American Canyon City Council
October 6, 2026

REGULAR CITY COUNCIL AGENDA
City Hall - Council Chambers
4381 Broadway St., Suite 201, American Canyon
October 6, 2026
6:30 PM

1. Ma ers Rela#ng to Public Employment: Public Employee Performance Evalua#ons (pursuant to Gov. Code section 54957)
Positions: Jason Holley, City Manager
Mayor: Pierre Washington
Vice Mayor: Mark Joseph
Councilmembers: Brando Cruz, Melissa Lamattina, David Oro 5:00 P.M. CLOSED SESSION
The mayor will call the meeng to order and conduct roll call. Following public comment on Closed Session items, the Council will immediately convene in Closed Session.

CALL TO ORDER - CLOSED SESSION

ROLL CALL - CLOSED SESSION

PUBLIC COMMENT - CLOSED SESSION ITEMS
This me is reserved for members of the public to address the City Council on Closed Session Business items only. Oral comments must be made in person and are limited to three (3) minutes per speaker.

MEETING RECESSED TO CLOSED SESSION
The Council will reconvene in Open Session at 6:30 p.m. The Council may reconvene in Closed Session at the conclusion of the meeting, if necessary, to address any remaining items.

BUSINESS - CLOSED SESSION
6:30 P.M. OPEN SESSION

CALL TO ORDER - OPEN SESSION

PLEDGE OF ALLEGIANCE

ROLL CALL - OPEN SESSION

CLOSED SESSION REPORT OUT / CONFIRMATION OF REPORTABLE ACTION

PROCLAMATIONS AND PRESENTATIONS
CITY COUNCIL MEETING AGENDA OCTOBER 6, 2026
1 2. Proclamation: Domestic Violence Awareness Month 2026

3. Proclamation: Filipino American History Month

4. Proclamation: California Water Professionals Appreciation Week

5. Minutes of September 15, 2026
Recommendation: Approve the minutes of the Regular City Council mee5ng held on September 15, 2026.

6. 2025 Urban Water Management Plan Update
Recommendation: Adopt a resolu5on approving the City of American Canyon’s 2025 Urban Water Management Plan (UWMP) and Water Shortage Con5ngency Plan (WSCP) and authorize its submi<al to the California Department of Water Resources (DWR) in accordance with the California Urban Water Management Planning Act. The UWMP adoption is statutorily exempt from CEQA review.

7. Public Art Mural Donation at the Mikolajcik Community Center Recommendation: Adopt a Minute Order approving the proposed public art mural dona5on and providing any direc5on the City Council deems appropriate regarding the mural design, location, installation, and implementation.

8. Q1 FY26/27 Capital Project Schedule Update
Recommendation: Receive this informational item and provide feedback.

PUBLIC COMMENT - ITEMS NOT ON THE AGENDA
This me is reserved for members of the public to address the City Council on items not appearing on the agenda that are within the Council's jurisdicon. Comments are limited to three (3) minutes per speaker. Pursuant to the Brown Act, the City Council is generally prohibited from discussing or taking action on items not listed on the agenda.

AGENDA CHANGES
The City Council may change the order of the agenda or request discussion of an item on the Consent Calendar. Members of the public may request discussion of a Consent Calendar item during Public Comment.

CONSENT CALENDAR

PUBLIC HEARINGS

BUSINESS

MANAGEMENT / STAFF ORAL REPORTS

CITY COUNCIL COMMENTS / COMMITTEE REPORTS
City Council may provide brief comments on ma-ers of public concern, announce ma-ers of public interest, and provide Council Committee reports. No action will be taken.

CITY COUNCIL MEETING AGENDA OCTOBER 6, 2026
2 9. City Council Committee Report - Vice Mayor Mark Joseph

10. City Council Committee Report - Mayor Pierre Washington

11. Future Agenda Items of Note

FUTURE AGENDA ITEM REVIEW
The City Council will review upcoming agenda items. Councilmembers may request that items be added to future City Council agendas.

ADJOURNMENT

CERTIFICATION
I, Taresa Geilfuss, City Clerk for American Canyon, do hereby declare that the foregoing agenda was posted in compliance with the Brown Act prior to the meeting date.

Taresa Geilfuss, City Clerk

PUBLIC PARTICIPATION
This mee#ng is a limited public forum. The City expects respecDul conduct from all par#cipants.

Offensive language or discriminatory remarks based on any protected classifica#on under federal, state, or local law will not be tolerated, and the speaker may be immediately disconnected.

Mee5ngs are conducted in person and are also available via Zoom. Mee5ngs are broadcast live on Napa Valley TV, the City’s website, and YouTube.

Zoom Link: Click here. Webinar ID: 847 1017 1711. Passcode: 123456. Phone-in: (408) 638-0968 Oral Comments: In person during Open/Closed Session, or via Zoom during Open Session only. Use “Raise Your Hand” during public comment periods only.

Written Comments: Submit via eComments on the City’s Mee5ngs & Agendas webpage. eComments close at 3:00 p.m. on the day of the meeting.

Agenda Materials: Posted 72 hours in advance at www.americancanyon.gov.

ADA: Requests for accommoda5ons or alterna5ve formats must be submi<ed at least three calendar days in advance to the City Clerk at 4381 Broadway, Suite 201, American Canyon, CA 94503 or [email protected].

Need Addi#onal Assistance? Contact the City Clerk by phone at (707) 647-4369 or by email at [email protected].

CITY COUNCIL MEETING AGENDA OCTOBER 6, 2026
3 CITY OF AMERICAN CANYON

PROCLAMATION
Domestic Violence Awareness Month – October 2026
WHEREAS, NEWS, Domestic Violence and Sexual Abuse Services is commemorating 45 years ofservice to survivors of domestic violence (DV) in Napa County, having opened the first confidential safe house on October 5th, 1981, and begun providing safety to those escaping abuse; and WHEREAS, every year since 1989, the United States Congress has proclaimed October as Domestic Violence Awareness Month (DVAM), renewing our Country’s commitment to standing against domestic violence and meeting the needs of survivors; and
WHEREAS, DVAM is about raising awareness and uplifting the needs, voices and experiences ofsurvivors.

This year’s national campaign of “With Survivors, Always” emphasizes a commitment to partnering with survivors, advocating for their rights, and providing continuous support, safety, and solidarity; and WHEREAS, DV is a public health concern that impacts the well-being and success of individual community members, as well as the community as a whole. Data shows that nearly 1 in 3 women and 1 in 4 men in the U.S. report experiencing severe physical violence from an intimate partner in their lifetime, while nearly half of U.S. adults have experienced psychological aggression, such as humiliating or controlling behaviors from their partner. DV can cause severe physical and emotional distress for survivors, who are more likely to experience suicidal thoughts and lose economic opportunities as a result of abuse. Children who witness abuse are more likely to experience abuse themselves and are often used as a means of controlling other family members, which can have lifelong impacts on their mental health. Aside from the physical and emotional trauma inflicted, DV contributes to over 10% of all intentional violent deaths (not including suicide) and costs America over 8 billion dollars a year; and WHEREAS, by observing October as DVAM we show that our community is committed to supporting survivors and working toward the prevention of DV among future generations; and WHEREAS, NEWS provides services to over 1,700 people in Napa County, including direct client and shelter services 24 hours a day, 7 days a week; and
NOW, THEREFORE, I, Pierre Washington, on behalf of the City Council, do hereby proclaim October 2026 as “Domestic Violence Awareness Month”, and encourage all residents of American Canyon to honor domestic violence survivors and those who serve them this month and throughout the year.

Dated: October 6, 2026
Pierre Washington, Mayor
4 CITY OF AMERICAN CANYON

PROCLAMATION
Filipino American History Month - October 2026
WHEREAS, in 2009, the United States Congress recognized October as Filipino American History Month in the United States; and
WHEREAS, Filipino Americans are the second-largest Asian American group in the nation and the thirdlargest ethnic group in California; and WHEREAS, the celebration of Filipino American History Month in October commemorates the first recorded presence of Filipinos in the continental United States, which occurred on October 18, 1587, when “Luzones Indios” came ashore from the Spanish galleon Nuestra Señora de Esperanza and landed at what is now Morro Bay, California; and
WHEREAS, through the development of these three institutions – Filipino American Studies (FAS), Filipino American National Historical Society (FANHS), and Filipino American History Month (FAHM) – we recognize how Filipino Americans have initiated collective, grassroots efforts to ensure that their voices are heard, their experiences are recognized, and their histories are told; and WHEREAS, we acknowledge these major historical markers in our community, and we encourage Filipino Americans and their allies across the country to collectively celebrate Filipino American History Month with these legacies in mind; and
WHEREAS, we recognize the many ways that Filipino Americans have made significant economic contributions and have had a profound positive influence on our community through their strong commitment to family, faith, education, hard work, culture, and service; and WHEREAS, in acknowledging the many legacies created by Filipino Americans across the United States and in American Canyon, we encourage our community members to be enriched by the cultural contributions of our Filipino American friends and neighbors for many decades to come.

NOW, THEREFORE, I, Pierre Washington, on behalf of the City Council, do hereby proclaim October 2026 as Filipino American History Month in the City of American Canyon.

Dated: October 6, 2026 ________________________________ Pierre Washington, Mayor
5 CITY OF AMERICAN CANYON

PROCLAMATION
CALIFORNIA WATER PROFESSIONALS’ APPRECIATION WEEK
OCTOBER 3-11, 2026
WHEREAS, California Water Professionals Appreciation Week, observed October 3 through October 11, 2026, was established in 2017 to recognize the essential role of water professionals and public agencies that provide safe, reliable water, wastewater, and recycled water services throughout California, increase public awareness of the value of these services, and encourage future generations to pursue careers in the water industry; and WHEREAS, the City of American Canyon Public Works Water and Wastewater teams operate and maintain the City’s drinking water, water distribution, wastewater collection, and water reclamation systems, while the Parks Maintenance team supports these efforts by managing recycled water use within City parks and landscaped areas, promoting beneficial reuse and conservation of potable water supplies; and WHEREAS, these dedicated professionals—including treatment operators, distribution and collection personnel, maintenance workers, supervisors, managers, engineers, environmental professionals, and laboratory and technical staff—possess the specialized knowledge, training, certifications, and commitment necessary to safely and reliably operate and maintain the City’s critical water infrastructure; and WHEREAS, water professionals work around the clock to protect public health and water quality, maintain infrastructure, respond to emergencies, meet regulatory requirements, conserve resources, and provide services essential to the health, safety, economic vitality, and resilience of the American Canyon community; NOW, THEREFORE, I, Mayor Pierre Washington, on behalf of the City Council of American Canyon, do hereby proclaim October 3 through October 11, 2026, as California Water Professionals Appreciation Week in the City of American Canyon and recognize the Public Works Water and Wastewater teams and Parks Maintenance staff for their professionalism, expertise, and dedication to serving the American Canyon community.

Date: October 6, 2026
______________________________
Pierre Washington, Mayor
6 CITY OF AMERICAN CANYON

REGULAR CITY COUNCIL MEETING

ACTION MINUTES
September 15, 2026
4:30 P.M. CLOSED SESSION

CALL TO ORDER - CLOSED SESSION
The City Council meeting was called to order at 4:30 p.m.

ROLL CALL - CLOSED SESSION

Present: Councilmember Brando Cruz, Councilmember Melissa Lamattina, Councilmember David Oro, Vice Mayor Mark Joseph, Mayor Pierre Washington

Absent: None

PUBLIC COMMENT - CLOSED SESSION ITEMS
Mayor Washington opened a public comment period for Closed Session Items. Written comments: none. Oral comments: none. The public comment period was closed.

MEETING RECESSED TO CLOSED SESSION

BUSINESS - CLOSED SESSION

1. Matters Relating to Public Employment: Public Employee Performance Evaluations (pursuant to Gov. Code section 54957) Position: Jason Holley, City Manager 6:30 P.M. OPEN SESSION

CALL TO ORDER - OPEN SESSION
The City Council meeting was called to order at 6:37 p.m.

PLEDGE OF ALLEGIANCE
The Pledge of Allegiance was recited.

ROLL CALL - OPEN SESSION

Present: Councilmember Brando Cruz, Councilmember Melissa Lamattina, Councilmember David Oro, Vice Mayor Mark Joseph, Mayor Pierre Washington

Absent: None
7 CLOSED SESSION REPORT OUT / CONFIRMATION OF REPORTABLE ACTION A report on Closed Session and confirmation of reportable action was given by City Attorney Matthew Summers.

PROCLAMATIONS AND PRESENTATIONS

2. Proclamation: National Community Planning Month 2026 Mayor Washington announced the National Community Planning Month 2026 proclamation. It was received by Community Development Director Brent Cooper with other Community Development staff.

PUBLIC COMMENT - ITEMS NOT ON THE AGENDA
Mayor Washington opened a public comment period. Written comments: none. Oral comments:

Jacqueline Buresl was called to speak; LeAnn Tholcke was called to speak; Sophie Borgeand was called to speak; Hugh Marquez was called to speak; Karen Fritz was called to speak. The public comment period was closed.

AGENDA CHANGES
There were no changes to the agenda.

CONSENT CALENDAR
Action: Motion to adopt CONSENT CALENDAR made by Vice Mayor Mark Joseph, seconded by Councilmember David Oro, and CARRIED by roll call vote.

Yea: Councilmember Brando Cruz, Councilmember Melissa Lamattina, Councilmember David Oro, Vice Mayor Mark Joseph, Mayor Pierre Washington Nay: None
Abstain: Councilmember David Oro abstains from matters 5, 7 and 8.

Absent: None

3. City Council Minutes of September 1, 2026
Action: Approved the minutes of the Regular City Council meeting held September1, 2026.

4. Transportation Impact Fee Nexus Study and Fee Program Update Agreement Action: Adopted Resolution 2026-68 authorizing a $156,000 budget increase in the Traffic Impact Fee (TIF) Fund 320 and authorizing an agreement (Agreement 2026-A178) with Fehr & Peers in an amount not to exceed $156,000 to prepare a comprehensive update of American Canyon's transportation impact fee program, including the impact fee nexus study, capital improvement project list, and fee schedules.
8 5. Approve an Addendum to the Certified General Plan Program Environmental Impact Report (Program EIR) (SCH No. 2022070038) and Conduct Final Reading and Adoption of the Hess/Laird Territory Special Study Pre-Zoning Ordinance
Action: Waived final reading, read by title only, and adopted Ordinance 2026-02 to approve Special Study Pre-Zoning for the Hess/Laird Territory consistent with the General Plan (American Canyon Municipal Code Chapter 19.50) and approve an Addendum to the Certified General Plan Program Environmental Impact Report, finding the Ordinance consistent with the General Plan Program EIR.

6. 2026 Biennial City Conflict of Interest Code
Action: Adopted Resolution 2026-69 approving the 2026 Conflict of Interest Code as amended, authorizing future updates by Resolution, and authorizing the City Clerk to complete and file the 2026 Local Biennial Notice.

7. Approve an exemption from environmental review under the California Environmental Quality Act (CEQA) and conduct Final Reading and Adoption of the Accessory Animal Husbandry and Livestock Keeping Regulations Zoning Code Amendment Action: Waived final reading, read by title only, and adopted Ordinance 2026-03 to amend American Canyon Municipal Code Sections 19.05.090, 19.05.100, 19.10.040, and 19.31.020 to remove the prohibition on swine, limit livestock keeping to the Residential Estate (RE) Zoning district, and remove obsolete General Plan policy references.

8. Approve an exemption from environmental review under the California Environmental Quality Act (CEQA) and conduct Final Reading and Adopt the Accessory Dwelling Unit, Density Bonus, and Inclusionary Housing Ordinance Update
Action: Waived final reading, read by title only, and adopted Ordinance 2026-04 to amend the American Canyon Municipal Code to update Chapter 19.27 (Density Bonus), Chapter 19.28 (Inclusionary Housing), and Chapter 19.39 (Accessory Dwelling Units) consistent with current State laws and Housing Element Implementation Measures.

9. Open Gov Budgeting, Financial Reporting, and Transparency Platform Software Agreement Action: Adopted Resolution 2026-70 to enter into an agreement (Agreement No. 2026-A179) with OpenGov for a budgeting and transparency software solution.

10. Approval of a Five-Year Agreement with Govinity, Inc. for Legislative and Public Meeting Management Software Services.

Action: Adopted Resolution 2026-71 approving a five-year agreement (Agreement No. 2026- A180) with Govinity, Inc. for legislative and public meeting management software services in an amount not to exceed $182,500 and authorizing the City Manager to execute the necessary documents.

PUBLIC HEARINGS
There were no public hearing matters.
9 BUSINESS

11. Water Treatment Plant Filter Media Replacement and Underdrain Repair Project (WA23- 0200)
Council received a Water Treatment Plant Filter Media Replacement and Underdrain Repair Project staff report from Assistant Public Works Director Norman Woods. Mayor Washington opened a public comment period. Written comments: none. Oral comments: Hugh Marquez was called to speak. The public comment period was closed.

Action: Motion to adopt Resolution 2026-72 amending the FY2026-27 Capital Budget and increasing the WA23-0200 project budget from $350,000 to $600,000; awarding a Construction Agreement (Agreement 2026-A181) to ERS Industrial, Inc. in the amount of $492,800; and authorizing the City Manager to approve and execute contract change orders in an amount not to exceed the $600,000 project budget, in conjunction with the Water Treatment Plant Filter Media Replacement and Underdrain Repair Project (WA23-0200) made by Councilmember Brando Cruz, seconded by Vice Mayor Mark Joseph, and CARRIED by roll call vote.

Yea: Councilmember Brando Cruz, Councilmember Melissa Lamattina, Councilmember David Oro, Vice Mayor Mark Joseph, Mayor Pierre Washington Nay: None
Abstain: None

Absent: None

12. Melvin Road Pavement and Sewer Improvements
Council received a Melvin Road Pavement and Sewer Improvements staff report from Public Works Director Erica Ahmann Smithies. Mayor Washington opened a public comment period.

Written comments: none. Oral comments: none. The public comment period was closed.

Action: Motion to adopt Resolution 2026-73 amending the Fiscal Year 2026-27 Capital Budget from $115,000 to $175,000 for the Melvin Road Pavement Rehabilitation Project (TR27-0100) and authorizing the City Manager to enter into an agreement (Agreement No. 2026-A-182) with Coastland ' DCCM for an amount not to exceed $194,446 for design services for the Melvin Road Pavement Rehabilitation Project (TR27-0100) and Melvin/Wilson Way Main Repair Project (WW27-0400) made by Vice Mayor Mark Joseph,seconded by Councilmember Melissa Lamattina, and CARRIED by roll call vote.

Yea: Councilmember Brando Cruz, Councilmember Melissa Lamattina, Councilmember David Oro, Vice Mayor Mark Joseph, Mayor Pierre Washington Nay: None
Abstain: None

Absent: None
10 13. Support and Funding Commitment for State Route 29 Corridor Improvement Project Council received a State Route 29 Corridor Improvement Project staff report and presentation from Napa Valley Transportation Authority Program Manager - Engineer Grant Bailey, P.E., with Executive Director Danielle Schmitz. Mayor Washington opened a public comment period.

Written comments: none. Oral comments: Sindy Biederman was called to speak; Sophie Borgeand was called to speak; Tonya West was called to speak; Barbara Miles was called to speak; Karina Servente was called to speak; Hugh Marquez was called to speak; Rob Hall was called to speak; Lisa Chu was called to speak; Albert Donaldson was called to speak; Karen Fritz was called to speak; Ruby Profit was called to speak. The public comment period was closed.

Action: Motion to adopt Resolution 2026-74 supporting the American Canyon State Route 29 Corridor Improvement Project and committing up to $5,000,000 in funding for future project phases as amended. made by Vice Mayor Mark Joseph, seconded by Councilmember Brando Cruz, and CARRIED by roll call vote.

Yea: Councilmember Brando Cruz, Councilmember Melissa Lamattina, Councilmember David Oro, Vice Mayor Mark Joseph, Mayor Pierre Washington Nay: None
Abstain: None

Absent: None

MANAGEMENT / STAFF ORAL REPORTS
Council received oral updates from Deputy City Manager Alexandra Ikeda.

CITY COUNCIL COMMENTS / COMMITTEE REPORTS
The mayor and council members provided oral reports and announced items of community interest.

14. City Council Committee Report - Mayor Pierre Washington

FUTURE AGENDA ITEM REVIEW
Future agenda items were reviewed.

15. Future Agenda Items of Note

ADJOURNMENT
The City Council meeting was adjourned in memory of Nelia Medeiros at 8:24 p.m.

Respectfully Submitted,
_____________________________________
Taresa Geilfuss, CMC, City Clerk
11 CITY COUNCIL AGENDA
OCTOBER 6, 2026

STAFF REPORT

BUSINESS
ITEM NUMBER: 6.

TITLE
2025 Urban Water Management Plan Update

RECOMMENDATION
Adopt a resolu(on approving the City of American Canyon’s 2025 Urban Water Management Plan (UWMP) and Water Shortage Con(ngency Plan (WSCP) and authorize its submi3al to the California Department of Water Resources (DWR) in accordance with the California Urban Water Management Planning Act. The UWMP adoption is statutorily exempt from CEQA review.

CONTACT
Erica Ahmann Smithies, P.E., Public Works Director
Norman Woods, Assistant Public Works Director
Dominic Patrick, Water Systems Manager

BACKGROUND & ANALYSIS
The California Urban Water Management Planning Act (Water Code Sec(on 10610 et seq.) requires urban water suppliers that provide water for municipal purposes to more than 3,000 customers or supply more than 3,000 acre-feet of water annually to prepare and adopt an Urban Water Management Plan (UWMP) every five years. As an urban water supplier under the Act, the City of American Canyon is required to update its UWMP to maintain compliance with state law and support long-term water resource planning.

The City adopted its previous UWMP in 2020 and Water Shortage Con(ngency Plan submi3ed it to the California Department of Water Resources (DWR) on January 18, 2023. The Dra@ 2025 UWMP (A3achment 2) updates the City's long-range water supply and demand projec(ons, water reliability assessment, water shortage con(ngency planning, and water conserva(on strategies in accordance with current statutory requirements, including the Urban Water Management Planning Act and the Water Conservation Act of 2009.

The Dra@ 2025 UWMP was prepared by City staff with assistance from qualified water resources consultants and in coordina(on with regional and state agencies. Prepara(on of the plan followed applicable state requirements and u(lized the California Department of Water Resources' 2025 Urban Water Management Plans Guidebook for Urban Water Suppliers (January 2026). 12 The updated plan reflects current water supply condi(ons, demand forecasts, popula(on and land use projec(ons, and water conserva(on requirements. The UWMP also incorporates the Water Shortage Con(ngency Plan and updated technical analyses and planning assump(ons since the 2020 UWMP to ensure the City's water management strategies remain consistent with current regula(ons, available data, and long-term reliability objec(ves. Overall, the 2025 UWMP confirms the City's con(nued commitment to providing a reliable and sustainable water supply while mee(ng state planning and conservation requirements.

State law requires public review and opportuni(es for community par(cipa(on before adop(on of the UWMP. Consistent with Water Code Sec(ons 10608.26 and 10642 and Government Code Sec(on 6066, the City made the Dra@ 2025 UWMP available for public inspec(on and published no(ces of the public hearing which will occur on October 6, 2026. The public review process encouraged par(cipa(on from residents, businesses, public agencies, and stakeholders represen(ng the diverse social, cultural, and economic interests within the City's service area. The City also invited public comment on the proposed plan, including the City's approach to complying with the Water Conserva(on Act of 2009 and the poten(al economic impacts associated with its implementation.

Following review of the Dra@ 2025 UWMP, the administra(ve record, and all public and agency comments received, staff recommends that the City Council adopt the 2025 Urban Water Management Plan and Water Shortage Con(ngency Plan. Adop(on of the plan sa(sfies the City's statutory obliga(ons under state law and provides a dated framework for managing the City's water resources over the next five-year planning.

COUNCIL PRIORITY PROGRAMS AND PROJECTS
Infrastructure: "Develop and maintain infrastructure resources to support sustainable growth."

FISCAL IMPACT
The recommended ac(on has no fiscal impact to the City. No addi(onal appropria(ons or expenditures are required as a result of this action.

ENVIRONMENTAL REVIEW
15378(b) - The ac(on is not a "Project" subject to the California Environmental Quality Act ("CEQA") because it does not qualify as a "Project" under Public Resources Code Sec(ons 21065 and 21080 and in Sec(on 15378(b) of Title 14 of the California Code of Regula(ons. Further, the prepara(on and adop(on of the Urban Water Management Plan under Water Code Sec(on 10652 is statutorily exempt from California Environmental Quality Act (CEQA) environmental review (Sec(on 15282(v) CEQA Guidelines).

COMMUNICATION
Level 0: No Further Public Communication Needed
The Urban Water Management Plan is classified as a Level 0 Communica(ons Plan, as all applicable 13 State-mandated public no(ce, review, and hearing requirements have been followed. Public informa(on and suppor(ng materials have been provided through the required public process and City Council agenda materials. No addi(onal communica(ons or outreach ac(vi(es are proposed at this time.

ATTACHMENTS:

1. Resolution: 2025 UWMP and WSCP
Exhibit A - 2025 UWMP Administrative Draft
Exhibit B - Water Shortage Contingency Plan
14 RESOLUTION NO. 2026 - XX
A RESOLUTION APPROVING THE CITY OF AMERICAN CANYON’S 2025 URBAN WATETR MANAGEMENT

PLAN (UWMP) AND WATER SHORTAGE CONTINGENCY PLAN AND AUTHORIZE ITS SUBMITTAL TO THE

CALIFRONIA DEPARTMENT OF WATER RESOURCES IN ACCORDANCE WITH THE CALIFORNIA URBAN WATER MANAGEMENT PLANNING ACT.

WHEREAS, the California Urban Water Management Planning Act, Water Code section 10610 et seq. (the Act) mandates that every urban water supplier providing water for municipal purposes to more than 3,000 customers or supplying more than 3, 000 acre-feet of water annually, prepare and adopt an updated Urban Water Management Plan (UWMP) and Water Shortage Contingency Plan (WSCP) at least once every five years; and
WHEREAS, the City of American Canyon is an urban water supplier for the purposes of the Act, and approved and adopted its most recent 2020 UWMP and WSCP and submitted that UWMP to the California Department of Water Resources on January 18, 2023; and WHEREAS, the City, in accordance with applicable law including requirements of the Act and the Water Conservation Act of 2009 has prepared its 2025 UWMP and WSCP and has undertaken certain agency coordination, public notice, public involvement and outreach, public comment, and other procedures in relation to its 2025 UWMP and WSCP; and
WHEREAS, the City has prepared its 2025 UWMP and WSCP with its own staff, with the assistance of consulting professionals, and in cooperation with other governmental agencies and has utilized and relied upon industry standards and the expertise of industry professionals in preparing its UWMP and WSCP has utilized and relied upon the Department of Water Resources 2025 Urban Water Management Plans Guidebook for Urban Water Suppliers (January 2026); and WHEREAS, in accordance with applicable law, including Water Code sections 10608. 26 and 10642, and Government Code section 6066, the City made its Draft 2025 UWMP and WSCP available for public inspection, and caused to be published within the jurisdiction of the City at least two notices of public hearing regarding the City' s 2025 UWMP and WSCP, which publication dates included September 1, 2026, and October 6, 2026.

WHEREAS, pursuant to the public hearing on the 2025 UWMP and WSCP the City encouraged the active involvement of diverse social, cultural, and economic elements of the population within the City's service area with regard to the preparation and adoption of the 2025 UWMP and WSCP, encouraged input by members of the public and any other interested party regarding all aspects of the 2025 UWMP and WSCP, encouraged community input regarding the City' s plan for complying with the Water Conservation Act of 2009, considered the economic impacts of complying with the Water Conservation Act of 2009; and
WHEREAS, the City Council has reviewed and considered the purposes and requirements of the Urban Water Management Planning Act and the Water Conservation Act of 2009, the contents of the 2025 UWMP, the documentation contained in the administrative record in support of the 2025 UWMP, and all public and agency input received with regard to the 2025 UWMP, and has determined that the factual analyses and conclusions set forth in the 2025 UWMP and WSCP are supported by substantial evidence. 15 WHEREAS, 15378(b) - The action is not a "Project" subject to the California Environmental Quality Act ("CEQA") because it does not qualify as a "Project" under Public Resources Code Sections 21065 and 21080 and in Section 15378(b) of Title 14 of the California Code of Regulations.

NOW, THEREFORE, BE IT RESOLVED that the City Council hereby adopts the 2025 Urban Water Management Plan and Water Shortage Contingency Plan, with the intention of revising said plan at such times as may be appropriate to ensure effective water management program.

PASSED, APPROVED and ADOPTED at a regularly scheduled meeting of the City Council of the City of American Canyon held on the 6th day of October, 2026 by the following vote:

AYES:

NOES:

ABSTAIN:

ABSENT:
________________________________
Pierre Washington, Mayor
ATTEST: APPROVED AS TO FORM:
______________________________ ______________________________ Taresa Geilfuss, CMC, City Clerk Matthew T. Summers, City Attorney Attachments:

Exhibit A – City of American Canyon 2025 Urban Water Management Plan Exhibit B – Water Shortage Contingency Plan
16 ADMINISTRATIVEDRAFT/JUNE2026

URBANWATER

MANAGEMENTPLAN
2025

PREPAREDFORTHE

CITYOFAMERICANCANYON
17 City of American Canyon
2025 Urban Water Management Plan

CONTACT SHEET
Date plan submitted to the Department of Water Resources: XX/XX/XXXX Name of persons preparing this plan:

Dominic Patrick, Water Systems Manager
City of American Canyon
250 Kirkland Ranch Road
American Canyon, CA 94503
Phone: (707) 647-5353
Email: [email protected]
Norman Woods, Assistant Director of Public Works
City of American Canyon
4381 Broadway Street, Suite 201
American Canyon, CA 94503
Phone: (707) 980-3304
Email: [email protected]
Brianna Barton, Project Manager
Carollo Engineers, Inc.
2520 Venture Oaks Way, Suite 400
Sacramento, CA 95833
Phone: (916) 576-4753
Email: [email protected]
The Water supplier is a: City.

The Water supplier is a: Retailer.

Utility services provided by the water supplier include: Water, Wastewater. 18 2025 Urban Water Management Plan
June 2026 / ADMINISTRATIVE DRAFT
This document is released for the purpose of information exchange review and planning only under the authority of Brianna Barton, June 3, 2026, California C - 86633. 19 2025 URBAN WATER MANAGEMENT PLAN
JUNE 2026 / ADMINISTRATIVE DRAFT / CAROLLO
CITY OF AMERICAN CANYON i
pw://Carollo/CA/American Canyon/204216-000000/03 Reports and Studies/02 Deliverables/Urban Water Management Plan/2025_UWMP.docx Contents
CHAPTER 1 INTRODUCTION AND LAY DESCRIPTION

1.1 Lay Description 1-1

1.2 Background and Purpose 1-2

1.2.1 Previous Urban Water Management Plan 1-2

1.3 Urban Water Management Planning Act and the California Water Code 1-2

1.4 New Requirements Since the 2020 UWMP 1-4

1.5 Demonstration of Reduced Delta Reliance 1-4

1.6 Report Organization 1-5
CHAPTER 2 PLAN PREPARATION

2.1 Basis for Plan Preparation 2-1

2.1.1 Public Water Systems 2-1

2.2 Individual Planning and Compliance 2-2

2.3 Calendar Year and Units of Measure 2-2

2.4 Coordination and Outreach 2-3

2.4.1 Wholesale and Retail Coordination 2-3

2.4.2 Coordination with Other Agencies and the Community 2-3

2.4.3 Notice to Cities and Counties 2-4
CHAPTER 3 SYSTEM DESCRIPTION

3.1 General Description 3-1

3.1.1 Description of Transmission, Treatment, and Distribution Facilities 3-1

3.2 Service Area Climate 3-3

3.3 Service Area Population and Demographics 3-4

3.3.1 Service Area Population 3-4

3.3.2 Other Social, Economic and Demographic Factors 3-5

3.4 Land Uses Within Service Area 3-6

3.5 Climate Change 3-8

3.5.1 EPA Climate Resilience Evaluation and Awareness Tool 3-8

3.5.2 Cal-Adapt Extended Drought Scenarios Tool 3-8

3.5.3 Cal-Adapt Wildfire Tool 3-9
CHAPTER 4 WATER USE CHARACTERIZATION

4.1 Non-Potable Versus Potable Water Use 4-1

4.2 Past, Current, and Projected Water Use by Sector 4-1

4.3 Estimating Future Water Savings 4-5

4.4 Distribution System Water Losses 4-5

4.4.1 Progress Toward Meeting the Water Loss Performance Standard 4-6

4.5 Water Use for Lower Income Households 4-8

4.6 Climate Change Considerations 4-8
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CHAPTER 5 SB X7-7 BASELINES, 2020 TARGETS, AND 2025 REPORTING

5.1 Baselines 5-1

5.2 Service Area Population 5-1

5.3 Gross Water Use 5-2

5.4 Baseline Daily Per Capita Water Use 5-2

5.5 Targets Summary 5-2

5.6 Target Progress Reporting 5-2
CHAPTER 6 WATER SUPPLY CHARACTERIZATION

6.1 Purchased or Imported Water 6-1

6.1.1 State Water Project 6-1

6.1.2 City of Vallejo 6-2

6.1.3 Other Imported Water Sources 6-2

6.2 Groundwater 6-3

6.3 Surface Water 6-4

6.4 Stormwater 6-4

6.5 Wastewater and Recycled Water 6-4

6.5.1 Recycled Water Coordination 6-4

6.5.2 Wastewater Collection, Treatment Systems, and Disposal 6-5

6.5.3 Recycled Water System Description 6-8

6.5.4 Recycled Water Beneficial Uses 6-8

6.5.5 Actions to Encourage and Optimize Future Recycled Water Use 6-10

6.6 Desalinated Water Opportunities 6-13

6.7 Exchanges or Transfers 6-13

6.7.1 Exchanges 6-13

6.7.2 Transfers 6-13

6.7.3 Emergency Interties 6-13

6.8 Future Water Projects 6-14

6.9 Summary of Existing and Planned Sources of Water 6-16

6.10 Climate Change Impacts to Supplies 6-20

6.11 Energy Intensity 6-20

6.11.1 Potable Water 6-21

6.11.2 Wastewater and Recycled Water 6-21

6.11.3 Energy Savings Contract 6-21
CHAPTER 7 WATER SERVICE RELIABILITY AND DROUGHT RISK

ASSESSMENT

7.1 Introduction 7-1

7.2 Constraints of Water Sources 7-1

7.2.1 Water Supply Quality 7-2

7.2.2 Climate Change 7-2

7.2.3 Potential Supply Constraints 7-2

7.2.4 Potential Alternative Sources 7-3
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7.3 Water Supply Reliability by Type of Year 7-4

7.3.1 Basis of Water Year Data 7-4

7.4 Water Service Reliability Assessment 7-5

7.4.1 Normal Year 7-5

7.4.2 Single-Dry-Year 7-6

7.4.3 Five-Consecutive-Year Drought 7-6

7.4.4 Hazard Mitigation Plan 7-9

7.5 Drought Risk Assessment 7-9

7.6 Regional Supply Reliability 7-12
CHAPTER 8 WATER SHORTAGE CONTINGENCY PLAN

8.1 WSCP Overview 8-1

8.2 Stages of Action 8-1

8.3 Supply Augmentation 8-2

8.4 Demand Reduction 8-2

8.5 Annual Water Supply and Demand Assessment Procedures 8-5

8.5.1 Timeline 8-5

8.5.2 Decision-Making Process 8-5

8.5.3 Key Data and Methodologies 8-6

8.6 Catastrophic Supply Intervention 8-8

8.7 Hazard Mitigation Plan 8-8

8.8 Revenue and Expenditure Impacts 8-8

8.8.1 Use of Financial Reserves 8-9

8.8.2 Other Measures 8-9

8.9 Monitoring and Reporting 8-9

8.10 WSCP Refinement Procedures 8-9

8.11 WSCP Adoption, Submittal, and Availability 8-10
CHAPTER 9 DEMAND MANAGEMENT MEASURES

9.1 Water Waste Prevention Ordinances 9-1

9.1.1 Implementation over the Past Five Years 9-1

9.1.2 Planned Implementation 9-2

9.2 Metering 9-2

9.2.1 Implementation Over the Past Five Years 9-2

9.2.2 Planned Implementation 9-2

9.3 Conservation Pricing 9-2

9.3.1 Implementation Over the Past Five Years 9-2

9.3.2 Planned Implementation 9-3

9.4 Public Education and Outreach 9-3

9.4.1 Implementation Over the Past Five Years 9-3

9.4.2 Planned Implementation 9-3

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9.5.1 Implementation Over the Past Five Years 9-3

9.5.2 Planned Implementation 9-4

9.6 Water Conservation Program Coordination and Staffing Support 9-4

9.6.1 Implementation Over the Past Five Years 9-4

9.6.2 Planned Implementation 9-4

9.7 Other Demand Management Measures 9-4

9.7.1 Efficiency and Rebates 9-4

9.7.2 Administrative Policies 9-5

9.8 Planned Implementation to Achieve Water Use Targets 9-5 CHAPTER 10 PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION

10.1 Inclusion of All 2025 Data 10-1

10.2 Notice of Public Hearing 10-1

10.2.1 Notice to Cities and Counties 10-1

10.2.2 Notice to the Public 10-2

10.2.3 Notice to Agencies and Organizations 10-2

10.3 Public Hearing and Adoption 10-3

10.3.1 Adoption 10-3

10.4 Plan Submittal 10-4

10.4.1 Submission to DWR 10-4

10.4.2 Electronic Data Submission 10-4

10.4.3 Submission to the California State Library 10-4

10.4.4 Submission to Cities and Counties 10-4

10.5 Public Availability 10-4

10.6 Amending and Adopted UWMP 10-4
Appendices

APPENDIX A REDUCED DELTA RELIANCE

APPENDIX B OUTREACH DOCUMENTS
APPENDIX C SB X7-7 VERIFICATION AND COMPLIANCE FORMS
APPENDIX D SITES RESERVOIR 2024 ANNUAL PROGRESS REPORT AND DOI PRESS RELEASE

APPENDIX E ENERGY INTENSITY FORMS
APPENDIX F 2024 CONSUMER CONFIDENCE REPORT
APPENDIX G CITY MUNICIPAL CODE WATER CONSERVATION PLAN CHAPTER 13.14 APPENDIX H CITY MUNICIPAL CODE WATER EFFICIENT LANDSCAPING CHAPTER 16.14 APPENDIX I CITY MUNICIPAL CODE WATER EFFICIENT LANDSCAPING CHAPTER 19.22

APPENDIX J WATER AND SEWER RATE SCHEDULES
APPENDIX K 2025 UWMP CHECKLIST

APPENDIX L CITY ADOPTION RESOLUTIONS
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Tables
Table 1-1 Applicable Changes Since 2020 UWMP 1-4
Table 2-1 Public Water Systems 2-1
Table 2-2 Plan Identification 2-2
Table 2-3 Supplier Identification 2-2
Table 2-4 Water Supplier Information Exchange 2-3
Table 3-0 Climate Characteristics 3-3
Table 3-1 Population – Current and Projected 3-4
Table 3-2 Extended Drought Scenario Projections 3-9
Table 3-3 Summary of Projected Wildlife Area Burned 3-10 Table 4-0 Water Deliveries 4-1
Table 4-1 Total Uses for Potable and Non-Potable Water 4-2 Table 4-2 Total Uses for 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 4-5
Table 4-5 Water Loss Audit Reporting 4-6
Table 4-6 Progress Towards 2028 Water Loss Standard 4-7 Table 5-1 SB X7-7 2020 Target Progress 5-3
Table 6-1 Groundwater Volume Pumped 6-4
Table 6-2 Wastewater Collected Within Service Area 6-5
Table 6-4 Recycled Water Direct Beneficial Uses Within Service Area 6-9 Table 6-5 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual 6-10 Table 6-6 Methods to Encourage Future Recycled Water Use 6-12 Table 6-7 Expected Future Water Supply Projects or Programs 6-15 Table 6-8 Water Supplies - Actual 6-17
Table 6-9 Water Supplies - Projected 6-19
Table 7-1 Basis of Water Year Data (Reliability Assessment) 7-5 Table 7-2 Normal Year Supply and Use Comparison 7-5
Table 7-3 Single Dry Year Supply and Use Comparison 7-6 Table 7-4 Multiple Dry Years Supply and Use Comparison 7-7 Table 8-1 Cross Reference for Standard vs. Supplier Shortage Levels 8-2 Table 8-2 Supply Augmentation and Other Actions 8-1
Table 8-3 Demand Reduction Actions 8-3
Table 10-1 Notification to Cities and Countries 10-2
Figures
Figure 3-1 Water Service Boundary and Infrastructure Location Map 3-2 Figure 3-2 Land Use Map 3-7
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Abbreviations
AB Assembly Bill
AF acre-feet
AFY acre-feet per year
ADU accessory dwelling unit
AMI Advanced Metering Infrastructure
AWWA American Water Works Association
BMP best management practice
BSPP Barker Slough Pumping Plant
Carollo Carollo Engineers, Inc.

CII commercial, industrial, and institutional
CIMIS California Irrigation Management Information System City City of American Canyon
CREAT Climate Resilience Evaluation and Awareness Tool
CWC California Water Code
DDW Division of Drinking Water
Delta Sacramento-San Joaquin Delta
DIM dedicated irrigation meter
DOF California Department of Finance
DOI United States Department of Interior
DMM demand management measure
DRA drought risk assessment
DWR California Department of Water Resources
EPA United States Environmental Protection Agency
ERP emergency response plan
ETo evapotranspiration
ETSSA Extra Territorial Sewer Service Area
F degrees Fahrenheit
FCWCD Flood Control and Water Conservation District
GHG greenhouse gas
gpad gallons per acre per day
gpcd gallons per capita per day
GPSCD gallons per service connection per day
IRWMP Integrated Regional Water Management Plan
ITP Incidental Take Permit
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kWh kilowatt hours
MFR multi-family residential
MG million gallons
mgd million gallons per day
MWELO Model Water Efficient Landscape Ordinance
NA not applicable
NBA North Bay Aqueduct
No. number
NSD Napa Sanitation District
PVC polyvinyl chloride
RCP Representative Concentration Pathway
RHNA Regional Housing Needs Assessment
RUWMP Regional Urban Water Management Plan
SacWAM Sacramento Water Allocation Model
SB Senate Bill
sf square foot
SFR single-family residential
SWP State Water Project
SWRCB State Water Resources Control Board
UWMP Urban Water Management Plan
UWMPA Urban Water Management Planning Act
UWUO urban water use objective
WDR waste discharge requirements
WRF Water Reclamation Facility
WRF Water Recycling Facility
WSCP Water Shortage Contingency Plan
WTP Water Treatment Plant
WWTP Wastewater Treatment Plant
ZWF zero water footprint
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CHAPTER 1 INTRODUCTION AND LAY DESCRIPTION

1.1 Lay Description
The City of American Canyon (City) is located at the southern end of Napa County, just north of Solano County and the City of Vallejo. The City is located approximately 45 miles west of Sacramento along Interstate I-80 and is approximately 5.5 square miles in size. American Canyon incorporated in 1992 from Napa County. Since its incorporation, the City has increased residential development and added a large amount of business and commercial expansion along the Highway 29 corridor and south of Napa Airport.

The City’s potable water service area is approximately 11 square miles and encompasses the City limits and its sphere of influence and extends from the Napa River to the west to the Napa/Solano County line to the east and from the Napa/Solano County line to the south to Soscol Ridge north of the airport.

The City potable water supply is purchased or imported water sources, mainly State Water Project (SWP) water purchased from the Napa County Flood Control and Water Conservation District (FCWCD) and the City of Vallejo. The City owns, maintains, and operates the Water Treatment Plant (WTP) which has a maximum capacity of 5 million gallons per day (mgd) with an average daily demand of approximately 3 mgd. Treated water is delivered by gravity to the 2.5 million gallon (MG) water storage tank located at the WTP and flows from the tank to the distribution system. The potable water distribution system consists of approximately 102 miles of water mains, three storage tanks, and two booster pump stations.

In 2025, the average annual population was estimated to be 22,854. The population is anticipated to increase to 26,730 by the year 2050.

Water demands served by the City are primarily residential, including single-family residential (SFR) and multi-family residential (MFR), commercial, industrial, and institutional (CII), and landscape irrigation. All connections in the City are metered. The total demand (potable and non-potable) in 2025 was approximately 2,235 acre feet (AF). Residential demands account for 1,324 AF (59 percent) of the total demand, while CII demands account for 622 AF (28 percent), and landscape irrigation demands account for 109 AF (5 percent). Raw water for agricultural irrigation was 28 AF (1 percent). The remaining balance is attributed to hydrant flushing (9 AF), other uses (private fire protection services, temporary watering of construction sites) at 41 AF (2 percent) and water loss of 102 AF (5 percent). Demands are anticipated to be 2,647 AF by the year 2050.

The City met the 2020 target (162 gallons per capita per day [gpcd]) in the year 2020 (116 gpcd) and in the year 2025 (87 gpcd). The City will implement conservation measures, as needed, to comply with the State Water Board’s Making Conservation a California Way of Life regulation (compliance effective January 1, 2027). In all of its conservation programs, the City will avoid placing a disproportionate burden on any customer sector.

Supply availability was reviewed under a single-dry-year and a five-consecutive-year drought, in addition to a drought risk assessment (DRA) from 2026 through 2030. The City anticipates it can supply all its water demands by purchasing supplemental imported water through existing agreements through the planning horizon (2050) for all water year scenarios.
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The City Water Conservation Plan Chapter 13.14 meets all requirements set forth by Department of Water Resources (DWR) for drought planning, including six supply shortage stages, response actions for demand reduction, supply augmentation, operational changes, and mandatory prohibitions to address shortage levels.

1.2 Background and Purpose
The California Water Code (CWC) requires urban water suppliers within the state to prepare and adopt an Urban Water Management Plan (UWMP) for submission to the DWR. The UWMP, filed every five years, must satisfy the requirements of the Urban Water Management Planning Act (UWMPA) of 1983, including amendments that have been made to the Act. The UWMPA requires urban water suppliers servicing 3,000 or more connections, or supplying more than 3,000 AF of water annually, to prepare a UWMP.

The purpose of the UWMP is to maintain efficient use of urban water supplies, continue to promote conservation programs and policies, ensure that sufficient water supplies are available for future beneficial use, and provide a mechanism for response during water drought conditions. This document, which was prepared in compliance with the CWC, and as set forth in the 2025 Urban Water Management Plan Guidebook for Urban Water Suppliers (January 2026) established by the DWR, constitutes the City 2025 UWMP.

This 2025 UWMP was prepared in compliance with the UWMPA (CWC §10610-10656 and §10608 et seq.) and the Water Conservation Bill of 2009 (Senate Bill [SB] X7-7) by Carollo Engineers, Inc. (Carollo). Contact information for the City and Carollo is included in the Contact Sheet provided at the beginning of this document.

The City recognizes the importance of maintaining a high-quality reliable water supply and although water is a renewable resource, it is limited. A long-term reliable supply of water is essential to protect the local and state economy. The primary focus for the City is to provide high quality water, maximize the efficient use of water, and promote conservation.

1.2.1 Previous Urban Water Management Plan
The City previously prepared an UWMP in 2020, which was approved and adopted on September 6, 2022 (Resolution 2022-85). Following adoption, the 2020 UWMP was submitted to and formally approved by the DWR. The 2025 UWMP report serves as an update to the 2020 UWMP and pulls extensively from that report.

1.3 Urban Water Management Planning Act and the California Water Code
In 1983, State Assembly Bill (AB) 797 modified the CWC Division 6 by creating the UWMPA. Several amendments to the original UWMPA, which were introduced since 1983, have increased the data requirements and planning elements to be included in the UWMPs.

Initial amendments to the UWMPA required that total projected water use be compared to water supply sources over the next 20 years, in 5-year increments. DWR guidelines also suggest projecting through a 25-year planning horizon to maintain a 20-year timeframe until the next UWMP update has been completed.
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Other amendments require that UWMPs include provisions for recycled water use, demand management measures (DMMs), and a Water Shortage Contingency Plan (WSCP). Recycled water was added in the reporting requirements for water usage and figures prominently in the requirements for evaluation of alternative water supplies, when future projections predict the need for additional water supplies. Each urban water purveyor must coordinate the preparation of the WSCP with other urban water purveyors in the area, to the extent practicable. Water suppliers must also describe their water DMMs that are being implemented or are scheduled for implementation.

In addition to the UWMPA and its amendments, there are several other regulations that are related to the content of the UWMP. In summary, the key relevant regulations are:
 AB 1420: Requires implementation of DMMs/best management practices (BMPs) and meeting the 20-by-2020 targets to qualify for water management grants or loans.  AB 1420: Requires a plan to quantify and report on distribution system water loss.  AB 1420: Provides for water use projections to display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans, when that information is available and applicable to an urban water supplier.  AB 1465: Requires water suppliers to describe opportunities related to recycled water use and stormwater recapture to offset potable water use.
 Amendments SB 610 (Costa, 2001) and AB 901 (Daucher, 2001): Require counties and cities to consider information relating to the availability of water to supply new large developments by mandating the preparation of further water supply planning (Daucher) and Water Supply Assessments (Costa).
 SB 1087: Requires water suppliers to report SFR and MFR projected water use for lower income areas separately.
 Amendment SB 318 (Alpert, 2004): Requires the UWMP to describe the opportunities for development of desalinated water, including, but not limited to, ocean water, brackish water, and groundwater, as long-term supply.
 AB 105 (Wiggins, 2004): Requires urban water suppliers to submit their UWMPs to the California State Library.
 SB X7-7: Requires development and use of new methodologies for reporting population growth estimates, base per capita use, and water conservation. An agency can choose from four methods to establish their year 2020 water conservation targets. Retail water suppliers are required to comply with the water conservation requirements in SB X7-7 to be eligible for State water grants or loans.  AB 2067: Requires water suppliers to provide narratives of water DMMs.  SB 1036: Provides for an urban water supplier to include certain energy-related information, including, but not limited to, an estimate of the amount of energy used to extract or divert water supplies.  AB 2409: Requires urban water suppliers to analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains separately from swimming pools and spas.
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 AB 1572: Bans the use of potable water for irrigation of decorative turf grass that is not used for recreational or civic purposes, also referred to as non-functional turf. Applies to CII properties.  AB 1668 and SB 606: Establishes long-term standards for efficient water use and requires both urban retail water suppliers and agricultural water suppliers to set annual water budgets and prepare for drought.
 AB 325: Created the Water Conservation in Landscaping Act requiring DWR to develop a Model Water Efficient Landscape Ordinance (MWELO). MWELO is a model for local agencies to enforce minimum standards in landscape design, construction, and management.

1.4 New Requirements Since the 2020 UWMP
The major new requirements since the 2020 UWMP cycle are summarized in Table 1-1.

Table 1-1 Applicable Changes Since 2020 UWMP
Topic Summary
Making Conservation a
California Way of Life
Effective January 1, 2025, this regulation sets annual "urban water use objectives" (UWUOs) for urban retail water suppliers. The water budgets are based on a supplier's specific factors, such as indoor and outdoor residential use, commercial and industrial irrigation, and water loss.

Water Loss Control Regulations for urban retail water suppliers to develop performance standards for minimizing water system leaks became effective on July 1, 2023.

Monthly Water
Conservation Reports
Since October 1, 2020, urban water suppliers have been required to submit monthly conservation reports to the SWRCB.

Prohibition on CII
Nonfunctional Turf
Irrigation
AB 1572, signed in October 2023, bans the use of potable water for irrigating "nonfunctional turf" in CII areas. The ban will be phased between 2027 and 2029.

NOTES: SWRCB – State Water Resources Control Board; UWUO – urban water use objective.

1.5 Demonstration of Reduced Delta Reliance
Urban water suppliers that anticipate participating in or receiving water from a proposed project (i.e., “covered action”), such as a multi-year water transfer, conveyance facility, or new diversion that involves transferring water through, exporting water from, or using water in the Sacramento-San Joaquin Delta (Delta), are required to demonstrate reduced Delta reliance. The City receives supply through the SWP which includes covered actions. Therefore, Appendix A of this plan demonstrates the City’s consistency with Delta Plan Policy WR P1 (Reduce Reliance on the Delta Through Improved Regional Water Self-Reliance).
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1.6 Report Organization
This UWMP contains ten chapters, followed by appendices that provide supporting documentation for the information presented in the report. The chapters are briefly described below:
 Chapter 1 – Introduction and Lay Description: This chapter presents a lay description and the purpose of this UWMP.
 Chapter 2 – Plan Preparation: This chapter provides information on the process for developing the UWMP as well as coordination efforts with appropriate local agencies and the measures used to solicit public participation.
 Chapter 3 – System Description: This chapter presents a description of the water purveyor's service area and its characteristics including climate, population, and other demographic factors.  Chapter 4 – Water Use Characterization: This chapter presents a description of the water purveyor's current and projected water uses within the service area in five-year increments.  Chapter 5 – SB X7-7 Baselines, 2020 Targets, and 2025 Reporting: This chapter presents information on the water purveyor’s compliance with the 2020 per-capita water conservation mandate. This chapter provides analyses and calculations associated with the water conservation target pursuant to SB X7-7.
 Chapter 6 – Water Supply Characterization: This chapter presents a description of the water purveyor’s current and projected potable and non-potable water supply sources including information on the usage of surface water, groundwater, imported water, and an overview of usage of recycled water.

This chapter also includes information on the energy required to produce and distribute the water supply.
 Chapter 7 – Water Service Reliability and Drought Risk Assessment: This chapter presents the reliability of the water purveyor’s water system. This includes a discussion on future water reliability. In addition, there is an analysis of supply availability in a normal, single-dry-year, and in five consecutive dry years. This chapter also includes the DRA.
 Chapter 8 – Water Shortage Contingency Plan: This chapter includes an urban water shortage contingency analysis that includes stages of action to be undertaken in the event of water supply shortages; prohibitions, consumption reduction methods, and penalties; actions to be taken during a catastrophic interruption of service; and a mechanism for measuring water use reduction.  Chapter 9 – Demand Management Measures: This chapter communicates the water purveyor’s efforts to promote conservation and to reduce demand. The chapter includes narratives on each DMM.  Chapter 10 – Plan Adoption, Submittal, and Implementation: This chapter describes the steps taken to adopt, submit, and implement the UWMP and make it publicly available. 31 2025 URBAN WATER MANAGEMENT PLAN
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CHAPTER 2 PLAN PREPARATION
This section includes specific information on how the UWMP was developed, including efforts in coordination and outreach.

2.1 Basis for Plan Preparation
CWC 10617 requires that urban water suppliers with 3,000 or more service connections or supplying 3,000 or more AF of water per year prepare an UWMP every five years. 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…

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

To demonstrate the basis of reporting, the Public Water System served by the City is listed in Table 2-1. As listed in Table 2-1, the City served one public water system with a total of 6,023 connections and a total of 2,235 acre-feet per year (AFY) in year 2025.

Table 2-1 Public Water Systems
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)
CA2810005 City of American
Canyon 6,023 2,235
Total 6,023 2,235
NOTES: Source: 2025 Annual Report to the Drinking Water Program for Year Ending December 31, 2025. 32 2025 URBAN WATER MANAGEMENT PLAN
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2.2 Individual Planning and Compliance
This UWMP reports solely on the City service area, as shown in Table 2-2. The City has notified and coordinated with appropriate regional agencies and constituents.

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

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

Notes: RUWMP – Regional Water Management Plan.

2.3 Calendar Year and Units of Measure
1608.20(a)(1) Urban retail water suppliers … may determine the targets on a fiscal year or calendar year basis.

The City is reporting on a calendar year basis and therefore 2025 data includes the months of January to December 2025. Table 2-3 indicates the City type of reporting year and the units of measure for reporting water volumes throughout the 2025 UWMP.

Table 2-3 Supplier Identification
Submittal Table 2-3: Supplier Identification
Type of Supplier
Supplier is a wholesale supplier
Supplier is a retail supplier
Fiscal or Calendar Year
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Units of measure used in UWMP
Unit AF
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2.4 Coordination and Outreach
The UWMPA requires that the UWMP identify the water agency’s coordination with appropriate nearby agencies.

The City coordinated its efforts with relevant agencies and parties to ensure that the data and issues discussed in the plan are presented accurately.

2.4.1 Wholesale and Retail Coordination
10631(h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five-year increments to 20 years or as far as data is available.

The wholesale suppliers from which the City receives water supplies, as shown in Table 2-4, were provided 60-day notification (prior to the public hearing) that the City was in the process of preparing the 2025 UWMP. The 60-day notification letters are included in Appendix B. The wholesale suppliers were provided a notice of public hearing, including the time and location. The notice of public hearing to wholesale suppliers is included in Appendix B.

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

Wholesale Water Supplier Name
Napa County Flood Control and Water Conservation District City of Vallejo
City of Napa
The City meets regularly with other water suppliers. The City meets monthly with Napa County FCWCD and with other SWP contractors who purchase water from the Napa County FCWCD (i.e., Cities of Napa and Calistoga). The City also meets with the City of Vallejo for the purchase of Vallejo water.

2.4.2 Coordination with Other Agencies and the Community 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. 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 the plan…
The City solicited participation from other agencies, organizations, and the community for the preparation of the 2025 UWMP.
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2.4.3 Notice to Cities and Counties
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 a 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 provided formal written notification to the following cities, county, and agencies that the City’s UWMP was being updated:
 City of Rio Vista.
 City of Dixon.
 City of Calistoga.
 City of Benicia.
 City of Vacaville.
 City of Fairfield.
 Local Agency Formation Commission of Napa County.
 Napa County Resource Conservation District.
 Napa Sanitation District (NSD).
 Reclamation District 2068.
 Solano County Water Agency.
 Solano Irrigation District.

The City also provided formal written notification to the following top water users that the City’s UWMP was being updated:
 Napa Valley Unified School District.
 Mezzetta Processing Facility.
 American Canyon Mobile Home Park.
 Napa Olympia Mobilodge.
 The Lodge at Napa Junction.
 Top It Off Bottling, LLC.
 South County Napa Properties LP.
 Vintage Ranch LLC.

In accordance with the UWMPA, this notification was provided at least 60 days prior to the public hearing of the plan. Appendix B contains copies of outreach documents. The cities and counties were provided a notice of public hearing, including the time and location. The notice of public hearing to cities and counties is included in Appendix B.
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Notices were published informing interested parties that the draft 2025 UWMP was available for review.

Pursuant to California Code Section 6066, a notification of the time and place of the public hearing was published in the local newspaper on XXXX, XX, 2026, and XXXX, XX, 2026. A notice was also posted on the City’s website (www.americancanyon.gov). Copies of these notifications are included in Appendix B.

The Final Draft 2025 UWMP was presented on August 18, 2026, for adoption by resolution following a public hearing. This hearing provided an opportunity for the City’s customers, residents, and employees to learn and ask questions about the current and future water supply of the City. 36 2025 URBAN WATER MANAGEMENT PLAN
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CHAPTER 3 SYSTEM DESCRIPTION
The UWMPA requires that the UWMP include a thorough description of the water system, service area, and various aspects of the area served including climate, population, and other demographic factors. 10631(a) Describe the service area of the supplier, including current and projected population, climate, and other demographic factors affecting the supplier's water management planning. The projected population estimates shall be based upon data from the state, regional, or local service agency population projections within the service area of the urban water supplier and shall be in five-year increments to 20 years or as far as data is available.

3.1 General Description
The City is located at the southern end of Napa County, just north of Solano County and the City of Vallejo. The City is located approximately 45 miles west of Sacramento along Interstate-80 and is approximately 5.5 square miles in size. American Canyon incorporated in 1992 from Napa County. Since its incorporation, the City has increased residential development and added a large amount of business and commercial expansion along the Highway 29 corridor and south of Napa Airport.

The City’s potable water service area is approximately 11 square miles and encompasses the City limits and its sphere of influence and extends from the Napa River to the west to the Napa/Solano County line to the east and from the Napa/Solano County line to the south to Soscol Ridge north of the airport.

Figure 3-1 shows the City’s water service area and sewer and reclaimed area. The City’s water service area includes both the City limits as well as surrounding areas of unincorporated Napa County.

3.1.1 Description of Transmission, Treatment, and Distribution Facilities The City’s WTP (see Figure 3-1) has a maximum capacity of 5 mgd with an average daily demand of approximately 3 mgd. Treated water is delivered by gravity to the 2.5 MG water storage tank located at the WTP and flows from the tank to the distribution system.

The potable water distribution system consists of approximately 100 miles of water mains, three storage tanks, and two booster pump stations. The principal water transmission mains in the distribution system range in size from 14 to 20 inches. The distribution system in the older sections of the City range in size from 2 to 6 inches with the newer areas served by pipes 8 to 12 inches in diameter. Distribution system pipelines are constructed primarily of polyvinyl chloride (PVC), asbestos cement, and cast iron. The water distribution system contains five pressure zones.

The City potable water supply is purchased or imported water sources, mainly SWP water purchased from the Napa County FCWCD and the City of Vallejo.
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Source: City of American Canyon
Figure 3-1 Water Service Boundary and Infrastructure Location Map 38 2025 URBAN WATER MANAGEMENT PLAN
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3.2 Service Area Climate
10631(a) A plan shall… Describe the service area of the supplier, including … climate… 10630 It is the intention of the Legislature, in enacting this part, to permit levels of water management planning… while accounting for impacts of climate change.

The City’s service area climate is characterized by warm dry summers and mild winters. Average monthly evapotranspiration (ETo) rates, rainfall, and temperature are summarized in Table 3-0.

Table 3-0 Climate Characteristics
Table 3-0: Climate Characteristics(1)
Month
Monthly Average
ETo
(inches)
Monthly Average
Rainfall
(inches)
Monthly Average Temperature
(degrees Fahrenheit, [F])
Average Minimum Maximum
January 1.25 3.88 47.06 37.59 57.78
February 1.86 3.78 49.69 38.68 61.72
March 3.14 2.52 52.42 40.30 65.38
April 4.41 1.32 54.81 41.53 68.41
May 5.61 0.70 58.73 44.89 72.91
June 6.20 0.15 63.00 47.95 78.83
July 6.30 0.01 63.98 50.35 80.01
August 5.46 0.03 64.13 50.23 81.11
September 4.60 0.05 63.09 47.70 81.27
October 3.23 1.18 58.40 43.41 75.52
November 1.68 2.26 51.22 38.80 65.26
December 1.07 4.14 46.57 36.51 57.75
Annual 44.81 20.02
NOTES: F - degrees Fahrenheit.
(1) Source: California Irrigation Management Information System (CIMIS) Station 109 Carneros.

Represents monthly average from March 1993 to December 2021.

Climate data is from the CIMIS Gerber South Station Number (No.) 109 (activated in March 1993 and disconnected January 13, 2022). ETo values, which serve as indicators of how much water is required to maintain healthy agriculture and landscaping, range from 1.07 inches (December) to 6.30 inches (July).

Average annual rainfall is approximately 20.02 inches (value reflects the sum of monthly average rainfall).

The majority of rainfall occurs from November through March. Monthly precipitation has been as high as

13.16 inches (January 1995). The January mean temperature is 47 degrees F, with an average high of 58 degrees F and an average low of 38 degrees F. The July mean temperature is 64 degrees F with an average high of 80 degrees F and an average low of 50 degrees F. 39 2025 URBAN WATER MANAGEMENT PLAN
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3.3 Service Area Population and Demographics
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.

This section summarizes historical, current, and projected population trends in the City. Population projections are essential to the planning process and form the basis for most planning decisions, yet projecting future growth is far from an exact science given the complex set of variables that can affect the rate of growth. Typically, projections are developed by taking past patterns and combining them with assumptions regarding the future to obtain an estimate of future growth rates. These projections serve to provide the City insight on the type and quantity of future growth as well as guidance regarding future planning activities; therefore, such planning activities can only be as effective as the ability to anticipate population growth.

3.3.1 Service Area Population
The current and projected population within the City’s water service area is summarized in Table 3-1 and includes the total populations within the City limits and outside of the City limits as described in the following sections.

Table 3-1 Population – Current and Projected
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
2025 2030 2035 2040 2045 2050
22,477 23,830 24,555 25,280 26,005 26,730
NOTES: Refer to Sections 3.3.1.1 and 3.3.1.2 for projected populations methodologies.

3.3.1.1 Population within City Limits
After incorporation of the City in 1992, the City experienced rapid growth between 1995 and 2010 with an average annual growth rate of over 8 percent. Population growth has slowed in recent years, and the annual growth rate since 2010 has been around 1 percent (2023-2031 Housing Element).

The City had a population of 22,773 in 2025 according to the United States Census Bureau (www.census.gov).

The 2030 and 2040 projected populations in Table 3-1 are per the General Plan (November 2025) population projections prepared by the Association of Bay Area Governments for the City. Based on the 2030 and 2040 population projections, this results in a population increase of approximately 725 every 5 years. For 2035 and 2040 to 2050, it was assumed that the population growth rate would remain at the same rate (approximately 3 percent every 5 years).
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The following new developments are expected to contribute to housing growth in the City:
 Watson Ranch Project: Approximately 1,253 medium density housing units and 186 high density housing units are expected to be added in the northeastern portion of the City. As of 2026, approximately 461 housing units are completed.
 Broadway District Priority Development Area: Approximately 1,200 housing units are expected to be added along the Highway 29 corridor. As of 2026, approximately 66 housing units are completed.  Domaine (formerly Oat Hill): Approximately 291 multi-family units are expected to be added west of Highway 29. As of 2026, approximately 85 housing units are completed.  Canyon Estates: Approximately 35 housing units are expected to be added in the eastern portion of the City. The first units are under construction in 2026.  Crawford Way Development: Approximately 100 multi-family units are expected to be added in the western portion of the City. The first units will begin construction in late 2026.

The City has other proposed development projects in planning and approval phases. Refer to Section 3.4 for future study area (Hess/Laird property) that has the potential for additional growth.

3.3.1.2 Population Outside of City Limits
Less than 1 percent of the City’s single-family residential customers are located outside of the City limits in unincorporated Napa County in areas that have not experienced any housing development. These “legacy” accounts were originally connected and served by the American Canyon County Water District, a predecessor to the City.

The California Department of Finance (DOF) estimates population each year based on the number of building permits issued, residential units destroyed, requests for new electrical connections, etc. To estimate the population outside of the City limits, the number of residential accounts in 2025 (34) was multiplied by the number of persons per household for unincorporated Napa County for 2025, which was

2.38 according to the most recent DOF estimates. Based on this calculation, the population outside of the City limits is estimated to be 81.

For 2030 to 2050, it was assumed that the General Plan population projections includes the population outside of City limits.

3.3.2 Other Social, Economic and Demographic Factors
10631 Describe the service area of the supplier, including… other social, economic and demographic factors affecting the supplier’s water management planning.

Analyzing demographic data can yield important information about possible shifts in demand for City water service.

According to the 2023-2031 Housing Element, the largest employment sectors are health and educational services (40 percent), manufacturing, wholesale, and transportation (19 percent), financial and professional services (12 percent), and retail (11 percent).

The 2023-2031 Housing Element indicates that the majority of housing units are single-family detached homes (79.1 percent), and the number of housing units was 6,214 in 2020. 41 2025 URBAN WATER MANAGEMENT PLAN
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75.0 percent of the population is over 18 years of age, and the population is split 48.3 to 51.7 percent male to female, respectively (United States Census Bureau QuickFacts).

The California median household income in 2025 was $118,100 (U.S. Department of Housing and Urban Development). The median household income for the City from 2020-2024 in 2024 dollars was $121,700 (US Census Bureau QuickFacts).

The California Employment Development Department reported an 8.8 percent unemployment rate for 2020 and a 4.5 percent unemployment rate for 2025.

3.4 Land Uses Within Service Area
10631(a) The description shall include the current and projected land uses within the existing or anticipated service area affecting the supplier’s water management planning. Urban water suppliers shall coordinate with local or regional land use authorities to determine the most appropriate land use information, including, where appropriate, land use information obtained from local or regional land use authorities…
The Land Use Element in the General Plan (November 2025) establishes the pattern and intensity of land use in the city and sets forth the City’s policies and standards for guiding future development. Figure 3-2 identifies the location of land uses by land use designation. 42 2025 URBAN WATER MANAGEMENT PLAN
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Source: City of American Canyon General Plan Land Use Element (November 2025) Figure 3-2 Land Use Map
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The City has identified a future study area (refer to Figure 3-2) that has the potential for additional growth. This future study area encompasses the Hess/Laird property which is currently located within the jurisdiction of Napa County and was recently rezoned for industrial uses by the County. This future study area will be revisited during preparation of the 2030 UWMP when more information about specific uses for this property may be available.

3.5 Climate Change
Projected climate change trends for California include increasing temperature and increasing precipitation as rainfall rather than snow. Water suppliers need to assess local climate challenges and plan for vulnerabilities within their systems. As these risks are identified, methods of adaptation and mitigation can be employed to increase sustainability of water resources.

In the past decade, there has been a significant increase in tools and models to help identify potential impacts of climate change. The various resources differ in the information available in each service area, scenario assumptions, and parameters potentially impacted by climate change. The following tools were evaluated for this UWMP and are described in further detail in the sections below:
 Climate Resilience Evaluation and Awareness Tool (CREAT).  Cal-Adapt Extended Drought Scenarios Tool.
 Cal-Adapt Wildfire Tool.

3.5.1 EPA Climate Resilience Evaluation and Awareness Tool The United States Environmental Protection Agency (EPA) created an online resource called CREAT to assist water agencies in preparing for potential future impacts on their systems caused by climate change.

This tool utilizes model simulation to estimate changes in temperature, precipitation, storms, extreme heat, and sea level rise. For the purposes of this UWMP, the Cal-Adapt tool was used, which is consistent with the tool presented by DWR.

3.5.2 Cal-Adapt Extended Drought Scenarios Tool
Cal-Adapt is an online resource created by the State of California’s scientific and research community to provide visualization tools and high-quality data regarding climate change at a local level. This resource allows the user to explore charts, maps, data, and projected climate variables for the State of California, and is a key recommendation of the 2009 California Climate Adaptation Strategy and the DWR. All projections generated include two possible climate outcomes; one scenario where greenhouse gas (GHG) emissions peak near year 2040 and decline beyond 2040 (medium, Representative Concentration Pathway [RCP] 4.5), and another in which GHG emissions continue to rise throughout the 21st century (high, RCP 8.5). The tool allows the user to search by watershed, grid, counties, census tracts, and incorporated and census designated places. Thus, this tool was used to evaluate the impacts of climate change within the City’s service area using the medium, RCP 4.5, and high, RCP 8.5, GHG emission scenarios.
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The Extended Drought tool was used to evaluate early and late century variable climate impacts for the City watershed over a 20-year drought including 5 years prior and 4 years following. This two-decade extended drought period is often referred to as a “mega-drought.” The results, which include minimum and maximum temperature, precipitation, ETo, and runoff, are summarized in Table 3-2.

Table 3-2 Extended Drought Scenario Projections
Table 3-2: Extended Drought Scenario Projections
Parameter Observed Historical
(1961 - 1990)
Early-Century
(2023 - 2042)
Late-Century
(2051 - 2070)
Maximum Temperature (°F) 70.8 74.3 77.4
Minimum Temperature (°F) 45.5 48.0 51.2
Precipitation (inch) 22.6 19.2 19.2
Evapotranspiration (inch) 15.3 14.3 14.4
Runoff (inch) 2.7 2.4 2.3
NOTES: Retrieved using Cal-Adapt Extended Drought tool.

The projected increase in maximum temperature from historical years to late-century is 6.6 degrees F (9.3 percent), whereas the projected increase in minimum temperature is 5.7 degrees F (12.5 percent).

Precipitation is projected to decrease by 3.4 inches by late-century (15.0 percent), ETo by 0.9 inches (5.9 percent), and runoff by 0.4 inches (14.8 percent).

3.5.3 Cal-Adapt Wildfire Tool
The Cal-Adapt Wildfire tool utilizes four models identified by the California Climate Action Team as priority models contributing to the 2018 California Fourth Climate Change Assessment. The models listed below describe the scenarios used in area burned wildfire projections:
 Warm/dry scenario (HadGEM2-ES).
 Cooler/wetter scenario (CNRM-CM5).
 Average scenario (CanESM2).
 A scenario that is unlike the first three models, the “complement” scenario (MIROC5).

The model projections generated include the same two possible climate outcomes: RCP 4.5 and RCP 8.5.

Time periods for the wildfire analysis include historical (1961-1990), mid-century (2035-2064), and end of the century (2051-2070). The population growth scenario for the City service area was identified as central, or median. Summary statistics of all four priority models under medium and high RCP conditions for the City watershed are below in Table 3-3.
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Table 3-3 Summary of Projected Wildlife Area Burned
Table 3-3: Summary of Protected Wildlife Area Burned
Parameter Observed Historical
(1961 - 1990)
Mid-Century
(2035 - 2064)
End of the Century
(2051 - 2070)
RCP 4.5 Conditions
Minimum Area Burned
(hectares)

63.0 59.0 82.0
Average Area Burned
(hectares)
151.8 165.4 167.6
Maximum Area Burned
(hectares)
273.0 323.0 262.0
RCP 8.5 Conditions
Minimum Area Burned
(hectares)

64.0 70.0 68.0
Average Area Burned
(hectares)
156.1 165.6 158.1
Maximum Area Burned
(hectares)
341.0 266.0 274.0
NOTES: Retrieved using Cal-Adapt Wildfire tool.

Based on these statistics, the probability of wildfires in the City watershed is anticipated to be fairly steady, while the average area burned is anticipated to increase under both the RCP 4.5 and RCP 8.5 conditions. 46 2025 URBAN WATER MANAGEMENT PLAN
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CHAPTER 4 WATER USE CHARACTERIZATION
The UWMPA requires that the UWMP identify the quantity of water supplied to the agency’s customers including a breakdown by user classification. This section describes the water system demands and water demand projections.

4.1 Non-Potable Versus Potable Water Use
This chapter covers potable and raw water demand. Recycled water is addressed comprehensively in Chapter 6.

4.2 Past, Current, and Projected Water Use by Sector
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… (2) The water use projections shall be in the same five-year increments described in subdivision (a). (4)(A) Water use projections, where available, shall display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans identified by the urban water supplier, as applicable to the service area. (B) To the extent that an urban water supplier reports the information described in subparagraph (A), an urban water supplier shall do both of the following: (i) Provide citations of the various codes, standards, ordinances, or transportation and land use plans utilized in making the projections. (ii) Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.

The following water use sectors and associated metered deliveries, as shown in Table 4-0, were reported in the 2020 UWMP.

Table 4-0 2020 Water Deliveries
Table 4-0:2020 Water Deliveries
Use Type 2020 Actual (AF)
Single Family 1,276
Multi-Family 178
Commercial, Institutional, and Industrial (CII) 763
Landscape 139
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Table 4-0:2020 Water Deliveries
Use Type 2020 Actual (AF)
Agricultural 63
Other Potable(1) 73
Distribution System Water Loss 144
TOTAL 2,636
NOTES:
(1) Private fire protection services and temporary watering of construction sites.

The actual demands for potable and non-potable water are presented in Table 4-1 for the 2025 calendar year. All connections in the City are metered.

Table 4-1 Total Uses for Potable and Non-Potable Water
Submittal Table 4-1 Retail: Total Uses for Potable and Non-Potable Water — Actual Water Code Section 10631(d)(1)
Use Type
Additional Description
2025 Actual Water Use
Potable or
Non-Potable Volume (AF)
Single Family Potable 1,117
Multi-Family Potable 207
Commercial Includes industrial/institutional. Potable 622 Landscape Potable 109
Agricultural Raw water. Non-Potable 28
Other
Private fire protection services,
temporary watering of
construction sites.

Potable 41
Other Hydrant Flushing. Potable 9
Distribution System Water Loss Estimated. Potable 102
Subtotal Potable 2,207
Subtotal Non-Potable 28
Total 2,235
NOTES: Source: City 2025 Itemized Water Estimates.
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Table 4-2 contains the projected water demands from 2030 through 2050. The demand projections are based on the following assumptions for each use type:
 SFR and MFR: In 2025, the total residential (single-family and multi-family) demand was 1,324 AFY (see Table 4-1) and the estimated population was 22,854 (see Table 3-1). The projected population (see Table 3-1) was multiplied by the 2025 residential demand factor (52 gallons per person per day).

SFR demands were assumed to be 90 percent of the total residential demand.  CII: Assumed to increase at the same rate as SFR and MFR.  Landscape: Assumed to remain at the 2025 water use through 2050. Potable water demand for landscape irrigation is expected to decrease as conversion to recycled water occurs (see Table 6-6).

The Water Waste Prohibitions Ordinance (City Municipal Code Section 13.14.060) and City Municipal Code Chapters 16.14 and 19.22 may also contribute to “passive” water savings (see Section 9.1).  Agricultural Irrigation: Assumed to remain at the 2025 water use through 2050.  Other Potable (private fire protection services, temporary watering of construction sites): Assumed to remain at the 2025 water use through 2050.
 Other Potable (hydrant flushing): Assumed to remain at the 2025 water use through 2050.  Losses: Assumed to remain at the 2025 distribution system water loss (5 percent of the total projected potable water use). Refer to Section 4.4 for further information. 49 2025 URBAN WATER MANAGEMENT PLAN
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Table 4-2 Total Uses for Potable, and Non-Potable Water - Projected Submittal Table 4-2 Retail: Total Uses for Potable, and Non-Potable Water — Projected Water Code Section 10631(d)(1)
Use Type
Additional Description (as
needed)
Projected Water Use
(Report To the Extent that Records are Available)
Potable or
Non-Potable 2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF) Single Family Potable 1,249 1,287 1,325 1,363 1,401
Multi-Family Potable 139 143 147 151 156
Commercial Includes
industrial/institutional Potable 695 716 737 758 779
Landscape Potable 109 109 109 109 109
Agricultural Raw water Non-Potable 28 28 28 28 28
Other
Private fire protection
services, temporary
watering of construction
sites
Potable 41 41 41 41 41
Other Hydrant Flushing Potable 9 9 9 9 9
Distribution System Water Loss Potable 112 115 118 121 124 Subtotal Potable 2,353 2,420 2,486 2,553 2,619
Subtotal Non-Potable 28 28 28 28 28
Total 2,381 2,448 2,514 2,581 2,647
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The customer sector water deliveries in Table 4-2 are only general estimates of projected use and may vary significantly based on future development and water conservation measures taken by each customer sector. Ultimately, the implementation, magnitude, and type of future development will determine the distribution of water use per customer sector.

4.3 Estimating Future Water Savings
"Passive" savings are water savings from codes, standards, ordinances, or transportation and land use plans. As shown in Table 4-3, future water savings are included in the water use projections for landscape irrigation (Table 4-2). Optional Table 4-4 has been left blank.

Table 4-3 Inclusion in Water Use Projections
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, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found. Section 4.2 Are Lower Income Residential Demands Included In Projections? Yes If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found. Section 4.5 Table 4-4 Passive Water Savings Projections
Optional 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 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)

4.4 Distribution System Water Losses
10631(e)(1) 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, identifying the uses among water use sectors, including, but not necessarily limited to, all of the following uses:
(J) Distribution system water loss…..
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 51 2025 URBAN WATER MANAGEMENT PLAN
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Distribution system water losses ("real" losses) are the physical water losses from the water distribution system and the supplier's storage facilities up to the point of delivery to the customer’s system (e.g., up to the residential water meter). The City’s distribution system losses are quantified using the American Water Works Association (AWWA) Method Guidance "Water Resources Water Audit Manual." Distribution system water losses include “real losses” (leaks) and “apparent losses” (unauthorized consumption, metering inaccuracies, data errors).

As shown in Table 4-5, the distribution system water loss was reported to DWR for 2020 through 2022 calendar years. The City is in process of finalizing and submitting the 2023 and 2024 water loss audits.

Table 4-5 Water Loss Audit Reporting
Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
Public Water System ID
Number Reporting Period Submitted to DWR Water Loss Audit Program(1) CA2810005
2020 Yes
2021 Yes
2022 Yes
2023 No
2024 No
NOTES: (1) Refer to the following links for the Water Loss Audit Reports. 2020:
https://wuedata.water.ca.gov/public/awwa_uploads/3529294669/American%20Canyon%20%2D%20Validated %20Water%20Audit%20%2D%202020%2Exlsx
2021:
https://wuedata.water.ca.gov/public/awwa_uploads/2298413932/American%20Canyon%20%2D%20Validated %20Water%20Audit%20%2D%202021%2Exlsx
2022:
https://wuedata.water.ca.gov/public/awwa_uploads/4545255362/American%20Canyon%20%2D%20Validated %20Audit%202022%2Exlsx

4.4.1 Progress Toward Meeting the Water Loss Performance Standard 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.

The SWRCB has calculated 2028 real water loss and apparent water loss standards for the City. Table 4-6 presents the progress towards the 2028 water loss standards based on the most recent AWWA water loss audit (2024). The 2024 real and apparent water loss is below the 2028 real and apparent water loss standards. The City will maintain water losses to achieve compliance beginning January 1, 2028. Refer to Section 9.5 for additional information.
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Table 4-6 Progress Towards 2028 Water Loss Standard
Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
Public Water
System ID
Number
Did the Water Board
Calculate a Water Loss
Standard for this Public
Water System?
Real Water Loss Apparent Water Loss
State Water Board Standard Most Recent AWWA Water Loss Audit Real Water
Loss Per
Unit per Day
State Water Board Standard Most Recent AWWA Water Loss Audit Apparent
Water Loss Per
Unit per Day
2028 Real Water
Loss Standard per
Unit per day
Units for Real
Water Loss
Number of
Connections
Volume of Total Real
Loss (AF)
2028 Apparent
Water Loss Standard
per Unit per Day
Units for
Apparent
Water Loss
Number of
Connections
Volume of Total
Apparent Loss (AF)
CA2810005 Yes 16.4 GPSCD 5,999 107 15.9 8.0 GPSCD 5,999 15 2.2 NOTES: GPSCD - gallons per service connection per day. Data from the City's 2024 AWWA Water Loss Audit. 53 2025 URBAN WATER MANAGEMENT PLAN
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4.5 Water Use for Lower Income Households
The UWMPA requires that the UWMP identify planned low-income housing developments within the agency’s service area and develop demand projections for those units. A lower income household is defined as one with an income below 80 percent of area median income, adjusted for family size. 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.

As shown in Table 4-3, lower income household demand projections are included in the total water use projections (Table 4-2).

The City’s General Plan’s Housing Element is the City’s housing plan. The City, along with all California cities and counties, is required to adequately plan to meet the housing needs of everyone in the community. The foundation for the Housing Element is the Regional Housing Needs Assessment (RHNA), in which the State estimates each region’s housing needs for all income groups. The Housing Element contains the City’s housing needs targets for five income groups.

The RHNA for the City for the 2023 to 2031 projection period is 622 new housing units, including 169 very low-income units, 109 low-income units, 95 moderate-income units, and 249 above moderate-income units (2015-2023 Housing Element).

It should also be noted, State legislation in 2017 made Accessory Dwelling Units (ADUs) legal in all California cities. Homeowners can decide to build either a detached ADU in their backyard, an attached ADU that is part of a home addition, or an ADU conversion. Although the State has determined ADUs contribute no additional stress on utilities, the addition of another dwelling unit, another family occupant, on a single-family property does impact water usage. The City has issued [few/many] permits for ADUs since 2017.

4.6 Climate Change Considerations
As temperature rises, water demands from various types of users will likely increase. Daily heat patterns, such as the duration of daytime heat prior to nighttime cooling, will change the diurnal demand patterns and peaking factors for activities, such as landscaping and other outdoor water use features (e.g., pools, fountains, open water bodies), due to increased ETo values. The altered climate patterns in California creating hotter days and longer heat waves will increase customer water use and evaporative water losses.

Extended drought periods are expected to become both more frequent, and more severe, which could lead to reduced rainfall and snowpack.

The combination of a long-term reduction in water supply availability with a long-term increase in water demand and higher summer demand peaks will increase pressure on the City to meet demands.

Technology and devices to increase monitoring through the distribution system will help the City prepare for, and respond to, changes in supply and demand due to climate change. Creating redundancy through backup systems and supply sources will help the City achieve efficiencies required in the face of climate change considerations. Getting localized, region specific data on climate change forecasts and impacts would also help the City for planning purposes.
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The City’s service area is predicted to have declining precipitation and increasing temperatures, which may change demand levels and patterns. Continued reduction in per capita demand with water conservation will become more challenging as BMP saturation levels climb. Climate change will likely put more strain on the City’s ability to meet demands long-term. If per capita water demand increases with temperature, or the population increases at a higher rate, or purchased or imported water supplies decrease due to extended droughts, or water availability is impacted due to wildfires, the effects could have serious consequences.
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CHAPTER 5 SB X7-7 BASELINES, 2020 TARGETS, AND
2025 REPORTING
The UWMPA requires that the UWMP identify the baseline water demand and urban water use target for the City. In the 2015 UWMP, water use targets were determined per the DWR Methodologies. The daily per capita water use, expressed in gpcd, is the total water use within the service area divided by the population. These targets are necessary to judge compliance with the 2020 use reductions set forth in the Water Conservation Bill of 2009 (SB X7-7).

The purpose of this section is to report on the City’s compliance in meeting the 20 percent conservation mandate (i.e., 2020 Target). All SB X7-7 forms previously submitted in the 2020 UWMP are included in Appendix C.

5.1 Baselines
In the 2015 UWMP, a 10-year baseline and a 5-year baseline were calculated to establish the minimum criteria for the City’s water use reduction targets. A summary of the 2008 total and recycled water deliveries, 10-year baseline range (1999 to 2008), and 5-year baseline range (2003 to 2007) is included in Table 1 of the SB X7-7 Verification Form (Appendix C).

5.2 Service Area Population
10608.20(e) An urban retail water supplier shall include in its urban water management plan… the baseline per capita water use… along with the bases for determining those estimates, including references to supporting data.
(f) When calculating per capita values for the purposes of this chapter, an urban retail water supplier shall determine population using federal, state, and local population reports and projections.

Service area population is reported for each year in the baseline periods as well as 2020, the compliance year, in Table 3 of the SB X7-7 Verification and Compliance Forms (Appendix C). As shown in Table 2 of the SB X7-7 Compliance Form (Appendix C), the 2020 population is per SB X7-7 Method for Population Finances 1 (DOF Table E-5) and per SB X7-7 Method for Population Finances 2 (Persons-per-Connection Method).
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5.3 Gross Water Use
10608.12(g) "Gross Water Use" means the total volume of water, whether treated or untreated, entering the distribution system of an urban retail water supplier, excluding all of the following:
(1) Recycled water that is delivered within the service area of an urban retail water supplier or its urban wholesale water supplier
(2) The net volume of water that the urban retail water supplier places into long term storage
(3) The volume of water the urban retail water supplier conveys for use by another urban water supplier
(4) The volume of water delivered for agricultural use, except as otherwise provided in subdivision (f) of Section 10608.24.
“Gross Water Use” is the total volume of water, whether treated or untreated, entering the distribution system of an urban retail water supplier with certain acceptable exclusions. Gross water use is reported for each year in the baseline periods as well as 2020, the compliance year, in Table 4 of the SB X7-7 Verification and Compliance Forms (Appendix C).

5.4 Baseline Daily Per Capita Water Use
The baseline daily per capita water use in each of the baseline years is calculated in Table 5 of the SB X7-7 Verification Form (Appendix C) by dividing annual gross water use by annual service area population. The average baseline daily per capita water use for the 10-year baseline, and 5-year baseline is summarized in Table 6 of the SB X7-7 Verification Form (Appendix C). The average baseline daily per capita water use for 2020, the compliance year, is summarized in Table 5 of the SB X7-7 Compliance Form (Appendix C).

5.5 Targets Summary
Based on the water use targets calculated in 2015, the City water use target for 2020 was 162 gpcd. The 2020 target was determined using Method 1. In order to meet the confirmation criteria, the 2020 target must fall below 95 percent of the 5-year baseline, which for the City is 204 gpcd. According to the DWR guidelines, the 2020 target is valid since it is less than the target confirmation criteria of 194 gpcd.

Refer to Table 7 and Table 8 of the SB X7-7 Verification Form (Appendix C) for more information on the calculation method and a summary of the targets.

5.6 Target Progress Reporting
10608.12(e) "Compliance daily per-capita water use" means the gross water use during the final year of the reporting period…
10608.20(e) An urban retail water supplier shall include in its urban water management plan… compliance daily per capita water use, along with the bases for determining those estimates, including references to supporting data.
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… 57 2025 URBAN WATER MANAGEMENT PLAN
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Water suppliers were required to calculate their actual 2020 water use (2020 calendar year) and evaluate whether their per capita 2020 target use was met. Refer to Table 5-1 and SB X7-7 Compliance Form Table 9 (Appendix C) for 2020 compliance. If water suppliers had not met the 2020 compliance, Table 5-1 would have entries for the 2025 per capita water use with confirmation of whether they met the 2020 target in 2025.

Table 5-1 SB X7-7 2020 Target Progress
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
Actual 2025
GPCD
Did Supplier
meet the
2020 Target
in 2025?
No Individual
Target 162 116 Yes NA NA
NOTES: NA - Not applicable.

The City met the 2020 target (162 gpcd) in the year 2020 (116 gpcd) and in the year 2025 (87 gpcd).

The State Water Board’s Making Conservation a California Way of Life regulation uses the 2020 Target as a back stop for the UWUO calculations. The City will implement conservation measures, as needed, to comply with the Making Conservation a California Way of Life regulation (compliance effective January 1, 2027). In all of its conservation programs, the City will avoid placing a disproportionate burden on any customer sector.
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CHAPTER 6 WATER SUPPLY CHARACTERIZATION
The UWMPA requires that the UWMP include a description of the agency’s existing and future water supply sources for the next 20 years. The description of water supplies must include detailed information on surface water, groundwater, the groundwater basin, potential opportunities for desalination of groundwater and seawater, and detailed information on the agency’s imported water.

6.1 Purchased or Imported Water
The City’s water supply is imported water from the SWP and City of Vallejo in addition to other supplemental imported water sources as described in the following subsections. The City’s contracts and agreements are available upon request.

6.1.1 State Water Project
The main source for the City’s water supply is from the SWP, which is operated by DWR. SWP water used by the City is diverted from the Delta and conveyed approximately 27 miles through the North Bay Aqueduct (NBA) system to the City’s WTP.

6.1.1.1 “Table A” Allotment
In 1967, the City (operating then as the American Canyon County Water District) entered into an agreement with the Napa County FCWCD for annual allotments of SWP water (i.e., “Table A” allotments).

The City’s contract with Napa County FCWCD is through 2035 and includes provisions for extensions. It is anticipated that the contract will be extended through 2085.

The City’s current “Table A” allotment is 5,200 AFY. The actual amount of SWP water available to the City varies from year-to-year due to hydrologic conditions, water demands of other SWP contractors, SWP facility capacity, and environmental/regulatory requirements.

6.1.1.2 Article 21 Water
In certain years, the City may also receive additional SWP water known as Article 21 water, which is identified in Article 21 of SWP long-term water supply contracts between DWR and each SWP water contractor. The year-to-year availability of the Article 21 water supply varies, and Article 21 water becomes available only when the following conditions are met:
 Such deliveries do not interfere with SWP “Table A” allocations and SWP operations.  Excess water is available in the Delta.
 Capacity is not being used for SWP purposes or scheduled SWP deliveries.  Contractors can use the SWP Article 21 water directly or can store it in their own system (i.e., the water cannot be stored in the SWP system).
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6.1.2 City of Vallejo
As described in the following subsections, the City has an agreement with the City of Vallejo to purchase the following water types:
 Vallejo Permit Water (raw water).
 Vallejo Treated Water (potable water).
 Vallejo Emergency Water (raw water).

6.1.2.1 Vallejo Permit Water
Vallejo has an appropriative water right for Delta water from the State Water Resources Control Board (SWRCB) pre-dating the construction of the SWP. The agreement with Vallejo allows the City to purchase up to 500 AFY of this water supply, referred to as Vallejo Permit Water (raw water), which is delivered through the SWP’s NBA system. Since the City began receiving Vallejo Permit Water in 1999, the City has received 100 percent of the full contracted volume every year with the exception of a supply curtailment in 2015.

6.1.2.2 Vallejo Treated Water
The agreement with Vallejo allows the City to purchase up to 628.6 AFY of Vallejo Treated Water (potable water). Vallejo Treated Water is delivered via an intertie connection following treatment of water at Vallejo’s Fleming Hill WTP.

6.1.2.3 Vallejo Emergency Water
The agreement with Vallejo allows the City to purchase up to 500 AFY of Vallejo Emergency Water (raw water) only in years when the City’s “Table A” allotment is curtailed.

6.1.3 Other Imported Water Sources
In addition to the primary supply sources described previously, in some years, the City also uses other supplemental imported water sources as described in the following subsections. The availability of these water supplies vary from year-to-year.

6.1.3.1 Other State Water Project Sources
Dry Year Water Purchase Program
DWR’s Dry Year Water Purchase Program (or Dry Year Water Bank) allows interested SWP contractors in dry years the option to purchase emergency water supplies from Sacramento Valley rice farmers, if supply is made available.
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Article 56 Carryover Water
DWR’s Article 56 Carryover Program allows water that is allocated to an SWP contractor but not used by the end of the year to be used in the next year. This water is exported from the Delta by the Banks Pumping Plant and stored in the San Luis Reservoir.
“Table A” Exchange Return Water
DWR’s “Table A” Exchange Return Water Program allows interested SWP contractors to receive a portion of another SWP contractors approved “Table A” allotment in exchange for return of future approved SWP “Table A” water at an established exchange ratio.

Turn-Back Water Pool Program
DWR’s Turn-Back Water Pool Program allows interested SWP contractors the option to buy and sell unused “Table A” water. The City has not purchased water through this program since 2016.

Dry-Year Transfer Program
DWR’s Dry Year Transfer Program allows for transfers in dry years through a combination of crop idling, groundwater substitution, and changes in reservoir operation. The City has not purchased water through this program since 2015.

Yuba Accord Dry-Year Water
The Lower Yuba River Accord is an agreement to settle issues related to in-stream flows in the Yuba River and fisheries habitat. The Yuba Accord Dry-Year Water Purchase Agreement allows interested SWP contractors the option to purchase water in dry years. The City has not purchased water through this program since 2015.

6.1.3.2 City of Napa Emergency Water
The agreement with Napa allows the City to purchase treated (potable) water under emergency conditions or when the NBA system or City WTP is offline for maintenance or other reasons. This water source would be deducted from the City’s SWP “Table A” allotment.

6.2 Groundwater
The City is located over the Napa-Sonoma Valley Lowlands Subbasin (identified as Groundwater Basin Number 2-002.03 by DWR). Previous studies of groundwater productivity in and near the City have indicated that usable groundwater resources in the City may be limited. As shown in Table 6-1, the City does not operate groundwater wells within the City limits for water supply. 61 2025 URBAN WATER MANAGEMENT PLAN
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Table 6-1 Groundwater Volume Pumped
Submittal Table 6-1 Retail: Groundwater Volume Pumped
Water Code Section 10631(4) and 10631(4)(c)
Check the box if the Supplier does not pump groundwater.

Check the box if all or part of the groundwater described below is desalinated.

Groundwater
Type
Potable or
Non-Potable Location or Basin Name 2021 (AF)
2022
(AF)
2023
(AF)
2024
(AF)
2025
(AF)

Total 0 0 0 0 0

6.3 Surface Water
The City does not have any surface water sources as part of its water supply.

6.4 Stormwater
The City has not identified any opportunities related to stormwater recapture to offset potable water use.

6.5 Wastewater and Recycled Water
The UWMPA requires that the UWMP address the opportunities for development of recycled water, including the description of existing recycled water applications, quantities of wastewater currently being treated to recycled water standards, limitations on the use of available recycled water, an estimate of projected recycled water use, the feasibility of said projected uses, and practices to encourage the use of recycled water.

6.5.1 Recycled Water Coordination
10633 The plan shall provide, to the extent available, information on recycled water and its potential for use as a water source in the service area of the urban water supplier. The preparation of the plan shall be coordinated with local water, wastewater, groundwater, and planning agencies that operate within the supplier's service area.

The City and NSD provide municipal wastewater and recycled water services within the City’s water service area.

The City provides wastewater collection, treatment and disposal services as well as recycled water services within the City limits as well as the Extra Territorial Sewer Service Area (ETSSA) located north of the City.

Note that the ETSSA excludes the Chardonnay Golf Course and the Napa County Airport. 62 2025 URBAN WATER MANAGEMENT PLAN
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NSD provides wastewater collection, treatment and disposal as well as recycled water services for the City of Napa and portions of unincorporated Napa County, including northern portions of the City’s water service area.

The City’s sewer/recycled water service area is shown in Figure 3-1.

6.5.2 Wastewater Collection, Treatment Systems, and Disposal 10633(a) (Describe) the wastewater collection and treatment systems in the supplier's service area, including a quantification of the amount of wastewater collected and treated and the methods of wastewater disposal.

6.5.2.1 Wastewater Collected within Service Area
The City’s wastewater collection system consists of gravity pipelines, two force mains (the Main and Industrial Basins from the southern and northern ends of the City, respectively), and a series of pump stations. The wastewater is conveyed to the City’s Water Reclamation Facility (WRF) (see Figure 3-1) for treatment.

NSD collects wastewater from the residents and businesses in the City of Napa, Silverado Country Club, the Napa County Airport, and several adjacent unincorporated areas, including northeastern portions of the City’s water service area. The wastewater is conveyed to NSD’s Soscol Water Recycling Facility (WRF), located outside the City’s water service area northwestern border for treatment.

The 2025 wastewater flows from the City's service area is summarized in Table 6-2. As shown in Table 6-2, the City contributed 1,847 AFY of wastewater flow into the City’s WRF and 120 AFY of wastewater flow into the NSD’s Soscol WRF in 2025.

Table 6-2 Wastewater Collected Within Service Area
Submittal Table 6-2 Retail: Wastewater Collected Within Service Area 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?
City of American
Canyon Metered 1,847
American Canyon Water
Reclamation Facility
(WRF) (formerly WWTP),
Place ID 205477.

Yes
Napa Sanitation
District Estimated 120
Napa Sanitation District
WWTP (Soscol Water
Recycling Facility), Place
ID 243858.

No
Total Wastewater Received from
UWMP Service Area in 2025: 1,967
Notes: WWTP – Wastewater Treatment Plant.
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6.5.2.2 Wastewater Treatment and Discharge within Service Area The City owns, maintains, and operates the WRF. The WRF has a total wastewater treatment capacity of

2.5 mgd at average dry weather flow conditions and 5.0 mgd at peak wet weather flow conditions.

The WRF facilities consists of flow equalization and aeration, micro-screening, grit removal, biological secondary treatment, and membrane filtration, and disinfection and, for discharges at Discharge Point 001, post-discharge aeration. The secondary treatment system consists of four parallel biological treatment trains, each providing anoxic and aerobic biological treatment, and membrane filtration. The four treatment trains can be used to segregate domestic wastewater (Main Aeration Basin) from industrial wastewater (North Aeration Basin). The WRF has separate disinfection systems for treated wastewater discharges and recycled water. Domestic and industrial wastewater are typically combined before secondary treatment but may be segregated more frequently as recycled water production increases.

Treated wastewater discharges are disinfected by ultraviolet light. Recycled water is disinfected using chlorine. Biosolids generated during the treatment process are stored in two sludge storage basins, until dewatered with a screw press and hauled to a landfill for disposal.

Treated wastewater discharges are regulated under National Pollutant Discharge Elimination System Waste Discharge Requirements (WDR) Order No. R2-2022-0019. Discharge is allowed to the North Slough on the Napa River (Discharge Point No. 001) and to two constructed freshwater wetlands that are tributary to the North Slough (Discharge Point No. 003). Treated wastewater is discharged from Discharge Point No. 001 during the wet season (November 1 through April 30) only. Treated wastewater is discharged from Discharge Point No. 003 year-round.

Table 6-3 identifies the volume of treated wastewater either recycled or disposed of within the service area in 2025.
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Table 6-3 Wastewater Treatment and Outcomes Within UWMP Service Area Submittal Table 6-3 Retail: Wastewater Treatment and Outcomes Within UWMP Service Area Water Code Section 10633(b)
Wastewater
Treatment Plant
Name and Place ID
Number
Does This
Plant Treat
Wastewater
Generated
Outside the
UWMP
Service Area?
2025 Volume
of
Wastewater
Received
from UWMP
Service Area
(AF)
Total
2025
Volume
of Water
Treated
(AF)
2025 Outcomes of Treated Wastewater
Water Recycled Within
UWMP Service Area
Water Recycled Outside
of UWMP Service Area
Effluent Discharge that is
not a Permitted Recycled
Water Use (Discharged
Treated Wastewater)
Required Discharge for
Instream Flow
Delivered to Another Entity for Additional
Treatment
Treatment
Level
Volume
(AF)
Treatment
Level
Volume
(AF)
Treatment
Level
Volume
(AF)
Treatment
Level
Volume
(AF)
Treatment
Level
Volume
(AF)
Name of other
entity
American Canyon
Water Reclamation
Facility (WRF)
(formerly WWTP),
Place ID 205477
No 1,847 1,847 Tertiary 473 0 Secondary,
Disinfected - 23 1,560 0 0
Total 1,847 1,847 473 0 1,560 0 0
NOTES: The volume of recycled water within the service area is treated to a tertiary level and is the metered amount sent to the recycled water system from the WRF. The volume of water treated is equal to the volume of wastewater collected in Table 6-2. Note that the sum of "2025 Outcomes of Treated Wastewater" does not equal to “Volume of Water Treated”, likely due to the error associated with estimating the volume of wastewater discharged. 65 2025 URBAN WATER MANAGEMENT PLAN
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6.5.3 Recycled Water System Description
10633(c) A description of the recycled water currently being used in the supplier’s service area, including, but not limited to, the type, place, and quantity of use.

The City's WRF produces disinfected tertiary recycled water under the General Water Reuse Order (Order No. 96-011) per the recycled water criteria defined by the SWRCB Division of Drinking Water (DDW) under California Administrative Code, Division 4, Title 22, California Code of Regulations.

The City’s recycled water distribution system includes approximately 14 miles of pipeline, a pump station, and two storage tanks with capacities of 1 MG and 1.5 MG.

6.5.4 Recycled Water Beneficial Uses

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

The City currently produces and delivers recycled water to meet demand on an as-needed basis. The City provides recycled water to private customers for landscape irrigation, City-owned facilities for landscape irrigation, and temporary users for dust control at construction projects.

The current and projected recycled water uses are summarized in Table 6-4. The demand projections are based on the following assumptions for each use type:
 Landscape Irrigation: Assumed to be based on the 2025 demand plus the planned methods to expand future recycled water use (see Table 6-6).
 Dust Control at Construction Projects: Assumed to remain at the 2025 water use through 2050. 66 2025 URBAN WATER MANAGEMENT PLAN
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Table 6-4 Recycled Water Direct Beneficial Uses Within Service Area Submittal Table 6-4 Retail: Recycled Water Direct Beneficial Uses Within Service Area Water Code Section 10633 (c),(d),(e)
Name(s) of Facility/ies Producing (Treating) the Recycled Water: City of American Canyon Name of Supplier Operating the Recycled Water Distribution System: City of American Canyon Use Type Potable or Non-Potable
(after treatment if treated)
Additional Information
(as needed) 2025 (AF) 2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF) Potential Recycled Water Use
Volume Narrative page number
(OPTIONAL)
Agricultural irrigation Non-Potable Vineyard irrigation 0 0 0 0 0 0 Landscape irrigation (exc golf courses) Non-Potable Landscape irrigation 465 ### ### ### ### ###
Other Non-Potable Dust control at
construction sites 9 9 9 9 9 9
Subtotal Potable 0 0 0 0 0 0 0
Subtotal Non-Potable 473 9 9 9 9 9 0
Total 473 9 9 9 9 9 0 0
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6.5.4.2 Planned Versus Actual Use of Recycled Water
The recycled water use projection for 2025 from the 2020 UWMP is compared to the 2025 actual use in Table 6-5.

Table 6-5 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual 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 (AF)
2025 Actual
Use (AF)
Agricultural irrigation 68 0
Landscape irrigation (exc golf courses) 552 465
Golf course irrigation 0 0
Commercial use 0 0
Industrial use 0 0
Geothermal and other energy production 0 0
Seawater intrusion barrier 0 0
Recreational impoundment 0 0
Wetlands or wildlife habitat 0 0
Groundwater recharge (IPR) 0 0
Reservoir water augmentation (IPR) 0 0
Direct potable reuse (DPR) 0 0
Other (Description Required) 5 9
Total 625 473
NOTES: Other refers to dust control at construction sites.

6.5.5 Actions to Encourage and Optimize Future Recycled Water Use 10633 The plan shall provide, to the extent available, information on recycled water and its potential for use as a water source in the service area of the urban water supplier… and shall include the following:
(g) A plan for optimizing the use of recycled water in the supplier’s service area, including actions to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate the increased use of treated wastewater that meets recycled water standards, and to overcome any obstacles to achieving that increased use.
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Table 6-6 presents the City’s planned methods to expand recycled water use and the associated expected increase in recycled water use. The City’s Recycled Water Master Plan identified 15 capital improvement projects, which are labeled as RW1 through R15, to upgrade the City’s recycled water system to serve projected buildout demands of nearly 1,000 AFY. Projects RW1, RW2, RW3, and RW8 have been completed.
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Table 6-6 Methods to Encourage Future Recycled Water Use 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)
Conversion of existing potable users Convert existing potable water uses for landscape irrigation by connecting them to the existing recycled water network. By 2019 137 RW4: Pelleria Drive Extend pipeline to convert La Vigne Community Park to recycled water landscape irrigation. By 2020 3 RW5: Jim Oswald Way / Mezzetta Court Extend pipeline to convert existing potable users to recycled water landscape irrigation. By 2019 18 RW6: Hanna Drive Extend pipeline to convert existing potable users to recycled water landscape irrigation. 2021-2024 2 RW7: Dodd / Klamath Court Extend pipeline to convert existing potable users to recycled water landscape irrigation. 2021-2024 7 RW9: Watson Lane
RW10: Main / South Napa Junction Road
RW11: Newell Drive
Extend pipeline to serve future landscape irrigation uses in Watson Ranch, undeveloped parcels north of Watson Lane and Canyon Estates developments. 2025-2034 266
RW12: Pump Station Upgrade Upgrade the City’s WRF Pump Station to support future connections when the total maximum month demand exceeds the existing pumping capacity (1,300 gallons per minute). 2025-2034 N/A RW13: Paoli Loop Road / Northern Vineyards Extend pipeline for irrigation of vineyards that currently receive raw water from the City. 2025-2034 105 RW14: Eucalyptus Drive
RW15: Broadway / Donaldson Way
Extend pipeline to increase reliability and balance pressures across the distribution system and connection additional users.
2025-2034 40
Connection of future users Use of recycled water by future development projects located within the existing recycled water network 2025-2034 205 Total (AF) 988
Unit Conversion to AF 988
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6.6 Desalinated Water Opportunities
10631(d) Describe the opportunities for development of desalinated water, including, but not limited to, ocean water, brackish water, and groundwater, as a long-term supply.

The UWMPA requires that the UWMP address the opportunities for development of desalinated water, including ocean water, brackish water, and brackish groundwater.

At the present time, the City does not foresee any opportunities for the production of desalinated water.

However, the City may pursue purchase of desalinated water if the supply became available through regional development.

6.7 Exchanges or Transfers
10631(d) Describe the opportunities for exchanges or transfers of water on a short-term or longterm basis.

The UWMPA requires the UWMP to address the opportunities for development of short or long-term transfer or exchange opportunities.

6.7.1 Exchanges
Water exchanges entail water being delivered by one water user to another water user, with the receiving water user providing water in return at a specified time or when the conditions of the parties' agreements are met.

The City does not have any existing or planned water exchanges. The City will continue to consider potential exchange opportunities.

6.7.2 Transfers
Water transfers entail a temporary or long-term change in the point of diversion, place of use, or purpose of use due to a transfer, sale, lease, or exchange of water or water rights.

The City does not have any existing or planned water transfers. The City will continue to consider potential transfer opportunities (such as one-time transfers from farmers who fallow fields and auction off their water).

6.7.3 Emergency Interties
The City does not have any emergency interties in which transfers of water can be made.

The City has interties with City of Vallejo (see Section 6.1.2) and an intertie with City of Napa (see Section

6.1.3.2).
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6.8 Future Water Projects
10631(f) …The urban water supplier shall include a detailed description of expected future projects and programs that the urban water supplier may implement to increase the amount of the water supply available to the urban water supplier in normal and single dry water years and for a period of drought lasting five consecutive water years. The description shall identify specific projects and include a description of the increase in water supply that is expected to be available from each project. The description shall include an estimate with regard to the implementation timeline for each project or program.

The UWMPA requires that suppliers describe water supply projects and programs that may be undertaken to meet the projected water demands.

As described previously, the City is 100 percent reliant on purchased or imported water for its potable water supply. In order to diversify its water sources and improve local control over the water supply, the City has been exploring various long-term water supply options based on the following evaluation criteria:
 Institutional: Is it within the City’s operational authority?  Technical: Can it be designed, operated, and maintained?  Capacity: Will it meet anticipated demands now and in the future?  Schedule: Can it be designed, built, and permitted in time to meet the City’s requirements?  Sustainability: Does it provide uninterrupted service without significant impacts?  Affordability: Can it be built and maintained at a reasonable cost?  Environmental: Is it consistent with local, state, and federal environmental regulations?  Quality: Is the water quality satisfactory and reliable? The City Council reviewed and discussed a preliminary list of long-term water supply options. Based on the criteria above, the City selected three options for further evaluation, including surface water storage at Lake Curry, groundwater production wells outside of City limits, and potable reuse of recycled water.

Specific projects or programs have not been selected for implementation; therefore, these projects have not been added to Table 6-7.

In 2017, the City became a partner in the Sites Reservoir Project, an off-river up to 1.5 million AF reservoir that will capture excess water from major storms and save it for drier periods. The Sites Reservoir Project will be located 10 miles west of Maxwell in the Sacramento Valley. The project 2024 annual report is included in Appendix D.

In January 2026, the United States Department of Interior (DOI) approved the Record of Decision for the Sites Reservoir Project, which authorizes the United States Bureau of Reclamation to move forward consistent with applicable federal laws and regulations. See Appendix D for the DOI press release for additional information.

Table 6-7 contains the City's future water project.
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Table 6-7 Expected Future Water Supply Projects or Programs Submittal Table 6-7 Retail: Expected Future Water Supply Projects or Programs Water Code Section 10631(f)
Name of Future
Projects or
Programs
Joint Project with other
suppliers? Additional
Description
(as needed)
Potable or
Non-Potable
(after treatment
if treated)
Planned
Implementation
Year
Planned for
Use in Year
Type
Expected Increase
in Water Supply to
Supplier
(AF) (yes/no) If Yes, Supplier
Name
Sites Reservoir Yes See Note 1 Potable See Note 2 All Year Types See Note 3 NOTES:
(1) See Appendix D.
(2) Construction is scheduled to begin in 2026. Sites Reservoir is anticipated to be operational at the end of 2033. (3) The current planned storage allocation for the City is 24,936 AF. Project is still in planning phase and storage allocation amount has not been finalized. 73 2025 URBAN WATER MANAGEMENT PLAN
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6.9 Summary of Existing and Planned Sources of Water
10631(b) Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a), providing supporting and related information, including all of the following… (b)(2) When multiple sources of water supply are identified, a description of the management of each supply in correlation with the other identified supplies. (h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in fiveyear increments to 20 years or as far as data is available. The wholesale agency shall provide information to the urban water supplier for inclusion in the urban water supplier’s plan that identifies and quantifies, to the extent practicable, the existing and planned sources of water as required by subdivision (b), available from the wholesale agency to the urban water supplier over the same five-year increments, and during various water-year types in accordance with subdivision (f). An urban water supplier may rely upon water supply information provided by the wholesale agency in fulfilling the plan informational requirements of subdivisions (b) and (f).

The actual source and volume of water for the year 2025 is presented in Table 6-8. As shown in Table 6-8, the City's total supply in 2025 was approximately 3,497 AFY. 74 2025 URBAN WATER MANAGEMENT PLAN
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Table 6-8 Water Supplies - Actual
Submittal Table 6-8 Retail: Water Supplies — Actual
Water Code Section 10631(b)
Water Supply
Additional Description
(as needed)
2025
Potable or Non-Potable
(after treatment if
treated)
Actual Volume
(AF)
Total Entitlement
(OPTIONAL)
(AF)
Purchased or Imported Water State Water Project "Table A" Water Potable 734 5,200
Purchased or Imported Water State Water Project Article 21 Water Potable 756 Varies
Purchased or Imported Water Article 56 Carryover Water Potable 1,075 Varies Purchased or Imported Water Table A Exchange Return Water Potable 0 Varies Purchased or Imported Water Vallejo Permit Water, See Note 1 Potable 472 500 Purchased or Imported Water Vallejo Permit Water, See Note 1 Non-Potable 28 Purchased or Imported Water Vallejo Treated Water Potable 24 628.6 Purchased or Imported Water Vallejo Emergency Water Potable 133 500 Purchased or Imported Water Napa Emergency Water Potable 275 Varies Subtotal Potable 3,469 6,829
Subtotal Non-Potable 28 0
Total 3,497 6,829
NOTES: Refer to Table 6-4 for 2025 recycled water use.
(1) The City receives Vallejo Permit Water (raw water), which serves the Agricultural Irrigation raw water demand (see Table 4-1). The remainder of the raw water is treated.
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The projected purchased or imported water supplies in Table 6-9 are based on historical deliveries of average (normal) years. The projected water supply in 5-year increments is included in Table 6-9. 76 2025 URBAN WATER MANAGEMENT PLAN
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Table 6-9 Water Supplies - Projected
Submittal Table 6-9 Retail: Water Supplies — Projected
Water Code Section 10631 (b)
Water Supply
Additional
Detail on
Water Supply
Potable or Non-Potable
(after treatment if treated)
Projected Water Supply (Report to the Extent Practicable) 2030 2035 2040 2045 2050 (opt)
Reasonably
Available
Volume (AF)
Total
Entitlement
(AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(AF)
Reasonably
Available
Volume (AF)
Total
Entitlement
(AF)
Purchased or Imported
Water.

State Water
Project "Table
A" Water.

Potable 2,808 5,200 2,808 5,200 2,808 5,200 2,808 5,200 2,808 5,200 Purchased or Imported
Water.

State Water
Project Article
21 Water.

Potable 568 Varies 568 Varies 568 Varies 568 Varies 568 Varies Purchased or Imported
Water.

Article 56
Carryover
Water.

Potable 0 Varies 0 Varies 0 Varies 0 Varies 0 Varies
Purchased or Imported
Water.

Table A
Exchange
Return Water.

Potable 0 Varies 0 Varies 0 Varies 0 Varies 0 Varies
Purchased or Imported
Water.

Vallejo Permit
Water, See
Note 1.

Potable 472
500
472
500
472
500
472
500
472
500
Purchased or Imported
Water.

Vallejo Permit
Water, See
Note 1.

Non-Potable 28 28 28 28 28
Purchased or Imported
Water.

Vallejo Treated
Water. Potable 628.6 628.6 628.6 628.6 628.6 628.6 628.6 628.6 628.6 628.6 Purchased or Imported
Water.

Vallejo
Emergency
Water.

Potable 0 500 0 500 0 500 0 500 0 500
Subtotal Potable 4,476 6,829 4,476 6,829 4,476 6,829 4,476 6,829 4,476 6,829 Subtotal Non-Potable 28 0 28 0 28 0 28 0 28 0
Total 4,505 6,829 4,505 6,829 4,505 6,829 4,505 6,829 4,505 6,829 NOTES: The volume available for each supply are based on the assumptions for average year type in Section 7.3.1. Refer to Table 6-8 for projected recycled water. (1) The City receives Vallejo Permit Water (raw water), which serves the Agricultural Irrigation raw water demand (see Table 4-2). The remainder of the raw water is treated. 77 2025 URBAN WATER MANAGEMENT PLAN
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6.10 Climate Change Impacts to Supplies
The CWC requires that suppliers consider climate change in their water supply analysis. The potential water supply effects related to climate change are discussed briefly in this section.

Because the City is 100 percent reliant on purchased or imported water for its potable water supply, the effects of climate change are best summarized by considering the effects of the region. The City has continued to participate in regional climate change studies, such as, the San Francisco Bay Area Integrated Regional Water Management Plan (IRWMP) (2019) that assess potential long-term impacts of climate change and mitigation and adaption strategizes. According to the IRWMP, climate change is expected to increase water supply variability and affect regional imported water supplies as follows:
 Total precipitation is expected to decrease in the Sierra Nevada sources.  Snow pack projected to decrease from less storage in the mountains.  Precipitation projected to shift toward more rain and less snow.  Timing of runoff is expected to shift to earlier in the year, affecting reservoir storage and hydropower generation, especially in the spring and summer months.  Sea-level rise may impact Delta water deliveries.

As scientific understanding of climate change continues to advance, the nature of these impacts and the impact on water supply availability and reliability will be thoroughly studied to identify proper mitigation and adaptation strategies.

One additional consideration for the City is the impact of wildfires on water quality. The wildfire season is typically followed by the rainy season and sometimes heavy precipitation, leading to high levels of sediment in runoff that can severely degrade water quality, such as the increase in turbidity levels. In addition, Per- and polyfluoroalkyl substances is also an emerging contaminant that can be found in firefighting foam that can stay and spread in the environment for decades and become a major contributor to drinking water contamination. With the increasing frequency of wildfires and atmospheric rivers across California, changes in treatment operations and/or treatment processes may be necessary to reliably treat and maintain water service to customers experiencing back-to-back impacts.

Additional details related to climate change data that have been collected using the Cal-Adapt tool are included in Chapter 3.

6.11 Energy Intensity
The 2025 UWMP guidebook requests that water suppliers provide information on the energy required to produce and distribute their water supply. Water energy intensity is the total amount of energy on a per acre-foot basis associated with water management processes occurring within the City’s operational control.
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6.11.1 Potable Water
The City has selected to report its energy intensity using the total utility approach Option B. In 2025, the City produced 2,235 AF of treated water entering the distribution system within its service area. The energy needed across the City’s potable water system in 2025 was XXX,XXX kilowatt hours (kWh). The City’s 2025 energy intensity is estimated at XXX kWh/AF (XXX kWh/MG). The energy intensity analysis (DWR Table O-1B) is located in Appendix E.

6.11.2 Wastewater and Recycled Water
In 2025, the City collected and treated 1,847 AF of wastewater within its service area. The energy needed to collect and treat the wastewater in 2025 was XXX,XXX kWh and XXX,XXX kWh, respectively. The City’s 2025 wastewater (including recycled water) energy intensity is estimated at XXX kWh/AF (X,XXX kWh/MG). The energy intensity analysis (DWR Table O-2) is located in Appendix E.

6.11.3 Energy Savings Contract
The City prides itself on being leaders in environmental action, responsible growth and a sustainable future. The City installed solar photovoltaic systems in three locations, including at the City WRF, under an Energy Services Contract with OPTERRA Energy Services (dated May 22, 2020, and amended April 20, 2021). OPTERRA has guaranteed energy savings from the project for 20 years in accordance with the Contract. The actual savings for March 2021 through August 2025 was approximately $1,355,000.

The energy savings from this program are not accounted for in DWR Table O-1B or DWR Table O-2. 79 2025 URBAN WATER MANAGEMENT PLAN
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CHAPTER 7 WATER SERVICE RELIABILITY AND DROUGHT

RISK ASSESSMENT
The UWMPA requires that the UWMP address the reliability of the agency’s water supplies. This includes supplies that are vulnerable to seasonal or climatic variations. In addition, an analysis must be included to address supply availability in a single-dry-year and in a five-consecutive-year drought. 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.

7.1 Introduction
The City potable water supply is purchased or imported water sources, mainly SWP water (from the Delta) purchased from the Napa County FCWCD and from the City of Vallejo. Refer to Appendix A for the City’s demonstration of reduced Delta reliance.

The following factors affect water supply reliability and may pose an opportunity for inconsistency in supply.
 Legal: The SWP contract expires in 2035 with provisions for extensions. The agreement with Vallejo does not have an expiration; however, Vallejo Treated Water must be purchased annually by a specific date.
 Environmental: The United States Fish and Wildlife Service and the National Marine Fisheries Service have operational rules that limit exports from the Delta for protection of several fish species (such as the Delta Smelt) per the Endangered Species Act.
 Water Quality: The SWRCB has established salinity and other water quality objectives that can limit exports from the Delta.
 Climatic: Drought conditions can limit exports from the Delta.

7.2 Constraints of Water Sources
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.
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There are two aspects of supply reliability that can be considered. The first relates to immediate service needs and is primarily a function of the availability and adequacy of the supply facilities. The second aspect is climate-related and involves the availability of water during mild or severe drought periods.

There are a variety of factors that can affect water supply reliability. The factors that might result in supply reliability issues include water quality and climatic changes.

7.2.1 Water Supply Quality
The UWMPA requires that the UWMP include a discussion of water quality impacts on the reliability of an agency’s water supplies. As indicated in Section 7.1, water quality may affect Delta supply reliability.

The City’s drinking water meets all applicable water quality regulations. The Annual Consumer Confidence Report for the City’s service area in year 2024 can be found in Appendix F.

7.2.2 Climate Change
Climate change is likely to add uncertainties to supply planning and future supply availability. Considering reductions in per capita use and projected demands, the City continues to balance a cautious optimism with a long-term strategy for sustainable sources of supply.

As stated in Chapter 4, the altered climate patterns in California creating hotter days and longer heat waves will increase customer water use and evaporative water losses. Extended drought periods are expected to become both more frequent, and more severe, which could lead to reduced rainfall and snowpack. Higher temperatures and decreased precipitation will result in drought, making wildfires more frequent, more severe, and harder to fight with less water supplies. Wildfires, followed by flooding, mean more landslides and mudslides, further impacting water supply reliability. Creating defensible space as well as slope stabilization and erosion prevention near critical infrastructure will be important for preserving supplies.

Efficient use of water is paramount in the City’s effort to adapt to climate change. Technology and equipment to appropriately monitor and manage water supplies will be critical. Ensuring that pipes are appropriately sized and upgraded to minimize water loss is equally important. Redundancy in source of supply will provide operational flexibility in the event supplies are interrupted by fire, floods, earthquakes, or drought. Climate change effects such as drought, wildfire, and temperature fluctuations may all contribute to a degradation of water quality over time.

7.2.3 Potential Supply Constraints
This section considers the State’s programs that could impact water management planning in the future.

7.2.3.1 Sacramento Water Allocation Model
Sacramento Water Allocation Model (SacWAM) is a hydrologic and system operations model developed by the Stockholm Environment Institute and SWRCB to assess potential revisions to instream flow and other requirements in the Bay-Delta watershed, including the current Sacramento/Delta review and update of the Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta Estuary (Bay-Delta Plan).
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Stream flows estimated by SacWAM may be used to inform various types of analyses as part of the SWRCB’s assessment of potential alternative regulatory requirements:
 Estimates of flow conditions under a range of alternative regulatory requirements.  Estimates of changes in water diversions for use in an evaluation of the impacts of alternative regulatory requirements on agricultural resources, water suppliers, and groundwater.  Estimates of changes in reservoir storage for use in an analysis of the impacts of alternative regulatory requirements on hydropower generation, recreation, fisheries and water supply.  To inform other analyses or models, such as delta hydrodynamics, temperature and economic.

Refer to www.waterboards.ca.gov/waterrights/water_issues/programs/bay_delta/sacwam/ for additional information.

7.2.3.2 Incidental Take Permit
The 2024 SWP Incidental Take Permit (ITP) was issued by the California Department of Fish and Wildlife.

The permit covers five species protected under the California Endangered Species Act, including Delta smelt, longfin smelt, white sturgeon, winter-run Chinook salmon and spring-run Chinook salmon. The ITP regulates pumping plant exports, including the Barker Slough Pumping Plant (BSPP), through 2034. The BSPP diverts water from Barker Slough into the NBA.

Refer to https://cwc.ca.gov/Home/News/News-Releases/2024/Nov-24/New-Operating-Permit-Issued-forCalifornias-State-Water-Project for additional information.

7.2.3.3 North Bay Aqueduct Alternative Intake Project
DWR proposes to construct and operate an alternative intake on the Sacramento River and connect it to the existing NBA system by a new segment of pipe. The proposed alternative intake would be operated in conjunction with the existing NBA intake at Barker Slough. The proposed project would be designed to improve water quality and to provide reliable deliveries of SWP supplies to its contractors, including the Napa County FCWCD.

Refer to https://viewperformance.deltacouncil.ca.gov/index.php/pm/north-bay-aqueduct for additional information. The NBA alternative intake project is currently on hold.

7.2.4 Potential Alternative Sources
The City also uses other supplemental imported water sources as described in Section 6.1.3. The availability of these supplemental water supplies varies from year-to-year; therefore, supplemental water supplies have not been included in this water supply reliability assessment.

In order to diversify its water sources and improve local control over the water supply, the City has been exploring various long-term water supply options as described in Section 6.8. 82 2025 URBAN WATER MANAGEMENT PLAN
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7.3 Water Supply Reliability by Type of Year
This section considers the City’s water supply reliability during three water scenarios: average year, singledry-year, and five-consecutive-year drought. An average year is also referred to as a "normal" year.

These scenarios are defined as follows:
 Average Year: A year, or an averaged range of years, that most closely represents the average water supply available to the City. Generally, a year in the historical sequence that most closely represents median runoff levels and patterns. It is defined as the median runoff over the previous 30 years or more. This median is recalculated every 10 years.
 Single-Dry-Year: The year that represents the lowest water supply available to the City. Generally considered to be the lowest annual runoff for a watershed since the water-year beginning in 1903.

Suppliers should determine this for each watershed from which they receive supplies.  Five-Consecutive-Year Drought: The period that represents the driest five-year historical sequence for the City. Generally considered to be the lowest average runoff for a five-consecutive-year period for a watershed since 1903.

7.3.1 Basis of Water Year Data
Table 7-1 contains the water supply available for each of the water year types, as a percentage of the average water year, but the water type years have not been included. The volume available for each year type are based on the following assumptions:
 “Table A” Allotment: Assumed to be 54 percent, 5 percent, and 27 percent of the full contracted volume (5,200 AFY) for average, single-dry, and five-consecutive-year drought water types, respectively. The percent volume available for each water year type is based on the long-term average allocation (2025 Draft State Water Project Final Delivery Capability Report, DWR), 2014 allocation, and 1987 to 1992 average allocation, respectively.
 Article 21 Water: Assumed to be 568 AFY, 0 AFY, and 216 AFY for average, single-dry, and fiveconsecutive-year drought water types, respectively. This is based on the 2012 to 2020 average allocation, 2014 allocation, and 2012 to 2016 average allocation, respectively.  Vallejo Permit Water: Assumed to be the full contracted volume (500 AFY) for all water year types.  Vallejo Treated Water: Assumed to be full contracted volume (628.6 AFY) for average year water type and to be reduced by 20 percent for single-dry and consecutive dry year water types based on City of Vallejo’s WSCP Stage 2.
 Vallejo Emergency Water: Assumed to be 0 AFY for average year water type (not available when the City’s “Table A” allotment is not curtailed) and full contracted volume (500 AFY) for single-dry and consecutive dry years water types.
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Table 7-1 Basis of Water Year Data (Reliability Assessment) Optional Submittal Table 7-1 Retail: Basis of Water Year Data (Reliability Assessment) Year Type Base Year Quantification of Available Supplies Volume Available (AF) % of Average Supply
Average Year. See notes 4,505 100%
Single-Dry Year. See notes 1,763 39%
Consecutive Dry Years 1st Year. See notes 3,123 69%
Consecutive Dry Years 2nd Year. See notes 3,123 69%
Consecutive Dry Years 3rd Year. See notes 3,123 69%
Consecutive Dry Years 4th Year. See notes 3,123 69%
Consecutive Dry Years 5th Year. See notes 3,123 69%
NOTES: Base years vary by source. See narrative in Section 7.3.1 for details on base years.

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

The projected demand and supplies are compared in 5-year increments in Table 7-2, Table 7-3, and Table 7-4 for the three scenarios defined above. The demand is based on the total water use from Table 4-2.

The supply is based on the reasonably available volume from Table 6-9. The supply is adjusted by the percent of average supply for the year type from Table 7-1.

7.4.1 Normal Year
Table 7-2 provides an estimate of the projected normal year supply and demand totals.

Table 7-2 Normal Year Supply and Use Comparison
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals
(from Submittal Table 6-9 R) 4,505 4,505 4,505 4,505 4,505 Use totals
(from Submittal Table 4-2 R) 2,381 2,448 2,514 2,581 2,647 Surplus/(shortfall) 2,123 2,057 1,990 1,924 1,857
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7.4.2 Single-Dry-Year
Table 7-3 provides an estimate of the projected single-dry-year supply and demand totals. As shown in Table 7-3, the City anticipates it can augment supply during a shortfall using existing water purchase agreement contracts. Demand reductions due to water shortage stage rationing measures are not included in the single-dry-year demand estimates (refer to Table 8-3).

Table 7-3 Single Dry Year Supply and Use Comparison
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals. 1,763 1,763 1,763 1,763 1,763
Use totals. 2,381 2,448 2,514 2,581 2,647
Surplus/(shortfall). (618) (685) (752) (818) (885)
OPTIONAL Planned WSCP Actions
WSCP - supply augmentation
benefit. 618 685 752 818 885
WSCP - use reduction savings
benefit. 0 0 0 0 0
Revised Surplus/(shortfall). 0 0 0 0 0
NOTES: The demand is based on the total water use from Table 4-2. The supply is based on the reasonably available volume from Table 6-9. The supply is adjusted by the percent of average supply for the year type from Table 7-1.

7.4.3 Five-Consecutive-Year Drought
Table 7-4 provides an estimate of the projected five-consecutive-year drought supply and demand totals.

The City anticipates it can augment supply during a shortfall, as needed, using existing water purchase agreement contracts. Demand reductions due to water shortage stage rationing measures are not included in the five-consecutive-year drought demand estimates (refer to Table 8-3). 85 2025 URBAN WATER MANAGEMENT PLAN
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Table 7-4 Multiple Dry Years Supply and Use Comparison
Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
First year
Supply totals. 3,123 3,123 3,123 3,123 3,123
Use totals. 2,381 2,448 2,514 2,581 2,647
Surplus/(shortfall). 742 675 608 542 475
OPTIONAL Planned WSCP Actions
WSCP - supply augmentation benefit. 0 0 0 0 0
WSCP - use reduction savings benefit. 0 0 0 0 0
Revised Surplus/(shortfall). 742 675 608 542 475
Second year
Supply totals. 3,123 3,123 3,123 3,123 3,123
Use totals. 2,381 2,448 2,514 2,581 2,647
Surplus/(shortfall). 742 675 608 542 475
OPTIONAL WSCP Actions.

WSCP - supply augmentation benefit. 0 0 0 0 0
WSCP - use reduction savings benefit. 0 0 0 0 0
Revised Surplus/(shortfall). 742 675 608 542 475
Third year
Supply totals. 3,123 3,123 3,123 3,123 3,123
Use totals. 2,381 2,448 2,514 2,581 2,647
Surplus/(shortfall). 742 675 608 542 475
OPTIONAL Planned WSCP Actions.

WSCP - supply augmentation benefit. 0 0 0 0 0
WSCP - use reduction savings benefit. 0 0 0 0 0
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Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Revised Surplus/(shortfall). 742 675 608 542 475
Fourth year
Supply totals. 3,123 3,123 3,123 3,123 3,123
Use totals. 2,381 2,448 2,514 2,581 2,647
Surplus/(shortfall). 742 675 608 542 475
OPTIONAL Planned WSCP Actions.

WSCP - supply augmentation benefit. 0 0 0 0 0
WSCP - use reduction savings benefit. 0 0 0 0 0
Revised Surplus/(shortfall). 742 675 608 542 475
Fifth year
Supply totals. 3,123 3,123 3,123 3,123 3,123
Use totals. 2,381 2,448 2,514 2,581 2,647
Surplus/(shortfall). 742 675 608 542 475
OPTIONAL Planned WSCP Actions.

WSCP - supply augmentation benefit. 0 0 0 0 0
WSCP - use reduction savings benefit. 0 0 0 0 0
Revised Surplus/(shortfall). 742 675 608 542 475
NOTES: The demand is based on the total water use from Table 4-2. The supply is based on the reasonably available volume from Table 6-9. The supply is adjusted by the percent of average supply for the year type from Table 7-1. 87 2025 URBAN WATER MANAGEMENT PLAN
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7.4.4 Hazard Mitigation Plan
Napa County’s Multi-Jurisdictional Hazard Mitigation Plan is available for review at https://mitigatehazards.com/napa-county-mjhmp/documents/. Refer to Section 8.7 for additional details.

7.5 Drought Risk Assessment
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… (3) A comparison of the total water supply sources available to the water supplier with the total projected water use for the drought period. [Emphasis added] (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.

Table 7-5 presents a summary of the City’s water supply DRA from 2026 through 2030 The supplies are based on the following conservative assumptions:
 “Table A” Allotment: Assumed to be 22 percent of the full contracted volume (5,200 AFY) for all years.

The percent volume available is based on the 6-year drought allocation of 22 percent in the Draft 2025 Draft State Water Project Final Delivery Capability Report, DWR.  Article 21 Water: Assumed to be 242 AFY the first year and then unavailable the remaining years based on.
 Vallejo Permit Water: Assumed to be the full contracted volume (500 AFY) for all years.  Vallejo Treated Water: Assumed to be the contracted volume (628.6 AFY) reduced by 20 percent for all years based on City of Vallejo’s WSCP Stage 2.
 Vallejo Emergency Water: Assumed to be full contracted volume (500 AFY) for all years.

As shown in Table 7-5, the City anticipates it can supply all its water demands by purchasing supplemental imported water through existing agreements through the planning horizon (2030). Use reduction savings are not quantified in Table 7-5 (refer to Table 8-3).
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Table 7-5 Five-Year Drought Risk Assessment
Submittal Table 7-5 Retail: Five-Year Drought Risk Assessment Water Code Section 10635(b)(3)
2026 Total
Total Water Use (AF) 2,264
Total Supplies (AF) 5,801
Surplus/Shortfall w/o WSCP Action 3,536
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) WSCP - supply augmentation benefit (AF) 0
WSCP - use reduction savings benefit (AF) 0
Revised Surplus/(shortfall) 3,536
2027 Total
Total Water Use (AF) 2,294
Total Supplies (AF) 5,559
Surplus/Shortfall w/o WSCP Action 3,265
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) WSCP - supply augmentation benefit (AF) 0
WSCP - use reduction savings benefit (AF) 0
Revised Surplus/(shortfall) 3,265
2028 Total
Total Water Use (AF) 2,323
Total Supplies (AF) 5,559
Surplus/Shortfall w/o WSCP Action 3,236
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) WSCP - supply augmentation benefit (AF) 0
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Submittal Table 7-5 Retail: Five-Year Drought Risk Assessment Water Code Section 10635(b)(3)
WSCP - use reduction savings benefit (AF) 0
Revised Surplus/(shortfall) 3,236
2029 Total
Total Water Use (AF) 2,352
Total Supplies (AF) 5,559
Surplus/Shortfall w/o WSCP Action 3,207
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) WSCP - supply augmentation benefit (AF) 0
WSCP - use reduction savings benefit (AF) 0
Revised Surplus/(shortfall) 3,207
2030 Total
Total Water Use (AF) 2,381
Total Supplies (AF) 5,559
Surplus/Shortfall w/o WSCP Action 3,178
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) WSCP - supply augmentation benefit (AF) 0
WSCP - use reduction savings benefit (AF) 0
Revised Surplus/(shortfall) 3,178
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7.6 Regional Supply Reliability
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.

The City is expanding the use of local water resources (recycled water, see Section 6.5.5) and reducing waste through the implementation of DMMs (see Chapter 9). The City's efforts help to reduce the need to purchase water from other agencies.
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CHAPTER 8 WATER SHORTAGE CONTINGENCY PLAN
In response to the severe drought of 2012-2016, legislation in 2018 created a WSCP mandate replacing the water shortage contingency analysis under former law. The new requirements are more prescriptive to have consistency throughout California. The City Municipal Code Water Conservation Plan Chapter 13.14, included in Appendix G, serves as the City’s WSCP and may be amended as needed without amending this 2025 UWMP.

In the event any provision of this Chapter or the Water Conservation Plan (Appendix G) conflicts or overlaps with any mandatory State regulation related to water conservation, the most stringent shall apply.

8.1 WSCP Overview
The City’s WSCP details the stages of actions to be taken during a reduction in available water supply.

These actions are broken up based upon six possible stages of water shortage. Reductions in supply are most frequently associated with drought, but could also be the result of flooding, major fire emergencies, earthquakes, regional power outages, water contamination, and any other situation that could impact the City’s water supply.

The goal of a WSCP is to have a procedure for managing and mitigating shortages allowing the City to respond in an efficient and timely manner. Water shortage response actions include supply augmentation, demand reduction, operational changes, and mandatory prohibitions to address shortage levels. The following sections summarize the City’s water shortage stages and the measures employed during each stage, as outlined in the WSCP.

8.2 Stages of Action
The stages of action in response to water supply shortages for the City are as follows:
 Level 1: Voluntary Conservation.
 Level 2: Water Alert.
 Level 3: Water Emergency.
 Level 4: Critical Water Emergency.
 Level 5: Severe Water Emergency.
 Level 6: Catastrophic Interruption of Water Supplies.

The City uses the standard six levels of water shortage and corresponding percent shortage range, including greater than 50 percent reduction in water supply, therefore Table 8-1 is left blank. Detailed descriptions of each stage of action are included in the Water Conservation Plan (Appendix G). 92 2025 URBAN WATER MANAGEMENT PLAN
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Table 8-1 Cross Reference for Standard vs. Supplier Shortage Levels Submittal Table 8-1: Cross-reference for Standard vs Supplier Shortage Levels Water Code Section 10632(a)(3)(B)
Check the box if the Supplier uses the Standard six levels of water shortage.

Proceed to the next table.

Standard Shortage
Levels
Percent Shortage
Range
Suppliers Shortage
Levels
Percent Shortage
Range
1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 >50%

8.3 Supply Augmentation
The UWMPA requires that the UWMP include an urban water shortage contingency analysis that addresses methods to reduce consumption.
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Table 8-2 contains supply augmentation methods and other actions by water shortage stage. Expanding the public information campaign is an effective first step to reduce consumption before implementing emergency supply augmentation.
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Table 8-2 Supply Augmentation and Other Actions
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
Volume or Reference
Percentage
Shortage Gap Reduction
Value
(May be a range) (AF)
2-6 Other Purchases. Volume Varies
Dry year agreements and
turnback pool purchases
vary by year.
1-6 Expand Public Information Campaign. Percentage <5%
2-6 Other Actions (describe). Percentage <5% Offer Water Use Surveys. 1-6 Other Actions (describe). Percentage <5% Decrease Line Flushing. 3-6 Other Actions (describe). Percentage <5% Increase Water Waste Patrols.
4-6 Other Actions (describe). Percentage <5%
Moratorium or Net Zero
Demand Increase on New
Connections.
5-6 Other Actions (describe). Percentage 0%
Refer to description of
previous supply
augmentation methods and
actions.
6 Other Actions (describe). Percentage 0%
Refer to description of
previous supply
augmentation methods and
actions.
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8.4 Demand Reduction
Table 8-3 contains demand reduction actions and the water shortage stage when they are enacted. These prohibitions are detailed in the Water Conservation Plan (Appendix G). Additionally, the City Municipal Code contains the Water Waste Prohibitions Ordinance (Section 13.14.060) (see Appendix G). This Water Waste Prohibitions Ordinance is in place at all times and is not dependent upon a water shortage for implementation. Although it is difficult to estimate the volume of savings for each action, the City expects to meet required reductions through a combination of response actions in conjunction with outreach and communication efforts to the extent necessary to mitigate any impacts from a water shortage. 96 2025 URBAN WATER MANAGEMENT PLAN
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Table 8-3 Demand Reduction Actions
Submittal Table 8-3 Retail: Demand Reduction Actions
Water Code Section 10632(a)(4)(B),(D), 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
Penalty, Charge, or
Other
Enforcement? Volume or
Percentage
Shortage Gap
Reduction Value
(May be a range) (AF)
1-6 Landscape - Limit landscape
irrigation to specific times. Percentage <5% No
1-6 Provide Rebates on Plumbing
Fixtures and Devices. Percentage <5%
1-6 Other. Percentage <5% No
2-6 Landscape - Prohibit certain types of
landscape irrigation. Percentage <5% Yes
2-6 Other. Percentage <5% Yes
2-6 Other - Prohibit use of potable water
for washing hard surfaces. Percentage <5% Yes
2-6 Landscape - Prohibit certain types of
landscape irrigation. Percentage <10% Yes
2-6 Other water feature or swimming
pool restriction. Percentage <5% Yes
2-6
Water Features - Restrict water use
for decorative water features, such
as fountains.

Percentage <5% Yes
3-6 Landscape - Other landscape
restriction or prohibition. Percentage <5% Yes
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Submittal Table 8-3 Retail: Demand Reduction Actions
Water Code Section 10632(a)(4)(B),(D), 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
Penalty, Charge, or
Other
Enforcement? Volume or
Percentage
Shortage Gap
Reduction Value
(May be a range) (AF)
4-6 Other. Percentage <5% Yes
4-6 CII - Other CII restriction or
prohibition. Percentage <5% Yes
5-6 Other. Percentage <10% Yes
6 Other. Percentage 0%
Refer to description of
previous demand
reduction actions.

Yes
1-6 Other. Percentage 5%
Prohibition on CII
Nonfunctional Turf
Irrigation (phased between
2027 and 2029).

Yes
NOTES: Refer to City Municipal Code Water Conservation Plan Chapter 13.14 for details on demand reduction actions. 98 2025 URBAN WATER MANAGEMENT PLAN
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8.5 Annual Water Supply and Demand Assessment Procedures The annual water supply and demand assessment identifies key data and methods for determining the supply reliability each year. The annual assessment is due to DWR on or before July 1 of each year, as required by CWC Section 10632.1. The assessment assumes the year following the planning calendar year is a dry year.

The annual supply and demand assessment will include:
 Anticipated shortage.
 Triggered shortage response actions.
 Compliance and enforcement actions.
 Communication actions.
 Review of assets.

8.5.1 Timeline
The timeline for the annual supply and demand assessment is listed below and is subject to change.  Preparation of draft supply and demand analysis – February.  Submit and present assessment to City Manager – March.  Update and finalize assessment – April.
 Receive City Manager approval – May or June.
 Annual supply and demand assessment – Due to DWR July 1.

8.5.2 Decision-Making Process
The steps in the decision-making process that the City will use each year to determine and subsequently report to the state are listed below.

1. Determine supply available, infrastructure constraints, and expected demand.

2. Compare supply and demand and decide on the water supply reliability for the current year and one dry year.

3. Present the findings and recommendations of the Annual Assessment Report to the City Manager.

4. Prepare and submit the Annual Assessment Report to the state.

5. Determine the shortage levels and other conservation matters, including, but not limited to any restrictions in the number of new service connections allowed annually for any or all portions of the City service area.

6. Maintenance and Utilities Director or a designated representative implements the provisions of the WSCP.
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8.5.3 Key Data and Methodologies
The key data inputs and assessment methodology used to evaluate the City’s water supply reliability for the current year and one dry year, include the following:
 Current year unconstrained demand, considering weather, growth, building permit trends, and other influencing factors, such as policies to manage current supplies to meet demand objectives in future years, as applicable.
 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 City.
 Existing infrastructure capabilities and plausible constraints.  A defined set of locally applicable evaluation criteria that are consistently relied upon for each annual water supply and demand assessment.
 A description and quantification of each source of water supply.  The California Drought Monitor.
 Precipitation on a calendar and weather year basis.
 Any potential State or regional actions related to drought and water use restrictions.

8.5.3.1 Water Supply
The annual assessment will evaluate the current year available and one subsequent dry year. The available water supplies for the City shall be quantified each year by summing the available water supplies.

Potential production constraints, hydrological, and regulatory conditions will be considered.

8.5.3.2 Unconstrained Customer Demand
Water demand/consumption for the previous year shall be quantified by summing the meter usage of each customer class for the previous year. Customer water demands shall be projected for the upcoming year based on the previous year’s water consumption and the projected population growth.

8.5.3.3 Planned Water Use for Current Year Considering Dry Subsequent Year The planned water use for the current year is not impacted by an anticipated subsequent dry year. When SWP or Vallejo supplies are reduced, the City can purchase supplemental imported water sources.

8.5.3.4 Infrastructure Considerations
Infrastructure projects anticipated for the upcoming year that could impact water supply will be evaluated for the timeframe the projects will impact supply. The available water supply will be increased or reduced accordingly for each month.
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8.5.3.5 Evaluation Criteria
Evaluation of the appropriate shortage level will include, but not be limited to, the following considerations:
 Current and recent trends in Delta levels.
 Other hydrological or other local conditions indicative of water supply available.  Previous winter’s precipitation.
 Previous year’s water demand.
 Current and anticipated demand for water by City customers.  Current and anticipated supply of City water sources.  Damage to the City’s water system.
 Predicted weather patterns.
 Water content of the snowpack.
 Climate change impacts.
 California Drought Monitor.
 Current or pending state and regional water use efficiency or drought related actions.

If the available water supply is greater than the anticipated customer demand for the upcoming year, then the City does not need to take any further action. If the anticipated customer demand for the upcoming year is greater than the available water supplies, or that additional conditions exist (such as a State declared drought emergency), the City can initiate water conservation actions as detailed in the WSCP.

8.5.3.6 Triggering Mechanisms for Shortage Levels
The triggering mechanisms to use as guidelines for the shortage levels include:
 System malfunction resulting in up to the percent shortage of a level or catastrophic interruption of water supplies.
 City or state declaration due to drought.
 Federal, state, or local disaster declaration that may impact water supplies.  City determination.
 Unplanned City water system maintenance.

The City may impose any of the shortage levels based upon facts and circumstances which may not have been otherwise anticipated in this chapter or WSCP.
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8.6 Catastrophic Supply Intervention
The UWMPA requires that the City develop stages of action to be undertaken during a catastrophic interruption of water supply or the City’s water treatment facilities that could include flooding, major fire emergencies, regional power outage, an earthquake, water contamination, and acts of sabotage. In response to these possibilities, the City developed an Emergency Response Plan (ERP), which identifies the following goals:
 Rapidly restoring water service after an emergency.
 Ensuring adequate water supply for fire suppression.
 Minimizing water system damage.
 Minimizing impact and loss to customers.
 Minimizing negative impacts on public health and employee safety.  Providing emergency public information concerning customer service.

The ERP includes emergency planning process and water system information, including mutual aid agreements, emergency resources, emergency water supply calculations, and information on alternate water supplies. The ERP also contains emergency response chain-of-command information, concepts of operation, response and notification procedures, water quality sampling procedures, emergency response training, and action plans.

8.7 Hazard Mitigation Plan
The City is located in the seismically active San Francisco Bay region. The City’s main water transmission main is located less than a half mile from the West Napa Fault; however, all components of the City’s water system are vulnerable to seismic activity.

Napa County is in the process of updating the Multi-Jurisdictional Hazard Mitigation Plan. Refer to https://mitigatehazards.com/napacountymjhmp/ for updates. The Hazard Mitigation Plan may be updated at any time. The most recent Hazard Mitigation Plan shall apply to the current WSCP.

8.8 Revenue and Expenditure Impacts
The City is fully metered, and City customers are billed volumetrically. Therefore, the City may experience a decrease in revenue with reduced water sales during a water shortage. Although the variable costs of supplying water will be reduced as water usage decreases, the fixed costs will remain constant. The variable costs are linked to the purchase of imported water. The fixed costs include plant operations, salaries, debt service, capital projects, and other similar expenses.

Additional costs during water shortage situations could be associated with increased monitoring, efficiency incentives, and outreach, namely due to an increase in the hours required to monitor customer accounts and enforce reduction actions. The additional costs associated with this effort, however, are not expected to significantly impact revenues and expenditures.

To overcome a reduction in revenue due to a water shortage the City could adjust the water rates or develop a reserve fund.
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8.8.1 Use of Financial Reserves
The City has funding reserves established that can be utilized for a financially qualifying event, such as providing for the continued operation of the water system in the event of a decline in water service revenue.

8.8.2 Other Measures
The City will consider postponement of capital improvements and operational measures to temporarily reduce power and chemical costs as a means to overcome impacts from water shortage contingency planning to revenues and expenditures.

8.9 Monitoring and Reporting
The City is fully metered, and City customers are billed volumetrically. The City uses these meters to monitor City-wide use, individual customer use, and track actual reductions in water use. By periodic review of customer water use, the City is able to track the effectiveness of the shortage level reduction actions, educate customers regarding water use, and also identify leaks and other areas where additional conservation may be possible.

Monitoring will be used to ensure appropriate data is collected, tracked, and analyzed for purposes of determining:
 Customer compliance.
 Effectiveness of reduction actions.
 Potential leaks in the distribution system.
 Accurate monthly demand data for the annual supply and demand assessment.

Monitoring and reporting key water use metrics is fundamental to water supply planning and management and will be a critical part of the annual supply and demand assessment. Monitoring is also essential to ensure that the shortage level response actions achieve their intended water use reduction purposes or to determine if improvements or new actions are needed. Monitoring for customer compliance tracking is useful in enforcement actions. It should be noted that timing, frequency, and metrics will likely be variable, depending on the water shortage level and enforcement action logistics.

The City can compare meter data with water use in prior months and during non-drought years to determine if it is achieving specific percentage goals for water consumption associated with the drought response levels. If the goals are not being met, the City can implement additional shortage response actions at any time.

8.10 WSCP Refinement Procedures
To evaluate the effectiveness of the WSCP and to ensure that procedures and practices developed under the WSCP are adequate and are being implemented properly, the City will perform audits of the program on a periodic basis, at least every 5 years in coordination with the UWMP update.

The City will perform a thorough review of monitoring and reporting program data to determine the effectiveness of the reduction actions and whether the procedures and provisions of the WSCP need to be 103
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revised. The review will compare the expected percent demand reduction against actual reductions and shortage response actions.

City staff, customers, and other interested parties may have suggested actions or procedures to refine the WSCP. The City will evaluate these on a case-by-case basis for incorporation into the WSCP.

8.11 WSCP Adoption, Submittal, and Availability
Per the CWC, the following steps shall be performed prior to adoption of the WSCP:
 The City will issue a notification of a public hearing to customers, the county, and public. » The City will publish notification of the public hearing in a local newspaper for two consecutive weeks.
» The City shall hold a public hearing to obtain public input. » Following the public hearing or a subsequent meeting, the City Council shall formally adopt the WSCP.
» Per CWC Section 10632 (a)(c), the City will make the WSCP available on the City’s website (www.americancanyon.gov) within 30 days of the adoption.  The City may choose to amend the WSCP at any time. If so, each of the steps above must be followed. 104
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CHAPTER 9 DEMAND MANAGEMENT MEASURES
The UWMPA requires that the UWMP involve a comprehensive discussion of the agency’s water conservation measures.
10631(e)(1)(A) …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.

This chapter presents details of the DMMs contained in the UWMPA, as well as the City’s existing and planned efforts to further develop their water conservation program. The City is committed to water conservation and has implemented several policies and on-going programs that promote and encourage water conservation.

The UWMPA was amended in 2014 to streamline DMMs from 14 specific measures to six more general requirements and an "other" category. Brief descriptions of the City’s current and planned implementation of DMMs are included in the following sections.

9.1 Water Waste Prevention Ordinances
This DMM involves adoption of an ordinance prohibiting water waste. The City Municipal Code contains the Water Waste Prohibitions Ordinance (Section 13.14.060) (see Appendix G). This Water Waste Prohibitions Ordinance is in place at all times and is not dependent upon a water shortage for implementation. See Chapter 8 and the Water Conservation Plan Chapter 13.14 (Appendix G) for detailed information on stages of action, prohibitions of end uses, and penalties.

In addition, the City Municipal Code Chapters 16.14 (Water-Efficient Landscaping under Building and Construction Codes) and 19.22 (Water-Efficient Landscaping under Zoning) summarize additional ongoing conservation efforts of the City (see Appendices H and I).

9.1.1 Implementation over the Past Five Years
The City has recorded water waste violations over the past five years. 105
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9.1.2 Planned Implementation
The City will continue to enforce this DMM. The effectiveness of this DMM will be evaluated by monitoring the number of warnings and offenses. If an area is determined to have excessive violations, the City could implement a specific public outreach program informing the public about the Water Waste Prohibitions Ordinance.

9.2 Metering
Installing water meters and billing for actual water use provides a strong incentive for customers to use less water and equalizes service cost for each customer to their actual use (high water users would pay a more equitable share of the system costs). Water metering can reduce exterior landscape water use and can also achieve a modest reduction in interior water use.

9.2.1 Implementation Over the Past Five Years
All of the City customers are metered and are billed on a monthly basis. In addition, the City supply turnouts are also metered.

The City uses Advanced Metering Infrastructure (AMI) to help conserve and prevent water loss. To empower community members, the City provides a Customer Water Usage Portal through AMI to offer complete transparency over the individual volume of water consumed. This intelligent tool has several capabilities, including daily, weekly, and monthly water tracking, comparison data, and the ability to set up alerts to notify customers of high water consumption.

9.2.2 Planned Implementation
The best way to evaluate the effectiveness of metering is periodic review of customer water use. The City could contact individual customers determined to have high water use.

The City will implement performance measures for CII water use, as required by the Making Conservation a California Way of Life regulation, including a classification system, use of dedicated irrigation meters (DIMs) or “in-lieu” water management technologies for qualifying large landscapes, and BMPs for qualifying customers.

9.3 Conservation Pricing
Water conservation is encouraged through a pricing system that rewards customers who use less water with financial incentives, while high water users are charged a higher rate. Often this is implemented through a tiered pricing system.

9.3.1 Implementation Over the Past Five Years
The City has an increasing-tier water rate schedule for single-family residential use. These metered water rates consist of a fixed meter charge as well as a variable charge per unit (where one unit equals 748 gallons) based on usage (see Appendix J).
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The City bills residential user classes for sewer service on a flat rate schedule (see Appendix J). The City charges commercial customers for sewer service both a flat service charge and volumetric rate based on water consumption (see Appendix J).

9.3.2 Planned Implementation
Water rates are approved through 2029. The water rates will continue to be in effect until new rates are adopted.

9.4 Public Education and Outreach
Examples for public education and outreach for water demand management can include coordination with other agencies and provision of programs promoting water conservation, speakers for the media or community groups, school education programs, public service announcements, water conservation bill inserts, information booths at public events, websites, newsletters and newspaper articles, rebates, and daily water use comparisons on customer’s bills.

9.4.1 Implementation Over the Past Five Years
The City has implemented this DMM through the provision of flyers, brochures, and information packets to customers, as well as providing bill inserts promoting water conservation and providing information on the City website.

The City also supplies free individual items for indoor conservation, including adjustable massage showerheads, shower timers, faucet aerators, toilet dye kits to detect leaks, and replacement toilet flapper valves, which are available for pick up at City Hall.

9.4.2 Planned Implementation
Public information can be one of the best tools to conserve water. The City will continue to promote water conservation.

9.5 Programs to Assess and Manage Distribution System Real Loss This DMM focuses on the water distribution system itself, and includes water audits, leak detection, and repair. The first step in a water audit is relatively straightforward, involving comparison of the amount of water produced with the amount of water delivered to customers. The difference is termed “unaccounted water,” which includes actual losses (leaks) in the distribution system, authorized but unmetered use (e.g., hydrant flushing and firefighting), unauthorized water use, and meter error.

9.5.1 Implementation Over the Past Five Years
When a complaint is lodged regarding a potential water leak, the City takes swift action to identify and repair the given leak as warranted.

The City's ongoing water main replacement program is reducing water loss through addressing leaking pipes and service connections. The Annual Water Main Replacements project consists of three components: 1) replacement of 2-inch and 4-inch water mains with 8-inch to increase the reliability in the 107
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system as well as improve fire flow capabilities; 2) replacement of deteriorated water mains throughout the City; and 3) replacement of all non-PVC pipelines. The City prioritizes the water main replacement program annually based on need and benefits.

9.5.2 Planned Implementation
The best way to evaluate the effectiveness of this program is to compare water production data at the WTP with water consumption from the City’s customers. To improve the effectiveness, the City should continue to review data and identify leaks for repair, perform an annual review of the AWWA audit information to determine if a full-scale system audit is warranted, and perform distribution leak detection when warranted and cost-effective.

The 2024 real and apparent water loss is below the 2028 real and apparent water loss standards (see Table 4-6). The City will maintain water losses to achieve compliance with the Water Loss Performance Standards beginning January 1, 2028.

9.6 Water Conservation Program Coordination and Staffing Support
This DMM entails designating a Water Conservation Coordinator responsible for managing water conservation efforts, preparing conservation reports, promoting water conservation to agency staff, and evaluating the results of efforts. The Water Conservation Coordinator tasks may include, but are not limited to, monthly tracking of production versus consumption, enforcement of water use restrictions, and implementation of conservation programs.

9.6.1 Implementation Over the Past Five Years
The City has not designated a Water Conservation Coordinator. The City’s water conservation program is a coordinated effort amongst various City departments, including, but not limited to, the City Manager’s office (Administrative Department), Public Works, Parks and Recreation, and Community Development.

9.6.2 Planned Implementation
The City will continue to implement the City’s water conservation program. The City could educate community volunteers to aid the City in water conservation efforts.

9.7 Other Demand Management Measures
The City will continue to evaluate implementation of new DMMs in the future.

9.7.1 Efficiency and Rebates
For residential and commercial/industrial customers, $100 rebates are offered for replacing a toilet that uses more than 1.28 gallons per flush with a high-efficiency toilet with WaterSense label.

The City also offers a “Cash for Grass” rebate for replacing grass with drip-irrigated, low water-use plants, and permeable hardscape. This program promotes water savings while encouraging sustainable 108
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landscaping suited to the City’s climate. The City offers $1 per square foot (sf) of turf removed for single-family residential (up to 750 sf) and for homeowner's association/multifamily/commercial/institutional (up to 2,500 sf).

The City promote rebates on the City’ website and through mailers and billing inserts.

9.7.2 Administrative Policies
The City implemented the following policies to promote water conservation:
 Zero Water Footprint (ZWF) Policy (Resolution 2011-33): This policy has a goal of no loss in reliability or increase in water rates for existing water service customers due to new demand for water within the City’s water service area. New developments must offset the amount of increased potable water consumption on a one-to-one basis. Developers are required to minimize demand (e.g., by using water efficient fixtures, installing water wise landscaping and irrigation) and utilize offset methods (e.g., contributing to the City’s existing conservation programs, converting an existing public use of potable water to recycled water). Since Year 2020, the City has had XX number of developments that conserved XXX amount of water by utilizing the ZWF Policy.  Municipal Code Chapter 13.10 New Water and Sewer Connections and Services: This Chapter limits new industrial water users within the City’s water service area to an average of 650 gallons per acre per day (gpad) and requires dual-plumbing with purple pipe. For use greater than 650 gpad, offset options include, but are not limited to, retrofit of existing residences with low flow fixtures, purchase of otherwise developable land as permanent open space, or acquisition of other water supply resources as provided for by a water supply analysis that follows the ZWF methodology.  Administrative Policy 2011-01 on the Management and Allocation of Raw Water: This policy has a goal of shifting the City’s raw water customers (new and existing) from the SWP supply to alternative supplies (e.g., recycled water) and also provides for the development of an agricultural water conservation program.
 Administrative Policy 2011-02 on the Management and Allocation of Recycled Water: This policy has a goal of providing recycled water as a substitute for potable water as a first priority to the City’s parks and then to other users for irrigation purposes. This policy establishes a framework for allocating the recycled water resource and encouraging the development of privately-owned seasonal, recycled water storage facilities.
 Administrative Policy 2011-03 on the Implementation of ZWF Policy: This policy has a goal of assigning or shifting commercial, industrial, and new residential water demands from the SWP supply to more reliable alternate sources of water. This policy describes the manner in which the City will consider and evaluate new development proposals and provides guidance on acceptable methods for offsetting new water demands within the existing water system or bringing new water supplies to the City.

9.8 Planned Implementation to Achieve Water Use Targets The City has met its 2020 target of 162 gpcd. The City will implement conservation measures, as needed, to comply with the Making Conservation a California Way of Life regulation (compliance effective January 1, 2027). In all of its conservation programs, the City will avoid placing a disproportionate burden on any customer sector.
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CHAPTER 10 PLAN ADOPTION, SUBMITTAL, AND

IMPLEMENTATION
The City prepared this 2025 UWMP during the fall of 2025 through summer of 2026. A completed UWMP checklist is included in Appendix K.

10.1 Inclusion of All 2025 Data
The 2025 UWMPs must include the water use and planning data for the entire year of 2025. The City is reporting on a calendar year basis and therefore, 2025 data includes the months of January to December 2025.

10.2 Notice of Public Hearing
A public hearing was held on August 18, 2026, prior to adoption of the UWMP at the Council Chambers of the City Hall, 4381 Broadway Street. Notices were provided to cities and counties, and the public. The public hearing provided an opportunity for the public to provide input on the plan before it was adopted.

Additionally, the public hearing provided an opportunity for the City’s customers, residents, and employees to learn and ask questions about the current and future water supply of the City.

10.2.1 Notice to Cities and Counties
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 water supplies that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan.
10642 …The urban water supplier shall provide notice of the time and place of hearing to any city or county within which the supplier provides water supplies...

The cities and counties to which the City provides water supplies and other agencies, as shown in Table 10-1, were provided 60-day notification (prior to the public hearing) that the City was in the process of preparing the 2025 UWMP. The 60-day notification letters are included in Appendix B. The cities and counties were provided a notice of public hearing, including the time and location. The notice of public hearing to cities and counties is included in Appendix B. 110
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Table 10-1 Notification to Cities and Countries
Submittal Table 10-1 Retail: Notification to Cities and Counties Water Code Section 10621(b) and 10642
City Name 60 Day Notice Notice of Public Hearing
City of Vallejo Yes Yes
City of Napa Yes Yes
City of Rio Vista Yes Yes
City of Dixon Yes Yes
City of Calistoga Yes Yes
City of Benicia Yes Yes
City of Vacaville Yes Yes
City of Fairfield Yes Yes
County Name 60 Day Notice Notice of Public Hearing
Napa County Yes Yes
NOTES: Napa County refers to the Napa County Resource Conservation District and the Napa County Flood Control and Water Conservation District.

10.2.2 Notice to the Public
10642 …Prior to adopting a plan, the urban water supplier shall make the plan available for public inspection… Prior to the hearing, notice of the time and place of hearing shall be published within the jurisdiction of the publicly owned water supplier pursuant to Section 6066 of the Government Code…
The UWMPA requires that the UWMP show the water agency solicited public participation. The notice to the public was included in a local newspaper as prescribed in Government Code 6066. This notice included the time and location of the public hearing, in addition to the location of where the UWMP was available for public inspection. The notice of public hearing to the public is included in Appendix B.

On XXXX XX, 2026, and XXXX XX, 2026, the City placed a notice in The Reporter, Daily Democrat, and Times-Herald (local newspapers) stating that its UWMP was being updated and that a public hearing was to be conducted to address comments and concerns from members of the community. The notice stated that a public review period was scheduled through XXXX XX, 2026, for written comments. A copy of this notification is included in Appendix B.

The Draft 2025 UWMP was available for public inspection during normal business hours at City Hall’s customer service counter, located at 4381 Broadway Street, as well as the City website (www.americancanyon.gov).

10.2.3 Notice to Agencies and Organizations
The following agencies and organizations were provided notice that the City was in the process of preparing the 2025 UWMP:
 Local Agency Formation Commission of Napa County.
 Napa Sanitation District.
 Reclamation District 2068.
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 Solano County Water Agency.
 Solano Irrigation District.
 Napa Valley Unified School District.
 Mezzetta Processing Facility.
 American Canyon Mobile Home Park.
 Napa Olympia Mobilodge.
 The Lodge at Napa Junction.
 Top It Off Bottling, LLC.
 South County Napa Properties LP.
 Vintage Ranch LLC.

The agencies and organizations were provided 60-day notification (prior to the public hearing) and a notice of public hearing, including the time and location. The 60-Day Notification letters and the notice of public hearing are included in Appendix B.

10.3 Public Hearing and Adoption
10642 …Prior to adopting a plan, the urban water supplier shall hold a public hearing thereon. 10608.26(a) In complying with this part, an urban retail water supplier shall conduct at least one public hearing to accomplish all of the following:
(1) Allow community input regarding the urban retail water supplier's implementation plan for complying with this part.
(2) Consider the economic impacts of the urban retail water supplier's implementation plan for complying with this part.
(3) Adopt a method, pursuant to subdivision (b) of Section 10608.20 for determining its urban water use target.
10642 …After the hearing, the plan shall be adopted as prepared or as modified after the hearing.

The plan was adopted by City Council at a public hearing on August 18, 2026. The City Adoption Resolutions are included in Appendix L. The hearing provided an opportunity for the City’s customers, residents, and employees to learn and ask questions about the current and future water supply of the City.

At the hearing, the UWMP, water use targets, and conservation implementation plan were discussed.

10.3.1 Adoption
After the public hearing, the 2025 UWMP was adopted as prepared. 112
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10.4 Plan Submittal
The public hearing will be followed by submittal of the UWMP to the California DWR, the California State Library, and Cities and Counties (see Commitment to Distribute in Appendix B).

10.4.1 Submission to DWR
The 2025 UWMP will be submitted to DWR within 30 days of adoption and by July 1, 2026.

10.4.2 Electronic Data Submission
The 2025 UWMP, in addition to tabular data, will be submitted using WUE data submittal tool.

10.4.3 Submission to the California State Library
The 2025 UWMP will be submitted in hardcopy format to the California State Library within 30 days of adoption.

10.4.4 Submission to Cities and Counties
The 2025 UWMP will be submitted in electronic format to cities and counties within 30 days of adoption.

10.5 Public Availability
Within 30 days of submitting the UWMP to DWR, the adopted UWMP will be available for public review during normal business hours at the locations specified herein.

10.6 Amending and Adopted UWMP
The plan may be updated at any time when the urban water supplier believes significant changes have occurred in population, land use, and/or water sources that may affect the contents of the plan. Copies of amendments or changes to the plan shall be submitted electronically to DWR, the California State Library, and any cities or counties which the City provides water supplies within 30 days of adoption. 113
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APPENDIX A REDUCED DELTA RELIANCE
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TECHNICAL MEMORANDUM
Demonstration of Reduced Delta
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Demonstration of Reduced Delta
Reliance
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This document is released for the purpose of information exchange review and planning only under the authority of Brianna Barton, June 3, 2026, CA 86633.
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pw://Carollo/CA/American Canyon/204216-000000/03 Reports and Studies/02 Deliverables/Urban Water Management Plan/Appendix A Contents
SECTION 1 INTRODUCTION 1
SECTION 2 DELTA PLAN POLICY WR P1 REQUIREMENTS 1
SECTION 3 DEMONSTRATION OF REDUCED DELTA RELIANCE 2
SECTION 4 EXPECTED OUTCOMES FOR REDUCED RELIANCE ON THE DELTA 3
SECTION 5 APPENDIX TO 2025 UWMP 8
Tables
Table 1 Calculation of Water Use Efficiency 5
Table 2 Calculations of Service Area Water Demands Without Water Use Efficiency 5 Table 3 Calculation of Supplies Contributing to Regional Self-Reliance 6 Table 4 Calculation of Reliance on Water Supplies from Delta Watershed 7 117

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Abbreviations
AF acre-feet
AFY acre-feet per year
CCR California Code of Regulations
City City of American Canyon
Delta Sacramento-San Joaquin Delta
DWR California Department of Water Resources
FCWCD Flood Control and Water Conservation District
SWP State Water Project
SWRCB State Water Resources Control Board
UWMP Urban Water Management Plan
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SECTION 1 INTRODUCTION
The Sacramento-San Joaquin Delta Reform Act of 2009 requires State and local public agencies with a “covered action” to submit a written certification of consistency to the Delta Stewardship Council as to whether the covered action is consistent with applicable policies. The City of American Canyon (City) receives supply through the State Water Project (SWP) by contract with Napa County Flood Control and Water Conservation District (FCWCD) and through an agreement with Vallejo for Delta water. Both supplies impact the Sacramento-San Joaquin Delta (Delta). Covered actions can include a multi-year water transfer, conveyance facility, or new diversion that involves transferring water through, exporting water from, or using water in the Delta. Therefore, the City is required to demonstrate consistency with Delta Plan Policy WR P1 (Reduce Reliance on the Delta Through Improved Regional Water Self-Reliance). Delta Plan Policy WR P1 identifies Urban Water Management Plans (UWMP) as the tool to demonstrate consistency with State policy to reduce reliance on the Delta for a Supplier that carries out or takes part in a covered action.

The purpose of this document is to demonstrate compliance with the Sacramento-San Joaquin Delta Reform Act of 2009 and provide an analysis of the City’s reduced reliance on the Delta and expected outcomes in accordance with State protocols. The analysis provided herein includes the WR P1 requirements needed in a water supplier’s UWMP to support a certification of consistency for covered actions. The inclusion of this document as an appendix to the City’s UWMPs, commencing with the 2015 UWMP, fulfills the requirements of WR P1. Future projects under evaluation will fulfill the requirements of WR P1.

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

WR P1 subsection (c)(1) further defines what adequately contributing to reduced reliance on the Delta means in terms of (a) above. Water suppliers that have done all the following are contributing to reduced reliance on the Delta and improved regional self-reliance and are therefore consistent with this policy:
 Completed a current UWMP which has been reviewed by the California Department of Water Resources (DWR) for compliance with the applicable requirements of Water Code Division 6, Parts

2.55, 2.6, and 2.8;
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 Identified, evaluated, and commenced implementation, consistent with the implementation schedule set forth in the Plan, of all programs and projects included in the Plan that are locally cost effective and technically feasible which reduce reliance on the Delta; and  Included in the Plan, commencing in 2015, the expected outcome for measurable reduction in Delta reliance and improvement in regional self-reliance. The expected outcome for measurable reduction in Delta reliance and improvement in regional self-reliance shall be reported in the Plan as the reduction in the amount of water used, or in the percentage of water used, from the Delta watershed.

For the purposes of reporting, water efficiency is considered a new source of water supply, consistent with Water Code section 1011(a).

California Code of Regulations (CCR), Title 23, § 5003(c) is followed by a description of programs and projects that reduce reliance on the Delta. Programs and projects that reduce reliance could include, but are not limited to, improvements in water use efficiency, water recycling, stormwater capture and use, advanced water technologies, conjunctive use projects, local and regional water supply and storage projects, and improved regional coordination of local and regional water supply efforts.

SECTION 3 DEMONSTRATION OF REDUCED DELTA

RELIANCE
The approach to determine the City’s reduced Delta reliance and improved regional self-reliance is consistent with the approach detailed by the California DWR in Appendix C of their “Urban Water Management Plan Guidebook 2025” (DWR Guidebook), issued in January 2026. The data used in the reduced reliance analysis for demands and supplies is detailed below. All data represent average or normal water year conditions and were obtained from the 2025 UWMP, previously adopted UWMPs, and City records.

The data inputs used in the reduced reliance analysis include:
 Water Years:
» Baseline (2010) – The analysis uses a normal water year representation of 2010 as the baseline, which is consistent with the approach described in the DWR Guidebook. Data for the City’s 2010 baseline are taken from City records and information presented in the City’s 2015 UWMP. » 2015-2025 Conditions – The actual conditions for 2015 through 2025 are based on data reported in the City’s 2015 through 2025 UWMPs, respectively.
» 2030-2050 Conditions – Normal year projections for 2030 through 2050 are taken from the City’s 2025 UWMP.
 Service Area Water Demands with Water Use Efficiency Accounted For – These values reflect the City’s actual and projected water use, including potable water demands, agricultural raw water, and losses.  Non-Potable Water Demands – These values consist of agricultural raw water that is not treated.  Population – Population data for 2010 through 2020 are taken from previous UWMPs. The population for 2025 and projected populations are taken from the 2025 UWMP. 120

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 Water Supplies Contributing to Regional Self-Reliance:
» Water Use Efficiency – This amount is calculated by DWR’s spreadsheet tool based on the City’s baseline demand, actual demands, and projected demands. Calculated by multiplying the reduction in per capita water demand from the baseline (2010) for a year by the actual or projected population for the same year. For example, in 2030 there would be 1,322 acre-feet (AF) in supply from water use efficiency.
» Water Recycling – Reflects the actual or projected recycled water delivered to customers within the City’s drinking water service area. Recycled water contributes to regional self-reliance by reducing the demand for potable water. Note that there was no recycled water delivered within the service area in 2010. For example, in 2030 there would be ### AF in supply from water recycling.
» Other categories in the table do not currently apply to the City’s supply portfolio. Supply options the city is evaluating include surface water storage at Lake Curry, groundwater production wells outside of City limits, and potable reuse of recycled water. In 2017, the City became a partner in the Sites Reservoir Project, an off-river up to 1.5 million AF reservoir that will capture excess water from major storms and save it for drier periods. This project has not been added to the table and will be revisited when more information about this project, such as expected increase in water supply, is available. Construction is scheduled to begin in 2026 and Sites Reservoir is anticipated to be operational at the end of 2033. The current planned storage allocation for the City is 24,936 AF. See Appendix D of the 2025 UWMP.
 Water Supplies from the Delta Watershed:
» The City sub-contracts with the Napa County FCWCD for imported surface water from the SWP. » The City has an agreement with Vallejo to purchase raw and treated water. Vallejo has an appropriative water right for Delta water from the State Water Resources Control Board (SWRCB) pre-dating the construction of the SWP.

Table 1 and Table 2 contain demand calculations. Table 3 contains the regional self-reliance analysis and Table 4 contains the analysis of the City’s reduced Delta reliance. The tables were generated using DWR’s spreadsheet tool and fulfill the requirements of WR P1 subsection (c)(1) Paragraph C.

SECTION 4 EXPECTED OUTCOMES FOR REDUCED

RELIANCE ON THE DELTA
As stated in WR P1(c)(1)(C), commencing in 2015, UWMPs are required to include expected outcomes for measurable reduction in Delta reliance and improved regional self-reliance. WR P1 further states that those outcomes shall be reported in the UWMP as the reduction in the amount or percentage of water used from the Delta. The following provides a summary of the near-term (2030) and long-term (2050) expected outcomes for the City’s Delta reliance and regional self-reliance based on the assumptions described in the previous section and DWR’s analysis tool. The results show that the City is measurably reducing reliance on the Delta and improving regional self-reliance, based on the percentage of the City’s water supplies from the Delta watershed.
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Expected Outcomes for Regional Self-Reliance (Table 3):
 Near-term (2030) – Normal water year regional self-reliance is expected to increase from 358 acrefeet per year (AFY) in 2015 to #,### AFY in 2030. This is achieved through water use efficiency and increased recycled water use.
 Long-term (2050) – Normal water year regional self-reliance is expected to increase from #,### AFY in 2030 to #,### AFY in 2050. This is achieved through water use efficiency and increased recycled water use.

Expected Outcomes for Percent of Water Supplies from the Delta Watershed (Table 4):
 Near-term (2030) – Normal water year reliance on supplies from the Delta watershed is expected to decrease by approximately 38 percent relative to the 2010 baseline.  Long-term (2050) – Normal water year reliance on supplies from the Delta watershed is expected to decrease by approximately 23 percent relative to the 2010 baseline. 122

DEMONSTRATION OF REDUCED DELTA RELIANCE
JUNE 2026 / DRAFT / CAROLLO
CITY OF AMERICAN CANYON 5
Table 1 Calculation of Water Use Efficiency
Service Area Water Use Efficiency Demands
(Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands with Water Use Efficiency Accounted For 3,024 2,976 2,636 2,235 2,381 2,448 2,514 2,581 2,647 Non-Potable Water Demands 33 56 63 28 28 28 28 28 28
Potable Service Area Demands with Water Use Efficiency Accounted For 2,991 2,920 2,573 2,207 2,353 2,420 2,486 2,553 2,619

Total Service Area Population Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050 (Optional) Service Area Population 19,392 20,315 19,524 22,477 23,830 24,555 25,280 26,005 26,730 Water Use Efficiency Since Baseline
(Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050 (Optional) Per Capita Water Use (GPCD) 138 128 118 88 88 88 88 88 87 Change in Per Capita Water Use from Baseline (GPCD) (9) (20) (50) (50) (50) (50) (50) (50) Estimated Water Use Efficiency Since Baseline 213 438 1,260 1,322 1,367 1,413 1,458 1,503 Table 2 Calculations of Service Area Water Demands Without Water Use Efficiency Total Service Area Water Demands
(Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands with Water Use Efficiency Accounted For 3,024 2,976 2,636 2,235 2,381 2,448 2,514 2,581 2,647 Reported Water Use Efficiency or Estimated Water Use Efficiency Since Baseline 213 438 1,260 1,322 1,367 1,413 1,458 1,503 Service Area Water Demands without Water Use Efficiency Accounted For 3,024 3,189 3,074 3,495 3,704 3,815 3,927 4,039 4,151 123

DEMONSTRATION OF REDUCED DELTA RELIANCE
JUNE 2026 / DRAFT / CAROLLO
CITY OF AMERICAN CANYON 6
Table 3 Calculation of Supplies Contributing to Regional Self-Reliance Water Supplies Contributing to Regional Self-Reliance
(Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Water Use Efficiency - 213 438 1,260 1,322 1,367 1,413 1,458 1,503 Water Recycling - 145 208 473 ### ### ### ### ###
Stormwater Capture and Use - - - - - - - - -
Advanced Water Technologies - - - - - - - - -
Conjunctive Use Projects - - - - - - - - -
Local and Regional Water Supply and Storage Projects - - - - - - - - - Other Programs and Projects the Contribute to Regional Self-Reliance - - - - - - - - - Water Supplies Contributing to Regional Self-Reliance - 358 646 1,733 1,322 1,367 1,413 1,458 1,503 Service Area Water Demands without Water Use Efficiency (Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands without Water Use Efficiency Accounted For 3,024 3,189 3,074 3,495 3,704 3,815 3,927 4,039 4,151 Change in Regional Self Reliance
(Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Water Supplies Contributing to Regional Self-Reliance - 358 646 1,733 1,322 1,367 1,413 1,458 1,503 Change in Water Supplies Contributing to Regional Self-Reliance 358 646 1,733 1,322 1,367 1,413 1,458 1,503 Percent Change in Regional Self Reliance
(As Percent of Demand w/out WUE)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Percent of Water Supplies Contributing to Regional Self-Reliance 0.0% 11.2% 21.0% 49.6% 35.7% 35.8% 36.0% 36.1% 36.2% Change in Percent of Water Supplies Contributing to Regional Self-Reliance 11.2% 21.0% 49.6% 35.7% 35.8% 36.0% 36.1% 36.2% 124

DEMONSTRATION OF REDUCED DELTA RELIANCE
JUNE 2026 / DRAFT / CAROLLO
CITY OF AMERICAN CANYON 7
Table 4 Calculation of Reliance on Water Supplies from Delta Watershed Water Supplies from the Delta Watershed
(Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
CVP/SWP Contract Supplies 2,373 2,346 2,051 2,565 3,376 3,376 3,376 3,376 3,376 Delta/Delta Tributary Diversions
Transfers and Exchanges
Other Water Supplies from the Delta Watershed 570 566 558 657 1,629 1,629 1,629 1,629 1,629 Total Water Supplies from the Delta Watershed 2,943 2,912 2,609 3,222 5,005 5,005 5,005 5,005 5,005 Service Area Water Demands without Water Use Efficiency (Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Service Area Water Demands without Water Use Efficiency Accounted For 3,024 3,189 3,074 3,495 3,704 3,815 3,927 4,039 4,151 Change in Supplies from the Delta Watershed
(Acre-Feet)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Water Supplies from the Delta Watershed 2,943 2,912 2,609 3,222 5,005 5,005 5,005 5,005 5,005 Change in Water Supplies from the Delta Watershed (31) (334) 279 2,062 2,062 2,062 2,062 2,062 Percent Change in Supplies from the Delta Watershed
(As a Percent of Demand w/out WUE)
Baseline
(2010) 2015 2020 2025 2030 2035 2040 2045 2050
(Optional)
Percent of Water Supplies from the Delta Watershed 97.3% 91.3% 84.9% 92.2% 135.1% 131.2% 127.4% 123.9% 120.6% Change in Percent of Water Supplies from the Delta Watershed -6.0% -12.5% -5.1% 37.8% 33.9% 30.1% 26.6% 23.3% 125

DEMONSTRATION OF REDUCED DELTA RELIANCE
JUNE 2026 / DRAFT / CAROLLO
CITY OF AMERICAN CANYON 8
SECTION 5 APPENDIX TO 2025 UWMP
The information contained in this document is also included as Appendix A to the City’s 2025 UWMP, consistent with WR P1 subsection (c)(1)(C) (CCR, Title 23, Section 5003). As described in Chapter 10 of its 2025 UWMP, the City followed the required public notification, public review and hearing, and adoption processes required by the Urban Water Management Planning Act. The 2025 UWMP (including this Appendix) were adopted by the City Council on August 18, 2026 (see Appendix L of the 2025 UWMP). 126
2025 URBAN WATER MANAGEMENT PLAN
JUNE 2026 / ADMINISTRATIVE DRAFT / CAROLLO

CITY OF AMERICAN CANYON

APPENDIX B OUTREACH DOCUMENTS
Public Hearing Notices to be included with Public Review Draft or Final Urban Water Management Plan. 127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
Commitment to Distribute the 2025 Urban Water Management Plan (UWMP) The documentation currently included in these appendices satisfies California Water Code (CWC) parts 10621(b) and 10642.

Two other sections of the CWC specify UWMP documentation that must take place after the submission of the supplier’s UWMP to the California Department of Water Resources (DWR).

These parts are as follows:
• Part 10644(a), requiring documentation that within 30 days of submitting the UWMP to DWR, the adopted UWMP has been or will be submitted to the California State Library and any city or county to which the supplier provides water. • Part 10645, requiring documentation that the supplier will make the UWMP available for public review no later than 30 days after submission to DWR.

In order to satisfy these requirements, the City will perform the following actions:
• The City will submit its 2025 UWMP to DWR.
• The City will send a printed or electronic copy of its 2025 UWMP to the California State Library and to the cities and counties within which it provides water. The City will do this within 30 days from filing with DWR.
• The City will make their 2025 UWMP available for public review within 30 days from filing with DWR.
151
2025 URBAN WATER MANAGEMENT PLAN
JUNE 2026 / ADMINISTRATIVE DRAFT / CAROLLO

CITY OF AMERICAN CANYON
APPENDIX C SB X7-7 VERIFICATION AND COMPLIANCE
FORMS
152
SB X7‐7 Table 0: Units of Measure Used in UWMP*
(select one from the drop down list)
Acre Feet
*The unit of measure must be consistent with Table 2‐3
NOTES:
153
Parameter Value Units
2008 total water deliveries 4,193 Acre Feet
2008 total volume of delivered recycled water 67 Acre Feet 2008 recycled water as a percent of total deliveries 1.60% Percent Number of years in baseline period1, 2 10 Years
Year beginning baseline period range 1999
Year ending baseline period range3 2008
Number of years in baseline period 5 Years
Year beginning baseline period range 2003
Year ending baseline period range4 2007
SB X7‐7 Table‐1: Baseline Period Ranges
1 If the 2008 recycled water percent is less than 10 percent, then the first baseline period is a continuous 10‐year period.  If the amount of recycled water delivered in 2008 is 10 percent or greater, the first baseline period is a continuous 10‐ to 15‐year period. 2 The Water Code requires that the baseline period is between 10 and 15 years. However, DWR recognizes that some water suppliers may not have the minimum 10 years of baseline data.
3 The ending year must be between December 31, 2004 and December 31, 2010. 4 The ending year must be between December 31, 2007 and December 31, 2010. 5‐year
baseline period
Baseline
10‐ to 15‐year
baseline period
NOTES:
154
NOTES:

SB X7‐7 Table 2: Method for Population Estimates
Method Used to Determine Population
(may check more than one)

1. Department of Finance  (DOF)
DOF Table E‐8 (1990 ‐ 2000) and  (2000‐2010)  and
DOF Table E‐5 (2011 ‐ 2015) when available

3. DWR Population Tool

4. Other
DWR recommends pre‐review

2. Persons‐per‐Connection Method
155
Population
Year 1 1999 9,628
Year 2 2000 9,803
Year 3 2001 10,302
Year 4 2002 11,748
Year 5 2003 13,073
Year 6 2004 14,104
Year 7 2005 15,418
Year 8 2006 16,350
Year 9 2007 17,655
Year 10 2008 18,258
Year 11
Year 12
Year 13
Year 14
Year 15
Year 1 2003 13,073
Year 2 2004 14,104
Year 3 2005 15,418
Year 4 2006 16,350
Year 5 2007 17,655
20,315
Year
2015
SB X7‐7 Table 3: Service Area Population
10 to 15 Year Baseline Population
5 Year Baseline Population
2015 Compliance Year Population
NOTES:
156
Exported
Water
Change in
Dist. System
Storage
(+/‐)
Indirect
Recycled
Water
This column will
remain blank
until SB X7‐7
Table 4‐B is
completed.

Water
Delivered for
Agricultural
Use
Process Water
This column will
remain blank
until SB X7‐7
Table 4‐D is
completed.

Year 1 1999       2,039.25            ‐                 ‐ ‐                46.22 ‐        1,993.03 Year 2 2000       2,369.20            ‐                 ‐ ‐              180.02 ‐        2,189.18 Year 3 2001       2,608.83            ‐                 ‐ ‐              143.69 ‐        2,465.14 Year 4 2002       2,913.08            ‐                 ‐ ‐                94.99 ‐        2,818.09 Year 5 2003       3,207.12            ‐                 ‐ ‐              135.42 ‐        3,071.70 Year 6 2004       3,657.13            ‐                 ‐ ‐              196.65 ‐        3,460.48 Year 7 2005       3,715.62            ‐                 ‐ ‐              142.39 ‐        3,573.23 Year 8 2006       3,638.54            ‐                 ‐ ‐              108.33 ‐        3,530.21 Year 9 2007       3,984.24            ‐                 ‐ ‐              174.17 ‐        3,810.07 Year 10 2008       4,126.13            ‐                 ‐ ‐              109.60 ‐        4,016.53 Year 11 0                 ‐ ‐    ‐         ‐
Year 12 0                 ‐ ‐    ‐         ‐
Year 13 0                 ‐ ‐    ‐         ‐
Year 14 0                 ‐ ‐    ‐         ‐
Year 15 0                 ‐ ‐    ‐         ‐
3,093
Year 1 2003        3,207.12             ‐ ‐                  ‐              135.42 ‐        3,071.70 Year 2 2004        3,657.13            ‐                 ‐ ‐              196.65 ‐        3,460.48 Year 3 2005        3,715.62            ‐                 ‐ ‐              142.39 ‐        3,573.23 Year 4 2006        3,638.54            ‐                 ‐ ‐              108.33 ‐        3,530.21 Year 5 2007        3,984.24            ‐                 ‐ ‐              174.17 ‐        3,810.07 3,489
3,013.67 ‐             ‐                56.21 ‐           2,957 * NOTE that the units of measure must remain consistent throughout the UWMP,  as reported in Table 2‐3 NOTES:

SB X7‐7 Table 4: Annual Gross Water Use *
2015
10 to 15 Year Baseline ‐ Gross Water Use
10 ‐ 15 year baseline average gross water use
5 Year Baseline ‐ Gross Water Use
5 year baseline average gross water use
2015 Compliance Year ‐ Gross Water Use
Baseline Year
Fm SB X7‐7 Table 3
Volume Into
Distribution
System
This column will
remain blank
until SB X7‐7
Table 4‐A is
completed.

Annual
Gross
Water Use
Deductions
157
Volume
Entering
Distribution
System
Meter Error
Adjustment*
Optional
(+/‐)
Corrected
Volume
Entering
Distribution
System
Year 1 1999           1,382                1,382
Year 2 2000           1,682                1,682
Year 3 2001           2,097                2,097
Year 4 2002           2,391                2,391
Year 5 2003           2,657                2,657
Year 6 2004           3,112                3,112
Year 7 2005           3,148                3,148
Year 8 2006           3,009                3,009
Year 9 2007           3,340                3,340
Year 10 2008           3,453                3,453
Year 11 0 ‐
Year 12 0 ‐
Year 13 0 ‐
Year 14 0 ‐
Year 15 0 ‐
Year 1 2003           2,657                2,657
Year 2 2004           3,112                3,112
Year 3 2005           3,148                3,148
Year 4 2006           3,009                3,009
Year 5 2007           3,340                3,340
2,025                2,025
SB X7‐7 Table 4‐A:  Volume Entering the Distribution
System(s)
Complete one table for each source.
10 to 15 Year Baseline ‐ Water into Distribution System 5 Year Baseline ‐ Water into Distribution System
2015 Compliance Year ‐ Water into Distribution System
Name of Source
Baseline Year
Fm SB X7‐7 Table 3
* Meter Error Adjustment ‐ See guidance in Methodology 1, Step 3 of Methodologies Document
NOTES:

This water source is:

The supplier's own water source
A purchased or imported source
2015
SWP Water
158
Volume
Entering
Distribution
System
Meter Error
Adjustment*
Optional
(+/‐)
Corrected
Volume
Entering
Distribution
System
Year 1        1,999 500 500
Year 2        2,000 500 500
Year 3        2,001 500 500
Year 4        2,002 500 500
Year 5        2,003 500 500
Year 6        2,004 500 500
Year 7        2,005 500 500
Year 8        2,006 500 500
Year 9        2,007 500 500
Year 10        2,008 500 500
Year 11               ‐    0
Year 12               ‐    0
Year 13               ‐    0
Year 14               ‐    0
Year 15               ‐    0
Year 1        2,003              500 500
Year 2        2,004              500 500
Year 3        2,005              500 500
Year 4        2,006              500 500
Year 5        2,007              500 500
500 500
Name of Source Vallejo Permit Water
SB X7‐7 Table 4‐A:  Volume Entering the Distribution
Baseline Year
Fm SB X7‐7 Table 3
2015
* Meter Error Adjustment ‐ See guidance in Methodology 1, Step 3 of Methodologies Document
NOTES:

This water source is:

The supplier's own water source
A purchased or imported source
10 to 15 Year Baseline ‐ Water into Distribution System 5 Year Baseline ‐ Water into Distribution System
2015 Compliance Year ‐ Water into Distribution System
159
Volume
Entering
Distribution
System
Meter Error
Adjustment*
Optional
(+/‐)
Corrected
Volume
Entering
Distribution
System
Year 1        1,999 157.49 157
Year 2        2,000 186.78 187
Year 3        2,001 12.03 12
Year 4        2,002 22.57 23
Year 5        2,003 50.38 50
Year 6        2,004 44.95 45
Year 7        2,005 67.32 67
Year 8        2,006 129.12 129
Year 9        2,007 144.61 145
Year 10        2,008 172.93 173
Year 11               ‐    0
Year 12               ‐    0
Year 13               ‐    0
Year 14               ‐    0
Year 15               ‐    0
Year 1        2,003 50.38 50
Year 2        2,004 44.95 45
Year 3        2,005 67.32 67
Year 4        2,006 129.12 129
Year 5        2,007 144.61 145
101.67 102
Vallejo Treated Water
This water source is:

The supplier's own water source
A purchased or imported source
10 to 15 Year Baseline ‐ Water into Distribution System 5 Year Baseline ‐ Water into Distribution System
2015 Compliance Year ‐ Water into Distribution System
Name of Source
2015
* Meter Error Adjustment ‐ See guidance in Methodology 1, Step 3 of Methodologies Document
NOTES:

SB X7‐7 Table 4‐A:  Volume Entering the Distribution
Baseline Year
Fm SB X7‐7 Table 3
160
Volume
Entering
Distribution
System
Meter Error
Adjustment*
Optional
(+/‐)
Corrected
Volume
Entering
Distribution
System
Year 1        1,999 0 0
Year 2        2,000 0 0
Year 3        2,001 0 0
Year 4        2,002 0 0
Year 5        2,003 0 0
Year 6        2,004 0 0
Year 7        2,005 0 0
Year 8        2,006 0 0
Year 9        2,007 0 0
Year 10        2,008 0 0
Year 11               ‐    0
Year 12               ‐    0
Year 13               ‐    0
Year 14               ‐    0
Year 15               ‐    0
Year 1        2,003 0 0
Year 2        2,004 0 0
Year 3        2,005 0 0
Year 4        2,006 0 0
Year 5        2,007 0 0
387 387
Vallejo Emergency Water
This water source is:

The supplier's own water source
A purchased or imported source
SB X7‐7 Table 4‐A:  Volume Entering the Distribution
Baseline Year
Fm SB X7‐7 Table 3
2015
* Meter Error Adjustment ‐ See guidance in Methodology 1, Step 3 of Methodologies Document
NOTES:

Name of Source
10 to 15 Year Baseline ‐ Water into Distribution System 5 Year Baseline ‐ Water into Distribution System
2015 Compliance Year ‐ Water into Distribution System
161
Service Area
Population
Fm SB X7‐7
Table 3
Annual Gross
Water Use
Fm SB X7‐7
Table 4
Daily Per
Capita Water
Use (GPCD)
Year 1 1999 9,628 1,993 185
Year 2 2000 9,803 2,189 199
Year 3 2001               10,302 2,465 214
Year 4 2002               11,748 2,818 214
Year 5 2003               13,073 3,072 210
Year 6 2004               14,104 3,460 219
Year 7 2005               15,418 3,573 207
Year 8 2006               16,350 3,530 193
Year 9 2007               17,655 3,810 193
Year 10 2008               18,258 4,017 196
Year 11 0 ‐ ‐
Year 12 0 ‐  ‐
Year 13 0 ‐  ‐
Year 14 0 ‐  ‐
Year 15 0 ‐  ‐
203
Service Area
Population
Fm SB X7‐7
Table 3
Gross Water Use
Fm SB X7‐7
Table 4
Daily Per
Capita Water
Use
Year 1 2003                13,073 3,072 210
Year 2 2004                14,104 3,460 219
Year 3 2005                15,418 3,573 207
Year 4 2006                16,350 3,530 193
Year 5 2007                17,655 3,810 193
204
20,315 2,957 130
NOTES:
5 Year Average Baseline GPCD
2015 Compliance Year GPCD
2015
Baseline Year
Fm SB X7‐7 Table 3
SB X7‐7 Table 5: Gallons Per Capita Per Day (GPCD)
Baseline Year
Fm SB X7‐7 Table 3
10 to 15 Year Baseline GPCD
10‐15 Year Average Baseline GPCD
5 Year Baseline GPCD
162
203
204
2015 Compliance Year GPCD 130
SB X7‐7 Table 6: Gallons per Capita per Day
Summary From Table SB X7‐7 Table 5
10‐15 Year Baseline GPCD
5 Year Baseline GPCD
NOTES:
163
Supporting Documentation
Method 1 SB X7‐7 Table 7A
Method 2 SB X7‐7 Tables 7B, 7C, and 7D
Contact DWR for these tables
Method 3 SB X7‐7 Table 7‐E
Method 4 Method 4 Calculator
SB X7‐7 Table 7: 2020 Target Method
Select Only One
Target Method
NOTES:
164
10‐15 Year Baseline
GPCD
2020 Target
GPCD
203 162
SB X7‐7 Table 7‐A: Target Method 1
20% Reduction
NOTES:
165
5 Year
Baseline GPCD
From SB X7‐7
Table 5
Maximum 2020
Target1
Calculated
2020 Target2
Confirmed
2020 Target
204 194 162 162
SB X7‐7 Table 7‐F: Confirm Minimum Reduction for 2020 Target 1 Maximum 2020 Target is 95% of the 5 Year Baseline GPCD 2 2020 Target is calculated based on the selected Target Method, see SB X7‐7 Table 7 and corresponding tables for agency's calculated target.

NOTES:
166
Confirmed
2020 Target
Fm SB X7‐7
Table 7‐F
10‐15 year
Baseline GPCD
Fm SB X7‐7
Table 5
2015 Interim
Target GPCD
162 203 183
SB X7‐7 Table 8: 2015 Interim Target GPCD
NOTES:
167
Extraordinary
Events
Weather
Normalization
Economic
Adjustment
130 183
From
Methodology 8
(Optional)
From
Methodology 8
(Optional)
From
Methodology
8 (Optional)
‐  130 130 YES
Optional Adjustments  (in GPCD)
NOTES:

SB X7‐7 Table 9: 2015 Compliance
Did Supplier
Achieve
Targeted
Reduction for
2015?
Actual 2015
GPCD
2015 Interim
Target GPCD
2015 GPCD
(Adjusted if
applicable)
TOTAL
Adjustments
Adjusted 2015
GPCD
Enter "0" if Adjustment Not Used
168
SB X7‐7 Table 0: Units of Measure Used in 2020 UWMP*
(select one from the drop down list)
Acre Feet
*The unit of measure must be consistent throughout the UWMP, as reported in Submittal Table 2‐3.

NOTES:
169
SB X7‐7 Table 1 pertains to baselines and targets and  is not used in the SB X7‐7 2020 Compliance Form. 170
NOTES:

SB X7‐7 Table 2:  Method for 2020 Population Estimate
Method Used to Determine 2020 Population
(may check more than one)

1. Department of Finance  (DOF) or
American Community Survey (ACS)

3. DWR Population Tool

4. Other
DWR recommends pre‐review

2. Persons‐per‐Connection Method
171
2020                                            19,524
SB X7‐7 Table 3: 2020 Service Area Population
2020 Compliance Year Population
NOTES:
172
Exported
Water *
Change in
Dist. System
Storage*
(+/‐)
Indirect
Recycled
Water
This column will
remain blank
until SB X7‐7
Table 4‐B is
completed.

Water
Delivered
for
Agricultural
Use*
Process Water
This column will
remain blank
until SB X7‐7
Table 4‐D is
completed.
2,609  ‐             ‐                                       ‐    63                                          ‐                            2,546 NOTES: Units of measure are acre‐feet (AF). Raw water purchased for agricultural use has been deducted.

SB X7‐7 Table 4: 2020 Gross Water Use
2020 Volume
Into
Distribution
System
This column will
remain blank until
SB X7‐7 Table 4‐A
is completed.
2020 Gross Water
Use
2020 Deductions
*  Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.

Compliance
Year 2020
173
Volume   Entering
Distribution System  1
Meter Error
Adjustment 2
Optional
(+/‐)
Corrected Volume
Entering
Distribution System
29                                                      29  ‐ Volume   Entering
Distribution System  1
Meter Error
Adjustment 2
Optional
(+/‐)
Corrected Volume
Entering
Distribution System
500 500
This water source is (check one) :

The supplier's own water source
NOTES: Units of measure are acre‐feet (AF).

SB X7‐7 Table 4‐A:  2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.

Name of Source Vallejo Permit Water
Name of Source
SB X7‐7 Table 4‐A:  2020 Volume Entering the Distribution System(s) Meter Error Adjustment
Complete one table for each source.
1   Units of measure (AF, MG , or CCF)  must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.                                                                                                    2  Meter Error Adjustment  ‐ See guidance in Methodology 1, Step 3 of Methodologies Document NOTES: Units of measure are acre‐feet (AF).

This water source is (check one) :

The supplier's own water source
A purchased or imported source
State Water Project Water
Compliance Year
2020
A purchased or imported source
1   Units of measure (AF, MG , or CCF)  must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.                                                                               2  Meter Error Adjustment ‐  See guidance in Methodology 1, Step 3 of Methodologies Document Compliance Year
2020
174
Volume   Entering
Distribution System  1
Meter Error
Adjustment 2
Optional
(+/‐)
Corrected Volume
Entering
Distribution System
58 58
Volume   Entering
Distribution System  1
Meter Error
Adjustment 2
Optional
(+/‐)
Corrected Volume
Entering
Distribution System
191 191
Article 21
This water source is (check one) :

The supplier's own water source
A purchased or imported source
SB X7‐7 Table 4‐A:  2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.

NOTES: Units of measure are acre‐feet (AF).

Name of Source
The supplier's own water source
A purchased or imported source
Name of Source Vallejo Treated Water
This water source is (check one) :

SB X7‐7 Table 4‐A:  2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.
1   Units of measure (AF, MG , or CCF)  must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.                                                                            2  Meter Error Adjustment  ‐ See guidance in Methodology 1, Step 3 of Methodologies Document NOTES: Units of measure are acre‐feet (AF).
1   Units of measure (AF, MG , or CCF)  must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.                                                                            2  Meter Error Adjustment  ‐ See guidance in Methodology 1, Step 3 of Methodologies Document Compliance Year
2020
Compliance Year
2020
175
Volume   Entering
Distribution System  1
Meter Error
Adjustment 2
Optional
(+/‐)
Corrected Volume
Entering
Distribution System
1,819 1,819
Volume   Entering
Distribution System  1
Meter Error
Adjustment 2
Optional
(+/‐)
Corrected Volume
Entering
Distribution System
12 12
This water source is (check one) :

The supplier's own water source
A purchased or imported source
Name of Source Table A Exchange Return Water
A purchased or imported source
SB X7‐7 Table 4‐A:  2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.

Name of Source Article 56 Carryover
This water source is (check one) :

The supplier's own water source
NOTES: Units of measure are acre‐feet (AF).

SB X7‐7 Table 4‐A:  2020 Volume Entering the Distribution System(s), Meter Error Adjustment
Complete one table for each source.

NOTES: Units of measure are acre‐feet (AF).
1   Units of measure (AF, MG , or CCF)  must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.                                                                            2  Meter Error Adjustment  ‐ See guidance in Methodology 1, Step 3 of Methodologies Document Compliance Year
2020
Compliance Year
2020
1   Units of measure (AF, MG , or CCF)  must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.                                                                            2  Meter Error Adjustment  ‐ See guidance in Methodology 1, Step 3 of Methodologies Document 176
Volume
Discharged
from
Reservoir for
Distribution
System
Delivery1
Percent
Recycled
Water
Recycled
Water
Delivered to
Treatment
Plant
Transmission/
Treatment
Loss1
Recycled
Volume
Entering
Distribution
System from
Surface
Reservoir
Augmentation
Recycled
Water
Pumped by
Utility1,2
Transmission/
Treatment
Losses1
Recycled
Volume
Entering
Distribution
System from
Groundwater
Recharge
‐                           ‐                           ‐    ‐ 1   Units of measure (AF, MG , or CCF)  must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.                                           2 Suppliers will provide supplemental sheets to document the calculation for their input into "Recycled Water Pumped by Utility". The volume reported in this cell must be less than total groundwater pumped ‐ See Methodology 1, Step 8, section 2.c.

SB X7‐7 Table 4‐B: 2020 Indirect Recycled Water Use Deduction  (For use only by agencies that are deducting indirect recycled water) 2020 Surface Reservoir Augmentation
Total Deductible
Volume of Indirect
Recycled Water
Entering the
Distribution System
2020 Groundwater Recharge
2020 Compliance
Year
177
Criteria 1‐  Industrial water use is equal to or greater than 12% of gross water use.

Complete SB X7‐7 Table 4‐C.1
Criteria 2 ‐ Industrial water use is equal to or greater than 15 GPCD.

Complete SB X7‐7 Table 4‐C.2
Criteria 3 ‐ Non‐industrial use is equal to or less than 120 GPCD.

Complete SB X7‐7 Table 4‐C.3
Criteria 4 ‐ Disadvantaged Community.

Complete SB x7‐7 Table 4‐C.4
SB X7‐7 Table 4‐C: 2020 Process Water Deduction Eligibility (For use only by agencies that are deducting process water)  Choose Only One NOTES:

Data from this table will not be entered into WUEdata.

Instead, the entire table will be uploaded to WUEdata as a separate upload in Excel format. 178
2020 Gross
Water Use
Without
Process
Water
Deduction
2020 Industrial
Water Use
Percent
Industrial
Water
Eligible
for
Exclusion
Y/N
2,546  0% NO
Data from this table will not be entered into WUEdata.

Instead, the entire table will be uploaded to WUEdata as a separate upload in Excel format.

NOTES: Units of measure are acre‐feet (AF).

SB X7‐7 Table 4‐C.1: 2020 Process Water Deduction Eligibility      (For use only by agencies that are deducting process water using Criteria 1) Criteria 1
Industrial water use is equal to or greater than 12% of gross water use 2020 Compliance Year
179
2020 Industrial
Water Use 2020 Population
2020
Industrial
GPCD
Eligible for
Exclusion Y/N
19,524                      ‐    NO
Data from this table will not be entered into WUEdata.

Instead, the entire table will be uploaded to WUEdata as a separate upload in Excel format.

NOTES:

SB X7‐7 Table 4‐C.2: 2020 Process Water Deduction Eligibility                     (For use only by agencies that are deducting process water using Criteria 2) Criteria 2
Industrial water use is equal to or greater than 15 GPCD 2020 Compliance
Year
180
2020 Gross
Water Use
Without
Process Water
Deduction
Fm SB X7‐7
Table 4
2020
Industrial
Water Use
2020 Non‐
industrial
Water Use
2020
Population
Fm SB X7‐7
Table 3
Non‐Industrial
GPCD
Eligible for
Exclusion
Y/N
2,546                  2,546            19,524                    116  YES NOTES: Units of measure are acre‐feet (AF).

Data from this table will not be entered into WUEdata.

Instead, the entire table will be uploaded to WUEdata as a separate upload in Excel format.

Criteria 3
Non‐industrial use is equal to or less than 120 GPCD
SB X7‐7 Table 4‐C.3: 2020 Process Water Deduction Eligibility                                                      (For use only by agencies that are deducting process water using Criteria 3) 2020 Compliance Year
181
Service Area
Median Household
Income
Percentage of
Statewide
Average
Eligible for
Exclusion? Y/N
2020 $75,235 0% YES
NOTES
California Median
Household Income*
*California median household income 2015 ‐2019  as reported in US Census Bureau QuickFacts.

Data from this table will not be entered into WUEdata.

Instead, the entire table will be uploaded to WUEdata as a separate upload in Excel format.

SB X7‐7 Table 4‐C.4: 2020 Process Water Deduction Eligibility  (For  use only by agencies that are deducting process water using Criteria 4) Criteria 4
Disadvantaged Community. A “Disadvantaged Community” (DAC) is a community with a median household income less than 80 percent of the statewide average.

SELECT ONE
"Disadvantaged Community" status was determined using one of the methods listed below:

If using the IRWM DAC Mapping Tool, include a screen shot from the tool showing that the service area is considered a DAC.

1.  IRWM DAC Mapping tool https://gis.water.ca.gov/app/dacs/

2.  2020 Median Income
182
Industrial
Customer's Total
Water Use *
Total Volume
Provided by
Supplier*
% of Water
Provided by
Supplier
Customer's Total
Process  Water
Use*
Volume of Process
Water Eligible for
Exclusion for this
Customer
‐
Compliance Year
2020
NOTES:
*  Units of measure (AF, MG , or CCF) must remain consistent throughout the UWMP,  as reported in SB X7‐7 Table 0 and Submittal Table 2‐3.

Data from these tables will not be entered into WUEdata.                                                                                           Instead, the entire tables will be uploaded to WUEdata as a separate upload in Excel format.

Name of Industrial Customer Enter Name of Industrial Customer 1 SB X7‐7 Table 4‐D:  2020 Process Water Deduction ‐ Volume                                                                    Complete a separate table for each industrial customer with a process water exclusion This table(s) is only for Suppliers that deduct process water from their 2020 gross water use. 183
2020 Gross Water
Fm SB X7‐7 Table 4
2020 Population Fm
SB X7‐7 Table 3 2020 GPCD
19,524 2,546                                                   116 SB X7‐7 Table 5: 2020 Gallons Per Capita Per Day
(GPCD)
NOTES: Units of measure are acre‐feet (AF).
184
SB X 7‐7 Table 6 pertains to baselines and targets and is not used in the SB X7‐7 2020 Compliance Form. 185
SB X7‐7 Table 7 applies to baseline and target calculations and is not included in the SB X7‐7 2020 Compliance Form. 186
SB X7‐7 Table 8 was used for the 2015 Interim Target and is not used in the 2020 UWMP. 187
Extraordinary
Events1
Weather
Normalization1
Economic
Adjustment1
116                         ‐                               ‐                          ‐                        116 ‐                     162 YES NOTES:
1  All values are reported in GPCD                                                                                                                                                                                        2 2020 Confirmed Target GPCD  is taken from the Supplier's SB X7‐7 Verification Form Table SB X7‐7, 7‐F.

SB X7‐7 Table 9: 2020 Compliance
Optional Adjustments to 2020 GPCD Did Supplier
Achieve
Targeted
Reduction for
2020?
Actual 2020
GPCD1
2020  Confirmed
Target GPCD 1, 2 TOTAL
Adjustments1
Adjusted 2020
GPCD 1
(Adjusted if
applicable)
Enter "0" if Adjustment Not Used
188
2025 URBAN WATER MANAGEMENT PLAN
JUNE 2026 / ADMINISTRATIVE DRAFT / CAROLLO

CITY OF AMERICAN CANYON
APPENDIX D SITES RESERVOIR 2024 ANNUAL

PROGRESS REPORTAND DOI PRESS

RELEASE
189
Sites
Project
Authority
2024
ANNUAL
REPORT
190
2 | Sites Project Authority 2024 Annual Report | 3

A MESSAGE FROM THE SITES PROJECT AUTHORITY
Fritz Durst

CHAIRMAN,
Sites Project Authority Board of Directors
Valerie Pryor

CHAIRWOMAN,
Sites Reservoir Committee
2024 marked the start of a new chapter for the Sites Reservoir Project with several major milestones that moved the Sites Reservoir Project closer to final design and construction. We successfully defended legal challenges to the environmental review process, with courts ruling that the Final Environmental Impact Report (EIR) fully complies with the California Environmental Quality Act (CEQA).

We made advancements in the Sites Reservoir Project’s permitting process with the California Department of Fish and Wildlife (CDFW) issuing the Incidental Take Permits required for construction and operation of the reservoir, and the State Water Resources Control Board beginning proceedings to consider our Water Right permit.

We also began preparing for the next phase of the Sites Reservoir Project by initiating our first land purchase of property west of Maxwell and launching the selection process for a Construction Manager at Risk (CMAR) contractor for the Dams and Reservoir package, which marks a critical step toward construction.

Our progress comes at a time when water storage is needed more than ever in California. In early 2024, Northern California experienced a series of atmospheric rivers that marked the close of yet another wet year. Our real-time modeling showed that if Sites Reservoir was already operational, it would have been 80% full after large storms in January and February and 100% full by the end of the 2023-2024 wet season in April. We continue to see how well Sites Reservoir will perform during wet years, and how much it's needed to capture and store water for dry years.

This need is also reflected in the growing support for Sites Reservoir.

Last year, 16 agencies across California expressed interest in participation and were placed on the waitlist, which reflects the broad support that has been a hallmark of the Sites Reservoir Project. Our state and federal partners continue to invest in Sites Reservoir, with more than $273M in federal funding secured in 2024, bringing the total to approximately $517M at the close of the year.

This broad and diverse support underscores the significant benefits the Sites Reservoir Project will provide to our communities, farms, and environment.

In 2025, we will work toward our next big milestones—selecting a CMAR contractor, moving from design to construction, securing additional real estate acquisitions, and obtaining our Water Right permit. With each milestone, we move one step closer to delivering a 21st century reservoir that provides water reliability, flexibility, and resiliency for generations to come.

Thank you for your continued support.
191
4 | Sites Project Authority 2024 Annual Report | 5
NEXT
Embarking on the next part of
the journey, together
The end of 2024 marks a pivotal
time for Sites Reservoir. The Sites
Reservoir Project is nearly ready for
construction due to the enduring
commitment of every Participant—
each seeing Sites Reservoir as an
investment that will provide a
secure water future for generations
to come.

TRANSITIONING TOWARD

CONSTRUCTION

CONSTRUCTING A
BETTER
FUTURE
The Sites Project Authority has
stayed true to its strategic plan and NOWdelivered results Sites Reservoir is Ready for Construction
Breaking ground is a significant milestone—a big hill to crest on our journey to a more secure water future.

A Better Future
Sites Reservoir is a generational opportunity to create a sustainable water solution.

Sites Reservoir is Permittable
Now: The Sites Project Authority received major state
biological permits to construct and operate Sites Reservoir.

Next: Receive a water right, which is the remaining step to secure Sites Reservoir benefits.

Sites Reservoir has an Effective Organization
Now: Participants and the Sites Project Authority are united in the common goal of creating a more secure water future through Sites Reservoir.

Next: Finalize and sign the agreements that will cement this generational partnership for a century.

Sites Reservoir is Buildable
Now: The Sites Project Authority designed a reliable and safe project and understands the cost and schedule.

Next: Engage the right contractors and keep the local
community involved in key decisions.

Sites Reservoir is Affordable
Now: The Sites Project Authority has a plan to finance the Sites Reservoir Project with a flexible Water Infrastructure Finance and Innovation Act (WIFIA) loan and increasing
contributions from the state and federal governments that will keep the project affordable for Participants.

Next: Each Participant will decide how the project fits into their future needs and budgets.
2024 Annual Report | 5 192
Cities, water agencies, and reclamation districts across the state are participating in Sites Reservoir because of the unique benefits it will provide:
• A reliable water supply for communities, farms, and the environment • Dedicated environmental storage to support wildlife and their habitats • Increased effectiveness of existing water infrastructure • Recreational opportunities
• Job creation during construction and operations
Community
HUMBLE
As a result of growing from humble roots,
the success of Sites Reservoir depends on
the unwavering support from the local
people and community. It is their continuous
encouragement and dedication that propels the
Sites Project forward and reinforces the Sites
Project Authority's efforts, which enables us to
achieve our goals.

LOCALLY LED
Sites Reservoir remains a viable project because
it is locally led and because it fits into the values
and ideals of the people it will serve. Sites
Reservoir has a long history that is woven into the
identity of the local community. The Sites Project
Authority, in partnership with local communities,
has shaped Sites Reservoir into a project that will
honor the principles of the community.

Affordability

COST EFFECTIVE
Sites is an accumulation of years of research
on cost-effective technologies that will be a
long-term asset. The initial cost to build a water
solution of this magnitude is substantial, but
Sites Reservoir offers more than the sum of
planning, construction, and operation costs and
will be increasingly cost effective over time.

ECONOMICAL
Everyone is hit with rising costs and inflation,
but Sites Reservoir remains the smartest option.

The initial commitment to participate in Sites
Reservoir can be intimidating, but no one is
making this commitment alone. With state and
federal funding and the commitment from every
Participant, Sites Reservoir remains the most
economical solution with the most opportunity
for increasing affordability over time.

Collaboration

STATEWIDE
The Sites Project Authority is made up of local,
state, and federal public agencies from across
California. Together, we’re working to increase
our water supply resiliency while protecting and
enhancing the environment.

COMMITTED
The Sites Project Authority holds firm in its
dedication to deliver and honor commitments.

The Sites Project Authority sets and upholds high
standards that bring Sites Reservoir to reality as a
unique, multi-benefit water storage project that
provides a resilient and reliable water supply.

Opportunity

STABILITY
Sites Reservoir provides stability through longterm career opportunities. Local families have skilled labor/craft opportunities as they build
prosperous careers while supporting their
communities in return.

SECURITY
Water from Sites Reservoir is flexible and resilient
to accommodate various interests and needs.

Every Participant is in control of its share of water
from Sites Reservoir and each chooses when and
how to use the water asset they have stored in
their dedicated storage space in Sites Reservoir.

A VISION OF

A BETTER FUTURE
Shaped by shared values, Sites Reservoir
represents so much more than water storage.

It’s a project driven by a commitment to community, affordability, collaboration, and opportunity.

As our changing climate continues to threaten
our water supply, Sites Reservoir remains a vital
tool for securing California's water future.
6 | Sites Project Authority 2024 Annual Report | 7 193
8 | Sites Project Authority
We’ve made remarkable progress in the last few years
and are entering the next phase of the Sites Reservoir
Project. We will continue to accomplish our remaining
strategic imperatives...together.

Permittable
Defended EIR litigation successfully
The Sites Project Authority cleared a major
hurdle after courts rejected two legal challenges
to the Sites Reservoir Project’s CEQA process and
the certification of the Final EIR. OUTCOME 
The Yolo County Superior Court and the Court of
Appeals found that the Sites Project Authority
fully complied with CEQA in its review of the
Sites Reservoir Project. Without the Sites
Reservoir Project’s certification under Senate Bill
149, the expediency of the Court’s decision could
have been delayed by several years.

Secured incidental take permits for
construction and operations
In collaboration with the CDFW, the Sites Project
Authority secured key permits, including the
Construction and Operations Incidental Take
Permits. OUTCOME  The advancement
of permitting elements provides additional
certainty to Participants that the Sites Reservoir
Project is on target to construction.

Continued the Water Right process
Through ongoing coordination with the State
Water Resources Control Board, the Sites Project
Authority is progressing through the water
right hearing process. OUTCOME  The Sites
Reservoir Project is on track to obtain its Water
Right Order and Permit.

Effective Organization
Continued outreach and tours for
partners and interested parties
Throughout 2024, the Sites Project Authority
hosted Sites Reservoir Project tours for
state, federal, and local partners that shared
information about permitting, design, funding,
and governmental interest. OUTCOME 
The Sites Project Authority continues its
commitment to transparent communication
and keeping partners informed.

Informed potential Participants
The Sites Project Authority continues to receive
requests from agencies throughout California
to participate in the Sites Reservoir Project.

Staff kept these 16 interested parties informed
of progress. OUTCOME  The Sites Project
Authority has broad statewide support from
cities, counties, water agencies, and irrigation
districts throughout the Sacramento Valley,
San Joaquin Valley, Bay Area, and Southern
California. All are working together to advance
the Sites Reservoir Project.

Remained steady through state and
federal leadership changes
The Sites Project Authority continues to work
with all representatives at the local, state, and
federal levels to make the Sites Reservoir Project
a reality. OUTCOME  Ongoing collaboration
with local leadership and governmental
partners has allowed the Sites Reservoir Project
to continue transparent and synchronized
progression toward construction.

Buildable
Completed preliminary design for
all facilities
The Sites Project Authority completed the
preliminary design (approximately 30% design)
for all Sites Reservoir Project facilities and
published the design drawings on its website.

OUTCOME  The Sites Project Authority is
setting the stage to move from planning
to delivery.

Conducted contractor outreach
In partnership with contractors throughout
the nation, the Sites Project Authority hosted
contractor outreach events in February, April,
and September 2024 to inform the delivery
strategy for the Sites Reservoir Project.

OUTCOME  Routine outreach helps keep the
contracting community informed as the Sites
Reservoir Project moves closer to construction.

Affordable
Received additional federal funding
The Sites Project Authority secured an
additional $273.1M in federal appropriations—
$205.6M in March 2024 through the Water
Infrastructure Improvements for the Nation
(WIIN) Act and $67.5M in May 2024 through
the Infrastructure Investment and Jobs Act/
Bipartisan Infrastructure Law. OUTCOME 
With the appropriation of these funds, the Sites
Project Authority has received roughly $517M in
federal appropriations through 2024.

Progressed WIFIA Loan Agreement
Administered by the United States
Environmental Protection Agency (EPA), WIFIA
is a federal loan program with a statutorily
required review process. The Sites Project
Authority continued collaboration with the EPA
to develop the loan documents. OUTCOME 
The Sites Project Authority remains committed
to securing a WIFIA Loan to help reduce costs
to Participants.

HIGHLIGHTS AND MILESTONES
2024
HIGHLIGHT OF THE YEAR: Initiated
Property Acquisition
In collaboration with local landowners who are willing
sellers, the Sites Project Authority entered into an agreement in October 2024 to purchase approximately 817 acres where the inlet/outlet tower, realigned Maxwell Sites Road, and several construction haul roads will be located.

The Sites Project Authority entered into a second property acquisition agreement in November 2024 to purchase
approximately 1,200 acres where the Golden Gate Dam and associated facilities are located. — Fritz Durst,
Chair of the Sites Project
Authority Board of Directors
“This acquisition
represents the first
of many land acquisitions with
local landowners to occur in the
coming years to advance this
much-needed project, decades
in the making.”
2024 Annual Report | 9 194
10 | Sites Project Authority 2024 Annual Report | 11
Blue shading
represents
Participant
service areas;
does not
account for state
and federal
participation.

Shasta Lake
Sacramento River
Sacramento
Sites
Reservoir 9
22 Sacramento Valley
governing agencies
Reservoir Committee
Participants
Throughout 2024, the Sites
Project Authority accumulated 16
water agencies across California
that are now on the waitlist. This
reflects the broad support that
has been a hallmark of the Sites
Reservoir Project.

Sites Reservoir
is locally-led and
supports local values,
and will ultimately
benefit ALL
Californians.

Participants
10 | Sites Project Authority
Sites Reservoir Project Schedule
TRACKS:

Environmental
Planning
Permitting &
Water Rights
Engineering
Construction &
Commissioning
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
30% Design
Construction
Permitting and Water Rights
Value
Planning
Prelim
Design
Revised
Draft

EIR/SDEIS
Final
EIR/
EIS
FULL
OPERATIONS Feasibility Final Design BEGIN
2019 2031 2032 2033 2034
Commissioning
Investor
Commitment
Sites Authority Project Schedule
Source of Funds
Membership Admin/
Authority
$413,000
Membership Water $25,640,000
Proposition 1 Funding $1,136,000
WIIN Act Funding $9,068,000
Interest $1,701,000
TOTAL $37,958,000
Use of Funds
Communications $447,000
Engineering $12,524,000
External Affairs $360,000
General Project Activities $267,000
Permitting $7,278,000
Planning $1,718,000
Program Operations $5,857,000
Real Estate $2,613,000
TOTAL $31,064,000
Approximate Sources
and Uses of Funds
57%
local 25%
state
18%
federal
Cost Share
Since 2015 through December 31, 2024
Remaining
Steadfast
The Sites Reservoir Project remains viable and
is poised to begin construction because of
broad and diverse support across California.
2024 Costs, Funding,
and Schedule
Roughly $155M has been
expended since 2015.
195
Diverse Statewide Support for the Sites Reservoir Project 2024 Annual Report
Printed on recycled paper
Colusa County Water District | Cortina Water District | Davis Water District LaGrande Water District | Zone 3 – Colusa County Flood Control Water Conservation District 196


 






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2025 URBAN WATER MANAGEMENT PLAN
JUNE 2026 / ADMINISTRATIVE DRAFT / CAROLLO

CITY OF AMERICAN CANYON

APPENDIX E ENERGY INTENSITY FORMS
To be included after receipt of requested power bills.
202
2025 URBAN WATER MANAGEMENT PLAN
JUNE 2026 / ADMINISTRATIVE DRAFT / CAROLLO

CITY OF AMERICAN CANYON
APPENDIX F 2024 CONSUMER CONFIDENCE REPORT
203
Published June 2025
2024 ANNUAL
water quality
REPORT
204
To Our Customers
The City of American Canyon is pleased to present its 2024 Water Quality Report, enhanced with a fresh design and content to help you understand where your water comes from and how we keep it safe.

Clean water flows through every part of daily life — shaping the way we live, work and play. From morning routines to evening meals, countless moments of each day depend upon having safe, clean water. American Canyon’s drinking water is rigorously tested to ensure it meets the highest standards, ensuring you can turn on the tap with confidence.

Behind the scenes are dedicated professionals maintaining our treatment plants, testing water quality and planning for future needs. Our water infrastructure supports not just households, but also the businesses and industries that drive our local economy.

From the Phillip West Aquatics Center to our beautiful parks and open spaces, water enhances our recreation and the natural beauty that makes American Canyon such a great place to play. Sustainable water practices help preserve these resources for generations to come.

This report provides insights into your water’s journey from source to tap, including detailed information about water quality, testing results and our ongoing efforts to safeguard American Canyon’s water supply for generations to come.

To learn more, attend any regularly scheduled City Council meeting, held on the first and third Tuesdays of each month at 6:30 p.m. at the American Canyon City Hall Council Chambers at 4381 Broadway, Suite 201.

Sincerely,
Dominic Patrick
Water Systems Manager
If you have questions about this report or your water quality, please contact our Water Systems Manager at (707) 647-5353. For emergencies after hours or on weekends or holidays, the City of American Canyon’s answering service can be reached at (707) 995-8674. 2 205
3 Behind the Tap
American Canyon’s dedicated Water Treatment & Distribution team works tirelessly to deliver safe, reliable water to our community.

Our comprehensive water journey
ensures your safety at every step:
h PUMPED: Water is drawn from our sources
and carefully monitored.
h TREATED: Our dual treatment systems use
advanced filtration systems to remove contaminants.
h DISTRIBUTED: Treated water flows through a
meticulously maintained network.
h RECYCLED: Sustainable practices conserve this precious resource, recycling it for use on landscapes and other irrigation.

Our team of water professionals monitors every stage of treatment, ensuring safe and reliable water is efficiently delivered to your taps.

Your Dollar at Work
American Canyon is committed to wisely stewarding our financial and environmental resources.

Every dollar you pay for water service supports essential functions.

We’re constantly working to lower our operating
expenses. Recent cost-saving initiatives include
repairing major leaks, installing solar power at
our treatment facilities to reduce electricity costs
and implementing advanced membrane filtration
systems with longer lifespans. These sustainable
improvements not only enhance service quality but
also stabilize rates while protecting our vital water
resources for generations to come.

WATER DISTRIBUTION

PROCESS EXPLAINED

PUMPED TREATED DISTRIBUTED RECYCLED
44¢
44¢
8¢
4¢
44¢ Infrastructure
8¢ Customer Service
44¢ Service Delivery
$1 Total
4¢ Administration
2024 Annual Water Quality Report 206
4 City of American Canyon
Your Water at a Glance
American Canyon’s water primarily comes from the
State Water Project (SWP) through the North Bay
Aqueduct (NBA), originating at Barker Slough.

During high-demand periods, we supplement with
treated water purchased from Vallejo and Napa.

Our dual-plant treatment system combines
conventional treatment with advanced membrane
technology to provide exceptional water quality.

Filtered water is disinfected with chlorine and
pH-adjusted before distribution, with all processes
monitored by state-certified operators.

To ensure your water is safe to drink, we follow
rigorous federal and state regulations that limit
contaminants in public water systems. We conduct
comprehensive testing throughout the year,
monitoring for over 100 potential contaminants.

Our tests ensure that American Canyon’s water
consistently meets or exceeds all drinking water
standards set by the U.S. Environmental Protection
Agency and the State Water Resources Control Board.

For more information about water quality and treatment, visit www.DrinkTap.org, a resource designed to explain complex water topics in easy-to-understand formats.

Sacramento River
Lake Oroville
Feather River
Yuba City
Lake
Hennessey
Sacramento-San Joaquin
River Delta
Barker Slough Pumping Plant
American Canyon Water Treatment Plant
Putah South Canal
Sites Reservoir
Milliken Reservoir
Sacramento
Sacramento River
Lake Oroville
Feather River
Yuba City
Lake
Hennessey
American Canyon
Sacramento-San Joaquin
River Delta
Barker Slough Pumping Plant
American Canyon Water Treatment Plant
Putah South Canal
Sites Reservoir
Milliken Reservoir
Sacramento
American Canyon’s Water Sources
Water Transportation
Sacramento River, Feather River, Putah Canal, Sacramento-San Joaquin River Delta, and American Canyon Water Treatment Plant
Main Source: State Water Project (SWP)
Future Source: Sites Reservoir Project
Supplemental Supply (during peaks)
Treated water from the cities of Napa and Vallejo
Vallejo Water
Treatment Plant
Tests Per Year 400in Distribution
786,933,286

MILLION

GALLONS
of Water Delivered Annually
Gallons of Water Saved
from Service Leak Repairs
21,000

CUSTOMERS
SERVED

4.4 ACTIVE
WATER 5 METERS ,900
207
5 2024 Annual Water Quality Report
Capital Improvement Projects
American Canyon continuously invests in its water system to ensure clean, reliable and safe water for our community. The following projects play a key role in that effort.

Ultrafiltration Membrane Replacement
In Progress
This project will replace aging membrane filters at our Water Treatment Plant, increasing capacity by 33% while enhancing removal of contaminants. The upgrade significantly improves drinking water quality and safety for all residents.

Knightsbridge Rehabilitation & Water Main Improvements
In Progress
This ongoing project replaces the 8-inch water main along Knightsbridge Way and its associated courts, while simultaneously upgrading ADA curb ramps and improving crosswalks and pavement conditions throughout the neighborhood.

Rancho Del Mar Paving & Utility Improvements
In Progress
Construction is underway to upgrade water mains, repair sewer systems, enhance pavement and improve ADA accessibility across multiple streets in the Rancho Del Mar neighborhood.

SCADA System Upgrades
In Progress
American Canyon will be upgrading its Supervisory Control and Data Acquisition (SCADA) systems to enhance water quality monitoring, system reliability, regulatory compliance and cybersecurity. 208
Source Water Contaminant Information
The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.

Contaminants that may be present in untreated source water include:

Microbial contaminants, such as viruses and bacteria, that may come from sewage treatment plants, septic systems, agricultural livestock operations and wildlife.

Inorganic contaminants, such as salts and metals, that can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining or farming.

Pesticides and herbicides that may come from a variety of sources such as agriculture, urban stormwater runoff and residential uses.

Organic chemical contaminants, including synthetic and volatile organic chemicals, that are byproducts of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, agricultural application and septic systems.

Radioactive contaminants, which can be naturally occurring or the result of oil and gas production and mining activities. 6 209
Understanding Coliform Bacteriological Results
Coliforms are bacteria that are not harmful at low levels and are naturally present in the environment. Positive samples can result due to improper laboratory sampling analysis, improper sample collection, new construction, repair and/or biological activity occurring with equipment and piping.

The Revised Total Coliform Rule (RTCR) establishes a maximum contaminant level (MCL). It requires public water systems (PWS) to assess sanitary defects and then correct them. Total coliform samples must be collected by PWS at sites which represent water quality throughout the distribution system. Water systems that exceed a specified frequency of total coliform occurrences must conduct an assessment to determine if any sanitary defects exist.

If found, the water system must correct these defects. The state Revised Total Coliform Rule became effective July 1, 2021.

Important Information on Your Drinking Water
The City of American Canyon routinely monitors for contaminants in your drinking water according to federal and state laws. The following pages show the results of our most recent monitoring for the period of January 1, 2024, through December 31, 2024, unless otherwise noted.

All drinking water, including bottled water, may be reasonably expected to contain at least small amounts of some contaminants.

The presence of contaminants does not necessarily indicate that the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency’s Safe Drinking Water Hotline att 1-800-426-4791.

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

Environmental Protection Agency (EPA) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline at 1-800-426-4791.
7 2024 Annual Water Quality Report 210
8 City of American Canyon
About Your Water Quality Report
Important Definitions
To aid in understanding the information on the following pages, American Canyon has compiled a list of important definitions and acronyms below.

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

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

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

Maximum Residual Disinfectant Level (MRDL): The level of a disinfectant added for water treatment that cannot be exceeded at the consumer’s tap.

Maximum Residual Disinfectant Level Goal (MRDLG): The level of a disinfectant added for water treatment below which there is no known or expected health risk. MRDLGs are set by the US EPA.

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

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

Treatment Technique (TT): A required process intended to reduce the level of a contaminant in drinking water.
211
9 Acronyms
CDPH — California Department of Public Health
DBP — Disinfection Byproducts
HAA — Haloacetic Acids
NA — Not Analyzed
N/A — Not Applicable
NBA — North Bay Aqueduct
ND — None Detected
NL — Notification Level
NS — No Standard
SWP — State Water Project
THM — Trihalomethanes
TOC — Total Organic Carbon
uS/cm — microsiemens per centimeter
US EPA — United States Environmental
Protection Agency
μg/L — Microgram per liter
Concentration Comparisons
Trace chemicals in water are typically measured in parts per million (ppm), parts per billion (ppb) or parts per trillion (ppt). The following comparisons help provide real-life context for the scale of those small concentrations.

Part per Million (PPM)
1 drop
in a 13-gallon fish tank
Part per Billion (PPB)
1 drop
spread across 50 Olympic-sized
swimming pools
Part per Trillion (PPT)
1 drop
in a lake that is
6 square miles
2024 Annual Water Quality Report
212
10 City of American Canyon
Water Quality Data
SAMPLING RESULTS SHOWING THE DETECTION OF COLIFORM BACTERIA 2024 Microbiological
Contaminants
Highest # of
Detections
# of Months
in Violation MCL MCLG Typical Source
of Bacteria
Total Coliform Bacteria
(Total Coliform Rule) 1 0 Greater than 5% of monthly samples positive. 0 Naturally present in the environment
Fecal Coliform or E.coli
(Total Coliform Rule) 0 0
A routine sample and a repeat sample detect
total coliform and either sample also detects
fecal coliform or E. coli
0 Human and animal
fecal waste
Note: The City of American Canyon analyzes a minimum of 20 water samples per month throughout the year in the water distribution system for coliform bacteria.

SAMPLING RESULTS SHOWING THE DETECTION OF LEAD AND COPPER 2024 Lead and Copper Samples
Collected
90th Percentile
Level Detected
# of Sites
Exceeding AL AL PHG Typical Source of Contaminant
Lead (μg/L)
September 2024 30 0 (μg/L) 0 15 <2
Internal corrosion of household water plumbing
systems; discharges from industrial manufacturers;
erosion of natural deposits
Copper (μg/L)
September 2024 30 0 (μg/L) 0 1300 3
Internal corrosion of household plumbing systems;
erosion of natural deposits; leaching from
wood preservatives
SAMPLING RESULTS FOR SODIUM, HARDNESS AND GENERAL CHEMISTRY 2024 Contaminant
(CCR Reporting Units) Samples Dates Avg. Level
Detected
Range of
Detections AL PHG
(MCLG) DLR Typical Source of Contaminant
Conductivity uS/cm Quarterly 2024 347 214 – 579 N/A N/A 1.0 Generally found in ground & surface water Hardness
(mg/L as CaC03) Monthly 2024 88.1 61 – 141 N/A N/A 5.0 Generally found in ground & surface water Calcium (mg/L) Monthly 2024 15.5 12.0 – 24.0 N/A N/A 1.0 Naturally occurring dissolved mineral Magnesium (mg/L) Monthly 2024 11.9 7.6 – 20.0 N/A N/A 1.0 Naturally occurring dissolved mineral pH Daily 2024 8.20 7.65 – 8.64 N/A N/A - pH 6.5 to 8.5 is typical for drinking water Alkalinity
(mg/L as CaCO3) Monthly 2024 85.3 40.0 – 200.0 N/A N/A - Measures the buffering capacity of the water DETECTION OF UNREGULATED CONTAMINANTS 2024
Contaminant (CCR
Reporting Units) Sample Dates Avg. Level
Detected
Range of
Detections MRL MCL RL PHG/AL Typical Source of Contaminant PFOS (ng/L) Quarterly 2024 ND ND N/A N/A 6.5 40
Man made. Used in consumer
products, fire retarding foam
and other industrial processes
Lithium (g/L) Quarterly 2024 ND ND N/A N/A - -
Man made. Used in consumer
products, fire retarding foam
and other industrial processes
213
11 DETECTION OF CONTAMINANTS WITH A PRIMARY DRINKING WATER STANDARD 2024 Contaminant
(CCR Reporting Units) Samples Dates Avg. Level
Detected
Range of
Detections
MCL
[MRDL]

PHG (MCLG)
[MRDLG] DLR Typical Source of Contaminant
Chlorine
(Distribution
system) (mg/L)
Daily 2024 1.6 .21 – 2.56 4.0 4.0 - Disinfectant required by regulation to be added to drinking water.

Arsenic (μg/L) Quarterly 2024 ND ND 10 0.004 2.0 Erosion of natural deposits; residual from some water treatment process
Barium (mg/L) Quarterly 2024 ND ND 1000 2 100
Discharge of oil drilling wastes and from metal
refineries; erosion of natural deposits.

Some people who drink water containing
barium in excess of the MCL over many years may
experience an increase in blood pressure.

Nitrate (mg/L as
NO3) Quarterly 2024 ND ND 10 45 2
Runoff and leaching from fertilizer use; leaching
from septic tanks and sewage; erosion of natural
deposits. Infants below the age of six months who
drink water containing nitrate in excess of the MCL
may quickly become seriously ill and, if untreated,
may die because high nitrate levels can interfere with
the capacity of the infant’s blood to carry oxygen.

Symptoms include shortness of breath and blueness
of the skin. High nitrate levels may affect the oxygencarrying ability of the blood of pregnant women.

Total
Trihalomethanes*
(Distribution system) (ppb)
Quarterly 2024 70.8 27.5 –
126.9 80 N/A - By-product of drinking water disinfection.

Total of Five
Haloacetic Acids*
HAA5 (Distribution
system) (ppb)
Quarterly 2024 60.8 25.2 –
124.5 60 N/A - By-product of drinking water disinfection.

Total Organic
Carbon (TOC) (μg/L) Monthly 2024 2.5 1.59 – 4.1 N/A N/A 0.3 Total organic carbon (TOC) has no health effects.

However, total organic carbon provides a medium for
the formation of disinfection byproducts.

Turbidity (NTU)
Membrane Plant Daily 2024 0.047

0.033 –

2.002
5 TT TT Soil runoff. TT = 95% of samples must be <0.3NTU Turbidity (NTU)
Conventional Plant Daily 2024 0.132

0.090 –

3.001
5 TT TT Soil runoff. TT = 95% of samples must be <0.3NTU Flouride (mg/L) Quarterly 2024 ND 0.00 – .116 2.0 1 0.10 Erosion of natural deposits; water additive that
promotes strong teeth; discharge from fertilizer
and aluminum factories
DETECTION OF CONTAMINANTS WITH A SECONDARY DRINKING WATER STANDARD 2024 Contaminant (CCR
Reporting Units) Sample Dates Avg. Level
Detected
Range of
Detections SMCL PHG
(MCLG) DLR Typical Source of Contaminant
Manganese
(mg/L) Quarterly 2024 ND ND 50 N/A 20 Leaching from natural deposits Aluminum (ug/L) Quarterly 2024 16 0 – 54 50 N/A 200 Runoff/leaching from natural deposits; industrial waste
Color Quarterly 2024 ND ND 15 N/A N/A Natural occurring organic materials Odor Quarterly 2024 ND ND 3 N/A N/A Natural occurring organic materials Sampling results for US EPA UNREGULATED MONITORING RULE (UCMR 5) (SWRCB DDW PFOA/PFOS) All Public Water Systems (PWSs) serving 10,000 or more service connections are required by US EPA to participate in this program. This data serves as a primary source of occurrence and exposure information that the US EPA uses to develop regulatory decisions. Large PWSs pay for their own testing costs. *In 2024, our water system exceeded the MCL for Disinfection Byproducts (DBP). The MCL is based on the running annual average (RAA) of four quarters’ worth of sample data.

DBPs are formed as a by-product of drinking water chlorination. This chemical reaction occurs when chlorine combines with naturally occurring organic matter in water. The results of these tests revealed levels exceeding the MCL (Maximum Contaminant Level). The MCL is 80 µg/L for TTHMs (Total Trihalomethanes) and 60 µg/L for HAA5 (Haloacetic Acids).

Some people who drink water containing DBPs in excess of the MCL over many years may experience problems with their liver, kidneys or central nervous systems, and may have an increased risk of getting cancer. We are in the process of exploring the various options to reduce DBPs in your water supply. 2024 Annual Water Quality Report
214
Annual Water Quality Report
Published June 2025
Translations Available
The City of American Canyon’s 2024 Annual Water Quality Report will be available in Spanish and Tagalog at AmericanCanyon.gov/WaterQuality by July 1, 2025.

El Informe anual sobre la calidad del agua de 2024 de la ciudad de American Canyon estará disponible en AmericanCanyon.gov/WaterQuality antes del 1 de julio de 2025.

Ang 2024 Taunang Ulat sa Kalidad ng Tubig ng Lungsod ng American Canyon ay magiging available sa AmericanCanyon.gov/WaterQuality bago ang Hulyo 1, 2025.

Rate Assistance Available
Rate assistance programs are available for qualifying customers.

Visit AmericanCanyon.gov/Assistance for more information.

Customer Water Portal
American Canyon uses Advanced Metering Infrastructure (AMI) to help conserve and prevent water loss.

To empower our utility customers, we provide a Customer Water Usage Portal with several capabilities, including water tracking, comparison data and alerts to notify you of high water consumption. Learn more and create your account at AmericanCanyon.gov/MyWaterPortal.

Visit AmericanCanyon.gov for more information.
@CityOfAmericanCanyon @CityOfAmericanCanyon
@CityOfAmericanCanyon City of American Canyon
215
2025 URBAN WATER MANAGEMENT PLAN
JUNE 2026 / ADMINISTRATIVE DRAFT / CAROLLO

CITY OF AMERICAN CANYON

APPENDIX G CITY MUNICIPAL CODE WATER
CONSERVATION PLAN CHAPTER 13.14
216




















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