The Water Loss Performance Standard is not required to be met until 2028; however, California Water Code Section 10631(d)(3)(C) still requires including data in their 2025 UWMPs demonstrating whether the standard is achieved. Table 4-6 reflects the current real water loss per unit per day is 56.9, which exceeds the 2028 standard of 16.53. In contrast, the current apparent loss per unit per day is 5.5, same as the 2028 standard of 5.5. This comparison suggests that apparent loss is not a primary concern. However, the elevated real loss warrants further investigation, particularly for potential leaks within the storage system, transmission and distribution mains, and service lines up to and including the meter.

4.4 SUBMITTAL TABLES SUMMARY
This chapter included the following submittal table(s):
• Table 4-1: 2025 Actual Uses for Potable and Non-Potable Water • Table 4-2: Total Uses of Potable and Non-Potable Water-Projected • Table 4-3: Total Water Use (Potable and Non-Potable) Inclusion in Water Use Projections

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• Table 4-4: Passive Water Savings Projections
• Table 4-5: Water Loss Audit Reporting
• Table 4-6: Progress Towards 2028 Water Loss Standard

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Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
Volume of Total Real
Loss (from AWWA
Water Loss Audit)
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
(AF)
CA0710008 Yes 16.53
Gallons per
Service
Connection
per Day
(GPSCD)
20834 1327.88 56.9 5.5
Gallons per
Service
Connection per
Day (GPSCD)
20834 128.35 5.5
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
Public Water
System ID #
Reported in
Submittal Table 2-
1 R
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
Number of Units
(Connections or
Miles corresponding
with units selected)
State Water Board Standard
2028 Real Water Loss
Standard per Unit per
day
Units for Real
Water Loss
State Water Board Standard
2028 Apparent
Water Loss
Standard per Unit
per Day
Units for
Apparent
Water Loss
Number of
Connections

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5.0 CHAPTER 5 – WATER CONSERVATION REQUIREMENTS
This chapter includes the City’s per-capita water conservation target requirements (SB X7-7) as calculated in previous UWMPs and monitors compliance in accordance with the Water Code. As California built the Urban Water Use Objective (UWUO) framework on top of the conservation goals from SB X7-7, using it as a benchmark and requiring suppliers’ overall objectives to go beyond the older 20% by 2020 target to ensure ongoing water conservation efforts.

5.1 REPORTING REQUIREMENTS FOR RETAIL SUPPLIERS
California Water Code
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. 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.

5.1.1 2020 Target & Historical Per Capita Use
The need for additional supply sources or storage to accommodate future growth is typically evaluated using historical per capita water consumption, and which is expressed in gallons per capita per day (gpcd), and defines as follows:
• Gallons Per Capita Per Day (GPCD), as used in UWMP calculations, represents the total water use within a service area divided by the population. It measures daily per-person water use in gallons.

The future requirements of the supply source are then estimated by applying the per capita consumption rate, expressed in gallons per capita per day (gpcd), to the projected population.

Figure 5-1 presents the City's historical water use per capita in gpcd and the 2020 water use target.

Chapter Focus
The purpose of the SB X7-7 Baseline, 2020 Targets, and 2025 Reporting chapter in the City’s 2025 UWMP is to document the City’s progress toward achieving its urban water-use efficiency targets, in accordance with California Water Code Section 10608.40. This chapter provides the framework for meeting UWMP reporting requirements, with detailed calculation methods and considerations for establishing SB X7-7 baselines, targets, and compliance values.

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The City had an average gpcd of 162 from 2001 to 2007, while the average from 2008 to 2019 remained relatively flat at approximately 121 gpcd. Conservation efforts were successful in lowering the water consumption to a per capita water consumption rate of 111 gpcd in the year 2020, and 97 gpcd in the year 2025.

Figure 5-1 Historic Water Consumption Per Capita vs. 2020 Target

5.2 SUPPLIER MET 2020 TARGET IN 2025
Suppliers that met their 2020 Target in 2025 will submit Submittal Table 5-1 and include their “2020 Target” as well as their “2020 Actual GPCD” to verify that they met the SB X7-7 requirement. As directed in the 2025 UWMP guidebook, this information is obtained from the City’s 2020 UWMP and the calculations are thus not reproduced.

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May 2026 5-3 City of Pittsburg
2025 Urban Water Management Plan
Submittal Table 5-1 Retail: SB X7-7 2020 Target Progress Water Code Section 10608.40
Was Supplier
part of a
merger or
consolidation
since 2020?
Regional
Alliance
Target or
Individual
Target?
2020 Target Actual
2020 GPCD
Did
Supplier
Achieve
Targeted
Reduction
for 2020?
Only for suppliers that did
not meet the Target in 2020
See DWR NOTES below.

Actual 2025
GPCD
Did Supplier
meet the
2020 Target
in 2025?
No Individual
Target 131 111 Yes NA

5.3 SUBMITTAL TABLES SUMMARY
This chapter included the following submittal table(s):
• Table 5-1: SBX7-7 2020 Target Progress

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May 2026 6-1 City of Pittsburg
2025 Urban Water Management Plan
202City of Pittsburg 5

6.0 CHAPTER 6 – NORMAL-YEAR WATER SUPPLY
This chapter summarizes the City’s current and planned water supply sources and volumes, including characterization of the groundwater basins.

6.1 PURCHASED OR IMPORTED WATER
The City is within the service area of CCWD and purchases Central valley Project (CVP) water from the Sacramento–San Joaquin Delta through CCWD, its wholesale supplier. CCWD has a contract with the U.S. Bureau of Reclamation (USBR) for 195,000 AFY of CVP water. The current contract was renewed in 2005 for a 40-year term, extending from March 2005 through February 2045.

Between 85% and 95% of the City’s current water supply is received from CCWD pursuant to a contractual agreement that allows the City to receive a supply of water as is necessary to meet its needs (Figure 6-1). However, this supply of water is subject to rationing restrictions in the event of a water shortage or other extraordinary circumstances. As will be described in a later section, CCWD’s future water supply projections indicate adequate availability of surface water sources delivered through its contract with the USBR.

Chapter Focus
The purpose of this chapter is to describe and quantify the sources of existing and planned water available to the City during a normal year. This chapter includes a description of the groundwater basin underlying the City, as well as ongoing planning efforts for the potential use of recycled water within the City’s service area.

California Water Code
10631 (b) Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier as described in subdivision (a) [in five-year increments to 20 years or as far as data is available]1, providing supporting and related information, including all of the following:
(1) A detailed discussion of anticipated supply availability under a normal water year. (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.

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May 2026 6-2 City of Pittsburg
2025 Urban Water Management Plan
Source: Contra Costa Water District
Figure 6-1 Contra Costa Water District – Contra Costa Canal

6.2 GROUNDWATER
This section provides information of the groundwater basin, groundwater management, groundwater pumping and overdraft conditions and how these conditions will affect the water supply to the City.

California Water Code
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

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May 2026 6-3 City of Pittsburg
2025 Urban Water Management Plan
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.

The most recent version of California Water Plan Update was released in 2023, and it documents the Department of Water Resources dividing the state into ten separate hydrologic regions. Each hydrologic region is divided into distinct groundwater basins, each of which is typically divided further into smaller interconnected groundwater subbasins.

The following section summarizes the groundwater basin and subbasins underlying the City of Pittsburg which is within the San Francisco Bay Hydrologic Region.

6.2.1 Basin Description
California Water Code
10631 (b)(4) If groundwater is identified as an existing or planned source of water available to the supplier, the following information shall be included:
(B) A description of any groundwater basin or basins from which the urban water supplier pumps groundwater.

This section provides a brief discussion of the groundwater basin, basin boundary and groundwater quality.

6.2.1.1 Groundwater Basin
The City is located above the Pittsburg Plain Groundwater Basin (Groundwater Basin Number 2- 004) as identified in the California Department of Water Resources (DWR) Bulletin 118, as shown in Figure 6-2. The City currently extracts groundwater from this basin using two wells. The basin is bounded by Suisun Bay to the north, the Tracy Subbasin of the San Joaquin Valley Water Groundwater Basin to the east, and the Clayton Valley Groundwater Basin to the west.

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Pittsburg

SUISUN BAY
Antioch
Concord
Walnut Creek
4 680
680
680
4 12
Sources: Esri, USGS, NOAA
0 0.5 1 2
Miles
File Path: P:\xGIS\GIS_Projects\Pittsburg\Water\260210-2025_UWMP\PB_Fig6-1_GroundWaterBasins_021126.aprx Figure 6-2
Groundwater Basins
2025 Urban Water Management Plan
City of Pittsburg
GIS
Legend
Groundwater Basins

ARROYO DEL HAMBRE VALLEY

CLAYTON VALLEY

PITTSBURG PLAIN

SACRAMENTO VALLEY

SAN JOAQUIN VALLEY

SUISUN-FAIRFIELD VALLEY

YGNACIO VALLEY
Updated: February 11, 2026

PRELIMINARY

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May 2026 6-5 City of Pittsburg
2025 Urban Water Management Plan

6.2.2 Groundwater Management
This section documents relevant plans addressing groundwater supply and quality.

6.2.2.1 Groundwater Management Plan
The City prepared the Pittsburg Plain Groundwater Management Plan (GWMP) in October 2012.

The purpose of the GWMP is to manage and protect groundwater resources within and underlying the City. The primary objectives of the GWMP include the following:
• Provide a long-term strategy to maintain the quality, reliability, and sustainability of the Pittsburg Plain groundwater resources.
• Manage groundwater conjunctively with available surface water resources • Support Basin Management Objectives that promote sustainability and optimal use of groundwater supplies.

6.2.2.2 Integrated Regional Water Management Plan
The East Contra Costa County (ECCC) Integrated Regional Water Management (IRWM) planning effort is a formal collaborative process convened to support all aspects of regional water management. This includes integrated planning for water supply, water quality, watershed and habitat protection, and flood and stormwater management. The ECCC IRWM members have a long history of cooperation across political and jurisdictional boundaries that spans almost two decades.

In the 2019 IRWM Plan Update, the ECCC region further refined its integrated regional water management planning framework to comply with the 2016 IRWM Program Guidelines established by the California Department of Water Resources. The update builds on previous plan revisions and strengthens the region’s collaborative approach to implementing projects that provide multiple benefits, improve regional water resource management, and address current and emerging water California Water Code
10631 (b)(4) If groundwater is identified as an existing or planned source of water available to the supplier, the following information shall be included:
(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.
(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.

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May 2026 6-6 City of Pittsburg
2025 Urban Water Management Plan
supply, water quality, and environmental challenges. The updated plan continues to serve as a living framework that the region can rely on to meet both present and future water management needs.

The objective of the Integrated Regional Water Management Plan (IRWM) is to develop a comprehensive and flexible water supply plan for the County through the year 2040. The IRWM incorporates community input and is capable of responding to changing water supply and demand conditions.

The IRWM Preferred Strategy aims to maximize the Districts flexibility to meet actual water demands, and where they match water projections. It relies on practices, such as water banking, recycled water, demand management, and water transfers. It further relies on “core elements” designed to validate baseline planning assumptions, monitor or evaluate resource options, and help meet planning objectives.

6.2.2.3 California Statewide Groundwater Elevation Monitoring Program The City of Pittsburg participates in DWR’s California Statewide Groundwater Elevation Monitoring (CASGEM) Program as designated monitoring entities for the Pittsburg Plain Basin and Subbasin areas.

6.2.2.4 Salt and Nutrient Management Program
In 2012, the City completed a Salt and Nutrient Management Program Summary to provide a preliminary evaluation of groundwater quality and salt and nutrient loading potential to assist in future groundwater planning and development effort.

6.2.3 Overdraft Conditions
The Pittsburg Plain Groundwater Basin is not an adjudicated groundwater basin. DWR well data in the Pittsburg Plain Groundwater Basin indicate that the groundwater levels have remained fairly stable of the period of record. According to DWR, and based on present groundwater conditions, it is not expected that overdraft conditions will occur in the groundwater basin. As such, the Pittsburg Plain Groundwater Basin is not listed as a critically overdrafted groundwater basin by DWR.

6.2.4 Past Five Years Groundwater Pumping
The City has two active groundwater wells, Dover and Bodega, with capacities of approximately 1,300 gpm and 1,200 gpm, respectively. The volume of groundwater pumped by the City over the past five years is summarized in Table 6-1.

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May 2026 6-7 City of Pittsburg
2025 Urban Water Management Plan
Submittal Table 6-1 Retail: Groundwater Volume Pumped
Water Code Section 10631(4) and 10631(4)(c)
Groundwater
Type
Water
Type
(OPTIONAL)
Location or Basin
Name
2021 2022 2023 2024 2025
(AF) (AF) (AF) (AF) (AF)
Alluvial Basin Potable Pittsburg - Contra
Costa County 1,269 1,233 1,130 1,019 734
Total 1,269 1,233 1,130 1,019 734

6.3 SURFACE WATER
The City’s primary source of water is surface water supplied by CCWD via the Contra Costa Canal. Water purchased through CCWD is Central Valley Project (CVP) water pumped from the Sacramento-San Joaquin Delta.

6.4 STORMWATER
At the time of preparation of the 2025 UWMP, the City does not divert stormwater for beneficial uses in its domestic water supply portfolio.

6.5 WASTEWATER AND RECYCLED WATER
This section discusses the use of recycled water and the characteristics of the wastewater collected by the Delta Diablo for treatment.

California Water Code
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

6.5.1 Recycled Water Coordination
Non-potable water use is a continued component of the City’s long-term sustainable water supply strategy. While the City does not directly provide non-potable water supplies, continued coordination with CCWD and Delta Diablo is a key component to ensure non-potable water can be used within the City’s service for appropriate designated uses.

Delta Diablo (formerly Delta Diablo Sanitation District) provides wastewater collection and treatment for the Cities of Pittsburg and Antioch as well as the unincorporated community of Bay

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May 2026 6-8 City of Pittsburg
2025 Urban Water Management Plan
Point. The WWTP has an average dry weather flow permitted capacity of 19.5 MGD and a recycled water facility (RWF) has a permitted capacity of 12.8 MGD. As noted previously, Delta Diablo is the owner and operator of the recycled water distribution system, which includes deliveries within the City’s service area. The City’s potable water system serves as the backup water supply should the recycled water deliveries become unavailable. However, CCWD serves as the backup water supply for the major industrial users of recycled water, which use a vast majority of the Delta Diablo recycled water supplies.

6.5.2 Wastewater Collection, Treatment, and Disposal
This section describes wastewater collection and disposal.

6.5.2.1 Wastewater Collected Within Service Area
All wastewater flows collected within the City’s service area are conveyed to the Delta Diablo WWTP for treatment. The WWTP has a Delta outfall that is used for the disposal of wastewater that is not recycled. The WWTP provides secondary treatment using a series of primary treatment, activated sludge trickling filters, and secondary clarification. The Recycled Water Facility (RWF) provides additional treatment to tertiary levels using a series of flocculating clarification, filtration, and disinfecting.

Due to the locations of Delta Diablo’s flow meters, it is not possible to report the City’s specific wastewater volume conveyed to the WWTP. Based on reports prepared by CCWD, Delta Diablo collected a total wastewater volume of approximately 14,755 AF (Table 6-2).

Submittal Table 6-2 Retail: Wastewater Collected Within Service Area in 2025 Water Code Section 10633(a)
Wastewater Collection Recipient of Collected Wastewater Name of Wastewater
Collection Agency
Wastewater
Volume
Metered or
Estimated?
Volume of
Wastewater
Collected
from UWMP
Service Area
2025(AF)
Name of Wastewater
Treatment Plant (WWTP)
and Place ID Number
Is WWTP
Located
Within
UWMP Area?
Delta Diablo
(Sanitation District) Metered 14,755 Delta Diablo WWTP, Place ID 219552 No Total Wastewater Received from
UWMP Service Area in 2025: 14,755

6.5.2.2 Wastewater Treatment and Discharge Within Service Area Wastewater that is not treated in Delta Diablo’s Recycled Water Facility is discharged into the Delta. Delta Diablo’s Waste Discharge Requirements (Order No. R2-2014-0030, NPDES Permit No. 0038547) allow treated effluent to be discharged into New York Slough through a deep water

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May 2026 6-9 City of Pittsburg
2025 Urban Water Management Plan
outfall, approximately 400 feet from shore. As the wastewater treatment plant is located outside the City of Pittsburg’s service area, and treats sewer flows from several agencies (including the City of Pittsburg) the 2025 volumes of wastewater that were treated and discharged are not included in Table 6-3. Delta Diablo does not have wastewater flows broken down by city for its service area; therefore, it is not possible to report these same volumes for Pittsburg alone.

Recycled water use for the City of Pittsburg alone in 2025 was 108 AFY (Table 6-4).

Submittal Table 6-3 Retail: Wastewater Treatment and Outcomes Within Service Area in 2025 Water Code Section 10633(a)

6.5.3 Recycled Water System
Approximately 50% of the wastewater conveyed to the Delta Diablo WWTP received tertiary treatment. A majority of this recycled water volume is for cooling water at the Delta and Los Medanos Energy Centers, with the remaining volumes used for irrigation purposes at two golf courses and 12 city parks. This remaining volume is delivered to 18 connections throughout the City’s service area for schools, parks, and roadway medians. While the Industrial energy centers are located within the City’s UWMP service area they receive back-up water supply from CCWD and the City will not be required to support their water supply. Therefore, they are itemized separately from the irrigation water use in the 2025 UWMP recycled water reporting and projections and shown for informational purposes only. It should be noted that Delta Diablo is the owner and operator of the recycled water distribution system, with deliveries occurring within the City’s UWMP service area.

6.5.4 Current, Potential, and Projected Recycled Water Uses This section documents the description of the quantity of current, potential and projected recycled water uses within their service area. In addition to California Water Code 10633 (b), (d) and (e), California Code of Regulations below provides the definition of the term direct beneficial use.

California Water Code
10633 (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.

Volume Volume Volume Volume Volume
(AF) (AF) (AF) (AF) (AF) (AF) (AF)
Delta Diablo WWTP,
Place ID 219552
Yes 14,755 14,755
14,755 14,755 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)
Wastewater
Treatment Plant
Name and Place ID
Number
Treatment
Level
Treatment
Level
Treatment
Level
Treatment
Level
Treatment
Level
Name of other
entity
Total 2025
Volume of Water
Treated
Total
2025 Volume
of Wastewater
Received from
UWMP
Service Area
(As Reported
in Submittal
Table 6-2 R )
Water Recycled Within
UWMP Service Area
(enter data as applicable)
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)

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May 2026 6-10 City of Pittsburg
2025 Urban Water Management Plan
10633 (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. 10633 (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.

6.5.4.1 Current and Planned Uses of Recycled Water
The City continues to support developing irrigation and industrial recycled water uses where there is available supply and the use is economically feasible. Delta Diablo began recycled water deliveries within the City’s service area in the 1990s and the City has continued to add service connections since that time. The current and projected direct beneficial uses of recycled water are summarized on Table 6-4 and shown on Figure 6-3. This was based on 108 AF of actual irrigation use in 2025 (Table 6-5) and 300 AF of future recycled water use as listed on Table 6-6.

Submittal Table 6-4 Retail: Recycled Water Direct Beneficial Uses Within Service Area Water Code Section 10633 (c)(e)
Name(s) of Facility/ies Producing (Treating) the
Recycled Water (OPTIONAL) : Delta Diablo (Sanitation District) Name of Supplier Operating the Recycled Water
Distribution System (OPTIONAL) : Delta Diablo (Sanitation District) Supplemental Water Added in 2025 (volume)
Include units (OPTIONAL) :

Source of 2025 Supplemental Water (OPTIONAL) :

Use Type
Water
Type
(after
treatment
if treated)
(OPTIONAL)
Additional
Information
2025 2030 2035 2040 2045
2050
(opt)
Potential Recycled
Water Use
(AF) (AF) (AF) (AF) (AF) (AF) Volume
Narrative
page
number
(OPTIONAL)
Landscape
irrigation
(exc golf
courses)
NonPotable 108 808 808 808 808 808
Total 108 808 808 808 808 808 0 0

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SUISUN BAY
8th St & Herb White
Linear Park
8th St & West St
Linear Park
Marina Walk Park John Buckley Square Park
8th St & Harbor St
Linear Park
Santa Fe Ave & Pine St
Linear Park
Central Park Baseball Field
Central Park
City Park Baseball Fields
Davi Baseball Fields
Civic Community Center
City Hall Police Station
City Hall
John Henry Johnson Park
Legend
Reclaimed Water Users
Reclaimed Water Deliveries
Parks
General Plan Area
Other Features
Pittsburg City Limits
Street Centerlines
Water Bodies
Figure 6-3
Reclaimed Water Users
2025 Urban Water Management Plan
City of Pittsburg
File Path: P:\xGIS\GIS_Projects\Pittsburg\Water\260210-2025_UWMP\PB_Fig6-2_RWUsers_021126.aprx Updated: February 11, 2026
0 0.25 0.5 1
Mile
GIS

PRELIMINARY

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May 2026 6-12 City of Pittsburg
2025 Urban Water Management Plan

6.5.4.2 Planned Versus Actual Use of Recycled Water
In the 2025 UWMP, the City projected the future recycled water use based on potential recycled water irrigation conversion projects throughout the City as well as ongoing industrial reuse by the two previously discussed energy centers. Table 6-5 summarizes the projection for 2025 as documented in the 2020 UWMP as well as the actual 2025 recycled water use.

Submittal Table 6-5 Retail: 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual Water Code Section 10633 (e)
Use Type
2020 Projection
for 2025
2025 Actual
Use
(AF) (AF)
Landscape irrigation (exc golf courses) 311 108
Total 311 108
Notes: Actual Recycled Water Use is based on 2024 production and distribution, with minimal changes assumed for 2025.

6.5.4.3 Actions to Encourage and Optimize Future Recycled Water Use The City continues to encourage recycled water use throughout its service area. Some mechanisms currently employed to encourage recycled water use include:
• Secure local, state, and federal agencies to offset capital costs • Coordinate with Delta Diablo and CCWD
• Promote regional and local water recycling projects
• Urge regulatory agencies to streamline regulatory requirements • Support research that addresses public concern on recycled water use.

The City currently does not use financial incentives to encourage recycled water use, but as additional recycled water projects are identified there may be an additional action to be considered. The City will continue to evaluate the potential for grant funding of recycled water projects and seek opportunities to implement portions of larger projects as they become economically feasible.

Additionally, the City will continue to work collaboratively with CCWD and Delta Diablo in its service area to encourage recycled water use in future development projects. Within the East Contra Costa County IRWM group CCWD provides a leadership role in coordinating updates to the IRWMP, as well as grant applications and administration. Historically, Pittsburg has administered several grants that included funding towards recycled water projects and the City will continue to coordinate with the other IWRM member agencies in identifying and pursuing grant funding opportunities for recycled water projects.

Preliminary actions are identified on the following page on Table 6-6 as part of the 2025 UWMP, which should be revisited as ongoing recycled water planning efforts continue to take place.

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May 2026 6-13 City of Pittsburg
2025 Urban Water Management Plan
Submittal Table 6-6 Retail: Methods to Encourage Future Recycled Water Use Water Code Section 10633 (f)
Name of Action Description
Planned
Implementation
Year
Expected Increase
in Recycled Water
Use * (AF)
Expanded
Partnership with
Delta Diablo
Expanded delivery of recycled
water for industrial and irrigation
uses in Pittsburg and Antioch’s
service areas
2030 700
Total 700
As identified in the CCWD 2025 Urban Water Management Plan Draft (June 2026), the estimated increase reflects projected recycled water demand across the combined Delta Diablo service area, including both Pittsburg and Antioch, and is not specific to Pittsburg alone.

6.6 DESALINATED WATER OPPORTUNITIES
California Water Code
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.

Desalinated water is not currently used by the City as a source of supply. Potential opportunities for desalination supply have been explored in the past on a regional level though the East County Water Management Association (ECWMA), of which the City is a participant. However, the cost for desalinated water as a source of supply has not been considered cost-effective compared to other existing available sources. The ECWMA will continue to review the advancements in desalinated water technology in the event it becomes a cost-effective supply alternative in the future.

6.7 WATER EXCHANGES AND TRANSFERS
California Water Code
10631 (c) Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis.

The City does not currently use exchanges or transfers of water as a source of supply, nor are there future plans to use exchanges or transfers.

6.8 FUTURE WATER PROJECTS
California Water Code

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May 2026 6-14 City of Pittsburg
2025 Urban Water Management Plan
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.

They City has no plans for the immediate future to implement water supply projects within its service area. However, CCWD has identified several future water projects that would be used to meet the needs of its wholesale customers, which includes the City. These future projects include Industrial Recycled Water Projects, Near- and Long-Term Conservation Program and Long-term water transfer or preferred alternative. The City’s ongoing and future water programs are summarized on Table 6-7.

6.9 SUMMARY OF EXISTING AND PLANNED SOURCES OF WATER
The City’s existing and planned water supply sources include local groundwater, recycled water, and purchased surface water from CCWD. The local groundwater sources are extracted to the City’s Water Treatment Plant where these are treated in conjunction with the surface water supplies purchased from CCWD. These treated supplies are then conveyed to the City’s customers through the potable water distribution system. The City’s 2025 water supplies are summarized on Table 6-8.

The City’s projected water supplies are summarized on Table 6-9. The City’s groundwater supply is expected to remain the same under normal water year conditions, which is the average volume of historical pumped groundwater from 1993 to 2025. Projected available recycled water supplies are based on the City’s projected recycled water demand, which the existing Delta Diablo RWF can meet. Per purchase water agreement with Contra Costa Water District, CCWD can meet 100% of the City’s projected potable water demand (outlined in Table 4-2) from surface water supply under normal water year conditions.

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May 2026 6-15 City of Pittsburg
2025 Urban Water Management Plan
Submittal Table 6-7 Retail: Expected Future Water Supply Projects or Programs Water Code Section 10631 (f)
(AF)
Long-Term Transfer Yes CCWD
CCWD would enter into a long-term
water transfer agreement for a fixed
amount of water supplies.
2030
Single-Dry and
Multi-Dry Year 6,000
Spot Market Purchase Yes
CCWD
CCWD would determine its water
supply requirements each year and
decide whether to purchase additional
2030 Single-Dry Year 6,000
Long-term Agricultural
Conjuctive Use
Yes
CCWD
CCWD would partner with an
agricultural partner or irrigation district
north of the Delta which has both pre1914 surface water supplies and access to groundwater supplies. In dry years,
the agricultural district would shift its
water usage to local groundwater
supplies and transfer its surface water
allocation to CCWD.
2030 Single-Dry Year 6,000
Long-term Agricultural
Fallowing Yes
CCWD
CCWD would partner with an
agricultural partner, such as a large
agricultural water use or irrigation
district, to exchange supplies in dry
years either by fallowing land or
shifting crops to conserve water for
other uses.
2030
Single-Dry and
Multi-Dry Year 6,000
CCWD Active NearTerm Conservation
Program
Yes
CCWD
Ongoing investments in active
conservation programs.

Ongoing Average Year 3,000
CCWD Active LongTerm Conservation
Program
Yes
CCWD
Ongoing investments in active
conservation programs.

Ongoing Average Year 8,800
Long-Term Water
Transfer or Other
preferred alternative
Yes
CCWD
Project to meet multiple dry-year
shortfall projected to begin in 2045. 2040-2045 Multi-Dry Year 2,200 Vista Del Mar -
Inclusion into CCWD
CVP Service Area
Yes
CVP
New federal supply for planned
development. Ongoing Average Year 800
Planned for Use
in Year Type
Planned
Implementation
Year
Joint Project with other
suppliers? Expected
Increase in
Water Supply
to Supplier
(This may be a
range)
Name of Future
Projects or Programs Drop Down
List
(yes/no)
If Yes, Supplier Name
Additional Description
(as needed)
Water Type
(after treatment
if treated)
(OPTIONAL)

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May 2026 6-16 City of Pittsburg
2025 Urban Water Management Plan
Submittal Table 6-8 Retail: Water Supplies — 2025 Actual Water Code Section 10631 (b)
Water Supply Additional Description
(as needed)
2025
Water Type
(after
treatment if
treated)
(OPTIONAL)
Actual
Volume
Total
Entitlement
(OPTIONAL)
See "DWR Notes"
below
(AF) (AF)
Purchased or Imported
Water Purchased from CCWD Potable 8,280
Groundwater (not
desalinated)
Extracted from Pittsburg
Plain Groundwater Basin Potable 1,077
Recycled Water Produced by Delta Diablo
for the City of Pittsburg Non-Potable 108
Subtotal Potable 9,357 0
Subtotal Non-Potable 108 0
Total 9,465 0
Submittal Table 6-9 Retail: Water Supplies — Projected
Water Code Section 10631 (b)
Water Supply Source
Water Type (after
treatment if treated) Projected Water Supply
(OPTIONAL) 2030 2035 2040 2045 2050 (opt)
(AF) (AF) (AF) (AF) (AF)
Purchased or Imported
Water Potable 10,631 11,173 11,743 12,342 12,971
Groundwater (not
desalinated) Potable 1,077 1,077 1,077 1,077 1,077
Recycled Water Non-potable 808 808 808 808 808
Subtotal Potable 11,708 12,250 12,820 13,419 14,049
Subtotal Non-Potable 808 808 808 808 808
Total 12,515 13,058 13,628 14,227 14,856

6.10 SUBMITTAL TABLES SUMMARY
This section includes the following submittal tables:
• Table 6-1: Groundwater Volume Pumped
• Table 6-2: Wastewater Collected Within Service Area in 2025 • Table 6-3: Wastewater Treatment and Outcomes Within UWMP Service Area in 2025

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• Table 6-4: Recycled Water Direct Beneficial Uses Within Service Area • Table 6-5: 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual • Table 6-6: Methods to Encourage Future Recycled Water Use • Table 6-7: Expected Future Water Supply Projects or Programs • Table 6-8: Water Supplies- 2025 Actual
• Table 6-9: Water Supplies-Projected

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202City of Pittsburg 5

7.0 CHAPTER 7 – WATER SERVICE RELIABILITY ASSESSMENT
This chapter assesses the reliability of the City’s water supply under normal conditions, singleyear dry conditions, and consecutive five-year dry conditions. The assessment includes a comparison of water use versus expected water supply through 2050, and includes the Drought Risk Assessment.

7.1 CONSTRAINTS ON WATER SOURCES CONSIDERATIONS
California Water Code
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. 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.

This chapter discusses the reliability of the City’s water supplies with respect to water quality and service reliability. Surface water, groundwater and recycled water quality and service reliability are each discussed in the following sections. While there are quality challenges associated with each source, the City, CCWD, and Delta Diablo are taking steps to address these challenges and the City does not anticipate decreases in water supplies over the UWMP planning horizon due to Chapter Focus
This chapter focuses on integrating the City’s water supply portfolio with its water use characterization. This integration brings together the UWMP elements into a succinct synopsis that depicts the City’s water service reliability. The reliability assessments highlight the incongruencies, if any, between the City’s water supplies and customer’s water demands, and influence the development of the City’s DRA described in this chapter and the WSCP described in a later chapter.

The DRA is a specific planning action that assumes the City is experiencing a drought over the next five years and addresses the City’s reliability in the context of presumed drought conditions.

Together, the WSRA, DRA, and WSCP allow the City to have a comprehensive picture of its short-term and long-term water service reliability and to identify the tools to address any perceived or actual shortage conditions.

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water quality concerns. The following sections reflect a summary of available planning documents, including CCWD 2020 UWMP and the ECCC IWRMP update.

7.1.1 Surface Water
The City’s primary wholesale water supplier, CCWD, is almost entirely dependent on the Delta for its water supply. The quality of water in the Delta continues to deteriorate despite efforts to improve it.

7.1.1.1 Water Quality Factor
Delta water quality problems are being compounded by increased water use and greater wastewater, stormwater, and agricultural discharges from statewide development and growth.

Climate change is projected to have impacts on CCWD’s water supplies and further influences Pittsburg’s surface water reliability. Changes in precipitation and temperatures could affect the availability of fresh surface water. Additionally, sea-level rise could result in increases in Delta salinity, which could limit the quantity and duration of water with quality suitable for M&I purposes.

A number of projects and programs are being developed, or are in place, to address Delta water quality degradation at the statewide level and through local and regional projects. To ensure that CCWD can meet the increasingly more stringent water quality standards and provide high quality water for its customers, including the City of Pittsburg, CCWD had initiated or is participating in a number of water quality improvement projects as summarized below. • EBMUD-CCWD Untreated Water Intertie: This intertie enables CCWD to divert up to 3,200 AFY of its CVP supply at the Freeport diversion facility. Additionally, the intertie provides for the sharing of water supplies between the agencies during emergency conditions or to support planned maintenance.
• Advanced Treatment Demonstration Project: In 2004, CCWD formed a regional partnership with local water agencies to research a project on advanced water treatment processes which examined a full-scale application of new and existing disinfectants and advanced filtration to produce safer drinking water. A second phase of the Advanced Treatment Study was initiated to improve understanding of Delta source water quality with respect to levels of various contaminants including endocrine disrupting compounds and pharmaceuticals, and to quantitatively assess removal effectiveness of existing and advanced treatment processes (membrane filtration and chemical addition). The results of the study were documented in a report in March 2011.
• Middle River Intake (Alternative Intake Project): In 2010, CCWD completed the Middle River Intake to move some of its pumping to a new intake in the Delta to enable CCWD to divert water of higher quality during dry periods, including droughts. The intake provides CCWD with the flexibility to divert higher quality water from the Delta without increasing the amount of water pumped.

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• Phase 1 Los Vaqueros Reservoir Expansion: The District completed an expansion in 2012 increasing the capacity of the reservoir from 100,000 AF to 160,000 AF which improves water quality and water supply reliability for the District’s customers while providing a net environmental benefit to the Delta.
• Canal Replacement Project: The CCWD Canal Replacement Project, led by the Contra Costa Water District, is focused on replacing the aging 26-mile Main Canal with a modern closed-pipeline system that will improve water quality, reduce operational and maintenance needs, and strengthen seismic reliability while continuing to deliver about 99% of the district’s water supply from Rock Slough to Clyde. The Main Canal replacement is currently in the preliminary design phase for the section from Randall Bold through Pittsburg, with final design anticipated to begin around 2028.

7.1.1.2 Legal Factors
The water supply reliability goal adopted by CCWD’s Board of Directors is to meet 100% of the City’s demand in normal years and at least 85% of demand during water shortage conditions. The remaining demands during drought conditions would be met by a combination of short-term water purchases, groundwater supply augmentation, and a voluntary, mandatory short-term conservation program.

The projected water supplies from CCWD are not anticipated to incur supply deficits in normal years due to CCWD’s long-term conservation program, existing CVP contract supply, and longterm water transfer agreement with East Contra Costa Irrigation District (ECCID). CCWD entered into an agreement with the ECCID in 2000 to purchase surplus irrigation water from ECCID’s service area. CCWD’s currently available and planned supplies are sufficient to meet their reliability goals and estimated water demands during normal, single dry, and the first two years of a multi-year drought. In later years, several types of drought conditions may result in supply shortfalls. The maximum amount of short-term conservation expected to be necessary by CCWD is 15% of supply. If current drought conditions continue and statewide conservation measures remain in effect, CCWD anticipates that it could meet up to 75% of the City’s demands over the next three years.

7.1.2 Groundwater
The following sections discuss the reliability and constraints for the City’s groundwater supply sources.

7.1.2.1 Legal Factors
The City’s secondary source of supply is groundwater extracted from the Pittsburg Plain subbasin of the Pittsburg Plain Groundwater Basin. This groundwater basin is not an adjudicated basin and no legal factors are expected to limit the availability of supply.

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7.1.2.2 Environmental Factors
Environmental concerns can arise during the water planning process when a project’s impact on the ecosystem is taken into consideration. These concerns can subsequently cause a lack of supply due to the enforcement of environmental legislation. The City’s groundwater sources are not expected to be limited by any environmental factors.

7.1.2.3 Water Quality Factors
Water quality factors that could affect the availability of supply include contamination from biological and chemical constituents. Groundwater from these wells contains elevated concentrations of manganese, iron, and total dissolved solids (TDS). At the Dover Well, TDS concentrations have remained relatively stable at approximately 1,500 mg/L since first measured in 2016. Over the same period, chloride concentrations have doubled, while hardness has increased more moderately. Manganese and iron concentrations, last measured in 2023, exceeded their respective Secondary Maximum Contaminant Levels (SMCLs).

At the Bodega Well, TDS concentrations nearly doubled from 620 mg/L in 2007 to 1,200 mg/L in 2023. Chloride concentrations and water hardness also increased significantly over this period.

However, the triennial sample collected in 2025 showed a notable decrease in constituent concentrations, including a TDS level of 898 mg/L. Manganese and iron concentrations generally exceeded their respective SMCLs, with two exceptions.

The City conducts regular monitoring of water pumped from these wells in compliance with California Code of Regulations, Title 22, to ensure that use of this water source remains consistent with applicable State water quality standards.

7.1.2.4 Climatic Factors
The City’s groundwater supply has proven to be very consistent through variable climatic conditions. There has been no change in groundwater levels reported by DWR in this area as a result of the City’s use of the groundwater basin. The City has implemented groundwater monitoring to evaluate groundwater level trends over time to ensure that overdraft conditions (potentially resulting in seawater intrusion) do not occur.

7.1.3 Recycled Water
The following sections discuss the possible constraints on the City’s recycled water supplies, as provided by Delta Diablo.

7.1.3.1 Legal Factors
Recycled water from Delta Diablo has been a highly reliable and essentially a “drought-proof” supply. Production capacity at the recycled water facility (RWF) is affected by the facility’s permitted capacity of 12.8 MGD, the use patterns of recycled water customers, Delta Diablo’s

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wastewater treatment plant influent diurnal flow pattern, influent average dry weather flow, and storage/equalization capacity at the RWF. Delta Diablo continues to assess these factors through various measures to ensure the continued reliability of the supply and increase the potential for future recycled water use.

7.1.3.2 Water Quality Factors
The City’s recycled water supply comes from Delta Diablo’s RWF. The RWF ensures a consistent water quality standard is met for the City’s recycled water supply through compliance with Title 22 standards.

7.2 WATER SERVICE RELIABILITY ASSESSMENT
California Water Code
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.

7.2.1 WSRA Year-Type Characterization
This section outlines the annual water supply year-types, and the data sources used to evaluate supply.

Types of Years
This section discusses the types of years
considered in the evaluation of water supply
reliability, summarized in Table 7-1 on the
following page. The conditions are as follows:
• Normal Year – The normal year, as it
pertains to supply, is based on an
averaged range of hydrologic years
representing the historical median
runoff (1922-2025).
• Single Dry Year – The single dry year,
as it pertains to water supply, is defined
as the year that represents the lowest historical water supply availability (1976). • Five-Consecutive-Year Drought– Multiple dry years can significantly impact the water supply system by reducing local and statewide reservoir levels and lowering groundwater WSCP
Shortage
Level
Normal Year
Single Dry
Year
FiveConsecutiveYear Drought

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levels. Available supply under these conditions is based on the minimum historical yields calculated as a five-year running average. The five-consecutive-year drought, as it pertains to water supply, is defined as the period of the driest five-year historical water supply availability (1929-1933).

To determine the supply available for different sources in each year type, the following key assumptions were made:
• Surface Water – The City purchases surface water supply from CCWD. From historical use in a normal year, CCWD could meet 100% of the City’s potable water demand; at least 85% of potable water demand under drought conditions. Table 7-1 summarizes the water supply availability for the City’s surface water supply, as provided by CCWD, under the different water years.
• Groundwater – The City’s groundwater supply has proven to be very consistent through variable climatic conditions. The City assumes groundwater supply is the same as historical average pumped groundwater, which is equal to 1,077 AFY (Table 6-9). • Recycled Water – Recycled water is considered to be drought-proof water supply source.

For the remainder of this chapter, recycled water supply is assumed to stay 100% available during drought conditions (both single and multiple dry years).

Submittal Table 7-1 Retail: Basis of Water Year Data (Reliability Assessment) Year Type Base
Year1
Volume
Available
Percent of Average
Supply
(AF) (%)
Average Year 1922-2025 100%
Single-Dry Year 1976 80%
Consecutive Dry Years 1st Year 1929 80%
Consecutive Dry Years 2nd Year 1930 75%
Consecutive Dry Years 3rd Year 1931 70%
Consecutive Dry Years 4th Year 1932 65%
Consecutive Dry Years 5th Year 1933 60%
NOTES: Percentages are based on CCWD data and align with values used by another agency served by CCWD.

The City experienced multiple-year drought conditions in 1967-1977, 1987-1992, 2007-2009 and again in 2013 - 2015. Water conservation strategies implemented by the City in partnership with CCWD, during the latest set of multi-year drought conditions, resulted in a reduction in per capita water usage.

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Based on experiences during the previous drought periods, the City recognizes that it is better to enter into a water shortage alert early, at a minimal level, to establish necessary rationing programs and policies, to gain public support and participation, and to reduce the likelihood of more severe shortage levels later. As the community continues to become more water efficient, it may become more difficult for customers to reduce their water use during water shortages (this is called “demand hardening”). Staff does not believe that City customers are approaching demand hardening yet, because there are still potential water efficiency improvements in residential plumbing fixtures, appliances, and landscapes, and in the commercial, industrial, and institutional sectors that have yet to be implemented.

Sources for Water Data
To establish a basis of normal, single dry, and multiple dry hydrologic water years, historical rainfall data available from DWR was analyzed, as it relates to the City.

7.2.2 WSRA Supply and Demand Comparison
During extended drought periods, city-wide water use patterns are expected to change. Outdoor water use may initially increase as irrigation compensates for reduced rainfall; however, these potential increases can be partially mitigated through enhanced water conservation measures.

In accordance with California Water Code Section 10635(a), urban water suppliers must evaluate the reliability of their water service by comparing available water supplies with projected water demands over a 20-year planning horizon in five-year increments. This assessment considers water supply availability under three hydrologic conditions: a normal water year, a single dry water year, and a drought lasting five consecutive dry years.

The water supply available to the City under different hydrologic conditions is summarized in Table 7-1.

The City’s water supply assessment considered the following sources of supply, which were described in detail in previous sections:
• Surface Water: The City receives surface water deliveries from CCWD in the form of diversions from the Contra Costa Canal. Historically, CCWD has been capable of meeting 100% of the City’s supply needs. CCWD’s 2020 UWMP indicates this could reach as low as 85% during the final year of a five-year drought.
• Groundwater: The City currently operates two groundwater wells, which extract and deliver groundwater to be blended and treated at the WTP. The available supply for these wells is assumed as equal to the historical average pumping. • Recycled Water: It is assumed the Delta Diablo recycled water supply will be an uninterruptable water source and the water supply and demand assessment assumes no reduction in supply availability.

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7.2.2.1 Supply and Demand Comparisons – Normal Year
Under normal-year conditions, the estimated groundwater recharge from the subbasins is assumed to meet the City’s projected water demand over the planning horizon. Table 7-2 shows the normal-year supply and use comparison, documenting total supply and demand under normalyear conditions and establishing a baseline for water supply reliability.

Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
2030 2035 2040 2045 2050
(AF) (AF) (AF) (AF) (AF)
Supply totals 12,515 13,058 13,628 14,227 14,856
Use totals 10,631 11,173 11,743 12,342 12,971
Surplus/(shortfall) 1,885 1,885 1,885 1,885 1,885
Recommended WSCP Actions
Water Shortage Level Level 0 Level 0 Level 0 Level 0 Level 0 WSCP - supply augmentation benefit 0 0 0 0 0
WSCP - use reduction savings benefit 0 0 0 0 0
Revised Surplus/(shortfall) 1,885 1,885 1,885 1,885 1,885

7.2.2.2 Supply and Demand Comparison – Single Dry Year
During a single dry year, groundwater recharge and overall water supply are expected to decrease due to reduced precipitation. The available supply is estimated by applying a single dryyear percentage of normal-year recharge for the subbasins. Water demand patterns may shift during dry conditions, with outdoor irrigation potentially increasing, though conservation measures help mitigate these increases. Comparing this reduced supply with projected demand allows assessment of the City’s ability to maintain reliable water service under short-term drought conditions. Table 7-3 presents the City’s total projected demand alongside the reduced supply.

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Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
2030 2035 2040 2045 2050
(AF) (AF) (AF) (AF) (AF)
Supply totals 10,012 10,446 10,902 11,381 11,885
Use totals 10,631 11,173 11,743 12,342 12,971
Surplus/(shortfall) (618) (727) (1841) (961) (1,087)
Recommended WSCP Actions
Water Shortage Level Level 1 Level 1 Level 1 Level 1 Level 1 WSCP - supply augmentation benefit 0 0 0 0 0
WSCP - use reduction savings benefit 800 900 1,100 1,200 1,300 Revised Surplus/(shortfall) 182 173 259 239 213
Percent of Total Supply 98% 98% 98% 98% 98%

7.2.2.3 Supply and Demand Comparison – Five Consecutive Dry Years A drought lasting five consecutive dry years represents a more severe scenario with prolonged reductions in groundwater recharge. For this condition, the available supply is estimated as a lower percentage of the normal-year recharge to account for the cumulative effects of multiple dry years. Comparing this long-term reduced supply with projected demand helps identify potential shortages and informs planning for drought response and water conservation measures. Table 7-4 summarizes the City’s total projected demand alongside the long-term reduced supply.

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Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
2030 2035 2040 2045 2050
(AF) (AF) (AF) (AF) (AF)
First Year
Supply totals 10,389 10,823 11,279 11,758 12,262
Use totals 11,438 11,980 12,550 13,149 13,779
Surplus/(shortfall) (1,049) (1,157) (1,271) (1,391) (1,517) Percent of Total Supply 110% 111% 111% 112% 112%
Recommended WSCP Actions
Water Shortage Level Level 1 Level 2 Level 2 Level 2 Level 2 WSCP - supply augmentation benefit 0 0 0 0 0
WSCP - use reduction savings benefit 1,400 1,500 1,600 1,700 1,800 Revised Surplus/(shortfall) 351 343 329 309 283
Percent of Total Supply 97% 97% 97% 97% 98%
Second Year
Supply totals 9,858 10,264 10,692 11,141 11,613
Use totals 11,438 11,980 12,550 13,149 13,779
Surplus/(shortfall) (1,581) (1,716) (1,859) (2,008) (2,166) Percent of Total Supply 116% 117% 117% 118% 119%
Recommended WSCP Actions
Water Shortage Level Level 2 Level 2 Level 2 Level 2 Level 2 WSCP - supply augmentation benefit 0 0 0 0 0
WSCP - use reduction savings benefit 1,900 2,000 2,100 2,300 2,400 Revised Surplus/(shortfall) 319 284 241 292 234
Percent of Total Supply 97% 97% 98% 97% 98%
Third Year
Supply totals 9,326 9,706 10,105 10,524 10,965
Use totals 11,438 11,980 12,550 13,149 13,779
Surplus/(shortfall) (2,112) (2,275) (2,446) (2,625) (2,814) Percent of Total Supply 123% 123% 124% 125% 126%

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Recommended WSCP Actions
Water Shortage Level Level 3 Level 3 Level 3 Level 3 Level 3 WSCP - supply augmentation benefit 0 0 0 0 0
WSCP - use reduction savings benefit 2,400 2,500 2,700 2,900 3,100 Revised Surplus/(shortfall) 288 225 254 275 286
Percent of Total Supply 97% 98% 97% 97% 97%
Fourth Year
Supply totals 8,795 9,147 9,518 9,907 10,316
Use totals 11,438 11,980 12,550 13,149 13,779
Surplus/(shortfall) (2,644) (2,833) (3,033) (3,243) (3,463) Percent of Total Supply 130% 131% 132% 133% 134%
Recommended WSCP Actions
Water Shortage Level Level 3 Level 4 Level 4 Level 4 Level 4 WSCP - supply augmentation benefit 0 0 0 0 0
WSCP - use reduction savings benefit 3,000 3,100 3,300 3,500 3,700 Revised Surplus/(shortfall) 356 267 267 257 237
Percent of Total Supply 96% 97% 97% 97% 98%
Fifth Year
Supply totals 8,263 8,588 8,930 9,920 9,668
Use totals 11,438 11,980 12,550 13,149 13,779
Surplus/(shortfall) (3,175) (3,392) (3,620) (3,860) (4,111) Percent of Total Supply 138% 139% 141% 142% 143%
Recommended WSCP Actions
Water Shortage Level Level 4 Level 4 Level 4 Level 4 Level 4 WSCP - supply augmentation benefit 0 0 0 0 0
WSCP - use reduction savings benefit 3,400 3,700 3,900 4,100 4,400 Revised Surplus/(shortfall) 225 308 280 240 289
Percent of Total Supply 97% 96% 97% 97% 97%

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7.2.3 WSRA Description of Management Tools and Options
California Water Code
10620 (f) An urban water supplier shall describe in the plan water management tools and options used by that entity that will maximize resources and minimize the need to import water from other regions.

Table 7-4 compares the total supply available in multiple dry years to projected demand totals.

Under multiple year drought conditions, the City may be required to implement water reduction actions to mitigate potential supply shortfalls. For the analysis, groundwater supply has been assumed to be at the average 1,077 AFY of groundwater extraction between 2030 and 2050, as noted in Table 6-9. However, the maximum annual extraction since 1993 was 2,092 AF in 2008, so additional groundwater extraction could be used to account for supply deficits in multiple dry years, as necessary. In addition, as discussed in Section 4.1, the per capita water use used for the demand projections is based on a rebound from drought restrictions and the economic recession, and future projections do not account for potential decreases in demand resulting from increased savings from passive conservation (that is, the future projections do not account for future increases in the use of water-saving appliances). The City and CCWD have demonstrated in recent years that, during extended dry periods, they can address deficits by reducing demand in their service areas.

7.3 DROUGHT RISK ASSESSMENT
California Water Code
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. 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 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.

As part of the 2025 UWMP, the California Water Code requires urban water suppliers to develop a Drought Risk Assessment (DRA). The DRA is a planning exercise that evaluates the potential impacts on available water supply if a five-year drought were to occur immediately following its

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preparation. As with the supply and demand assessment described in the previous section, the DRA focuses exclusively on the effects of a five-year drought. It also accounts for the influence of the City’s Water Shortage Contingency Plan on both available supply and total demand. Overall, the DRA provides a proactive review to prepare the City for a worst-case water supply scenario in the near term.

7.3.1 DRA Data, Methods, and Basis for Water Shortage Conditions The DRA assesses the impact on available water supply over the course of a five-year drought.

Since the City’s only water supply source is groundwater, the same data and methodology used to prepare the supply and demand assessment through 2050, as described in the preceding section, can be applied for the DRA.

For conservative planning purposes, the DRA assumes an unconstrained demand condition within the City’s service area, meaning that no additional demand management measures or water use reductions are applied beyond the City’s year-round prohibitions. This approach allows the DRA to determine whether further water use reductions, as outlined in the Water Shortage Contingency Plan, may be necessary. It should also be noted that the CCWD 2020 UWMP applies a similar unconstrained demand condition in its planning, which encompasses the City’s service area.

7.3.2 DRA Individual Water Source Reliability
The DRA water supply and demand comparisons are presented in Table 7-5, which indicates that available groundwater supplies are expected to meet projected demands through 2025, even under a five-year drought scenario. As reported in Chapter 6 the City’s potable water supply consisted of 85-90% of surface water purchased from CCWD and 10-15% of groundwater extracted from Pittsburg Plain groundwater basin; recycled water supplies were provided by Delta Diablo.

Consistent with the supply and demand assessment discussed in a previous section the City’s DRA assumes an available groundwater supply consistent with the average of historical groundwater pumped between 1993 and 2025, an available surface water supply consistent with at least 85% of the City’s projected demand during the drought conditions, and available recycled water to meet the existing demand requirements. Additionally, available supply volume reductions, as extracted from the CCWD 2020 UWMP, are applied during the five-year drought to quantify the effect of consecutive dry years. The available water supply volumes for each water source are documented below:
• Surface Water: The available surface water supply volume during a normal water year is assumed to equal to the rate of the City’s unconstrained water demand as documented in the 2025 UWMP Chapter 4. This available supply volume is reduced during the course of a five-year drought based on the percentage provided by CCWD.

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• Groundwater: The available groundwater supply volume is estimated from the average of historical groundwater pumped between 2021 and 2025, or 1,077 AFY. The City’s groundwater production has proven generally stable even under extended dry periods.

Therefore, the available groundwater supply volume during a five-year drought is assumed the same as the historically average pumping volume, or 1,077 AFY. • Recycled Water: The available recycled water supply volume is assumed equal to the recycled water customers’ demand. Recycled water from Delta Diablo has been a highly reliable supply and as such the available recycled water supply volume during the drought condition remains the same as in a normal year.

As shown in Table 7-5, the City is expected to have sufficient supplies to meet demands should a multiple year drought occur in the immediate future.

7.3.3 DRA Total Water Supply and Use Comparison
The City’s DRA is summarized in Table 7-5. Based on assumptions for available supplies consistent with prior planning efforts and considering an unconstrained demand condition, the DRA indicates that the City is able to meet projected water demands in 2026 and 2027; however, beginning in 2028, the City would be unable to meet projected demands under a five-consecutiveyear drought scenario. Water Shortage Level 1 would be implemented beginning in 2029, followed by Water Shortage Level 2 in 2030, requiring use-reduction measures to minimize water supply shortages within the City.

Submittal Table 7-5 Retail: Five-Year Drought Risk Assessment Water Code Section 10635(b)(3)
Totals 2026 2027 2028 2029 2030
Demands
Total Water Use 8,750 9,220 9,690 10,161 10,631
Supplies
Groundwater Supplies 10,940 10,459 9,968 9,465 8,952
Surplus/Shortfall without WSCP Action 2,190 1,239 277 (695) (1,679) Recommended WSCP Actions (use reduction and supply augmentation) Water Shortage Level Level 0 Level 0 Level 0 Level 1 Level 2 WSCP Actions - supply augmentation benefit 0 0 0 0 0
WSCP Actions - use reduction savings benefit 0 0 300 1,300 2,300 Revised Surplus/(shortfall) 2,190 1,239 277 205 221
Resulting % Use Reduction from WSCP Action 0% 0% 0% 9% 18%

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2025 Urban Water Management Plan

7.4 SUBMITTAL TABLES SUMMARY
This chapter included the following submittal tables:
• Table 7-1: Basis of Water Year Data
• Table 7-2: Normal Year Supply and Use Comparison
• Table 7-3: Single Dry Year Supply and Use Comparison
• Table 7-4: Multiple Dry Years Supply and Use Comparison • Table 7-5: Five-Year Drought Risk Assessment

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May 2026 8-1 City of Pittsburg
2025 Urban Water Management Plan
202City of Pittsburg 5

8.0 CHAPTER 8 – WATER SHORTAGE CONTINGENCY PLAN
This chapter presents the City's Water Shortage Contingency Plan (WSCP), a required framework for responding to water shortages through standardized conservation stages, response actions, and emergency supply interruption procedures.

8.1 WATER SUPPLY RELIABILITY ANALYSIS
California Water Code
10632.3 It is the intent of the Legislature that, upon proclamation by the Governor of a state of emergency under the California Emergency Services Act (Chapter 7 (commencing with Section 8550) of Division 1 of Title 2 of the Government Code) based on drought conditions, the board defer to implementation of locally adopted water shortage contingency plans to the extent practicable.
10632 (a)(1) The analysis of water supply reliability conducted pursuant to Section 10635. 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 currently uses a combination of surface water, groundwater and recycled water as sources of water supply. The groundwater is extracted from two wells in the Pittsburg Plain groundwater basin. The groundwater basin is managed by County of Contra Costa Groundwater Sustainability Agency. The surface water is diverted from CCWD’s Contra Costa Canal. The recycled water is provided by Delta Diablo through the City’s recycled water distribution system.

Chapter Focus
This chapter focuses on the City’s Water Shortage Contingency Plan (WSCP), a critical tool for proactive and efficient water management during shortages. The WSCP provides a structured framework for monitoring supply conditions and implementing pre-planned response actions and minimizing service disruptions. The WSCP defines levels of water shortage, outlines demand reduction measures, and describes the process for conducting an annual supply and demand assessment.

The WSCP prepares the system to address both predictable and unexpected risks, including natural disasters or the failure of a primary water source by establishing tiered demand reduction and supply enhancement measures for events such as earthquakes, fires, floods, or system failures, allowing the City to anticipate challenges and respond effectively. It also addresses communication protocols during shortages, methods for determining compliance and enforcing water use restrictions, discussing financial impacts, and monitoring and reporting the effectiveness of any implemented water demand reduction measures.

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May 2026 8-2 City of Pittsburg
2025 Urban Water Management Plan
Consistent with previously planning efforts the City’s Water Supply Reliability Analysis considers the available supply volume for each source upon recycled water and surface water purchase agreement and historical groundwater pumping data. The Water Supply Reliability Analysis also considers the effects on available supply during a single-dry and five-year dry period; for conservative planning purposes supply reduction percentages from the CCWD 2025 UWMP were used to estimate the available groundwater supply during these dry-year periods.

As part of the 2025 UWMP, the City has also prepared a Drought Risk Assessment (DRA), a proactive planning tool designed to prepare the City for potential worst-case water supply conditions. The DRA evaluates the City’s projected water demands over the next five years against estimated available supplies in the event of a five-year drought. The results of the DRA, prepared as part of the 2025 UWMP, indicate that the City has adequate supplies to meet projected demands over the next five years.

Pursuant to the California Water Code, the City’s Water Shortage Contingency Plan also includes a seismic risk assessment, which describes the vulnerability of the Pittsburg water system facility to earthquakes and other seismic hazards. Details on the Seismic Risk Assessment and Mitigation Plan are provided in a subsequent section of this chapter.

8.2 ANNUAL WATER SUPPLY AND DEMAND ASSESSMENT
California Water Code
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:
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. 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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May 2026 8-3 City of Pittsburg
2025 Urban Water Management Plan
Updates to the California Water Code now require urban water suppliers to prepare an annual water supply and demand assessment (Annual Assessment). The results of this assessment must be summarized in a report submitted to the DWR by July 1 of each year, with the first report due on July 1, 2022. The purpose of the Annual Assessment is to ensure that water suppliers proactively evaluate available water supplies and demand, while identifying any potential need to implement the Water Shortage Contingency Plan.

It should be noted that the DWR is currently preparing a stand-alone guidance document to provide general procedures for urban water suppliers in completing the Annual Assessment. At this time, the decision-making process and steps for completing the Annual Assessment are preliminary and will be refined once the DWR guidance document is finalized.

8.2.1 Decision Making Process
This section describes the decision-making process for preparing and approving the Annual Assessment each year. The reporting timeline is illustrated in Figure 8-1, and the milestones documented on Table 8-1A.

It should be noted that the Annual Assessment and associated decision-making process will rely on the findings of the CCWD Annual Assessment, which provides documentation of available water supply information and any County-wide water shortage actions that may be required.

Figure 8-1 Annual Assessment Reporting Timeline

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May 2026 8-4 City of Pittsburg
2025 Urban Water Management Plan
Table 8-1A Annual Assessment Reporting Milestone
Key Timeline Description
September to
February:

Ongoing
Monitoring and
Review
For most of the year, City staff will continue to monitor and report monthly water production and consumption. This data will be used when preparing the Annual Assessment to compare system-wide water demands year-toyear and to project demands for the following year.

March: Initiate
WSCP Annual
Assessment
City staff will initiate the Annual Assessment process by compiling collected water demand and production data. Other relevant information includes, but is not limited to:
• Land Use/Planning: Changes in land use or the number of building permits, which will be used to estimate demand for the following year.
• Hydrologic Year Review: Review of rainfall and hydrologic conditions over the past year, noting that the City’s wet year typically ends in April.
• Climate Forecast: Consideration of any available climate projections.

The purpose of gathering this information is to assess the various factors affecting water demand across the City’s service area. This analysis will guide projections of water demand for the upcoming year.

April: Review
Available Supply
Information
A preliminary Annual Assessment will be completed by CCWD prior to April.

City staff will review this document upon its availability and use it as the basis for estimating available water supply for the upcoming year. If necessary, staff will also prepare to implement any water shortage response actions identified by CCWD.

May: City
Council Review
of Annual
Assessment
The Annual Assessment draft will be presented to the City Council for information and discussion. If the assessment recommends water shortage actions, the City Council will be asked to authorize the implementation of the recommended measures.

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May 2026 8-5 City of Pittsburg
2025 Urban Water Management Plan
Key Timeline Description
June: Finalize
Annual
Assessment
The Annual Assessment is finalized after considering feedback received during the City Council review process.

July: Submit
Annual
Assessment
The Annual Assessment will be submitted to DWR on or before July 1st.

8.2.2 Data and Methodologies
This section describes the key data and methodologies used to prepare the Annual Assessment.

This includes historical water supply information, historical and projected water demand, and projected water supply, which the City uses to evaluate their water supply reliability for both a normal and a subsequent dry-year condition.

8.2.2.1 Evaluation Criteria
The primary criteria used in preparing the City’s Annual Assessment are projected water demand and available supply. Available supply information is based on a County-wide review prepared by CCWD. Demand projections are developed using multiple factors, including historical demand, land use changes, building permits, and historical rainfall. The City will continue to evaluate its Annual Assessment preparation process, and additional criteria may be incorporated if considered appropriate.

8.2.2.2 Water Supply
The City currently relies on raw surface water and groundwater as the sources of supply. The City is within the CCWD service area and receives surface water diversions from the Contra Costa Canal as provided by CCWD. The City also delivers extracted groundwater from two wells to the WTP. Surface water from CCWD and groundwater from the City’s wells are blended at the City’s water treatment plant, metered, and delivered to customers within the City.

As part of the DRA, monthly production records will be reviewed and used to characterize the City’s current water production requirement. The current demands will be compared to previous years to estimate production requirements for the upcoming year.

8.2.2.3 Current Year Unconstrained Customer Demand
Billed water consumption is reported monthly and will be used to characterize the City’s current water use. These records will be compared to the corresponding months of the previous year to identify significant changes in water use patterns across the City’s service area. In addition,

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May 2026 8-6 City of Pittsburg
2025 Urban Water Management Plan
information on recent developments and current building permits will allow City staff to estimate anticipated changes in water demand for the upcoming year.

8.2.2.4 Current Year Available Supply
The Annual Assessment estimates the available water supply for the current year under existing hydrologic conditions, as well as for a potential subsequent dry year. These supply estimates will be based on the Drought Risk Assessment supply estimation methodology documented in a previous chapter of this 2025 UWMP and will also incorporate information from the CCWD Assessment.

8.2.2.5 Infrastructure Considerations
The Annual Assessment will include a review of ongoing capital projects that may affect the demand and supply projections. Examples of such capital projects include water loss reduction, distribution system expansions to serve growth, or the development of new groundwater wells.

The City’s 2023 Water System Master Plan Update identifies any additional infrastructure considerations to be implemented within the City’s service area.

8.3 WATER SHORTAGE LEVELS
The City has adopted the six standard water shortage levels recommended by DWR, as shown in Table 8-1B. Identifying the appropriate shortage level will be in accordance with the procedures outlines in a section of the Annual Assessment procedures.

California Water Code
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.
10632 (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.

For example, if the Annual Assessment identifies a 22% water shortage, the City would be considered in a Severe Drought condition. Based on recommendations from City staff, the City Council has the authority to declare the appropriate conservation level necessary to manage system demands and mitigate the shortage. The City Council may also adjust or terminate a shortage response level as recommended by staff.

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May 2026 8-7 City of Pittsburg
2025 Urban Water Management Plan
Table 8-1B DWR Water Shortage Levels
Shortage Level Shortage Level Condition Percent Shortage Range 0 Normal None
Level 1 Alert Up to 10%
Level 2 Significant Up to 20%
Level 3 Severe Up to 30%
Level 4 Critical Up to 40%
Level 5 Crisis Up to 50%
Level 6 Emergency > 50%
The City’s surface water supply relies on raw water imported by CCWD. During drought periods, when imported water availability is reduced, CCWD may contact water suppliers to reduce raw water import to maintain sustainable water supply within delta area. To support these efforts and reduce water consumption citywide, the City maintains a water conservation ordinance that can be invoked to implement water use restrictions.

The City’s conservation ordinance currently establishes permanent water use restrictions and a multi-stage water rationing plan that can be implemented to adjust water use during shortage conditions. Each rationing stage specifies a water demand reduction percentage to be applied to normal water demands. Implementation of the plan depends on the cause, severity, and anticipated duration of the water shortage, and may include a combination of voluntary and mandatory conservation measures to reduce citywide water use. The water shortage stages are summarized in Table 8-1C on the following page.

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May 2026 8-8 City of Pittsburg
2025 Urban Water Management Plan
Table 8-1C Water Shortage Contingency Plan Levels
Shortage
Level
Percent
Supply
Shortage/
Reduction
Pittsburg
Shortage
Level Water Supply Condition
Level 0 None Normal At Level 0, no Water Supply Shortage condition exists.

Level 1 Up to 10% Alert
A Level 1 Water Supply Shortage condition exists
when City of Pittsburg notifies its water users that
due to drought, the supply reductions targets are up
to 10%.

Level 2 11 to 20% Significant
A Level 2 Water Supply Shortage condition exists
when the City of Pittsburg notifies its water users
that due to drought, the supply reductions targets
are 11 to 20%.

Level 3 21 to 30% Severe
A Level 3 Water Supply Shortage condition exists
when the City of Pittsburg notifies its water users
that due to drought, the supply reductions targets
are 21 to 30%.

Level 4 31 to 40% Critical
A Level 4 Water Supply Shortage condition exists
when the City of Pittsburg notifies its water users
that due to drought, the supply reductions targets
are 31 to 40%.

Level 5 41 to 50% Crisis
A Level 5 Water Supply Shortage condition exists
when the City of Pittsburg notifies its water users
that due to drought, the supply reductions targets
are 41 to 50%.

Level 6 > 50% Emergency
A Level 6 Water Supply Shortage condition exists
when the City of Pittsburg notifies its water users
that due to drought, the supply reductions targets
are greater than 50%.

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May 2026 8-9 City of Pittsburg
2025 Urban Water Management Plan
Submittal Table 8-1: Cross-reference for Standard vs Supplier Shortage Levels Water Code Section 10632(a)(3)(B)

8.4 SHORTAGE RESPONSE ACTIONS
Pursuant to CWC 10632(a)(4), this section documents the detailed shortage response actions, organized into categories that correspond with the established shortage levels.

California Water Code
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.
10632.2 An urban water supplier shall follow, where feasible and appropriate, the prescribed procedures and implement determined shortage response actions in its water shortage contingency plan, as identified in subdivision (a) of Section 10632, or reasonable alternative actions, provided that descriptions of the alternative actions are submitted with the annual water shortage assessment report pursuant to Section 10632.1. Nothing in this section prohibits an urban water supplier from taking actions not specified in its water shortage contingency plan, if needed, without having to formally amend its urban water management plan or water shortage contingency plan.

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May 2026 8-10 City of Pittsburg
2025 Urban Water Management Plan
The City’s WSCP includes shortage response actions that may be implemented during a water shortage. In addition, the City’s municipal code establishes permanent, year-round water use restrictions to minimize water waste. Both the shortage response actions and permanent water use restrictions are summarized in this chapter.

8.4.1 Supply Augmentation
The City currently relies on a combination of groundwater and surface water to meet demand requirements within the service area and there are no known opportunities for water supply augmentation through actions such as exchanges, transfers, or purchase programs. Therefore, supply augmentation actions are excluded from the City’s Water Shortage Contingency Plan at this time.

Submittal Table 8-2 Retail: Supply Augmentation and Other Actions Water Code Section 10632(a)(4)(A), (C) and (E)
Yes Is the Supplier completing this table using the standard six levels? (yes/no) Shortage
Level
Supply Augmentation
Methods and Other
Actions by Water
Supplier
How much is this going to
reduce the shortage gap?
Additional Explanation or
Reference
Volume or (OPTIONAL)
Percentage
Shortage Gap
Reduction
Value
(May be a range)
(AF)
1 Percentage 0 No Action is taken.
2 Percentage 0 No Action is taken.
3 Percentage 0 No Action is taken.
4 Percentage 0 No Action is taken.
5 Percentage 0 No Action is taken.
6 Percentage 0 No Action is taken.

8.4.2 Demand Reduction
The City of Pittsburg can implement a variety of demand reduction measures as response actions to corresponding water shortage levels. These measures may include restrictions on irrigation and outdoor water use, changes to water rate structures, public education and outreach efforts, or adjustments to water supply service. Other demand reduction such as infrastructure improvements or the installation of water efficient fixtures are considered long-term water demand reduction strategies and are therefore not included as actions in this Water Shortage Contingency Plan. City staff will continue to evaluate additional demand management approaches, including the potential implementation of Water Offsets for new developments and drought rate structures in the immediate future.

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May 2026 8-11 City of Pittsburg
2025 Urban Water Management Plan
Consumption reduction actions are measures taken by the City to reduce demand within the service area, and usually in response to a declared water shortage or emergency condition. The City’s consumption reduction actions and reduction action matrix, for each shortage level, are summarized in Table 8-3 and Table 8-3A respectively, along with brief descriptions or explanation.

8.4.3 Operational Changes
During a water shortage, changes to water system operations may be implemented. These operational changes may include enhanced monitoring and tracking of water use, adjustments to fire hydrant testing frequencies, modifications in maintenance cycles, and expedited repair of water leaks.

8.4.4 Additional Mandatory Restrictions
Additional mandatory restrictions are described in a previous section.

8.4.5 Emergency Response Plan
The City maintains an Emergency Operations Plan (EOP), most recently updated in 2018, which provides a framework for addressing catastrophic supply interruptions caused by various hazards, including seismic, geological, wildfire, and flooding events. The plan outlines the actions required by the City before, during, and after an emergency and provides guidance for responding to major emergencies and disasters.

8.4.6 Seismic Risk Assessment and Mitigation Plan
California Water Code
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. 10632.5 (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.
10632.5 (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.

In addition to the Emergency Response Plan described in a previous section, the California Water Code requires urban water suppliers to document a locally appropriate multi hazard mitigation plan developed under the federal Disaster Mitigation Act of 2000, that includes documentation of seismic risk assessment. County of Contra Costa developed such a hazard mitigation plan in 2022. The City’s service area is included in the boundaries reviewed as part of this mitigation plan.

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May 2026 8-12 City of Pittsburg
2025 Urban Water Management Plan
Submittal Table 8-3 Retail: Demand Reduction Actions
Water Code Section 10632(a)(4)(B) and (E)
Yes Is the Supplier completing this table using the standard six levels? (yes/no) Shortage
Level Demand Reduction Actions
How much is this going to reduce
the shortage gap?
Additional Explanation or Reference
(OPTIONAL)
Penalty,
Charge, or
Other
Enforcement?
Volume or
Percentage
Drop down
Shortage Gap
Reduction
Value
(AF)
1 Landscape - Limit landscape
irrigation to specific times Percentage 5% Irrigation between 11am and 6pm is discouraged. No 1 Landscape - Prohibit certain
types of landscape irrigation Percentage 5%
Irrigating landscaped areas with water in
excess of that minimal amount required to
sustain plant life.

Yes
1 Landscape - Other landscape
restrictions or prohibition Percentage 5%
The application of potable water to
outdoor landscapes during and up to
within 48 hours after measurable rainfall.

Yes
1 Water Features - Restrict
water use for decorative water
features, such as fountains
Percentage 5%
The use of water for decorative
fountain/pools, except for recycled water
approved for such use.

Yes
1 Other - Customers must repair
leaks, breaks, and malfunctions
in a timely manner
Percentage 5% Failing to repair a controllable leak of
water.

Yes
1 Other - Require automatic shut
of hoses Percentage 5% Using a hose without an automatic shutoff nozzle. Yes

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May 2026 8-13 City of Pittsburg
2025 Urban Water Management Plan
Shortage
Level Demand Reduction Actions
How much is this going to reduce
the shortage gap?
Additional Explanation or Reference
(OPTIONAL)
Penalty,
Charge, or
Other
Enforcement?
Volume or
Percentage
Drop down
Shortage Gap
Reduction
Value
(AF)
1 Other - Prohibit use of potable
water for washing hard
surfaces
Percentage 5%
Washing sidewalks, driveways, parking
areas, tennis courts, patios, or other
exterior paved areas except to alleviate a
condition inimical to the public health or
safety.

Yes
1 Other Percentage 5%
Permitting water to flow onto a sidewalk,
driveway, or street, or escape down a
gutter, ditch or other service drain.

Yes
1 Expand Public Information
Campaign Percentage 5% Education program. No
1 Offer Water Use Surveys Percentage 5%
City currently providing water use surveys
to 112 irrigators, and CCWD is offering
free surveying to residential customers.

No
1 Provide Rebates on Plumbing
Fixtures and Devices Percentage 5% CCWD provides rebates for efficient plumbing fixtures and devices in Pittsburg. No 1 Provide Rebates for Landscape
Irrigation Efficiency Percentage 5% CCWD provides rebates for CIMIS controlled irrigation systems. No 1 Provide Rebates for Turf
Replacement Percentage 5% CCWD provides rebated for lawn replacements in Pittsburg. No 1 Other Percentage 5% Demand Reduction program. No
1 Other Percentage 5% Voluntary Rationing. No
1 Decrease Line Flushing Percentage 5% No
1 Reduce System Water Loss Percentage 5% No

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May 2026 8-14 City of Pittsburg
2025 Urban Water Management Plan
Shortage
Level Demand Reduction Actions
How much is this going to reduce
the shortage gap?
Additional Explanation or Reference
(OPTIONAL)
Penalty,
Charge, or
Other
Enforcement?
Volume or
Percentage
Drop down
Shortage Gap
Reduction
Value
(AF)
1 Increase Water Waste Patrols Percentage 5% No
2 Landscape – Limit landscape
Irrigation to specific times Percentage 10%
Irrigation between 9am and 5pm is
restricted (Exception: hand watering,
reparation or recycled water).

Yes
2 Landscape - Limit landscape
irrigation to specific days Percentage 10%
Irrigation watering limited to three days
per week, unless controlled by a CIMISconnected water controller, and verified by City.

Yes
3 Landscape - Limit landscape
irrigation to specific days Percentage 15%
Irrigation watering limited to two days per
week, unless controlled by a CIMISconnected water controller, and verified by City.

Yes
3 Other Percentage 15% Mandatory rationing. Yes
3 Other Percentage 15% Percentage reduction by customer type, and/or high use penalties. Yes
4 Moratorium or Net Zero
Demand Increase on New
Connections
Percentage 20% Yes
4 Implement or Modify Drought
Rate Structure or Surcharge Percentage 20% Water rate increases. Yes 5 Other Percentage 20% Restrict building permits. Yes
6 Other Percentage 20% Per capita allotment by customer type. Yes 6 Other Percentage 20% Nonessential use of water prohibited. Yes

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2025 Urban Water Management Plan
Table 8-3A Reduction Action Matrix
Restricted Watering
or Irrigation Hours
---
Discouraged: 11:00 AM -
6:00 PM PST
Restricted: 9:00 AM -
5:00 PM PST
(Exception:

Hand watering,
reparation or recycled
water)
☑ ☑ ☑ ☑
Social Programs ---

1. Education Programs 2. Water Use Surveys and
Demand Reduction 3.

Rebates for controlled and
efficient fixings or
replacements
☑ ☑ ☑ ☑ ☑
Watering Days ---
Any time after 48 hours of
rainfall
3 days/week
(Exception: CIMIS
water controller)
2 days/week
(Exception: CIMIS
water controller)
☑ ☑ ☑
Obligation to Fix Water Fixtures
---
Immediate Repair of Water Leaks and
Malfunctioning Fixtures
☑ ☑ ☑ ☑ ☑
Limits on Filling
Ornamental Ponds or
Lakes
---
Only with Recycled
Approved Water
☑ ☑ ☑ ☑ ☑
Water Structures --- Penalty for permitting
water flow or sewer flow
drain on public spaces and
infrastructure
☑ ☑ ☑ ☑ ☑
Exceptions for Watering Restrictions
---
Minimal amount required
to sustain plant life
☑ ☑ ☑ ☑ ☑
Limits on Potable
Services
--- --- ---
Mandatory
Rationing,
Percentage
Reduction and High
Use Penalties
No issuance of new
potable services & Water Rate Increases
☑ ☑
Limits on Buildings
and Construction --- --- --- --- ---
No issuance of new
building permits ☑
Allotment and
Consumption Limits
--- --- --- --- --- ---
Water Demand
per Capita by
Customer Type
and Essential
Use Only
4/15/2026
Level 1
Up to 10% Reduction
Level 2
11 - 20% Reduction
Level 3
21 - 30% Reduction
Level 4
31 - 40% Reduction
Notes:

1. Source: City of Pittsburg 2025 Annual Water Supply and Demand Assessment.

2. Every level of shortage includes the most restrictive limitations of the previous levels (e.g. level 6 includes level 0 through 5 prohibitions).

Level 5
36 - 50% Reduction
Level 6
>50% Reduction
Washing Restrictions ---
Prohibition to wash
hard surfaces
(Exception: In case of
public health or
safety)
☑ ☑ ☑ ☑ ☑
Response Actions
Level 0
No Reduction

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May 2026 8-16 City of Pittsburg
2025 Urban Water Management Plan

8.4.7 Shortage Response Action Effectiveness
In addition to documenting demand reduction actions, the 2025 UWMP also estimates the effectiveness of these actions in reducing systemwide demand. The City records water consumption and production on a monthly basis, and this data can be used to evaluate the effects of any demand reduction actions that are implemented.

Following the end of the drought, from 2023 through 2025, the City has maintained Water Shortage Level 1, indicating a lower, precautionary level of supply stress with voluntary or minor conservation measures in place. Based on a comparison of historical monthly production data, it is estimated that systemwide water use was approximately up to 10 percent lower during the Level 1 Water Shortage period compared to other years. Therefore, as documented in Table 8-3, the Level 1 Water Shortage response actions are estimated to achieve a reduction effectiveness of approximately up to 10 percent.

8.5 COMMUNICATION PROTOCOLS
California Water Code
10632 (a) Every urban water supplier shall prepare and adopt a water shortage contingency plan as part of its urban water management plan consists of each of the following elements:
(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
When the City identifies the need for short-term water use reductions as directed by the Water Shortage Contingency Plan or the Annual Assessment, clear and effective communication will be critical to achieve the necessary demand reductions. Methods of public notification may include newspaper publications, bill inserts, announcements on the City’s website, social media posts, and press releases or informational campaigns. These public notification methods would be implemented in the event of a Level 2 Water Shortage and would increase in frequency in the event of a Level 3 and higher Water Shortage.

8.6 COMPLIANCE AND ENFORCEMENT
Customers who violate the provisions of the water code related to water shortage conditions may be subject to the following penalties:

California Water Code
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.

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2025 Urban Water Management Plan
• First violation within any 12 consecutive months will result in a fine of one hundred dollars. • Second violation within any 12 consecutive months will result in a fine of two hundred dollars.
• Third violation within any 12 consecutive months will result in a fine of three hundred dollars.

The last column in Submittal Table 8-3 R indicates whether any penalties, fines, or other enforcement actions are associated with a specific demand reduction action.

8.7 LEGAL AUTHORITIES
California Water Code
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. 10632 (a)(7)(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.
10632 (a)(7)(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.

Division 1, Section
350
Declaration of water shortage emergency condition. 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 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.

This section lists relevant statutory authorities, local ordinances, codes, and resolutions, as well as any water supply contract provisions that apply to the City.

8.7.1 Declaration of Water Shortage
The City has the legal authority to implement and enforce its water shortage response actions and relative penalties, water charge adjustments, and water service alteration or prohibition.

As an example, in 2015, the City passed Resolution 15-13030 “Water Conservation Program and 2010 Urban Water Management Plan” in response to ongoing drought conditions experienced in the State and a request from CCWD to reduce water use by 15%. This resolution defines ‘prohibited non-essential uses’ and outlines the four water shortage stages and their respective customer reduction goals. In addition, the City passed Resolution 15-13051 “Increase Water Rates and Establish Penalties for High Water Use” in response to the State’s emergency regulations requiring the City to reduce its total water use by 20% for the months of June 2015 through February 2016. This resolution defines tiered water rates for residential customers and a flat rate for all other customers, as well as the penalties for excessive use.

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8.7.2 Proclamation of Local Emergency
Pursuant to California Government Code, California Emergency Services Act (Article 2, Section 8558), the City is required to coordinate with any city or county within which it provides water supply services for the possible proclamation of a local emergency.

8.8 FINANCIAL CONSEQUENCES OF A WATER SHORTAGE

CONTINGENCY PLAN
California Water Code
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).
(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]
The activation of the Water Shortage Contingency Plan and associated Water Shortage Levels has financial implications for the City. Reduced water consumption can lead to decreased revenue, while proactive operational measures may increase operational and maintenance costs.

The City Council has the authority to increase water rates to offset reduced revenues. These reserve funds or rate modifications have the ability to mitigate financial consequences of the Water Shortage Contingency Plan. Additionally, potential mitigation actions specific to the drought stages are documented in Table 8-4. These are preliminary measures and would be evaluated in greater detail if a water shortage occurs.

8.9 MONITORING AND REPORTING
Monitoring and reporting under the Water Shortage Contingency Plan and Annual Assessment will be based on metered water production and consumption data. Ongoing review and comparison with historical data for corresponding months will allow the City to assess the effectiveness of WSCP measures. Additionally, in response to implemented shortage response actions and water shortage levels, the City’s Water Department may increase meter reading frequency to better collect, track, and analyze water use.

California Water Code
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.

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Table 8-4 Financial Consequences of WSCP

8.10 WSCP REFINEMENT PROCEDURES
California Water Code
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 WSCP is intended as a dynamic planning tool subject to ongoing refinement as needed.

Following the declaration of a water shortage and implementation of the WSCP, the monitoring and reporting procedures described in a previous section will provide insight into its effectiveness.

City staff will assess the performance of communication protocols, demand reduction actions, operational adjustments, and financial mitigation measures. If this review identifies opportunities for procedural improvements or new WSCP actions, staff may incorporate these into an amended 2025 UWMP.

8.11 SPECIAL WATER FEATURE DISTINCTION
The California Water Code requires urban water suppliers to differentiate between water features that are artificially supplied and swimming pools or spas. The City’s current demand reduction actions reflect this distinction, as documented in a previous section.

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8.12 PLAN ADOPTION, SUBMITTAL, AVAILABILITY, AND AMENDMENT

PROCEDURES
California Water Code
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 adoption and submittal process for the WSCP, as well as its public availability, follow the same procedures as the City’s UWMP. If an amendment is made, stakeholder and public notification will be conducted in accordance with UWMP procedures prior to adoption of the amended plan.

8.13 SUBMITTAL TABLES SUMMARY
This chapter included the following submittal table(s):
• Table 8-1: Cross-reference for Standard vs Supplier Shortage Levels • Table 8-2: Supply Augmentation and Other Actions
• Table 8-3: Demand Reduction Actions
California Water Code
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.

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9.0 CHAPTER 9 – DEMAND MANAGEMENT MEASURES
This chapter documents the City’s efforts to reduce water demand using specific demand measurement measures (DMMs) as well as any other actions to maintain ongoing water conservation.

9.1 DEMAND MANAGEMENT MEASURES FOR RETAIL SUPPLIERS
California Water Code
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 measure 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.

9.1.1 Required Demand Management Measures

9.1.1.1 Water-Waste Prevention Ordinances
The City has water waste prevention ordinances stipulated in the Municipal Code, which are permanent water use restrictions and prohibit the following:

Chapter Focus
This chapter summarizes the demand management measures, which are additional actions the City plans on implementing to achieve water use targets and maintain ongoing conservation. The purpose of this section is to provide a comprehensive overview of the water conservation programs the City has implemented, is currently implementing, and plans to implement to achieve its water conservation goals.

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• Permitting water to flow onto a sidewalk, driveway or street, or escape down a gutter, ditch or other service drain.
• Irrigating landscaped areas with water in excess of the minimal amount required to sustain plant life, as determined by a staff water audit.
• Failing to repair a controllable leak of water.
• Washing sidewalks, driveways, parking areas, tennis courts, patios, or other exterior paved areas except to alleviate a condition inimical to public health or safety. • The use of water for decorative fountains or pools, except for recycled water approved for such use.
• Using a hose without an automatic shutoff nozzle.
• Outside watering with City-furnished water that results in excessive flooding or runoff into a gutter, drain, walkway, or sewer.
• Irrigation between 11 AM and 6 PM is discouraged.
• The application of potable water to outdoor landscapes during and up to within 48 hours after measurable rainfall.
• The serving of drinking water, other than upon request, in eating or drinking establishments, including but not limited to restaurants, hotels, cafes, cafeterias, bars, or other public places where food or drink are served and/or purchased The City also encourages operators of hotels and motels to provide guests with the option of choosing not to have towels and linens laundered daily; the facilities are required to prominently display notice of this option in each guestroom using easily understood language.

9.1.1.2 Metering
California Water Code
526 (a) Notwithstanding any other provisions 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. 527 (a) An urban water supplier that is not subject to Section 526 shall do both 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 of Pittsburg completed the Automatic Meter Reading (AMR) installation project for substantially all residential meters by approximately 2022–2023.

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9.1.1.3 Conservation Pricing
The City has implemented conservation pricing for residential customers and Commercial, Industrial and Institutional (CII) accounts. The City has a tiered rate structure for single family residential customers.

9.1.1.4 Public Education and Outreach
The City, in cooperation with the CCWD, has multiple programs in place to reduce water consumption by raising public awareness of water conservation. The School Education Program aims to teach children the importance of water and water conservation and provides programs that promote and reinforce the recognition of activities that could affect water quality, understanding the connection between health and water quality, understanding watershed biodiversity, and the importance of water conservation.

The City has also developed a Public Information Program in partnership with CCWD, that aims to promote water conservation messages and programs through a variety of media avenues including publications, website pages, presentations, community event booths, mailers, newsletters, newspaper ads, and water education programs.

The City has also developed a CII conservation program in partnership with CCWD. This program includes inspection of individual water-using devices and the detailed report listing improvements that can be made to the equipment to increase water use efficiency. Rebates are offered as incentive to upgrade to more efficient equipment. The City also performs indoor and outdoor water use survey programs for single-family and multi-family residential areas and provides rebates for water-efficient appliances.

9.1.1.4.1 Water Conservation Rebate Programs
The City is currently implementing the following rebate programs in collaboration with CCWD:

Lawn to Garden Rebate Program
The Lawn to Garden Rebate Program provides an incentive to customers to replace water-thirsty lawns with water wise landscaping. Residential customers can receive up to $1,000 and commercial properties up to $20,000. The program, along with many like it throughout California, aims to encourage sustainable, water-wise landscaping.

Smart Irrigation Timer Rebates
Smart irrigation timers save water by allowing the irrigation schedule to be automatically updated with changes in the weather. Many of the new models allow homeowners to manage their irrigation using an app on their smart phone. The District provides a rebate up to 50% of the list cost of the irrigation timer.

Pool Cover Rebates

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Pool covers save water by reducing the amount of water that is evaporated when the pool is not in use. The District provides a rebate of $50 to customer who purchase a new pool cover.

Greywater Rebate
The District offers a $50 rebate as an incentive for homeowners to install a “simple” greywater system at their homes.

9.1.1.5 Programs to Assess and Manage Distribution System Real Loss In order to determine if leaks exist in the supply and distribution system, actual metered water use is compared to total well production. Monthly production is tracked and reviewed annually to determine if the system is experiencing any significant losses. Upon the determination that a source of significant loss exists, the Maintenance Department will determine the specific location of the loss and schedule any discovered leaks for repair. A record of leak discovery and repair are kept, as well as documentation of each incident and/or detected leak. Upon the completion of a repair, follow up comparison of production versus water use is tracked to estimate the total amount of water saved due to the repair.

The City has implemented a system water audit to determine if leaks in the supply and distribution system exist and a method for repair in the event that the leaks become significant. The system audit is performed by tracking the actual metered water use, which can be compared to total well production. Production is tracked monthly and reviewed annually to determine if the system exhibits significant losses.

9.1.1.6 Water Conservation Program Coordination and Staffing Support In order to manage and coordinate the water conservation programs implemented by the City, an employee is appointed to be responsible for water conservation. The coordinator’s position has been active in the City since 1995, as a part-time responsibility of the City’s Public Works Director.

The majority of the funding for these duties is through CCWD’s program and is included in the raw water rates.

9.1.1.7 Other Demand Management Measures
Since 1988 CCWD has been distributing and installing low flow showerheads to single family and multi-family residential customers. Additionally, CCWD provides faucet aerators to single family and multi-family residential customers. The City has coordinated with CCWD in the implementation of this program throughout the City’s service area.

In 1999 CCWD began providing rebates for the installation of high-efficiency washing machines.

This program is ongoing and the City participates in the implementation of this rebate within its service area.

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CCWD also offers a high efficiency toilet replacement program, which provides customers with a rebate after the installation of a qualifying toilet or a discount voucher for the purchase of specific toilet models. Rebates are provided for all customer classes. The City participates in this rebate program and offers it throughout the service area.

9.2 SUBMITTAL TABLES SUMMARY
This chapter does not include any submittal tables.

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10.0 CHAPTER 10 –PLAN ADOPTION
This chapter summarizes the process for adopting and submitting the UWMP as well as the ways the public can access the adopted UWMP.

10.1 PLAN COMPLETION TIMELINE
The 2025 UWMP guidebook allows for the reporting of either calendar year or fiscal year reporting. The City of Pittsburg has completed this 2025 UWMP based on calendar year reporting, and thus the data was collected through December 31, 2025, and evaluated as part of this reporting.

10.2 NOTICE OF PLAN PREPARATION
California Water Code
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.

The City provided notice to relevant stakeholders, summarized in Table 10-1, on December 17 th
,
2025. This notification was issued more than 60 days prior to the public hearing on the 2025 UWMP, meeting the required timeline.

Chapter Focus
This chapter outlines the procedures for adopting, submitting, and making the UWMP and WSCP publicly accessible. Transparent adoption and implementation ensure that customers and stakeholders are informed about water management practices and water supply reliability.

Public notices and hearings provide opportunities for review and input, while formal adoption incorporates the plans into the City’s management strategy, supporting informed decisionmaking and compliance with statutory requirements.

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Submittal Table 10-1 Retail: Notification to Cities and Counties Water Code Section 10621(b) and 10642

10.3 NOTICE OF PUBLIC HEARING
California Water Code
10642 …Prior to adopting either [the plan or water shortage contingency plan], 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 [see below].

California 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.

A notice of the public hearing was published in the local newspaper in accordance with Government Code 6066. Documentation of the public notice is included in Appendix C, and the draft 2025 UWMP was made available for review at various City facilities and on the City’s website.

10.4 PUBLIC HEARING AND ADOPTION
California Water Code
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.

California Government Code
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

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such positions, to ensure provision of information and services in the language of the non-English-speaking person.

Following the public review, the City held an informational public hearing on June 1, 2026, to present the 2025 UWMP and receive comments from the community. Subsequently, the City Council adopted the final 2025 UWMP at a meeting on _________, 2026. A copy of the adopting resolution is included in Appendix C.

10.5 PLAN SUBMITTAL
California Water Code
10621 (e) Each urban water supplier shall update and submit its 2025 plan to the department by July 1, 2026… 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.
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.

10.5.1 Submitting a UWMP to DWR
The UWMPA requires water agencies to submit a copy of the adopted 2025 UWMP to the Department of Water Resources within 30 days of adoption and no later than July 1, 2026.

Additionally, agencies must provide a copy of the adopted 2025 UWMP to all relevant stakeholders within 30 days of adoption.

10.5.2 Electronic Data Submittal
California Water Code
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.

The City of Pittsburg is required to submit the UWMP, along with associated Submittal Tables and any other relevant information, electronically through the WUEdata portal.

10.5.3 Submitting a UWMP to the California State Library Within 30 days of adoption, the City of Pittsburg shall submit a copy of the adopted 2025 UWMP, including the adopted WSCP, to the California State Library, either on a compact disc (CD) or as a hard copy.

10.5.4 Submitting a UWMP to Cities and Counties
Within 30 days of adoption, the City of Pittsburg shall provide a copy of the adopted 2025 UWMP, to each city or county to which the City delivers water.

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10.6 PUBLIC AVAILABILITY
California Water Code
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. 10645 (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.

The UWMPA requires water agencies to submit a copy of the adopted 2025 UWMP to the Department of Water Resources within 30 days of adoption and no later than July 1st, 2026.

Additionally, agencies must provide a copy of the adopted 2025 UWMP to all relevant stakeholders within 30 days of adoption.

10.7 DWR REVIEW
Following the submittal of this adopted 2025 UWMP, DWR reviews the report and the submitted workbook for data completeness. Following the review, DWR will issue a letter to the City of Pittsburg, summarizing the review results, and advising if the 2025 UWMP is deemed complete or if any items need clarifications.

10.8 SUBMITTAL TABLES SUMMARY
This chapter included the following submittal table(s):
• Table 10-1: Notification to Cities and Counties

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APPENDICES

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APPENDIX A
DWR Checklist

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This appendix shows the checklist of specific UWMP requirements. The California DWR asks the City to complete this checklist as part of their 2025 UWMP. In the Table A-1, the City of Pittsburg has entered information in the far-right column labeled “2025 UWMP Location,” and indicated the section number in their UWMP where a requirement is addressed.

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Table A-1 DWR Checklist
Retail
(x = required)
Wholesale
(x = require
d)
Order 2025 Guidebook
Location
Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submitta
l 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
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 Chapter 1
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
Section 2.1
& Table 2-1
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
Section 2.2
& Table 2-2
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
Section 2.3
& Table 2-3
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,
Section 8.12,
Section 10.2,
Section 10.3
& Section

10.4 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
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
Section 2.4
& Table 2-4
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

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Retail
(x = required)
Wholesale
(x = require
d)
Order 2025 Guidebook
Location
Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submitta
l Table
2025 UWMP
Location
x x 3 Chapter 3.0 10631(a) Describe the Supplier service area. System description n/a Section 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
Section 3.4
& Table 3-1
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 3.1.3
& Section

3.4 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 3.1.2
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
Section 4.2,
Table 4-1 &
Table 4-2
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
Section 4.3.1
& Table 4-5
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
Section 4.3.2
& Table 4-6
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
Section 4.2.6
& Table 4-3
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 4.2.4
& Table 4-3
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
Section 4.2.4
& Table 4-3
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 4.2.4
& Table 4-3
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 4.2.7

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Retail
(x = required)
Wholesale
(x = require
d)
Order 2025 Guidebook
Location
Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submitta
l Table
2025 UWMP
Location
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
Section 5.2
& Table 5-1
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 Section 6.1
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

7.2.1 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
Section 6.2
& Table 6-1
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

6.2.1.1 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

6.2.1.1

Page 143 of 937 ends

May 2026 City of Pittsburg
2025 Urban Water Management Plan
Retail
(x = required)
Wholesale
(x = require
d)
Order 2025 Guidebook
Location
Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submitta
l Table
2025 UWMP
Location
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

6.2.1.2 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
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
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 6.9
& Table 6-9
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 6.9
& Table 6-8
and 6-9
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 6.7 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
Section

6.5.2.1 &
Table 6-2
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
Section

6.5.2.2 &
Table 6-3
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
Section 6.5.4
& Table 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
Section 6.5.4
& Table 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
Section 6.5.4
& Table 6-4
and 6-5
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
Section 6.5.4
& Table 6-6

Page 144 of 937 ends

May 2026 City of Pittsburg
2025 Urban Water Management Plan
Retail
(x = required)
Wholesale
(x = require
d)
Order 2025 Guidebook
Location
Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submitta
l Table
2025 UWMP
Location
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 Section 6.5.4
x x 6.2 Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply. System supplies 6-7 Section 6.6
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
Section 6.8
& Table 6-7
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, O1B, O-1C,
and O-2
Section 6.11
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 7.1
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
Section 7.2
& Table 7-2,
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 7.3.1
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 7.3.2
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 7.1.3
& Table 7-5

Page 145 of 937 ends

Pittsburg City CouncilJune 15, 2026

Pittsburg City Council
June 15, 2026