Agenda, regular meeting — Sonoma City Council, June 17, 2026 (part 1 of 4)

City Council:

Ron Wellander, Mayor
Sandra Lowe, Vice Mayor
Jack Ding
Patricia Farrar-Rivas
John Gurney

REGULAR MEETING AGENDA

OF THE SONOMA CITY COUNCIL
City Council Chambers, 177 First Street West
Wednesday, June 17, 2026
https://us06web.zoom.us/j/84876986131
6:00 PM Regular Meeting

ACCESSING PUBLIC MEETINGS
As a public service to the community, City Council meetings are held in-person, and viewable through a live webcast on the City’s CivicWeb Portal at https://sonomacity.civicweb.net/Portal/Video.aspx, City of Sonoma YouTube channel at https://www.youtube.com/channel/UChZjUrg2rNLYxTgQHhFy-Tg, and televised on Comcast Cable Channel 27. Members of the public can also view the meeting via ZOOM, at https://us06web.zoom.us/j/84876986131.

If a technical issue arises with Zoom video or the listening phone dial-in option, the City Council meeting will continue unless a Council Member is participating remotely pursuant to the provisions of Government Code Section 54953.8.3.

Members of the public who wish to address the Council by providing public comments during the meeting may do so in-person in the Council Chambers at 177 First Street West, where the meeting is being publicly held. As an alternative, members of the public may also provide written public comment submitted via the City’s online Public Comment form at https://sonomacity.civicweb.net/Portal/CitizenEngagement.aspx or by email to:
[email protected]
PROCESS FOR COMMENTS FROM THE PUBLIC: There will be two opportunities for members of the public to address items not appearing on the agenda. The early public comment period, Agenda Item 1, will be limited to ten speakers. Each speaker will be allowed up to two minutes. Speakers who do not have an opportunity to speak during the first public comment section will be allowed to make their comments during the later public comment period, Agenda Item 10, provided there were more than 10 people in the first public comment section.

When the Mayor announces these agenda items, please form a line to speak.

In the event a Council Member participates remotely for just cause Government Code Section 54953.8.3, the City will allow for public comment through the Zoom link.

In accordance with the Americans with Disabilities Act, if you need special assistance to participate in this meeting, please contact the City Clerk (707) 933-2216. Notification 48 hours before the meeting will enable the City to make reasonable arrangements to ensure accessibility to this meeting.

Be Courteous - TURN OFF your cell phones and watches while the meeting is in session.

The City Council may discuss and/or take action on any or all of the items listed on the agenda irrespective of how the items are described.

No new items will begin after 9:00pm unless a majority of the members present vote to allow the items to be heard.

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REGULAR MEETING

CONVENE, CALL TO ORDER & PLEDGE OF ALLEGIANCE
ROLL CALL (Lowe, Ding, Farrar-Rivas, Gurney, Wellander,)

REPORT ON CLOSED SESSION

APPROVAL OF THE AGENDA

1. COMMENTS FROM THE PUBLIC
At this time members of the public may address the Council on matters not listed on this agenda, but which are within the subject matter jurisdiction of the Council. This public comment period will be limited to ten speakers. Each speaker will be allowed up to two minutes.

Speakers who do not have an opportunity to speak during the first public comment section will be allowed to make their comments during the later public comment period, Agenda Item 10, provided there were more than 10 people in the first public comment section. When the Mayor announces these agenda items, please form a line to speak.

Under State Law, unless otherwise permitted under the Ralph M. Brown Act, the merits of the matters presented under this item cannot be discussed or acted upon by the City Council at this time. For items appearing on the agenda, the public will be invited to make comments at the time the item comes up for Council consideration. Please begin by stating your name.

2. MEETING DEDICATIONS

3. COUNCILMEMBERS’ REPORTS AND COMMENTS
Committee Reports - Council Members are appointed to various boards and committees - local, county-wide and regional. Any updates from a council member will be shared at this time.

A list of all appointments is available on our City Website for easy reference.

Council Members may also make appointments to city commissions at this time.

4. CITY MANAGER COMMENTS AND ANNOUNCEMENTS

5. CITY ATTORNEY COMMENTS

6. PRESENTATIONS

6.1: Sonoma Valley Fire District 2025 Annual Report and Fire Update (Steve Akre, Fire Chief)
SVFD 2025 Annual Report
SVFD 2026 Fire Season Update
6 - 13

7. CONSENT CALENDAR – CITY COUNCIL
All items listed on the Consent Calendar are considered to be routine and will be acted upon by a single motion. There will be no separate discussion of these items unless members of the Council or staff request specific items to be removed for separate action.

7.1: Waive further reading and Authorize Introduction and/or Adoption of Ordinances by Title Only. (Standard procedural action - no backup information provided)

7.2: Accept the Expenditure Report for the Month of May 2026 (Ryan Kodama, Accounting Manager)
RECOMMENDATION: Accept report
Agenda Report - Expenditure Report May 2026 - Pdf
14 - 22

7.3: Adopt Resolutions 1) Calling for the Holding of a General Municipal Election to be Held on Tuesday, November 3, 2026, for the Election of Certain Officers as 23 - 28

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Required by the Provisions of the Laws of the State of California Relating to General Law Cities; and 2) Requesting the Board of Supervisors of the County of Sonoma to Consolidate a General Municipal Election to be Held on Tuesday, November 3, 2026 with the Statewide General Election to be Held on Tuesday, November 3, 2026 (Rebekah Barr, MMC, City Clerk) RECOMMENDATION: Adopt the resolutions.

Agenda Report - 2026 General Municipal Election - Pdf

7.4: Adopt a Resolution Authorizing the Interim City Manager to Execute a Quit Claim Deed for APN(s): 018-391-019, 018-391-018 - (871 and 879 Hayes Street) to the Sonoma Valley County Sanitation District (Ashley Cotter, PW & Admin Project Manager)
RECOMMENDATION: Adopt the Resolution.

Agenda Report - Quit Claim Deed for Sewer Easement on Hayes Street - Pdf 29 - 40

7.5: Adopt a Resolution Authorizing the City Manager to Execute a Fourth Amendment to the Professional Services Agreement with 4LEAF, Inc. to Extend Services for Building Official Services (Jennifer Gates, AICP, Community Development Director)
RECOMMENDATION: Adopt the resolution.

Agenda Report - 4Leaf Contract 4th Amendment - Pdf
41 - 52

7.6: Adopt a Resolution Approving the Fiscal Year 2026-27 Road Pavement Preservation and Rehabilitation Projects as the Projects for Fiscal Year 2026- 27 Funded by Senate Bill 1: The Road Repair and Accountability Act of 2017 and Authorize the Public Works Department to Submit these Projects to the California Transportation Commission (Ashley Cotter, PW & Admin Project Manager)
RECOMMENDATION: Adopt the Resolution.

Agenda Report - SB1 RMRA FY26-27 Resolution - Pdf
53 - 58

8. PUBLIC HEARING

8.1: Public Hearing for the Updated Urban Water Management Plan and Water Shortage Contingency Plan (Ashley Cotter, PW & Admin Project Manager) RECOMMENDATION: Conduct a public hearing for the updated Urban Water Management Plan and Water Shortage Contingency Plan.

Agenda Report - Public Hearing - Urban Water Management Plan - Pdf 59 - 361

9. REGULAR CALENDAR – CITY COUNCIL
(Matters requiring discussion and/or action by the City Council)

9.1: A Resolution Adopting the 2025 Urban Water Management Plan and Water Shortage Contingency Plan (Ashley Cotter, PW & Admin Project Manager) RECOMMENDATION: Adopt a Resolution Adopting the 2025 Urban Water Management Plan and Water Shortage Contingency Plan.

Agenda Report - Adoption - UMWP and WSCP - Pdf
362 - 365

9.2: Review, Discussion, and Potential Approval of a Public Art Donation and Installation Submitted by Peter Hassen (Dave Jahns, Parks & Recreation Director)
RECOMMENDATION: Review the proposed donation of Peter Hassen’s sculpture and approve the public art donation and installation, including acceptance of the artwork and its future installation, subject to final site selection and verification of ownership documentation.
366 - 408

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Agenda Report - Public Art Donation: Peter Hassen - Pdf

9.3: Discussion, Consideration and Possible Action to Approve the FY 2026-27 City of
Sonoma Operating and Capital Improvement Budget with the Following Resolutions (Cristine Alilovich, Interim City Manager):

1. A Resolution of the City Council of the City of Sonoma and the Successor Agency of the Former Sonoma Community Development Agency Adopting the FY 2026-27 City of Sonoma Operating Budget; and Approving Community Fund Programming

2. A Resolution of the City Council of the City of Sonoma Adopting the 2026-31 Five-Year Capital Improvement Program; and Authorizing Capital Project Funds Appropriated and
Unspent in FY 2025-26 to be Rolled into the FY 2026-27 Budget

3. A Resolution of the City Council of the City of Sonoma Authorizing the Interim City Manager to Approve the Carryforward Operational Funds for One Time Projects Appropriated and Unspent in FY 2025-26 to be Rolled into the FY 2026-27 Budget

4. A Resolution of the City Council of the City of Sonoma Authorizing the Interim City Manager to Fund Recreation and Community Service Discretionary Funding Program for the FY 2026-27 Budget

5. A Resolution of the City Council of the City of Sonoma Approving and Creating a New Job Classification for a Recreation Coordinator (Part-Time) Position and Adopting the Job Description and Salary Range for the Position

6. A Resolution of the City Council of the City of Sonoma Establishing the Appropriations Limit for the FY 2026-27
RECOMMENDATION: Approve the Resolutions.

Agenda Report - Approve the FY 2026-27 City of Sonoma Operating and Capital Improvement Budget - Pdf
409 - 454

10. SECOND PUBLIC COMMENT (ONLY REQUIRED IF EARLIER PUBLIC SPEAKERS

REMAIN)
At this time members of the public who did not have the opportunity to speak during the early comment period may address the Council on matters not listed on this agenda, but which are within the subject matter jurisdiction of the Council. Each speaker will be allowed up to two minutes. Please form a line to speak.

11. ADJOURNMENT
I do hereby certify that a copy of the foregoing agenda was posted as legally required. Rebekah Barr, MMC, City Clerk.
***********************************************************************************************************************************

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Copies of all staff reports and documents subject to disclosure that relate to any item of business referred to on the agenda are usually available for public inspection the Wednesday before each regularly scheduled meeting at City Hall, located at No. 1 The Plaza, Sonoma CA. Any documents subject to disclosure that are provided to all, or a majority of all, of the members of the City Council regarding any item on this agenda after the agenda has been distributed will be made available for inspection at the City Clerk’s office, No. 1 The Plaza, Sonoma CA during regular business hours. If you challenge the action of the City Council in court, you may be limited to raising only those issues you or someone else raised at the public hearing described on the agenda or in written correspondence delivered to the City Clerk at or prior to the public hearing.

City of Sonoma's Commission and Committee Roster: 2024 Commission _ Committees Roster 12.19.2024 Appointments to Commission/Committees: The Council may establish and make appointments to a Council committee (made up of two Council Members) with respect to any item appearing on this agenda.

Closed Session: If action is taken during a Closed Session meeting that is required to be reported out at this meeting, the Council will return to Open Session and report out immediately. However, if the Council is unable to do so due to time constraints, it will report out at the immediately following Regular Council Meeting under "REPORT ON CLOSED SESSION".

Motion for Consideration: A Council Member voting with the majority on any item appearing on this agenda may move for reconsideration of that vote provided the motion is in conformance with the rules adopted by the Council governing such motions.

NOTE: Portions of this document may have been drafted with support from AI-based tools, consistent with City of Sonoma policy on use of artificial intelligence. All information represented in this document has been reviewed by City of Sonoma staff.

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6/12/2026
1 SONOMA VALLEY FIRE DISTRICT
2025 Annual Report
An Overview for the City Council of the City of Sonoma
Presented by Stephen Akre, Fire Chief
Proudly serving Agua Caliente, Boyes Hot Springs, the City of Sonoma, El Verano, Glen Ellen, Kenwood, Mayacamas, and the greater Sonoma Valley. YEAR IN REVIEW 2025 at a Glance
A year of consolidation, full staffing, and continued Measure H investment across the Valley.

Kenwood Consolidation
Kenwood Fire Protection District consolidated into SVFD effective July 1, 2025, bringing paramedic service to Kenwood and improving regional coordination.

Full Operational Staffing
Reached full staffing as of January 1, 2026, with all 22 daily line positions filled by permanent personnel in a competitive national hiring market.

Measure H, Year Two
Second year of Measure H funding added Firefighter
Paramedic positions, staffed a third ambulance, and
brought every station to a three person daily minimum.

ISO Review Completed
Completed a full ISO Public Protection Classification
review for both the City of Sonoma and the District,
benchmarking capabilities nationally. City of Sonoma
Class 1 - The highest ranking.
1 2
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6/12/2026
2 SERVICE DEMAND By the Numbers
5,806
TOTAL INCIDENTS IN 2025
4:50
Median total response time
95%
Incidents handled internally
64%
Calls were EMS related 24Fires
Incidents by District / Zone
RESPONSE CAPABILITY Operations & EMS
Borderless Dispatch Now Fully Operational
The countywide boundary drop model sends the closest available unit to every 911 call regardless of jurisdiction, improving response times across Sonoma Valley.
50 Portable Radios Replaced
Aging radios, many over 20 years old, were replaced with FIRESCOPE compliant units that improve interoperability and firefighter safety on scene. Urban Search & Rescue Task Force Twelve SVFD members joined Oakland US&R Task Force 4, strengthening structural collapse rescue and large scale disaster readiness for the region.

EMS Modernization
A new Medic 301 ambulance entered service, all first out ambulances now carry power loaders, and every front line unit received an upgraded LifePak 35 cardiac monitor. Seven new paramedics were accredited. 3 4
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6/12/2026
3 RISK REDUCTION
Prevention & Community Resilience
154
Fire permits and plan reviews completed
+180%
Growth in annual chipping jobs since 2022
2New Firewise communities created in 2025
Programs Protecting the Valley
Triennial Fire Code adopted. Latest California Fire Code cycle adopted with local amendments.

Regional Vegetation Coordinator. New Measure H position leading fuels reduction and defensible space.

Safer From Wildfires recognition. Named to the Community Risk Reduction List with the state framework.

Unmanned Aircraft Unit. Drones support mapping, pre-incident planning, and hazard assessment.

Canine Therapy & Public Education. Peer support plus Freddie the Fire Truck for youth outreach.

INVESTMENT & OUTLOOK
Stewardship and the Path to 2026
$22.6M
FY 2024-25 adopted balanced budget
$6.5M
City of Sonoma contract for fire services
85%
Of the budget funds personnel and benefits
Priorities for 2026
• Advance Fire Station 2 development and the Kenwood station remodel • Continue Measure H staffing, apparatus, and fleet modernization • Expand vegetation management and wildfire mitigation coordination • Sustain full staffing and strong recruitment pipelines • Strengthen financial sustainability and grant acquisition Thank you for your continued partnership in safety.
sonomavalleyfire.org | 707-996-2102
5 6
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6/12/2026
1 2026 Fire Season
• Statewide Mutual Aid
• Sandy Fire- 2,183 acres(Ventura County)- May 20th
• Type 3 Engine
• 1 Chief Officer
• Annual refresher training completed
• Line personnel • Chief Officers/Overhead
Statewide Support
1 2
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6/12/2026
2 • Local Mutual Aid
• Assisted with small fires in Schell-Vista Fire District • Local Prevention Efforts
• 211 Defensible Space Inspections Completed so far
• 6 Weed Abatement Complaints in the City
• 5 Weed Complaints in Unincorporated areas
• Chipper program and roadside vegetation management
• Prescribed burns- Agua Caliente June 13th, more planned for Fall • Collaborative efforts with external organizations- Fire Safe Sonoma, Ecology Center • 2 New Firewise Communities, working on 4 others (one in City limits) • New- Diamond A & London Ranch Road
Local Support and Prevention
Weather/Fire Season Outlook
• Long range is for above normal temperatures over next 4 months • Fuel moistures are showing above normal drying- currently in the late July timeframe- early start to season
• El Nino could lead to stronger wind patterns- either On or Off shore • El Nino could also lead to less daily fog- keeping fuels on the drier side
• Locally, can always have that one fire that starts with prime conditions
3 4
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6/12/2026
3 General • ISO Rating: Class 1 for City
• Less than 1% of fire agencies in the Nation receive
• Purchased three new fire engines (2-Type 1, Type 3)
• Renumbering of apparatus
• REDCOM- Duty Officers in dispatch during RFW/events
5 6
Agenda Item #6.1:

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6/12/2026
4 City of Sonoma- Fire Hazard Severity Zones
Red- Very High
Orange- High
Yellow- Moderate
Grey- Low or below
Insurability for Businesses/Homeowners
• Cal Chiefs
• Natural Catastrophe Resiliency Study
• Safer From Wildfires Framework
• California Safe Homes Act (AB 888)
• California Wildfire Public Model Act (SB 429)
• Insurance and Wildfire Safety Act (AB 1)
• California Fair Plan Reform
7 8
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6/12/2026
5 Insurability for Businesses/Homeowners
• Sonoma Valley Fire District
• Chipping Service and Roadside Vegetation
• Regional Vegetation Management Coordinator
• Educational property assessments
• Fire Risk Reduction Community Designation
• Firewise Communities
• Prescribed Burns
Preparedness
• Personal • Business
• Defensible space
• Home hardening
• Communications Plan!!
Additional Resources @
• www.sonomavalleyfire.org or 707-996-2102
9 10
Agenda Item #6.1:

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City of Sonoma
Agenda Item Summary
Meeting: City Council - 17 Jun 2026
Department
Administration
Staff Contact
Ryan Kodama, Accounting Manager
Agenda Item Title
Accept the Expenditure Report for the Month of May 2026 Summary
The attached report shows disbursements for the month of May 2026.

Resolution 24-2026 increased the budget in Fund 610 (Longterm Building Maintenance) by $25,074.33 for additional funding for the facilities condition assessment.

A detailed list of disbursements is available at the web site indicated at the bottom of the report.

Recommended Council Action
Accept report
Alternative Actions
Council discretion
Financial Impact
Monthly Payables Report, May 2026
Environmental Review Status
Environmental Impact Report
Negative Declaration
Exempt
Not Applicable
Approved/Certified
No Action Required
Action Requested
Attachments
Disbursement Report May 2026
Fund Glossary
Resolution 24-2026
Agenda Item #7.2:

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DISBURSEMENT REPORT MAY 2026
Year to Date Monthly Year to Date Annual Percent of Fund Fund Revenue Expenditure Expenditure Budget Budget Balance General Fund 30000 23,916,227 29,543,090 81% 17,065,750 City Council 41001 10,819 111,676 150,401 74%
City Clerk 41002 26,356 395,672 463,743 85%
City Manager 41003 98,666 1,131,824 1,254,317 90%
Finance 41004 46,735 672,647 903,151 74%
City Attorney 41005 13,263 246,247 285,000 86%
Police 42101 566,456 6,187,519 7,778,032 80%
Fire 42201 587,613 7,506,815 8,122,755 92%
Public Works - Admin 43020 52,334 529,107 637,510 83%
Public Works - Streets 43022 120,996 1,328,900 1,498,358 89% Parks & Recreation 43023 118,416 1,374,916 1,869,606 74% Planning 43030 64,398 1,274,566 2,014,937 63%
Building 43040 52,681 822,317 1,216,111 68%
Community Activities 43101 82,244 1,037,770 1,223,734 85% Successor Agency 43199 3,892 105,018 184,500 57%
Non-Departmental 43200 64,543 744,324 829,040 90%
Emergency Response 43201 16,080 75,169 117,189 64%
Public Information 43203 11,627 160,884 208,492 77%
Transfers 43999 - 1,071,025 1,220,000 88%
Total General Fund Expenditures 24,776,395 1,937,120 29,976,876 83% Other Funds
Public Education & Gov 202 27,959 - 18,318 - 0% (14,372) Strong Motion 203 233 - - - 0% 7,012
Asset Forfeiture 211 457 - - - 0% 17,828
SLESF C.O.P.S Grant 217 112,433 - 120,000 120,000 100% 408,577 Bond Property 220 - - - - 0% (19,144)
Maysonnave Property 221 - - - - 0% (15,195)
Schell Drainage 234 5,527 - - - 0% 74,609
Abandoned Vehicle 240 1,103 1,358 11,029 15,000 74% (39,914) Streets/Transport/Drain 301 303,952 50 207,518 300,000 69% 127,491 Gas Tax 302 273,112 44,689 194,571 414,545 47% 924,797
SB-1Road Maint 303 238,330 3,225 108,552 204,200 53% 790,966 Parks & Facilities 304 637,361 111,979 212,213 625,000 34% 507,977 Fire Measure H 312 394,120 - 392,623 708,000 55% 1,497
Transportation Measure M 313 172,428 2,697 202,697 200,000 101% 410,886 Parks-In-Lieu/Quimby Act 314 21,041 - - 225,000 0% 21,041 Parks Measure M 315 135,619 6,734 6,734 84,999 8% 793,621 Prop 68 Parks 316 - - - - 0% (162,690)
Successor Agency 391 2,629,252 1,170,003 2,550,456 2,599,306 98% (17,735,318) CREBS 495 - - - - 0% -
2012 POB 498 34 - - - 0% (5,197)
Cemeteries 501 341,991 35,867 350,461 791,396 44% (2,198,190) Cemetery Replacement 502 - - - - 0% 288,613
Cemetery Endowment 504 34,590 - 47,000 47,000 100% 730,521 Water Utility 510 7,366,275 395,269 5,648,524 7,375,412 77% 11,301,439 Water CIP 512 727,721 - 45,622 655,000 7% 1,149,188
Water Equip Replacement 513 18,978 - - - 0% 745,236
EMS Equip Replacement 521 2,239 - - - 0% 86,888
Mgmt Information Srvcs 601 546,909 24,444 455,239 638,288 71% 481,188 Vehicle Replacement 603 860,206 - 433,814 693,548 63% 1,677,313 Insurance 604 1,333 - - - 0% 51,998
Building Maintenance 610 568,718 17,240 252,616 416,220 61% 3,901,937 Computer Loan 614 1,705 - - - 0% 66,752
Hardscape Maint 615 693 - - - 0% 27,117
Admin Hearings 620 226 - - - 0% 1,051
Grants Restricted 630 28,031 - 19,736 - 0% 39,840
Culture Fine Art 701 318 - - - 0% 12,644
Tree Trust 702 500 - - - 0% 19,913
Public Art 703 27,127 - 766 35,000 2% 97,217
Pool Scholarship 715 5,205 - 25,000 25,000 100% 185,065 Senior Housing 731 4,857 - 25,454 25,454 100% 195,933
Housing Trust 732 480,625 - 250,000 250,000 100% 2,787,221 IGT 796 1,169,211 - 1,262,392 1,585,968 80% 1,914,903
SVFRA Operations 798 24,768 - - - 0% 618,027
TOTAL 3,750,675 41,081,413 37,617,731 48,011,213 78%
Monthly disbursement detail reports can be found at www.sonomacity.org/financial-documents Agenda Item #7.2:

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City of Sonoma

CITY OF SONOMA

FUND DESCRIPTIONS
General Fund (Fund 100): The general operating fund of the City is used to account for all financial resources except those that require accounting in another fund.

Public Education & Government (Fund 202): Special revenue fund accumulates fees from telecommunication operators to support public, educational and government telecommunications, including broadcasting public meetings. Costs associated with acquiring equipment, renovating and constructing PEG-related facilities and broadcasting are paid from this fund.

Strong Motion (Fund 203): Accounts for State of California "strong motion" fees paid by building permit applicants. Funds are paid regularly to State Department of Conservation.

Asset Forfeiture (Fund 211): Accounts for funds received from seizure and forfeiture of assets that represent the proceeds of, or were used to facilitate, crime. Funds are expended according to legal restrictions.

SLESF (Supplemental Law Enforcement Services Fund)/COPS (Citizen Option for Public Safety) (Fund 217): Supplemental law enforcement funding is distributed by the State to the County which passes through the funding to local agencies. These funds have traditionally been used to support the costs of the Community Service Officer staff in the Police Department.

Bond Property (Fund 220): The Bond Property, a six acre parcel located at 19990 Seventh Street, was bequeathed to the city in 1977 by Pauline Bond, for the purpose of “creating and maintaining a public park” and is now home to the Sonoma Garden Center. The parcel is leased to the Sonoma Ecology Center who maintains the property and administers public programs at the site. Not Currently Active Fund Maysonnave Property (Fund 221): The Maysonnave Property, consisting of two parcels of land totaling

1.44 acres located at 291 and 289 First Street East, was bequeathed to the city in 1990 by Henri Maysonave for the purpose of “creating and maintaining a public park”. The parcel at 291 First Street East is leased to the League for Historic Preservation who maintains the property and administers public programs at the site while the parcel identified as 289 First Street East is leased to the Valley of the Moon Petanque Club, which maintains the property and administers public programs at that site. Not Currently Active Fund
Schell Drainage (Fund 234): Accounts for funds used for tracking of mitigation fees for specific projects.

Not Currently Active Fund
Abandoned Vehicle (Fund 240): Accounts for funds received from the Sonoma County Abandoned Vehicle Abatement (SCAVA) program and must be expended in compliance with legal restrictions.

Streets/Transport/Drain (Fund 301): This Capital Improvement Fund represents a transfer of funds from the General Fund to support improvements to the City's streets, sidewalks, bikeways, and storm drainage system.

Agenda Item #7.2:

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City of Sonoma
Gas Tax (Fund 302): The State of California imposes per-gallon excise taxes and sales taxes on gasoline and diesel fuel, and registration taxes on motor vehicles with allocations dedicated to transportation purposes. Gas taxes can be used for any street or road purpose; however, it is best practice to focus on maintenance and rehabilitation costs only.

SB-1 Road Maintenance (Fund 303): The Road Repair and Accountability Act of 2017 (SB1) increased pergallon excise taxes and sales taxes on gasoline and diesel fuel, and vehicle registration taxes, stabilized price-based fuel tax rates and provided for inflationary adjustments to rates in future years. Funds may be used for road maintenance and rehabilitation, safety projects, “complete street” components, and traffic control devices.

Parks & Facilities (Fund 304): This Capital Improvement Fund represents a transfer of funds from the General Fund to support improvements to the City's 17 parks encompassing nearly 40 acres, nine play structures, two public restrooms, Class I bike trails, hiking trails, a duck pond, and a rose garden. Park needs that exceed the capacity of City and contract workers are included in this fund.

Fire Measure H (Fund 312): Sonoma County measure uses a ½ cent countywide sales tax to improve fire services.

Transportation Measure M (Fund 313): The Traffic Relief Act for Sonoma County (Measure M) provides for a ¼ cent sales tax that is apportioned to local jurisdictions to maintain their streets, as well as other County-wide street, highway, transit, and safe bicycle and pedestrian routes.

Parks-In-Lieu/Quimby Act (Fund 314): The 1975 Quimby Act (California Government Code §66477) authorized the City to pass ordinances requiring developers set aside land, donate conservation easements, or pay fees, which can only be used for new and rehabilitating existing parks and recreational facilities and cannot be used for the operation and maintenance of park facilities The City currently has a parkland dedication (exaction) requirement as a condition of approval for Tentative Subdivision Maps or Tentative Parcel Maps.

Parks Measure M (Fund 315): Sonoma County Parks Improvement, Water Quality and Fire Safety Measure (Measure M) is a one-eighth cent sales tax that supports Sonoma County’s regional and city parks Prop 68 Parks (Fund 316): Known as the California Clean Water and Safe Parks Act, Proposition 68 allocates funds to construct and rehabilitate parks, implement water improvements for safe drinking water, increase recycling and flood protection, and encourage climate change adaptation projects.

Successor Agency (Fund 391): The City of Sonoma has elected to serve as the Successor Agency to the Sonoma Redevelopment Agency, which was dissolved by the State through the Redevelopment Dissolution Act in 2012. The City as Successor Agency receives pass through revenue when property taxes are remitted to the City by the County via RPTTF (Redevelopment Property Tax Trust Fund). The City then makes authorized payments from Successor Agency for expenses, such as debt service costs, contract services for contracts issued before the dissolution of the development agency, and other expenses, including legal services.

CREBS (Clean Renewable Energy Bonds) (Fund 495): Bonds to pay for solar projects at the Police Station and Corporation Yard. Not Currently Active Fund
Agenda Item #7.2:

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City of Sonoma
2012 POB (Pension Obligation Bond) (Fund 498): Bond issued to refund the City’s side fund loan obligations to the California Public Employees’ Retirement System (CalPERS). Not Currently Active Fund Cemeteries (Fund 501): Accounts for funding to support the City’s three cemeteries’ operations and maintenance, including burial and inurnment preparation and coordination, cemetery improvements, tree hazard assessment and abatement, grounds maintenance, mausoleum maintenance, road maintenance, and vandalism abatement.

Cemetery Replacement (Fund 502): Not Currently Active Fund Cemetery Endowment (Fund 504): The Cemetery Endowment Fund was created to record the income received from Cemetery sales that is designated as endowment care. The City’s Municipal Code defines endowment care as the general maintenance of the City’s three cemeteries that is necessitated by natural growth and ordinary wear.

Water Utility (Fund 510): This enterprise fund is responsible for the delivery of high quality, dependable water service for a variety of needs including consumption, irrigation, and fire protection. It operates and maintains 3 active City-owned tanks with a combined storage capacity of 5.5 million gallons, 7 production wells and appurtenant treatment facilities, 2 pump stations with a combined 140 horsepower maximum output, 56 miles of active water main ranging from 8” to 14” in diameter, 513 fire hydrants, and approximately 4,500 active service connections
Water Construction in Progress (CIP) (Fund 512): This Capital Improvement Fund represents a transfer of funds from the Water Utility Fund to support improvements to the City's drinking water infrastructure.

Projects include replacing aging water mains and appurtenances (e.g. tees, crosses, couplers, saddles, valves), neighborhood-scale water service replacement projects, renewing tank coatings and corrosion control systems, replacing well or pump station equipment, replacing Supervisory Control and Data Acquisition (SCADA) systems and equipment, improvements to well and pump station buildings (e.g. replacing roofs or electrical systems).

Water Equipment Replacement (Fund 513): Accounts for costs to replace water equipment. Not Currently Active Fund
EMS Equipment Replacement (Fund 521): Accounts for costs to replace EMS equipment.

Management Information Services (Fund 601): The fund provides a mechanism for funding the operational costs, maintenance, and planned replacement of installed computer systems, equipment, software, telephone systems and other critical electronic office equipment through annual transfers from other City departments and funds.

Vehicle Replacement (Fund 603): Accounts for costs to replace vehicles based on a depreciation schedule.

Costs are distributed among user departments and transferred as approved in the annual budget process.

Insurance (Fund 604): Account from which liability, property, earthquake, vehicle, and other insurance premiums are paid. Funding is transferred from other City departments and funds on a pro rata share.

Not Currently Active Fund
Agenda Item #7.2:

Page 18 of 454 ends

City of Sonoma
Building Maintenance (Fund 610): The fund allows the City to set aside funding received through annual transfers made by other City departments and funds for future replacement or repair of certain items in City owned and maintained facilities.

Computer Loan (Fund 614): Created by the City Council in 2000 and funded by an initial transfer of $50,000 from the Employee Benefit Fund, this fund provides low interest loans to employees for the purchase of computers for both personal and professional use. Loans must be repaid through payroll deductions within two years.

Hardscape Maintenance (Fund 615): Accounts for the City's hardscape maintenance reserve programs.

Not Currently Active Fund
Administrative Hearings (Fund 620): Accounts for all activities of the City's Administrative Hearings as charged to departments. Not Currently Active Fund
Grants Restricted (Fund 630): The purpose of the fund is to separately track grant monies that are received and spent for capital improvement projects.

Culture Fine Art (Fund 701): Accounts for assets held to be used for cultural fine art programs. Not Currently Active Fund
Tree Trust (Fund 702): Accounts for assets held to be used for planting and replacement of trees. Not Currently Active Fund
Public Art (Fund 703): Accounts for assets held to be used for public art displays. Not Currently Active Fund
Pool Scholarship (Fund 715): In 2014, the City entered an agreement with Sonoma Valley Health and Recreation Association to support the construction of a swimming pool within the Sonoma Valley. The City’s financial commitment is for a total of $250,000 to be paid in 10 annual installments of $25,000 for the value of free and reduced-fee services to be provided to Sonoma Valley residents Senior Housing (Fund 731): Sonoma Creek Senior Housing is a thirty-four unit rental apartment complex for very low income senior citizens located on Oregon Street and administered by the Board of Directors of the Sonoma Community Housing Corporation (SCHC), a non-profit housing corporation created by the City’s Community Development Agency (CDA). The Board of the SCHC is comprised of two City Councilmembers, the City Manager, a staff member designated by the City Manager and a public member. The operation of the apartment complex is contracted out to Hank Fisher Properties, a rental management firm, with the resident managers being employed by the firm. All accounting and finance for the complex is handled through the rental management contract. Rental income is used to repay the indebtedness issued for the purchase of the complex and to cover annual maintenance and other operational costs. Not Currently Active Fund
Housing Trust (Fund 732): The fund accumulates and distributes funding in accordance with the City Council’s Affordable Housing Plan. The main source of funding is from General Fund transfers of one percent of the Transient Occupancy Tax.

Agenda Item #7.2:

Page 19 of 454 ends

City of Sonoma
IGT (Intergovernmental Transfer) (Fund 796): State of California program that provides an opportunity to receive federal matching funds to support health services for Medi-Cal Managed Care beneficiaries served by the Fire Department.

SVFRA (Sonoma Valley Fire Rescue Association) Operations (Fund 798): Accounts for operational activities in which revenues and expenses are split between the City and SVFD.

Agenda Item #7.2:

Page 20 of 454 ends

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Agenda Item #7.2:

Page 21 of 454 ends

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Page 22 of 454 ends

City of Sonoma
Agenda Item Summary
Meeting: City Council - 17 Jun 2026
Department
Administration
Staff Contact
Rebekah Barr, MMC, City Clerk
Agenda Item Title
Adopt Resolutions 1) Calling for the Holding of a General Municipal Election to be Held on Tuesday, November 3, 2026, for the Election of Certain Officers as Required by the Provisions of the Laws of the State of California Relating to General Law Cities; and 2) Requesting the Board of Supervisors of the County of Sonoma to Consolidate a General Municipal Election to be Held on Tuesday, November 3, 2026 with the Statewide General Election to be Held on Tuesday, November 3, 2026
Summary
The City’s General Municipal Elections are held in November of even-numbered years, concurrent with statewide elections. In 2025, the City transitioned from at-large elections to district-based elections, making the 2026 election the first in which candidates will be elected by district. Voters will elect three City Council Members to four-year terms representing Districts 1, 3, and 5, respectively. Only registered voters residing within a district will be eligible to vote for candidates seeking election to represent that district.

As provided in the California Elections Code, the attached resolutions are presented for adoption in preparation for the City's general municipal election. One resolution calls the election, and the other requests that the Sonoma County Board of Supervisors consolidate the election with the Statewide General Election. Upon adoption, certified copies of the resolutions will be forwarded to the County Board of Supervisors and the Sonoma County Registrar of Voters.

Pursuant to Elections Code Section 13307, on June 15, 2022, the City Council adopted Resolution No. 38-2022 regarding candidate statements. The resolution establishes a 200-word limit and requires candidates to pay all associated costs, including translation services.

Because the resolution has not been repealed, it will govern the 2026 General Municipal Election.

Required election notices have been or will be published in accordance with applicable deadlines. The nomination period for City Council candidates will begin on Monday, July 13, 2026, and close on Friday, August 7, 2026.

Because this is the first election conducted under the City's district-based election system for Districts 1, 3, and 5, no incumbent currently holds one of these district-specific offices.

Therefore, the nomination period will not be extended pursuant to Elections Code Section 10225.

Recommended Council Action
Adopt the resolutions.

Alternative Actions
Agenda Item #7.3:

Page 23 of 454 ends

N/A
Financial Impact
The City has a multi-year contract with the County to conduct our municipal elections. Funds have been included in the 2026/2027 budget for election expenses based on an estimate provided by the County in the amount of $50,000 for three district council seats.

Environmental Review Status
Environmental Impact Report
Negative Declaration
Exempt
Not Applicable
Approved/Certified
No Action Required
Action Requested
Attachments
2026 Resolution Calling General Municipal Election
2026 Resolution Requesting Consolidation
Agenda Item #7.3:

Page 24 of 454 ends

446728.3
City of Sonoma
RESOLUTION # _____ - 2026

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SONOMA,

CALIFORNIA, CALLING FOR THE HOLDING OF A MUNICIPAL ELECTION TO BE HELD ON TUESDAY, NOVEMBER 3, 2026, FOR THE ELECTION OF

CERTAIN OFFICERS AS REQUIRED BY THE PROVISIONS OF THE LAWS OF

THE STATE OF CALIFORNIA RELATING TO GENERAL LAW CITIES
WHEREAS, under the provisions of the laws relating to general law cities in the State of California, a General Municipal Election shall be held on November 3, 2026, for the election of Municipal Officers.

NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF SONOMA, CALIFORNIA, DOES RESOLVE, DECLARE, DETERMINE AND ORDER AS FOLLOWS:

SECTION 1. That pursuant to the requirements of the laws of the State of California relating to General Law Cities, there is called and ordered to be held in the City of Sonoma, California, on Tuesday, November 3, 2026, a General Municipal Election for the purpose of electing three Members of the City Council for the full term of four years, representing Districts 1, 3, and 5, respectively.

SECTION 2. That the ballots to be used at the election shall be in form and content as required by law.

SECTION 3. That the City Clerk is authorized, instructed and directed to coordinate with the County of Sonoma Registrar-Recorder/County Clerk to procure and furnish any and all official ballots, notices, printed matter and all supplies, equipment and paraphernalia that may be necessary in order to properly and lawfully conduct the election.

SECTION 4. That the polls (vote centers) for the election shall be open at seven o’clock a.m. of the day of the election and shall remain open continuously from that time until eight o’clock p.m. of the same day when the polls (vote centers) shall be closed, pursuant to Election Code § 10242, except as provided in §§ 4005 and 14401 of the Elections Code of the State of California.

SECTION 5. That in all particulars not recited in this resolution, the election shall be held and conducted as provided by law for holding municipal elections.

SECTION 6. That notice of the time and place of holding the election is given and the City Clerk is authorized, instructed and directed to give further or additional notice of the election, in time, form and manner as required by law.

SECTION 7. That of the rules and regulations governing Candidate Statements are governed by City of Sonoma Resolution #38-2022.

SECTION 8. That in the event two or more candidates receive an equal and highest number of votes for an office as certified by the County of Sonoma RegistrarAgenda Item #7.3:

Page 25 of 454 ends

446728.3
Recorder/County Clerk, the City Council shall set a date and time and place and summon the candidates who have received the tie votes to appear and will determine the resolution of the tie by lot, pursuant to Elections Code section 15651.

SECTION 9. That the City Clerk shall certify to the passage and adoption of this Resolution and enter it into the book of original Resolutions.

SECTION 10. The City Council authorizes the City Clerk to administer said election and all reasonable and actual election expenses shall be paid by the City upon presentation of a properly submitted bill.

PASSED, APPROVED AND ADOPTED at a Regular Council Meeting on June 17, 2026, by the following vote:

AYES:

NOES
ABSENT:

ABSTAIN:

________________________________
Ron Wellander, Mayor
ATTEST:
____________________________
Rebekah Barr, MMC, City Clerk
Agenda Item #7.3:

Page 26 of 454 ends

446731.2
City of Sonoma
RESOLUTION # _______ - 2026

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SONOMA, CALIFORNIA,

REQUESTING THE BOARD OF SUPERVISORS OF THE COUNTY OF SONOMA TO CONSOLIDATE A GENERAL MUNICIPAL ELECTION TO BE HELD ON NOVEMBER 3, 2026,

WITH THE STATEWIDE GENERAL ELECTION TO BE HELD ON THE DATE PURSUANT TO SECTION 10403 OF THE ELECTIONS CODE
WHEREAS, the City Council of the City of Sonoma called a General Municipal Election to be held on November 3, 2026, for the purpose of the election of three Members of the City Council, representing Districts 1, 3, and 5, respectively; and
WHEREAS, it is desirable that the General municipal election be consolidated with the Statewide General election to be held on the same date and that within the city the precincts, polling places (vote centers) and election officers of the two elections be the same, and that the county election department of the County of Sonoma canvass the returns of the General Municipal Election and that the election be held in all respects as if there were only one election.

NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF SONOMA DOES RESOLVE, DECLARE, DETERMINE AND ORDER AS FOLLOWS:

SECTION 1. That pursuant to the requirements of section 10403 of the Elections Code, the Board of Supervisors of the County of Sonoma is hereby requested to consent and agree to the consolidation of a General Municipal Election with the Statewide General election on Tuesday, November 3, 2026, for the purpose of the election of Three Members of the City Council, representing Districts 1, 3, and 5, respectively.

SECTION 2. That the county election department is authorized to canvass the returns of the General Municipal Election. The election shall be held in all respects as if there were only one election, and only one form of ballot shall be used. The election will be held and conducted iin the manner prescribed in Elections Code § 10418.

SECTION 3. That the Board of Supervisors is requested to issue instructions to the county election department to take any and all steps necessary for the holding of the consolidated election.

SECTION 4. That the City of Sonoma recognizes that additional costs will be incurred by the County by reason of this consolidation and agrees to reimburse the County for any costs actually incurred upon presentation of a properly submitted bill to the City pursuant to Elections Code section 10002.

SECTION 5. That the City Clerk is hereby directed to file a certified copy of this resolution with the Board of Supervisors and the county election department of the County of Sonoma.

SECTION 6. That the City Clerk shall certify to the passage and adoption of this resolution and Agenda Item #7.3:

Page 27 of 454 ends

446731.2
enter it into the book of original resolutions.

PASSED, APPROVED, AND ADOPTED, at a Regular Council Meeting of the City Council of the City of Sonoma on this 17th day June of 2026, by the following vote:

AYES:

NOES
ABSENT:

ABSTAIN:

____________________________________
Ron Wellander, Mayor
ATTEST:
_______________________________________
Rebekah Barr, MMC, City Clerk
Agenda Item #7.3:

Page 28 of 454 ends

City of Sonoma
Agenda Item Summary
Meeting: City Council - 17 Jun 2026
Department
Public Works
Staff Contact
Ashley Cotter, PW Admin & Project Manager
Agenda Item Title
Adopt a Resolution Authorizing the Interim City Manager to Execute a Quit Claim Deed for APN(s): 018-391-019, 018-391-018 - (871 and 879 Hayes Street) to the Sonoma Valley County Sanitation District
Summary
The Sonoma Valley County Sanitation District was formed in 1977 to collect and treat wastewater in the City and the Valley. Management of the wastewater system was transferred to Sonoma County Water Agency (SCWA) in 1995. Before that, the City of Sonoma owned, operated, and maintained its sewer system. During this transition period, all the City's sewer easements should have transferred to Sonoma County Water Agency; however, there were a few that did not by omission.

SCWA alerted City staff that urgent sewer repairs were needed to a sewer main, which falls into the easement that the City owns across APN(s) 018-391-019 and 018-391-019 (871 and 879 Hayes).To align this easement with all sewer easements, and to provide ease of access for current repairs to the sewer main, it is recommended that the City file a quit claim deed to this easement, transferring it to Sonoma Valley County Sanitation District.

Attached is a survey showing the easement that runs along the back of 871 and 879 Hayes Street, as well as the original sewer easement to the City of Sonoma.

Recommended Council Action
Adopt a Resolution Authorizing the Interim City Manager to Execute a Quit Claim Deed for APN(s): 018-391-019, 018-391-018 - (871 and 879 Hayes Street) to the Sonoma Valley County Sanitation District.

Alternative Actions
Council discretion.

Financial Impact
There are no financial implications.

Environmental Review Status
Environmental Impact Report
Negative Declaration
Exempt
Not Applicable
Approved/Certified
No Action Required
Action Requested
Agenda Item #7.4:

Page 29 of 454 ends

Attachments
Resolution
Quitclaim
Hayes St. SS Easement Exhibit
Original Sewer Easement
Agenda Item #7.4:

Page 30 of 454 ends

City of Sonoma
RESOLUTION # ________- 2026

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SONOMA AUTHORIZING THE

INTERIM CITY MANAGER TO EXECUTE A QUIT CLAIM DEED FOR PERMANENT SEWER EASEMENTS FOR APNS 018-391-018 AND 018-391-019 TO THE SONOMA VALLEY COUNTY

SANITATION DISTRICT
WHEREAS, Sonoma Valley County Sanitation District (SVCSD) has owned the sewer system within the City of Sonoma since at least 1977; and
WHEREAS, Sonoma County Water Agency (SCWA) has managed SVCSD’s wastewater system since 1995; and
WHEREAS, during the transition of sewer services from the City of Sonoma to Sonoma Valley County Sanitation District, all easements were meant to be transferred to SVCSD; and WHEREAS, SVCSD discovered that the easements at 871 and 897 Hayes Street (APNs 018-391- 018 and 018-391-019 respectively) were still held by the City of Sonoma; and WHEREAS, to align this easement with all other sewer easements, and to allow SCWA to perform required maintenance and repairs in a timely manner, these easements should be transferred to SVCSD via a quit claim deed.

NOW, THEREFORE, BE IT RESOLVED, the Interim City Manager is authorized to execute a quit claim deed for APNs 018-391-018 and 018-391-019 to Sonoma Valley County Sanitation District.

PASSED, RESOLVED, AND ADOPTED, at a Regular meeting of the City Council of the City of Sonoma on this 17th day of June 2026, by the following vote:

AYES:

NOES:

ABSENT:

ABSTAIN:
____________________________
Ron Wellander, Mayor
ATTEST:
____________________________
Rebekah Barr, MMC, City Clerk
Agenda Item #7.4:

Page 31 of 454 ends

RECORDING REQUESTED BY AND
WHEN RECORDED RETURN TO:

Sonoma County Water Agency
Right-Of-Way Services
404 Aviation Blvd
Santa Rosa, CA 95403
-
Executed or recorded by Public Agency Exempt from fees per GC 27383 & 27388.1 (2)(D) Portions of APN(s): 018-391-019, 018-391-018 Deed from Public Agency, R&T 11911

QUITCLAIM DEED
For good and valuable consideration, receipt and sufficiency of which is hereby acknowledged, City of Sonoma, does hereby quitclaim unto Sonoma Valley County Sanitation District, all right, title and interest in and to that real property situated in the County of Sonoma, State of California, described as follows:

That certain Deed - Easement recorded on September 14, 1954, under Document Book 1295, beginning at Page 176, Official Records of the County of Sonoma County.

IN WITNESS WHEREOF, City of Sonoma has executed this instrument on this ______ day of _____________________, 2026.

City of Sonoma
By:

Cristine Alilovich
Interim City Manager
Agenda Item #7.4:

Page 32 of 454 ends

CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT
State of California )
County of ___________________ )
On ________________ before me, _________________________________________________, Date Here Insert Name and Title of the Officer
personally appeared _____________________________________________________________ Name(s) of Signer(s)
_____________________________________________________________________________, who proved to me on the basis of satisfactory
evidence to be the person(s) whose name(s) is/are
subscribed to the within instrument and
acknowledged to me that he/she/they executed the
same in his/her/their authorized capacity(ies), and
that by his/her/their signature(s) on the instrument
the person(s), or the entity upon behalf of which the
person(s) acted, executed the instrument.

I certify under PENALTY OF PERJURY under the laws
of the State of California that the foregoing
paragraph is true and correct.

WITNESS my hand and official seal.

Signature __________________________________
Place Notary Seal Above Signature of Notary Public
______________________________________________________________________________ A notary public or other officer completing this certificate verifies only the identity of the individual who signed the document to which this certificate is attached, and not the truthfulness, accuracy, or validity of that document.

Agenda Item #7.4:

Page 33 of 454 ends

************************************************************************

CERTIFICATE OF

ACCEPTANCE
This is to certify that the interest in real property conveyed by a Quitclaim Deed dated , 2026, from City of Sonoma to the Sonoma Valley County Sanitation District, and the terms specified therein are hereby accepted pursuant to authority by Resolution 94-1730 of the Board of Directors of the Sonoma Valley County Sanitation District on December 6, 1994.

Sonoma County Water Agency
Dated: _______________ _____________________________
Grant Davis General Manager
************************************************************************ Agenda Item #7.4:

Page 34 of 454 ends

I certify under PENALTY OF PERJURY under the laws
of the State of California that the foregoing
paragraph is true and correct.

WITNESS my hand and official seal.

Agenda Item #7.4:

Page 35 of 454 ends

5TH STREET WEST

MAC ARTHUR STREET HAYES STREET
CO
SS

SEBASTIANI

SUBDIVISION
59 MAPS 21
133 134 135
131
132
130
129
128
127 126
125 124
123 122
T:\Land Projects\2026 Projects\_SANITATION\V0005D009 SVCSD 871 & 879 Hayes St Sewer Easement\02-CAD_Dwg\Hayes St.SS Exhibit.dwg Agenda Item #7.4:

Page 36 of 454 ends

i,
. E
41111315 saggi?
HESOLUTION’OF ACCEPTANCENo.52gZ?L(l954)
, ”*-
WHEREAS, the acquisition of a right of way for a sewer
and desirable, and a grant of right of way has been tendered by { the owners thereof,
NOW, THEREFORE,BE IT RESOLVED:
/
A That said CITY OF SONOMA accept the grant of right of way i
i
‘
main which will follow a route hereinafter described,.is necessary '
I
g
‘
by August Sebastiani and Sylvia Sebastiani, his wife, and George 1 W. Strawther and Wilma K. Strawther, his wife, which.right of Way is described as follows:

That certain strip of land of the uniform width of five feet of the tract described as follows:

A'strip of land of the uniform width of five (5) feet, lying two and one-half (2%) feet on each side of the center line thereof described as follows:

Being the division line between lots 114and 115, and a portion of the division line between lots 118 and 117, all as shown, designated and delineated upon that certain map entitled "Sebastiani Subdivision, City of Sonoma, Sonoma County, California," and recorded in the office of the County Recorder of Sonoma County, California, on the 12th day of May, 1948, in BookaQ of Maps, at pages 21, 22, and 23, and more particularly, that line beginning at a point on the southerly line of Bettencourt Street where said Southerly line is intersected by the said division line between the said lots 11h.and115; thence from said point, and along said division line, 8. 79 02' W., a distance of ninety three (93) feet to a point on said division line which is the point of beginning of the easement directly hereinafter described.

Also, and as part of, and as a continuation of the above easement, and for the same purposes:
five (5) feet on each side of the center line thereof described, as follows:

Being a continuation of the line above described, and CQm-' mencing at the point which is the termination point of the 1 . five (5) foot easement above granted; thence following the division said line between said lots 116 and 117, 5. 7° 02' w. along said division7line, which is also the division line between lots 118 and 119, 120 and 121, 122 and 123, 124and 125, 126 all
and 127, 128 and 129, 128 and 130, 130 and 132 and 131 and 132 in.said’Sebastiani Subdivision, a distance of five hundned fifty eight ( 58) feet to a point on the northerly line of and common to lots 133, 13hand 135; thence at right angles from LAW D FFICEI OF" A.R.GmNSTEAD 1'
7 SONDMA, CALIF. TELEPHGN: 2694
Agenda Item #7.4:

Page 37 of 454 ends

LAw urnccs OF A. R. GRINSTEAD
SONDMA, CALIF. TELEPHDNE 2694
W 3*:-$9.339: VIM?13:"2:?
a
said
westerly
point,
direction
and to either side, and more particularly in
line common to
N. 82° 16' W. along the said northerly
in.an easterly
lots 133 and 134, a distance of 75 feet, and
boundary direction, 6. 82° 16' E. along the northerly
feet.
common to lots 134and 135, a distance of fifty (SO)‘
The foregoing Resolution as above written was adopted by {I roll call as follows:

AYES: Councilmen
NOES:.Geuaeilmen
I hereby approve the foregoing RESOLUTIONNO. jggiéa this/éaézday of September, 1954.
\ I I hereby certify that this is a true and correct copy of Resolution

7.J0-;§§£LEZ_9duly and regularly pasSed by the City Council at‘a ?k?pq?c: meeting thereof.

Agenda Item #7.4:

Page 38 of 454 ends

THIS momentmade the (aZday of September, One
Thousand Nine Hundredand Fifty Four,
BETWEEN- AUGCSTVSEBASTIANI and SYLVIA'SEBASTIANI, his wife, and GEORGE W; STRAWTHERand WILNA K. STRAHTHER,his wife, the parties of the first part, and the CITY OF SQNGKA, a municipal corporation of the sixth class, thegparty of the second part, W I T N E S S E T H:

That the said parties of the first part, in consideration of the services to be rendered by the said party of the second part and for other good and valuable consideration, do by these presents grant, bargain, and sell to the said party of the second) part, and to its Successors and assigns forever, a perpetual ease:
ment with a right of immediate entry and continued possession for, the construction, improvement, maintenance and repair of a sewer line or sewer lines in and over that certain strip of real property lying and being in the City of Sonoma, County of Sonoma, State of California, and more particularly describedas follows, to wit:

A strip of land of the uniform width pf five (5) feet,
lying two and one-half (25) feet on each side of the
center line thereof described as follows:

Being the division 1ine between lots 114 and 115, and i a portion of the division line between lots 116 and 117, 1 all as shown, designated and delineated upon that certain 3 map entitled "Sebastiani Subdivision, City of Sonoma,
Sonoma County, California, " and recordedin the office
of the County Recorder of Sonoma County, California,
on the 12th Aday of May, l9k8, in Book 59 of Maps, at
pages 21, 22, and 23, and more particularly, that 1ine beginning at a point on the southerly line of Bettencourt Street where said Southerly line is intersected by the 1 said division line between the said lots 11h and 115; l thencefrom said point, and along said division line,

5. 7° 02 w._, a distanée of ninety three (93) reetftoa
point on said division line which is the point of beginning of the easement directly hereinafter described.

Also, and as part of, and as a continuation of the g
I
Page One
Agenda Item #7.4:

Page 39 of 454 ends

A; ,3
.
5” H
=2 79:22“.
{3:3 ”if?4%m3., -
.
, y—.a-1 :¢v sir-—:-:z——j—» r
-,- .
above easement, and for the same purposes:

A strip of land of the uniform width of ten (10) feet; lying five (5) feet on each side of the center line thereof described as follows:

Being a continuation of
I
the line above described, and_ commencinf at the five 5 foot the
easement
point-which is the termination point of—
ing the said division line
above granted; thence followbetween said lots 116 and 117, 8. 7° 02' w. along said division line, which is also the < division line between lots and 123, 124 and 125, 126 and 127, 128 and 129, 128 and 130, 130 and 132 and 131 and 132 all in said Sebastiani Subdivision, a distance of feet to a point on the nort
133, 134 and 135; thence at
and to either side, and mor
direction, Nr 82° 16' W. a1
cemmonto lots 133 and 134, in an easterly direction, S
baundary common to lots 13a (50) feet.
118 and 119, 120 and 121, 122.
five hundred fifty eight (558) herly line of and common to lets“~ right angles from said point,. e particularly in a westerly ‘ ong the said northerly line a distance of 75 feet, and ' . 82° 16"E. along the northerly and 135, a distaPceof fifty
IN WITNESS WHEREOFthe said parties of the first part have executed these presents the day and year first above written. as s w .“t
{ o‘i: s,» 3,3,. ._._.-
z
,_
‘ .1 u.) \,,-’.R~,’
1 .V. V551U h 521; h 4', v‘tLM‘kRN?\
SE3.P1.411954
+ a, 1??

STATE OF CALIFORNIA )
S,ss.

County of Sonoma » On this ?zzzz/day of September, 1954, before me, ROLAND H. KRUGER, a o ary Public in and State, personally appeared AUGUST
for the said County-and
SEBASTIANI and SYLVIA SEBASTIANI, his wife and GEORGE w. STRAWTHERand WILMAIK., STRAWTHER,his wife, known to me to be the persons whosenames 4 are subscribed to the within instrument and they acknowledged to me that they executed the same.
my
IN WITNESSwasnsor, I have hereunf6dse?\ y hand and affixed official seed the day and year/in this 3’ tificate first above written. ‘1‘ Page Two.

Agenda Item #7.4:

Page 40 of 454 ends

City of Sonoma
Agenda Item Summary
Meeting: City Council - 17 Jun 2026
Department
Community Development
Department
Staff Contact
Jennifer Gates, AICP, Community Development
Director
Agenda Item Title
Adopt a Resolution Authorizing the City Manager to Execute a Fourth Amendment to the Professional Services Agreement with 4LEAF, Inc. to Extend Services for Building Official Services
Summary
On December 20, 2023, the City Council approved a Resolution authorizing the City Manager to execute a Professional Services Agreement with 4LEAF, Inc. to provide as needed building official, building permit plan check and inspection services in the amount not to exceed $100,000 through June 30, 2024. The contract has been amended annually, with the most recent being in June 2025, to extend the services through June 30, 2026 with an additional budget of $100,000, for a total not to exceed budget of $375,000. Given recent staffing changes and changes to state law, staff proposes at this time to extend the contract for one year, through June 30, 2027, with an additional budget of $100,000, but only for building official services required under state law. Staff will return to Council at a later date to include plan check and inspection services within the scope of work for this contract.

Effective 2026, AB 339 requires public employers to provide an employee organization (union) with at least 45 days’ written notice before issuing an RFP or RFQ, or before renewing or extending an existing service contract if the work is within the scope of a job classification(s) represented by the union. On June 3, staff provided the 45-day notice for the extension of the existing service contract with 4Leaf for plan check services, as plan check services are within the scope of represented job classifications. The 45-day notice period will close mid-July. After that time, staff will bring an amendment to this contract to include as needed plan check and building inspection services. The city also has existing contracts with BPR and Shums Coda to provide these services in the interim.

In June 2026, the Building Official vacated their position, which is being filled in the interim by 4Leaf under the existing contract. The Building Official position is not governed by AB 339. To ensure continuity in this position and avoiding waiting until the AB 339 notice has concluded in mid-July, staff seeks to amend the 4Leaf contract for building official services for one year, with additional budget of $100,000.

This contract amendment will not change the cost of building permits for residents. Building plan check and inspection services are primarily covered by building permit fees. Any difference between City fees and consultant costs are covered by salary savings.

Recommended Council Action
Approve City Council Resolution authorizing the City Manager, in consultation with the City Attorney, to execute a Fourth Amendment to Professional Services Agreement with 4LEAF, Inc. to provide building official services in the amount not to exceed $475,000 through June Agenda Item #7.5:

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30, 2027.

Alternative Actions
Council discretion.

Financial Impact
The Agreement costs will be provided by permit fees and salary savings.

Environmental Review Status
Environmental Impact Report
Negative Declaration
Exempt
Not Applicable
Approved/Certified
No Action Required
Action Requested
Attachments
6-17-26 Reso - 4LEAF PSA 4th Amendment
4LEAF PSA 4th Amendment
Alignment with Council Goals:

Not Applicable
Agenda Item #7.5:

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CITY OF SONOMA

CITY COUNCIL
RESOLUTION # _______ - 2026

RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SONOMA AUTHORIZING

THE CITY MANAGER TO EXECUTE A FOURTH AMENDMENT TO THE
PROFESSIONAL SERVICES AGREEMENT WITH 4LEAF, INC. TO PROVIDE AS NEEDED BUILDING OFFICIAL SERVICES THROUGH JUNE 30, 2027.

WHEREAS, the City of Sonoma (“the City”) requires a qualified Building Official to serve as the City’s Interim Building Official while an active recruitment is occurring; and WHEREAS, the City circulated a Request for Proposals and Qualifications for Interim Building Official and On-call Building Division Consulting Services from September 25, 2023 to October 20, 2023 and received six responses for the Interim Building Official position; and WHEREAS, the City Council approved a Professional Services Agreement with 4LEAF on December 20, 2023 in the amount not to exceed $100,000 through June 30, 2024; and WHEREAS, the City Council approved an amendment to the Professional Services Agreement with 4LEAF on March 20, 2024 in the amount not to exceed $175,000 through June 30, 2024; and
WHEREAS, the City Council approved an amendment to the Professional Services Agreement with 4LEAF on June 19, 2024 in the amount not to exceed $275,000 through June 30, 2025; and
WHEREAS, the City Council approved an amendment to the Professional Services Agreement with 4LEAF on June 4, 2025 in the amount not to exceed $375,000 through June 30, 2026; and
WHEREAS, the City desires to continue the services provided by 4LEAF, therefore requiring a fourth amendment to the scope, compensation, and term of the Professional Services Agreement.

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NOW, THEREFORE, BE IT RESOLVED that the City Council hereby authorizes the City Manager to execute a fourth amendment to the Professional Services Agreement with 4LEAF, Inc. to provide building official services in the amount not to exceed $475,000 through June 30, 2027.

RESOLVED AND ADOPTED this ___________________, 2026 by the following vote:

AYES:

NOES:

ABSENT:

ABSTAIN:
_________________________________
Ron Wellander, Mayor
ATTEST:
_________________________________
Rebekah Barr, MMC, City Clerk
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CITY OF SONOMA

FOURTH AMENDMENT TO PROFESSIONAL SERVICES AGREEMENT
CITY OF SONOMA & 4LEAF, INC.

THIS FOURTH AMENDMENT TO THE AGREEMENT is entered into as of the 1st day of July, 2026, by and between the CITY OF SONOMA herein called the “City,” and 4LEAF, INC, herein called the “Consultant.”
Recitals
WHEREAS, the Parties entered into an Agreement for Building Services dated January 3, 2024 for a not-to-exceed Agreement amount of $100,000 (“Agreement”); and WHEREAS, the Parties amended the Agreement on March 20, 2024 to increase the not-to-exceed Agreement amount to $175,000; and
WHEREAS, the Parties amended the Agreement a second time on June 19, 2024 to increase the not-to-exceed Agreement amount to $275,000 and to provide services through June 30, 2025; and
WHEREAS, the Parties amended the Agreement a third time on June 4, 2025 to increase the not-to-exceed Agreement amount to $375,000 and to extend the term of the Agreement for services through June 30, 2026; and
WHEREAS, the Parties now desire to amend the Agreement to amend the scope of services to continue the building official services, to provide an additional $100,000 based on 4Leaf’s updated fee schedule for a not-to-exceed amount of $475,000, and to extend the term of the Agreement for services through June 30, 2027.

Agreement
NOW, THEREFORE, in consideration of these recitals and the mutual covenants contained herein, the City and Consultant agree to amend Sections 1, 2, 4(A), and Exhibit A as follows:

1. Scope of Services. Subject to such policy direction and approvals as the City through its staff may determine from time to time, Consultant shall perform the services set out in Exhibit “A,” which is attached hereto and incorporated herein by reference.

2. Time of Performance. The services of Consultant are to commence upon receipt of a written notice to proceed from City, but in no event prior to receiving a fully executed agreement from City and obtaining and delivering the required insurance coverage, and satisfactory evidence thereof, to City. Consultant shall begin performance of its services not later than January 9, 2023 and complete its services not later than June 30, 2027.

Agenda Item #7.5:

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Any changes to these dates must be approved in writing by the City Manager or his or her representatives.

4. Compensation and Method of Payment.

A. Compensation. The compensation to be paid to Consultant, including both payment for professional services and reimbursable expenses, shall be at the rate and schedules more particularly described in Exhibit A, in accordance with the terms and conditions included therein. However, in no event shall the amount City pays to Consultant exceed Four Hundred Seventy-Five Thousand Dollars ($475,000).

City’s obligation to pay compensation to Consultant as provided herein is contingent upon Consultant’s compliance with the terms and conditions of this Agreement and f waiver of defects, even if such defects were known to the City at the time of payment.

Except as modified herein, all other provisions of the Agreement and prior amendments shall remain unchanged and in full force and effect.

TO EFFECTUATE THIS AGREEMENT, the parties have caused their duly authorized representatives to execute this Agreement on the dates set forth below. “City”
City of Sonoma
By:
______________________________
[Name, Title]
Date: _______________
Attest:

By:
______________________________
Rebekah Barr, City Clerk
Date: _______________
Approved as to form:
“Consultant”
[Name of Company or Individual]
By:______________________________
[Name, Title]
Date: __________________
By:______________________________
[Name, Title]
Date: __________________
Agenda Item #7.5:

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By:
______________________________
David J. Ruderman, City Attorney
Date: _______________
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EXHIBIT A

SCOPE OF SERVICES
Consultant has 1 key task:

1. Provide Interim Building Official approximately 2-3 days per week. Building Official will also conduct plan review and inspections as-needed as part of his/her Building Official duties.

Services

1. Provide Interim Building Official Services
• 4LEAF will provide a qualified and certified (through ICC) Building Official to work on-site at the City offices.
• 4LEAF will work with the City to identify a schedule to be mutually agreed upon to best serve the community and preserve budget.

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Fee Schedule July 1, 2026

FEE SCHEDULE
FY2026-2027 FEE SCHEDULE & BASIS OF CHARGES

FOR THE CITY OF SONOMA
All Rates are Subject to Basis of Charges

PLAN REVIEW COST STRUCTURE NOTES
Plan Review Percentage: 70%
(Inclusive of all disciplines except Fire and Civil which are billed on an hourly basis)
Hourly Plan Review: $148 Non-Structural Review
$168 Structural Review
Fee includes:
 Initial review and two (2) rechecks. Hourly
charges apply after three (3) or more
rechecks.
 Shipping, courier, and electronic service.

Building
Chief Building Official ......................................................................................................................... $163/hour Structural Plan Review Engineer ........................................................................................................ $168/hour Non-Structural Plans Examiner .......................................................................................................... $148/hour Certified Access Specialist (CASp) Inspector ...................................................................................... $174/hour Certified Access Specialist (CASp) Plans Examiner............................................................................. $174/hour Senior Combination Building Inspector (Building Inspector III) ......................................................... $127/hour Commercial Building Inspector (Building Inspector II) ...................................................................... $112/hour Residential Building Inspector (Building Inspector I).......................................................................... $101/hour Permit Manager.................................................................................................................................. $101/hour Senior Permit Technician.................................................................................................................... $86/hour Permit Technician............................................................................................................................... $76/hour Clerk/Administrator............................................................................................................................ $65/hour Civil Plan Review (Grading, Improvement Plans) ............................................................................... $184/hour Inspector of Record ............................................................................................................................ $143/hour DSA Class 1 / OSHPD A Inspector ....................................................................................................... $184/hour DSA Class 2 / OSHPD B Inspector ....................................................................................................... $153/hour DSA Class 3 / OSHPD C Inspector........................................................................................................ $110/hour GoFormz Software.................................................................................................................. $50/user monthly Code Enforcement
Code Enforcement Director.............................................................................................................. $153/hour Code Enforcement Manager ............................................................................................................ $143/hour Senior Code Enforcement Officer..................................................................................................... $112/hour Code Enforcement Officer II............................................................................................................. $101/hour Code Enforcement Officer I.............................................................................................................. $91/hour Agenda Item #7.5:

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Fee Schedule July 1, 2026
Fire
Fire Protection Engineer (FPE)............................................................................................................$215/hour Fire Prevention Officer ......................................................................................................................$148/hour Fire Plans Examiner ............................................................................................................................$153/hour Fire Inspector II...................................................................................................................................$179/hour Fire Inspector I....................................................................................................................................$168/hour Planning
Housing Policy Director ....................................................................................................................$215/hour Planning Director..............................................................................................................................$189/hour Principal/Planning Manager.............................................................................................................$174/hour Senior Planner ..................................................................................................................................$148/hour Associate Planner.............................................................................................................................$132/hour Assistant Planner .............................................................................................................................$112/hour Planning Technician..........................................................................................................................$96/hour Project Management
Project Manager.................................................................................................................................$189/hour Principal-in-Charge .............................................................................................................................$256/hour Engineering, Public Works Inspection, & Construction Management (Prevailing Wage) Civil Plan Review (Grading, Improvement Plans) ................................................................................ $184/hour Traffic Engineer.................................................................................................................................... $241/hour Construction Manager…………………………………………………………………………………………….……………….……. $170/hour Certified Access Specialist (CASp) Inspector (Regular time) …………………………………………………….…….. $174/hour Certified Access Specialist (CASp) Inspector (Nighttime) ……………………………………………………….…….… $195/hour Certified Access Specialist (CASp) Inspector (Overtime)…………………………………………………………….…… $233/hour Certified Access Specialist (CASp) Plans Examiner…………………………………………………………….……..…….. $174/hour Public Works Inspector (Regular Time) ……………………………………………………………………………………..…… $161/hour Public Works Inspector (Nighttime)…………………………………………………………………………………………..…….$181/hour Public Works Inspector (Overtime) …………………………………………………………………….……………..………..…$217/hour Public Works Inspector Apprentice………………………………………………………………………………...……………… $106/hour

BASIS OF CHARGES
• Rates are inclusive of “tools of the trade” such as forms, telephones, and consumables, basic PPE (project specific PPE and technology equipment will be charged at cost plus 20%). • All invoices will be submitted monthly.
• All invoices will be charged a 3% administrative fee. • Approved expenses such as flights/ferry/hotels/etc. as well as subconsultants will be charged at cost plus 20%
• Staff Augmentation work (excluding plan review) is subject to 4-hour minimum charges unless stated otherwise. Services billed in 4-hour increments.

Agenda Item #7.5:

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Fee Schedule July 1, 2026
• Inspection services canceled less than 24 hours of requested time of service will be subject to a two (2) hour minimum charge. Same day services (after midnight) 1.5x service premium. • Expedited reviews will be billed at 1.5x the plan review fee listed in the fee schedule. Return time will be within seven (7) days of receipt of the plans from the Jurisdiction. • Most plan reviews will be reviewed in 10 business days or less and 5 business days or less for re-checks.

This is not inclusive of holidays or the day of the pick-up of plans. • Plan review of deferred submittals & revisions will be billed at the hourly rates listed. • All plan review services are billed on a percentage basis and includes the initial review and 2 rechecks. • Plan reviews will be billed on an hourly basis only after the initial review and 2 rechecks unless otherwise agreed upon on a case-by-case basis.
• Fire and Civil Reviews are billed on an hourly basis and are not included in our plan review percentage. • 4LEAF assumes that these rates reflect the FY2026-2027 contract period. There will be a 5% escalation for FY2027-2028, FY2028-2029, etc.
• Overtime and Premium time will be charged as follows:
- Regular time (work begun after 5AM or before 4PM) 1 x hourly rate - Nighttime (work begun after 4PM or before 5AM) 1.125 x hourly rate - Overtime (over 8-hour M-F or Saturdays) 1.5 x hourly rate - Overtime (over 8 hours Sat or 1st 8-hour Sun) 2 x hourly rate - Overtime (over 8 hours Sun or Holidays) 3 x hourly rate • Overtime will only be billed with prior authorization of the client unless required by governing documents.
• All work with less than 8 hours rest between shifts will be charged the appropriate overtime rate. • Mileage driven during the course of project work or assignment will be charged at cost plus 20%. • Payment due on receipt. All payments over 30 days will be assessed a 1.5% interest charge. • Client shall pay attorneys’ fees, or other costs incurred in collecting delinquent amounts. • Client agrees that 4LEAF’s liability will be limited to the value ofservices provided. • In accordance with California’s Meal Break and Rest Break Law requirements, Client will be billed one (1) additional hour per day at the regular rate for each missed meal or rest break due to Clientdirected tasks or requirements. Client will allow 4LEAF staff the opportunity to take their entitled rest and meal breaks during each work shift as required by law.

BASIS OF CHARGES – PREVAILING WAGE • Rates shown assume projects do not require compliance with California Prevailing Wage requirements unless proposed as prevailing wage. The Client must notify 4LEAF in writing if it has or will be registering a project with the California Department of Industrial Relations (“DIR”) and shall provide 4LEAF with a copy of the Form PWC-100.
• Rates for prevailing wage categories are subject to annual escalations in accordance with the bi-annual wage determinations from the California DIR at cost, plus multiplier, and profit. • Per the new requirements being enforced under SB 854 and because it is assumed that a PWC-100 Form will be filed by the Client to the CA DIR for each project, 4LEAF is required to notify an authorized Apprenticeship Committee through submittal of a DAS-140 form. We are then required to make an official request to an authorized Apprenticeship Committee for an apprentice by submitting a DAS-142 Agenda Item #7.5:

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Fee Schedule July 1, 2026
form. We are not assured the apprenticeship committee will be able to provide a suitable / qualified apprentice for the project. Per the apprenticeship requirements, the hours worked by the apprentice must be in a ratio of 1:5 for apprentice to journeyman hours. 4LEAF will not know the labor classification of the Public Works Apprentice until an Apprentice is dispatched to the site; therefore, the rates for the five Periods listed under the California DIR’s Wage determination for Building Construction Inspector.

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City of Sonoma
Agenda Item Summary
Meeting: City Council - 17 Jun 2026
Department
Public Works
Staff Contact
Ashley Cotter, PW Admin & Project Manager
Agenda Item Title
Adopt a Resolution Approving the Fiscal Year 2026-27 Road Pavement Preservation and Rehabilitation Projects as the Projects for Fiscal Year 2026-27 Funded by Senate Bill 1: The Road Repair and Accountability Act of 2017 and Authorize the Public Works Department to Submit these Projects to the California Transportation Commission Summary
Senate Bill 1 (SB 1), the Road Repair and Accountability Act of 2017, was passed by the Legislature and signed into law by the Governor in April 2017 to address the significant multimodal transportation funding shortfalls statewide. SB 1 increased gasoline/diesel taxes and vehicle registration fees to address basic road maintenance and rehabilitation needs on both state highways and local roads. SB 1 includes accountability and transparency provisions that will ensure the residents of the City of Sonoma are aware of the projects proposed for funding in our community and which projects have been completed each fiscal year.

In March 2021 the California Transportation Commission (CTC) adopted the 2021 Local Streets and Roads Funding Program Reporting Guidelines. The Reporting Guidelines require that pursuant to Streets and Highway Code (SHC) Section 2034 (a)(1), prior to receiving an apportionment of Road Maintenance and Rehabilitation Account (RMRA) funds from the State Controller each fiscal year, local agencies must provide the CTC a list of projects proposed to be funded using RMRA funds pursuant to an adopted resolution of the local agency governing body by July 1st of each year. The resolution must include a description (including locations) of each proposed project, a proposed schedule for the project’s completion, and the estimated useful life of the improvements. The adopted resolution is required by the State for the City of Sonoma to utilize the apportionment of SB1 RMRA funding each fiscal year and is also required to remain in good standing to continue receiving SB1 Funding.

In addition, pursuant to SHC Section 2034(b), the City must submit documentation to the CTC detailing the expenditure of those funds for each fiscal year in which an apportionment of RMRA funds is received and upon expenditure of funds. The documentation must include a description and location of each completed project, the amount of RMRA funds expended on the project, the project completion date, and provide an opportunity for the City to report on the progress and expenditures associated with multi-year projects that are not yet complete. The expenditure report submittal is due by October 1st each year. The expenditure report can differ from the project list submittal mentioned above.

Proposed Fiscal Year (FY) 2026-27 Projects
It is estimated that the City will receive $302,190 in RMRA funding in FY 2026-27, which will enable the City to continue essential road maintenance projects that would not have otherwise been possible without SB 1. The FY 2026-27 RMRA contribution is proposed to be combined with existing RMRA, Gas Tax, and General Fund (Fund 301) carryover funds to implement the three projects listed below in FY 2026-27. These projects and estimated cost and funding source details will be included in the proposed FY 2026-27 Capital Improvement Program.

Agenda Item #7.6:

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Current projects have been presented to the City Council during the budget study session on May 27, 2026. The Biannual Slurry Seal Projects (CIP T-3) has been historically only funded by SB1 RMRA funding, with an average project budget of $350,000 to be completed every other year. Larger paving projects (Pavement Rehabilitation Projects, CIP T-5) utilize other transportation related restricted use fund (Gas Tax, Measure M), as well as General Fund (Fund 301) carryovers, and project costs can vary depending on the bid environment and project scope (example - the recently completed work on Fryer Creek Drive, Pickett Street, Nash Street, which was a total contract cost of $540,997 and incorporated funding from Gas Tax, SB1 RMRA, Measure M, and General Fund 301).

Pavement Preservation Project (Biannual Slurry Seal CIP T-3) This will include slurry treatment on selected streets: Bettencourt Street from Third Street West to Second Street West; Bragg Street from Clay Street to Dead End; Church Street from Fourth Street West to Third Street West; Clay Street from Fryer Creek Drive to Broadway; Fourth Street East from East Napa to East Spain Street; Leveroni Road from 234 ft west of Broadway to Broadway; Napa Road from 742 ft East of Broadway to City Limits (175 ft East of Pueblo Drive), Oak Lane from Chase Street to cul de sac; Third Street West from Arroyo Way to Bettencourt Street; Third Street West from Andrieux Street to Robinson Street; Third Street West from Robinson Street to West Napa Street; Third Street West from West Napa Street to West Spain Street.

Bids are scheduled to be open on June 30th, 2026, with anticipated construction start in August, 2026.

FY2026-27 Pavement Rehabilitation Project (CIP T-5)
This project will rehabilitate and/or reconstruct streets where pavement section has reached a very poor or failed condition. The repair method could include asphalt removal and replacement, full depth reclamation and/or rehabilitation/reconstruction methods. City staff will identify feasible locations, with construction estimated to begin in Spring 2027. Staff will evaluate street segments based on a variety of factors such as pavement condition index (PCI), pavement failures, and recommendations from the City Engineer.

Future Pavement Preservation Projects (Biannual Slurry Seal CIP T-3) This will include the design of future slurry projects - this includes identifying street segments for pavement surface maintenance preservation via crack seal and slurry seal projects. The City will be working with the Metropolitan Transportation Commission (MTC) through the Pavement Management Technical Assistance Program (P-TAP) for the design of a new set of slurry seal projects. This project was previously proposed and adopted for FY25-26, however, the P-TAP program is delayed due to issues with federal funding and needs to be carried over to FY26-27.

California Environmental Quality Act (CEQA) Compliance
The proposed projects are categorically exempt from CEQA pursuant to State CEQA Guidelines Sections 15301 (Class 1: Existing Facilities) and 15302 (Class 2: Replacement or Reconstruction) because the projects consist of (1) repair and maintenance of existing streets and similar facilities, and include road grading for the purpose of public safety; and (2) replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced and there is no possibility that the project will have a direct or reasonably foreseeable indirect effect on the environment.

Recommended Council Action
Agenda Item #7.6:

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Adopt a Resolution Approving the Fiscal Year 2025-26 Road Pavement Preservation and Rehabilitation Projects as the Projects for Fiscal Year 2026-27 Funded by Senate Bill 1: The Road Repair and Accountability Act of 2017 and Authorize the Public Works Department to Submit these Projects to the California Transportation Commission.

Alternative Actions
Council discretion. Please note that adopting a resolution as recommended by City staff is required to receive RMRA funding from SB1. The City must submit an approved project list to the CTC by July 1, 2026.

Financial Impact
In Fiscal Year 2026-27, the City is anticipated to receive $302,190 in RMRA funding. The funds received are proposed to be used for the FY26-27 Slurry Seal Project (CIP T-3), and for a Pavement Rehabilitation Project (locations to be determined - CIP T-5). These projects has been included in the Fiscal Year 2026-27 budget request to the City Council.

Environmental Review Status
Environmental Impact Report
Negative Declaration
Exempt
Not Applicable
Approved/Certified
No Action Required
Action Requested
Attachments
Resolution
Agenda Item #7.6:

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City of Sonoma
RESOLUTION # ________- 2026

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SONOMA, CALIFORNIA, ADOPTING A LIST OF PROJECTS FOR FISCAL YEAR 2026-27 FUNDED BY SENATE BILL 1:

THE ROAD REPAIR AND ACCOUNTABILITY ACT OF 2017 AND AUTHORIZING THE PUBLIC

WORKS DEPARTMENT TO SUBMIT THESE PROJECTS TO THE CALIFORNIA

TRANSPORTATION COMMISSION
WHEREAS, Senate Bill 1 (SB 1), the Road Repair and Accountability Act of 2017 (Chapter 5, Statutes of 2017) was passed by the Legislature and signed into law by the Governor in April 2017 to address the significant multi-modal transportation funding shortfalls statewide; and WHEREAS, SB 1 includes accountability and transparency provisions that will ensure the residents of the City of Sonoma are aware of the projects proposed for funding in our community and which projects have been completed each fiscal year; and
WHEREAS, the City of Sonoma must adopt by resolution a list of projects proposed to receive fiscal year funding from the Road Maintenance and Rehabilitation Account (RMRA), created by SB 1, which must include a description and the location of each proposed project, a proposed schedule for the project’s completion, and the estimated useful life of the improvement; and WHEREAS, the City of Sonoma, will receive an estimated $302,190 in RMRA funding in Fiscal Year 2026-27 from SB 1; and
WHEREAS, this is the ninth year in which the City of Sonoma is receiving SB 1 funding and will enable the City of Sonoma to continue essential road maintenance and rehabilitation projects, safety improvements, repairing and replacing aging bridges, and increasing access and mobility options for the traveling public that would not have otherwise been possible without SB 1; and WHEREAS, the City of Sonoma conducts a public process each year as part of the annual budget adoption to ensure public input into our community’s transportation priorities/the project list; and WHEREAS, the City of Sonoma used a Pavement Management System (PMS), consisting of approximately 33.79 centerline miles of paved roadways, to develop the SB 1 project list to ensure revenues are being used on the most high-priority and cost-effective projects that also meet the community’s priorities for transportation investment; and WHEREAS, the funding from SB 1 will help the City of Sonoma maintain and rehabilitate many streets throughout the City of Sonoma this year and numerous similar projects into the future; and WHEREAS, the 2023 California Statewide Local Streets and Roads Needs Assessment found that the City of Sonoma’s streets and roads are in “good” condition and this revenue will help us maintain our current condition, and potentially increase the overall quality of our road system over the next decade; and
WHEREAS, the SB 1 project list and overall investment in our local streets and roads infrastructure with a focus on basic maintenance and safety, investing in complete streets infrastructure, and using cutting-edge technology, materials and practices where possible, will have significant positive co-benefits statewide.

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NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Sonoma hereby finds the foregoing recitals are true and correct.

BE IT FURTHER RESOLVED that the City Council of the City of Sonoma hereby designates and approves the following projects to be funded in whole or part with Fiscal Year 2026-27 SB1 Road Maintenance and Rehabilitation Account revenues:

Project Title: 2026 Citywide Slurry Seal
Project Description: Work consists of street surface treatment (slurry seal) for various streets throughout the City, including surface preparation, crack seal, removal and replacement of pavement striping and markings, protection of existing utility structures, traffic control, water pollution control.

Project Location: Bettencourt Street from Third Street West to Second Street West; Bragg Street from Clay Street to Dead End; Church Street from Fourth Street West to Third Street West; Clay Street from Fryer Creek Drive to Broadway; Fourth Street East from East Napa to East Spain Street; Leveroni Road from 234 ft west of Broadway to Broadway; Napa Road from 742 ft East of Broadway to City Limits (175 ft East of Pueblo Drive), Oak Lane from Chase Street to cul de sac; Third Street West from Arroyo Way to Bettencourt Street; Third Street West from Andrieux Street to Robinson Street; Third Street West from Robinson Street to West Napa Street; Third Street West from West Napa Street to West Spain Street.

Estimated project schedule: Construction August-October 2026 Estimated project useful life: 5-7 years
Project Title: Pavement Rehabilitation Project
Project Description: design and possible construction of a future pavement rehabilitation project. The City will be evaluating streets to select streets for pavement rehabilitation and treatment type.

Project Location: Citywide (locations to be determined) Estimated project schedule: Preconstruction (design) September 2026 – January 2027, Construction March – June 2027
Estimated Project Useful Life: 25-30 years
BE IT FURTHER RESOLVED that the City Council of the City of Sonoma hereby finds and determines that the foregoing projects are categorically exempt from the California Environmental Quality Act (CEQA) pursuant to State CEQA Guidelines Sections 15301 (Class 1: Existing Facilities) and 15302 (Class 2: Replacement or Reconstruction) because the projects consist of (1) repair and maintenance of existing streets and similar facilities, including road grading for the purpose of public safety; and (2) replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced and there is no possibility that the project will have a direct or reasonably foreseeable indirect effect on the environment.

BE IT FURTHER RESOLVED that the following previously proposed and adopted projects may also utilize Fiscal Year 2026-27 Road Maintenance and Rehabilitation Account revenues in their delivery.

With the relisting of this project in the adopted fiscal year resolution, the City of Sonoma is reaffirming to the public and the State its intent to fund these projects with Road Maintenance and Rehabilitation Account revenues:

Project Title: Future Pavement Preservation Projects
Project Description: Design of future pavement surface maintenance preservation via crack seal and slurry seal projects. The City will be working with Metropolitan Transportation Commission (MTC) through PTAP-26 for a new set of slurry seal projects.

Project Location: Citywide (locations to be determined) Estimated project schedule: Preconstruction (design) September 2026-January 2027 Agenda Item #7.6:

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Estimated Project Useful Life: 5-7 years
BE IT FURTHER RESOLVED that the City of Sonoma Public Works Department is authorized to submit the foregoing new Fiscal Year 2026-27 projects and foregoing previously approved projects to the California Transportation Commission.

AYES:

NOES:

ABSENT:

ABSTAIN:
_________________________________
Ron Wellander, Mayor
ATTEST:
_________________________________
Rebekah Barr, MMC, City Clerk
Agenda Item #7.6:

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City of Sonoma
Agenda Item Summary
Meeting: City Council - 17 Jun 2026
Department
Public Works
Staff Contact
Ashley Cotter, PW Admin & Project Manager
Agenda Item Title
Public Hearing for the Updated Urban Water Management Plan and Water Shortage Contingency Plan
Summary
The City's 2025 Urban Water Management Plan (UWMP) and included Water Shortage Contingency Plan (WSCP) was prepared in accordance with the state of California Urban Water Management Planning Act (the Act), California Water Code Sections 10610 through 10657 and the 2025 Urban Water Management Plan Guidebook (made available in January 2026). The Act requires every urban water supplier providing water for municipal purposes to more than 3,000 connections, or supplying more than 3,000 acre-feet of water annually, to adopt and submit a plan every five years to the Department of Water Resources (DWR). The City authorized a contract with EKI via Resolution 28-2025 to draft an UWMP update. Having a current Urban Water Management Plan is a pre-requisite for agencies to receive State loans and grants for water infrastructure related expenses and projects.

The purpose of the UWMP and WSCP is to consolidate information related to water demand and supply such as historical data over the last 5 years, supply and demand projections through 2050 in various climates, and provide information and recommendations for water conservation and drought planning. In addition to looking at water supply at a municipal level, water supply is also evaluated at a regional level. In order to provide a comprehensive report and accurate projections, the City's UWMP was done in concert with a regional analysis that EKI Environment and Water was also contracted to provide (this contract was executed with the City of Santa Rosa, the City of Sonoma participated in this via a cost share agreement, as did other agencies in Sonoma County).

Similar to the 2020 UWMP and WSCP update, this cycle saw periods of drought through the reporting cycle (data from 2020-2025), although not as severe as the 2012-2016 drought period which was reflected in the 2020 UWMP reporting cycle (data from 2015-2020). Next steps resulting from the 2020 UWMP adoption included an ordinance to adopt two additional tiers for the WSCP to be implemented in times of severe drought, as required by DWR. This reporting cycle, no additional policy changes are required in order to meet requirements by DWR.

A review of water demand showed fluctuations over the last five years, driven in part by the drought measures implemented from 2021-2023, however, demand is increasing again. The largest sector of water demand is single family homes, which make up approximately 50% of the City's water demand. To provide water demand and supply projections, EKI also reviewed the City's General Plan build out and housing information. Population growth is expected to increase slightly, which will increase water demand, but this increase is within range of historical water demand data. The City's water supply is largely purchased by Sonoma County Water Agency (SCWA). Water purchases are budgeted in the water enterprise fund annually; water purchases are also incorporated into the rate study structure and are reflected in the recommended increases. The City can purchase up to 3,000 acre feet of water annually, which Agenda Item #8.1:

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is more than what is typically consumed in a year. Additionally, the City owns and operates several wells. The City has been able to meet all water demand, and the UWMP projects that the City will be able to meet projected water demands through 2050. It is important to note that this document is updated every five years, so any significant changes to the regional water supply will be reflected in the 2030 Urban Water Management Plan.

In conjunction with the updates to the UWMP and WSCP, the community is given the opportunity to give input on the City's updated plans. Drafts of both the UWMP and WSCP were uploaded to the website on May 27th, 2026, for public viewing. A notice of hearing was published in the Sonoma Index Tribune on June 5th and June 12th, 2026. Comments and corrections raised at the public hearing may be incorporated into the document, and the summary of the comments will be included in the appendix of the final UWMP submitted to the Department of Water Resources. The UWMP must be adopted by June 30th, 2026, and filed with DWR by July 1, 2026, and sent to the State Library.

According to the 2025 Urban Water Management Plan Guidebook, the public hearing for the UWMP and WSCP may take place at the same meeting as the adoption; however, the public hearing portion must take place before the adoption portion. The hearing portion and adoption must also be separate agenda items.

While it is the 2025 UWMP, it is being considered and adopted in 2026 because it utilizes data for a full reporting cycle - from 2020-2025, which requires a full and complete data set. Notice of Public Hearing and a Public Hearing for the updated UWMP and WSCP are required by Water Code Section 10642.

Recommended Council Action
Conduct a public hearing for the updated Urban Water Management Plan and Water Shortage Contingency Plan.

Alternative Actions
Council discretion.

Financial Impact
There are no financial implications as a result of this public hearing. A contract was executed with EKI in July 2025 for the preparation of the City's 2025 Urban Water Management Plan.

The cost of this contract is included in the Water Enterprise Fund.

Environmental Review Status
Environmental Impact Report
Negative Declaration
Exempt
Not Applicable
Approved/Certified
No Action Required
Action Requested
Attachments
Sonoma 2025 UWMP Public Draft 2026-05-28
Sonoma 2025 UWMP Appendices 2026-05-28
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CITY OF SONOMA
MAY 2026
PREPARED BY:

URBAN WATER

MANAGEMENT PLAN
2025

PUBLIC DRAFT
Agenda Item #8.1:

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2025 URBAN WATER MANAGEMENT PLAN
PUBLIC DRAFT | May 2026
Prepared for:

City of Sonoma
No. 1 The Plaza
Sonoma, California 95476
Prepared by:

EKI Environment & Water, Inc.
2001 Junipero Serra Blvd., Suite 300
Daly City, California 94014
(650) 292-9100
www.ekiconsult.com
C50070.00
Agenda Item #8.1:

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2025 Urban Water Management Plan
City of Sonoma
PUBLIC DRAFT | May 2026
EKI Environment & Water, Inc.
2025 URBAN WATER MANAGEMENT PLAN
City of Sonoma

TABLE OF CONTENTS
ES EXECUTIVE SUMMARY……………………………………………………………………………………………………….ES-1 1 PLAN INTRODUCTION........................................................................................................... 1-1

1.1 Background and Purpose................................................................................................. 1-1

1.2 Urban Water Management Planning and CWC...............................................................1-1

1.3 Plan Organization............................................................................................................. 1-2

1.4 UWMP Relationship to Other Efforts ..............................................................................1-2

1.5 Special Considerations..................................................................................................... 1-3

1.5.1 Demonstration of Consistency with the Delta Plan for Participants in Covered Actions............................................................................................ 1-3

1.5.2 Permitting for Ocean Desalination Projects .................................................1-3 2 PLAN PREPARATION ............................................................................................................. 2-1

2.1 Basis for Preparing the UWMP ........................................................................................ 2-1

2.2 Individual or Regional Plan .............................................................................................. 2-2

2.3 Fiscal or Calendar Year and Units of Measure.................................................................2-2

2.4 Standard Submittal Tables and Alignment with UWMP Act Requirements....................2-3

2.5 Coordination and Outreach ............................................................................................. 2-3

2.5.1 Wholesale and Retail Coordination ..............................................................2-3

2.5.2 Coordination with Other Agencies and the Community ..............................2-4

2.5.3 Notice to Cities and Counties........................................................................2-5 3 SERVICE AREA DESCRIPTION................................................................................................. 3-1

3.1 General Description ......................................................................................................... 3-1

3.2 Service Area Climate ........................................................................................................ 3-3

3.3 Service Area Population and Demographics....................................................................3-5

3.3.1 Future Population Growth............................................................................3-5

3.3.2 Future Employment Growth.........................................................................3-6

3.3.3 Other Social, Economic, and Demographic Factors......................................3-6

3.4 Land Uses within Service Area......................................................................................... 3-7

3.5 Water Distribution System ............................................................................................3-10 4 WATER USE CHARACTERIZATION.......................................................................................... 4-1

4.1 Non-Potable Versus Potable Water Use..........................................................................4-1

4.2 Water Use Sectors ........................................................................................................... 4-2

4.3 Past and Current Water Demand .................................................................................... 4-2

4.4 Distribution System Water Loss....................................................................................... 4-5

4.5 Projected Water Demand ................................................................................................ 4-8

4.5.1 Basis of Demand Projections ........................................................................4-8 Agenda Item #8.1:

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2025 Urban Water Management Plan
City of Sonoma
PUBLIC DRAFT | May 2026
EKI Environment & Water, Inc.

4.5.2 Water Savings from Codes, Standards, Ordinances, or Transportation and Land Use Plans....................................................................................... 4-8

4.5.3 Projected Total Water Demand....................................................................4-9

4.5.4 Water Use by Lower Income Households...................................................4-11

4.5.5 Characteristic Five-Year Water Use ............................................................4-11

4.6 Water Use Sectors Not Included in Demand Projections..............................................4-12

4.7 Coordinating Water Use Projections.............................................................................4-12

4.8 Urban Water Use Objective...........................................................................................4-13 5 SB X7-7 BASELINE, 2020 TARGET, AND 2025 REPORTING ...................................................... 5-1 6 NORMAL YEAR WATER SUPPLY CHARACTERIZATION ............................................................ 6-3

6.1 Purchased Water ............................................................................................................. 6-3

6.1.1 Sonoma Water Surface Water Supply ..........................................................6-3

6.1.2 Sonoma Water Surface Water Rights...........................................................6-5

6.1.3 Sonoma Water Groundwater Supply............................................................6-5

6.2 Groundwater.................................................................................................................... 6-6

6.2.1 Basin Description and Status........................................................................6-6

6.2.2 Groundwater Management..........................................................................6-9

6.2.3 Coordination with Groundwater Sustainability Agencies...........................6-10

6.2.4 Historical Pumping and Supply Sufficiency.................................................6-11

6.3 Surface Water................................................................................................................ 6-11

6.4 Stormwater.................................................................................................................... 6-12

6.5 Wastewater and Recycled Water ..................................................................................6-12

6.5.1 Recycled Water Coordination.....................................................................6-12

6.5.2 Wastewater Collection, Treatment, and Disposal......................................6-12

6.5.3 Comparison of Previously Projected Use and Actual Use ..........................6-13

6.5.4 Actions to Encourage and Optimize Future Recycled Water Use...............6-13

6.5.5 Recycled Water System and Recycled Water Beneficial Uses....................6-14

6.6 Desalinated Water Opportunities..................................................................................6-17

6.7 Water Exchanges and Transfers ....................................................................................6-17

6.8 Future Water Projects.................................................................................................... 6-17

6.9 Summary of Existing and Planned Sources of Water.....................................................6-19

6.10 Special Conditions.......................................................................................................... 6-21

6.10.1 Climate Change Effects...............................................................................6-21

6.10.2 Regulatory Conditions and Project Development ......................................6-22

6.10.3 Other Locally Applicable Criteria ................................................................6-22

6.11 Energy Intensity ............................................................................................................. 6-22 7 WATER SUPPLY RELIABILITY ASSESSMENT ............................................................................ 7-1

7.1 Constraints on Water Sources......................................................................................... 7-1

7.1.1 Supply Availability......................................................................................... 7-1

7.1.2 Water Quality................................................................................................ 7-4

7.1.3 Climate Change............................................................................................. 7-5

7.2 Reliability by Type of Year................................................................................................ 7-5 Agenda Item #8.1:

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2025 Urban Water Management Plan
City of Sonoma
PUBLIC DRAFT | May 2026
EKI Environment & Water, Inc.

7.2.1 Purchased Water .......................................................................................... 7-6

7.2.2 Local Groundwater ....................................................................................... 7-6

7.2.3 Recycled Water............................................................................................. 7-7

7.3 Supply and Demand Assessment..................................................................................... 7-7

7.4 Water Supply Management Tools and Options.............................................................7-10

7.5 Drought Risk Assessment............................................................................................... 7-10

7.5.1 Data, Methods, and Basis for Water Shortage Condition ..........................7-10

7.5.2 Drought Risk Assessment Individual Water Source Reliability ...................7-11

7.5.3 Drought Risk Assessment Total Water Supply and Use Comparison .........7-11 8 WATER SHORTAGE CONTINGENCY PLANNING ...................................................................... 8-1 9 DEMAND MANAGEMENT MEASURES ................................................................................... 9-1

9.1 Regional Water Conservation.......................................................................................... 9-1

9.2 Agency Water Conservation ............................................................................................ 9-3

9.2.1 DMM 1 – Water Waste Prevention Ordinances...........................................9-4

9.2.2 DMM 2 – Metering ....................................................................................... 9-4

9.2.3 DMM 3 – Conservation Pricing .....................................................................9-4

9.2.4 DMM 4 – Public Education and Outreach ....................................................9-5

9.2.5 DMM 5 – Programs to Assess and Manage Distribution System Real Loss ............................................................................................................... 9-5

9.2.6 DMM 6 – Water Conservation Program Coordination and Staffing Support ......................................................................................................... 9-6

9.2.7 DMM 7 – Other Demand Management Measures.......................................9-6

9.3 Past Implementation ........................................................... Error! Bookmark not defined.

9.4 Implementation to Achieve Water Use Targets and Urban Water Use Objectives ........9-6 10 PLAN ADOPTION, SUBMITTAL, AND IMPLEMENTATION...................................................... 10-1

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

10.3 Public Hearing and Adoption .........................................................................................10-3

10.4 Plan Submittal................................................................................................................ 10-3

10.5 Public Availability ........................................................................................................... 10-4

10.6 Amending an Adopted UWMP or Water Shortage Contingency Plan...........................10-4 11 REFERENCES ....................................................................................................................... 11-1 Agenda Item #8.1:

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2025 Urban Water Management Plan
City of Sonoma
PUBLIC DRAFT | May 2026
EKI Environment & Water, Inc.

TABLES
Table 2-1 Public Water Systems (DWR Table 2-1)...........................................................................2-2 Table 2-2 Plan Identification (DWR Table 2-2) ................................................................................2-2 Table 2-3 Supplier Identification (DWR Table 2-3) ..........................................................................2-3 Table 2-4 Water Supplier Information Exchange (DWR Table 2-4) .................................................2-4 Table 3-1 Climate Characteristics ....................................................................................................3-3 Table 3-2 Population – Current and Projected (DWR Table 3-1).....................................................3-5 Table 3-3 Employment – Current and Projected.............................................................................3-6 Table 3-4 Demographic and Housing Characteristics, 2020-2024...................................................3-7 Table 4-1 2025 Actual Total Uses for Potable and Non-Potable Water (DWR Table 4-1)...............4-3 Table 4-2 Water Loss Audit Reporting Water Code Section 10631(d)(3)(A) (DWR Table 4-5)........4-5 Table 4-3 Progress Towards 2028 Water Loss Standard (DWR Table 4-6)......................................4-7 Table 4-4 Projected Total Water Demand and Projected Passive and Active Water Conservation4-9 Table 4-5 Total Uses of Potable and Non-Potable Water – Projected (DWR Table 4-2)...............4-10 Table 4-6 Inclusion in Water Use Projections (DWR Table 4-3) ....................................................4-10 Table 4-7 Projected Water Use for Lower Income Households ....................................................4-11 Table 4-8 Characteristic Five-Year Water Use (AF)........................................................................4-12 Table 4-9 Current and Projected Urban Water Use Objectives Compliance.................................4-14 Table 5-1 SB X7-7 2020 Target Progress (DWR Table 5-1)...............................................................5-2 Table 6-1 Groundwater Volume Pumped (DWR Table 6-1) ..........................................................6-11 Table 6-2 Wastewater Collected Within Service Area in 2025 (DWR Table 6-2) ..........................6-13 Table 6-3 Wastewater Treatment and Outcomes Within UWMP Service Area in 2025 (DWR Table 6- 3)....................................................................................................................................6-13 Table 6-4 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual (DWR Table 6-5) .......................................................................................................................................6-13 Table 6-5 Methods to Encourage Future Recycled Water Use (DWR Table 6-6) ..........................6-14 Table 6-6 Recycled Water Direct Beneficial Uses Within Service Area (DWR Table 6-4)..............6-16 Table 6-7 Expected Future Water Supply Projects or Programs (DWR Table 6-7)........................6-18 Table 6-8 Water Supplies – 2025 Actual (DWR Table 6-8) ............................................................6-19 Table 6-9 Source Water Desalination by Urban Water Supplier (DWR Table 6-8 DS)...................6-20 Table 6-10 Water Supplies – Projected (DWR Table 6-9)................................................................6-20 Table 6-11 Recommended Energy Reporting: Single Delivery Product, Total Utility Approach (DWR Table O-1B) ....................................................................................................................6-23 Table 7-1 Basis of Water Year Data (Reliability Assessment) (DWR Table 7-1)...............................7-6 Table 7-2 Projected Availability of Sonoma Water Supply (Responds to DWR Table 7-1)..............7-6 Table 7-3 Projected Availability of Local Groundwater Supply (Responds to DWR Table 7-1).......7-7 Table 7-4 Projected Availability of Recycled Water Supply (Responds to DWR Table 7-1).............7-7 Table 7-5 Normal Year Supply and Demand Comparison (DWR Table 7-2)....................................7-8 Table 7-6 Single Dry Year Supply and Demand Comparison (DWR Table 7-3)................................7-8 Agenda Item #8.1:

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2025 Urban Water Management Plan
City of Sonoma
PUBLIC DRAFT | May 2026
EKI Environment & Water, Inc.

Table 7-7 Five Consecutive Dry Years Supply and Demand Comparison (DWR Table 7-4).............7-9 Table 7-8 Five-Year Drought Risk Assessment (DWR Table 7-5) ...................................................7-11 Table 8-1 Cross-reference for Standard vs Supplier Shortage Levels (DWR Table 8-1) ..................8-1 Table 8-2 Supply Augmentation and Other Actions (DWR Table 8-2).............................................8-2 Table 8-3 Demand Reduction Actions (DWR Table 8-3)..................................................................8-3 Table 9-1 Implementation of Customer DMMs: 2021-2024 ...........................................................9-6 Table 10-1 Notification to Cities and Counties (DWR Table 10-1)...................................................10-2

FIGURES
Figure 3-1 City Location and Service Boundaries..............................................................................3-2 Figure 3-2 Average Monthly Climatic Conditions .............................................................................3-4 Figure 3-3 Observed and Forecasted Temperature for the City of Sonoma ....................................3-4 Figure 3-4 Population – Historic and Projected ................................................................................3-6 Figure 3-5 City Service Area Land Use......................................................................................................3-9 Figure 3-6 City Water System Map ........................................................................................................3-11 Figure 4-1 Total Uses for Potable and Non-Potable Water - 2021 – 2025 Actual ............................4-4 Figure 4-2 Historical Per Capita Water Use.......................................................................................4-4 Figure 6-1 Sonoma Water Service Area and Water Transmission System Facilities................................6-4 Figure 6-2 Regional Setting and Groundwater Basins ......................................................................6-8

APPENDICES
Appendix A Completed UWMP Checklist
Appendix B 2025 Urban Water Management Plan Water Demand Analysis and Water Conservation Measures Update
Appendix C UWMP Preparation Notification Letter
Appendix D Public Hearing Notices
Appendix E Water Shortage Contingency Plan
Appendix F Resolution to Adopt the UWMP and WSCP
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2025 Urban Water Management Plan
City of Sonoma
PUBLIC DRAFT | May 2026
EKI Environment & Water, Inc.

ABBREVIATIONS AND ACRONYMS
AB Assembly Bill
ABAG Association of Bay Area Governments
AC Asbestos-cement
AF Acre-feet
AFY Acre feet per year
AMI Advanced metering infrastructure
ASR Aquifer storage and recovery
AWE Alliance for Water Efficiency
AWWA American Water Works Association
BAP Basin Advisory Panel
CalWEP California Water Efficiency Partnership
CCR California Code of Regulations
CEQA California Environmental Quality Act
cfs Cubic Feet per Second
CGC Not Found
CII Commercial, Industrial, and Institutional
CIMIS California Irrigation Management System
CMIP Coupled Model Intercomparison Project
CWC California Water Code
CY Calendar Year
DDW Division of Drinking Water
DIM Dedicated Irrigation Meter
DIY Do-It-Yourself
DMM Demand Management Measure
DOF Department of Finance
DWR Department of Water Resources
EIR Environmental Impact Report
EO Executive Order
ft msl Feet Above Mean Sea Level
FY Fiscal Year
GMP Groundwater Management Plan
GPCD Gallons per capita per day
gpm Gallons per Minute
GPSCD Gallons per Service Connection per Day
GSA Groundwater Sustainability Agency
GSP Groundwater Sustainability Plan
kWh Kilowatt-hour
LAFCO Local Agency Formation Commission
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2025 Urban Water Management Plan
City of Sonoma
PUBLIC DRAFT | May 2026
EKI Environment & Water, Inc.

LEF Landscape Efficiency Factor
LOCA Localized Constructed Analogs
MCCWL Making Conservation a California Way of Life
MCLs Maximum Contaminant Levels
MG Million Gallons
mgd Million Gallons per Day
MJHMP Multi-jurisdictional Hazard Mitigation Plan
NMFS National Marine Fisheries Service
NOAA National Oceanic and Atmospheric Administration
OSA Outside service area
PE Polyethylene
PG&E Pacific Gas and Electric
PVC polyvinylchloride
PVID Potter Valley Irrigation District
PVP Potter Valley Project
PWS Public Water Systems
RCP Representative Concentration Pathway
RHNA Regional Housing Needs Allocation
RPMs Reasonable and Prudent Measures
RUWMP Regional Urban Water Management Plan
SB Senate Bill
SGMA Sustainable Groundwater Management Act
SMSWP Sonoma-Marin Saving Water Partnership
SOI Sphere of Influence
STL Not Found
SVCSD Sonoma Valley County Sanitation District
SWRCB State Water Resources Control Board
TAC Technical Advisory Committee
TDS Total Dissolved Solids
TUCP Temporary Urgency Change Petitions
UGB Urban Growth Boundary
USACE U.S. Army Corps of Engineers
USEPA United States Environmental Protection Agency
UWMP Urban Water Management Plan
UWUO Urban Water Use Objective
VOMWD Valley of the Moon Water District
WAC Water Advisory Committee
WSCP Water Shortage Contingency Plan
WWTP Wastewater Treatment Plant
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2025 Urban Water Management Plan
Executive Summary City of Sonoma
PUBLIC DRAFT | May 2026
ES-1 EKI Environment & Water, Inc.

EXECUTIVE SUMMARY
 CWC §10630.5
Each plan shall include a simple lay description of how much water the agency has on a reliable basis, how much it needs for the foreseeable future, what the agency’s strategy is for meeting its water needs, the challenges facing the agency, and any other information necessary to provide a general understanding of the agency’s plan.

This Urban Water Management Plan (UWMP or Plan) is prepared for the City of Sonoma (also referred to as the City), which serves drinking water and recycled water to a population of approximately 11,462 in Sonoma County. The City's primary source of water is imported surface water purchased from Sonoma County Water Agency (Sonoma Water), derived from the Russian River, supplemented by local groundwater and recycled water supply.

This UWMP serves as a foundational planning document and includes descriptions of the City's historical and projected water demands, as well as its water supplies and their associated reliability over a 25-year planning horizon. This document also describes the actions the City is taking to promote water conservation — both by the City itself and by its customers (referred to as "demand management measures") — and includes a plan to address potential water supply shortages such as drought or other impacts to supply availability (the "Water Shortage Contingency Plan"). This UWMP is updated every five years in accordance with state requirements under the Urban Water Management Planning Act and amendments (Division 6 Part 2.6 of the California Water Code [CWC] §§10610–10656). Past plans developed for the City are available on the California Department of Water Resources (DWR) Water Use Efficiency Data Portal website: https://wuedata.water.ca.gov/. This document includes 11 chapters, which are summarized below.

Chapter 1 — Plan Introduction
This chapter presents the background and purpose of the UWMP and identifies the Plan organization.

Chapter 1 also provides a summary of how the UWMP relates to other planning efforts, which include the City of Sonoma and County of Sonoma General Plans, Water Master Plans, Groundwater Management Plans, and Groundwater Sustainability Plans. As such, the City does not need to demonstrate consistency with the Delta Plan. Additionally, as discussed in Chapters 6 and 7, the City has sufficient water supplies to meet projected demands through the 2050 planning horizon and does not anticipate the need for an ocean desalination project.

Chapter 2 — Plan Preparation
This chapter discusses key structural aspects related to the preparation of the UWMP and describes the coordination and outreach conducted as part of Plan preparation. The City prepared an individual UWMP and is also a member of the Sonoma-Marin Saving Water Partnership (SMSWP).

The City coordinated during preparation of this UWMP with Sonoma Water and the other eight Water Contractors through the Sonoma Water Technical Advisory Committee (TAC) and Water Advisory Committee (WAC). The City also coordinated with the Sonoma Valley County Sanitation District (SVCSD) regarding wastewater and recycled water planning.

Chapter 3 — Service Area Description
This chapter provides a description of the City's water system and service area, including information related to the climate, population, and demographics. The City's service area encompasses the city limits as well as limited properties in the Sonoma County jurisdictional area, covering approximately 2.5 square miles and serving primarily residential and commercial customers.

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2025 Urban Water Management Plan
Executive Summary City of Sonoma
PUBLIC DRAFT | May 2026
ES-2 EKI Environment & Water, Inc.

The City's climate is characterized by dry, warm summers and mild, wet winters, with most rainfall occurring between November and May. Climate projections indicate an average temperature increase of

3.3°F under medium emissions scenarios and 4.2°F under high emissions scenarios by mid-century, which may increase landscape irrigation demands and reduce water supply reliability.

The City's service area population was 11,462 in 2025. The City's population is older and less racially diverse than the state as a whole, with higher educational attainment and median household income, and a lower poverty rate.

Chapter 4 — Water Use Characterization
This chapter provides a description and quantifies the City's current and projected demands through 2050.

The City provides drinking water (also referred to as "potable water") and a small volume of recycled water to its customers. Total water demand within the City was 1,978 acre-feet (AF) in 2025, comprising 1,957 AF of potable water and 21 AF of recycled water used for landscape irrigation.

Accounting for modest population growth through 2030 and passive water conservation savings from plumbing code improvements and building standards, total potable water demand is projected to increase to approximately 2,190 AF by 2030 and remain relatively stable thereafter, declining slightly to approximately 2,158 AF by 2050 as passive conservation savings accumulate.

The City currently meets the 2028 water loss performance standards established by the State Water Resources Control Board (SWRCB). The City also reports on its Urban Water Use Objective (UWUO) compliance in Chapter 4, as required under SB 606/AB 1668.

Chapter 5 — SB X7-7 Baseline, 2020 Target, and 2025 Reporting In this chapter, the City demonstrates compliance with its per capita water use target for the year 2020.

The Water Conservation Act of 2009 (SB X7-7) was enacted in November 2009 and requires the state of California to achieve a 20% reduction in urban per capita water use by December 31, 2020. To achieve this statewide reduction, each urban retail water supplier was required to establish water use targets for 2015 and 2020 using methodologies established by DWR. The City reports on SB X7-7 compliance as a member of the SMSWP regional alliance. , having achieved a per capita water use of 113 gallons per capita per day (GPCD) in 2020 against a regional alliance target of 129 GPCD.

Chapter 6 — Normal Year Water Supply Characterization
This chapter presents an analysis of the City's water supplies. The intent of this chapter is to present a comprehensive overview of the City's water supplies, estimate the volume of available supplies over the 25-year planning horizon, and assess the sufficiency of the City's supplies to meet projected demands under "normal" hydrologic conditions.

The City obtains the majority of its potable water from Sonoma Water, which delivers treated Russian River water through a regional transmission system. The City also operates local groundwater wells located adjacent to the Sonoma Valley Groundwater Subbasin. The City currently uses recycled water for landscape irrigation, though recycled water demands are limited. Recycled water demands are projected to remain stable through 2050.

Key supply planning considerations include the ongoing regulatory uncertainty surrounding the Potter Valley Project (PVP) — a major source of inflow to the Russian River — and potential future reductions in Sonoma Water's water rights due to environmental flow requirements. The City and Sonoma Water are actively engaged in long-term planning to address these constraints. Calculation and reporting of water system energy intensity is also included in this chapter.

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2025 Urban Water Management Plan
Executive Summary City of Sonoma
PUBLIC DRAFT | May 2026
ES-3 EKI Environment & Water, Inc.

Chapter 7 — Water Supply Reliability Assessment
This chapter assesses the reliability of the City's water supplies, with a specific focus on potential constraints such as Russian River supply availability, water quality, and climate change. The intent of this chapter is to identify any potential constraints that could affect the reliability of the City's supply and to assess water service reliability during normal, single dry-year, and multiple dry-year hydrologic conditions.

Based on the supply reliability analysis, the City is expected to have adequate water supplies to meet projected demands through 2050 under all hydrologic conditions — normal, single dry year, and five consecutive dry years. A Drought Risk Assessment (DRA) was also conducted, evaluating the effects of an assumed five-year drought commencing in 2026 through 2030. Based on the DRA, the City is expected to have sufficient water supply from 2026 through 2030 under drought conditions.

Chapter 8 — Water Shortage Contingency Planning
This chapter describes the Water Shortage Contingency Plan (WSCP) for the City, which is included as Appendix E to this UWMP. The WSCP serves as a standalone document to be engaged in the case of a water shortage event, such as a drought or supply interruption. The WSCP defines specific policies and actions that will be implemented at various shortage level scenarios (e.g., implementing customer water budgets and surcharges, or restricting landscape irrigation to specific days and/or times).

Chapter 9 — Demand Management Measures
This chapter includes descriptions of the City's past and planned conservation program implementation within each demand management measure (DMM) category outlined in the UWMP Act, specifically: (1) water waste prevention ordinances, (2) metering, (3) conservation pricing, (4) public education and outreach, (5) distribution system water loss management, (6) water conservation program coordination and staffing support, and (7) "other" DMMs. The City implements these programs both independently and in coordination with the SMSWP regional partnership, which administers regional conservation programs on behalf of all Water Contractors.

Chapter 10 — Plan Adoption, Submittal, and Implementation This chapter provides information on the public hearing, the adoption process for the 2025 UWMP, the adopted UWMP submittal process, Plan implementation, and the process for amending the adopted UWMP. In addition, this chapter provides information on the adoption of the included WSCP. Prior to adopting the Plan and WSCP, the City held a formal public hearing to present information on the UWMP on June 3, 2026. This UWMP and WSCP will be submitted to DWR within 30 days of adoption and by the July 1, 2026 deadline.

Chapter 11 – References
This chapter provides a list of documents referenced throughout the 2025 UWMP.

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Section 1 2025 Urban Water Management Plan
Plan Introduction City of Sonoma
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1 PLAN INTRODUCTION
This section discusses the importance and uses of this Urban Water Management Plan (UWMP or Plan), the relationship of this Plan to the California Water Code (CWC), the relationship of this Plan to other local and regional planning efforts, and how this Plan is organized and developed in general accordance with the California Department of Water Resources’ (DWR) 2025 UWMP Guidebook.

1.1 Background and Purpose
This UWMP addresses the City of Sonoma (City) water system. Most of the City’s water supply comes from Sonoma County Water Agency (Sonoma Water), which provides surface water from the Russian River, supplemented by groundwater. The City delivers water to residential, commercial / institutional, and landscape irrigation customers.

This UWMP is a foundational document and source of information about the City’s historical and projected water demands, water supplies, supply reliability and potential vulnerabilities, water shortage contingency planning, and demand management programs. Among other things, it is used as:
• A long-range planning document for water supply and system planning; and • A source for data on population, housing, water demands, water supplies, and capital improvement projects used in:
• Regional water resource management plans prepared by wholesale water suppliers and other regional planning authorities (as applicable),
• General Plans prepared by cities and counties, and
• Statewide and broad regional water resource plans prepared by DWR, the State Water Resources Control Board (SWRCB), or other state agencies.

The City’s last UWMP was adopted in 2021, referred to herein as the “2020 UWMP.” This Plan is an update to the 2020 UWMP, carries forward information from that plan that remains current and relevant, and provides additional information as required by subsequent amendments to the UWMP Act (CWC §10610- 10657). Although this Plan is an update to the 2020 UWMP, it was developed to be a self-contained, standalone document and does not require readers to reference information contained in previous UWMP updates

1.2 Urban Water Management Planning and CWC
The UWMP Act requires urban water suppliers to prepare a UWMP every five years and to submit this plan to the DWR, the California State Library, and any city or county within which the supplier provides water supplies. All urban water suppliers, 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 acrefeet per year (AFY) are required to prepare a UWMP (CWC §10617).

The UWMP Act was enacted in 1983. Over the years it has been amended in response to water resource challenges and planning imperatives confronting California. A significant amendment was made in 2009 following the Governor’s call for a statewide 20% reduction in urban water use by 2020, referred to as the Water Conservation Act of 2009, or “SB X7-7.” This amendment required urban retail water suppliers to establish water use targets for 2015 and 2020 that would result in statewide water savings of 20% by 2020. Beginning in 2016, urban retail water suppliers were required to comply with the water conservation requirements in SB X7-7 to be eligible for state water grants or loans. Chapter 5 of this Plan contains the data and calculations used to determine compliance with these requirements.

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Section 1 2025 Urban Water Management Plan
Plan Introduction City of Sonoma
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In 2016, Governor Brown signed Executive Order (EO) B-37-16 Making Conservation a California Way of Life (MCCWL). Subsequently, the Legislature passed Senate Bill (SB) 606 and Assembly Bill (AB) 1668, which added new drought planning requirements, including:
1) Additional Water Shortage Contingency Plan (WSCP) requirements (CWC §10640), 2) Drought risk assessments to assess water supply reliability in UWMPs for a drought period lasting five consecutive water years (WY) (CWC §10635(b)), and
3) Annual water supply and demand assessments to determine water supply reliability for the current year and one subsequent dry year (CWC §10632(a)).

These elements are included in Chapter 7 and Chapter 8 of this Plan. Additionally, SB 606/AB 1668 set new requirements for urban water suppliers to further increase water use efficiency beyond SB X7-7.

Beginning in 2024, agencies were required to report an annual Urban Water Use Objective (UWUO).

Chapter 4 of this Plan documents the City’s progress in meeting the UWUOs.

The UWMP Act contains numerous other requirements that a UWMP must satisfy. Appendix A lists each of these requirements and where in the Plan they are addressed.

1.3 Plan Organization
The organization of this Plan follows the same sequence as outlined in the 2025 UWMP Guidebook. • Chapter 1 Plan Introduction
• Chapter 2 Plan Preparation
• Chapter 3 Service Area Description
• Chapter 4 Water Use Characterization
• Chapter 5 SB X7-7 Baseline, 2020 Target, and 2025 Reporting • Chapter 6 Normal Year Water Supply Characterization
• Chapter 7 Water Supply Reliability Assessment
• Chapter 8 Water Shortage Contingency Plan
• Chapter 9 Demand Management Measures
• Chapter 10 Plan Adoption, Submittal, and Implementation • Chapter 11 References
In addition to these sections, this Plan includes appendices providing supporting documentation and supplemental information. Pursuant to CWC §10644(a)(2), this Plan utilizes the standardized forms, tables, and displays developed by DWR for the reporting of water use and supply information required by the UWMP Act. This Plan also includes additional tables, figures, and maps to augment the set developed by DWR, as appropriate. The table headers indicate if the table is part of DWR’s standardized set of submittal tables. A lay description of the UWMP, including information related to water service reliability, potential issues, and strategies for managing reliability risks, is provided at the beginning of this UWMP.

1.4 UWMP Relationship to Other Efforts
This Plan provides information specific to water management and planning by the City. However, water management does not happen in isolation; there are other planning processes that integrate with the UWMP to accomplish urban planning. Some of these relevant planning documents include relevant City Agenda Item #8.1:

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Section 1 2025 Urban Water Management Plan
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of Sonoma and County of Sonoma General Plans, Water Master Plans, Groundwater Management Plans, Groundwater Sustainability Plans, and others.

This Plan is informed by and helps to inform these other planning efforts. In particular, this Plan utilizes information contained in City of Sonoma and County of Sonoma General Plans and local and regional water resource plans to the extent data from these plans are applicable and available.

1.5 Special Considerations
This Plan includes information beyond the requirements of the UWMP Act to support other regulatory processes that rely on UWMP data, including the Delta Plan and permitting for ocean desalination projects.

1.5.1 Demonstration of Consistency with the Delta Plan for Participants in Covered Actions Although not required by the UWMP Act, in the 2025 UWMP Guidebook, DWR recommends that all suppliers that are participating in, or may participate in, receiving water from a proposed project that is considered a “covered action” under The Delta Plan by the Delta Stewardship Council—such as a (1) multiyear water transfer, (2) conveyance facility, or (3) new diversion that involves transferring water through, exporting water from, or using water in the Delta—provide information in their UWMP to demonstrate consistency with the Delta Plan Policy WR P1, Reduce Reliance on the Delta Through Improved Regional Water Self-Reliance (California Code of Regulations [CCR], Title 23, Section 5003).

The City’s primary source of water supply is imported water from Sonoma Water’s Russian River Project, supplemented by local groundwater, and therefore the City does not receive water or plan to receive water from a “covered action” under the Delta Plan. As such, this requirement is not applicable.

1.5.2 Permitting for Ocean Desalination Projects
California’s Water Supply Strategy: Adapting to a Hotter, Drier Future updates state priorities to address water supply shortages due to long-term drought and the accelerating impacts of climate change, including identifying opportunities to access new water sources such as ocean desalination. To streamline permitting for ocean desalination projects, the Seawater Desalination Siting and Streamlining Report to Expedite Permitting recommends that UWMPs clearly demonstrate the need for future or proposed ocean desalination projects.

As discussed in Chapter 6 and Chapter 7, the City has sufficient water supplies available to meet projected demands through the 2050 planning horizon and does not anticipate the need for an ocean desalination project. Therefore, the City will not pursue ocean desalination to augment its supply portfolio.

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Section 2 2025 Urban Water Management Plan
Plan Preparation City of Sonoma
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2 PLAN PREPARATION
This section discusses the type of UWMP prepared by the City and includes information that applies throughout the Plan. It also summarizes coordination and outreach during Plan development.

2.1 Basis for Preparing the UWMP
 CWC §10617
“Urban water supplier” means a supplier, either publicly or privately owned, providing water for municipal purposes either directly or indirectly to more than 3,000 customers or supplying more than 3,000 acre-feet of water annually.

An urban water supplier includes a supplier or contractor for water, regardless of the basis of right, which distributes or sells for ultimate resale to customers. This part applies only to water supplied from public water systems subject to Chapter 4 (commencing with Section 116275) of Part 12 of Division 104 of the Health and Safety Code.  CWC §10608.12
(t) “Urban retail water supplier” means a water supplier, either publicly or privately owned, that directly provides potable municipal water to more than 3,000 end users or that supplies more than 3,000 acre-feet of potable water annually at retail for municipal purposes.
(w) “Urban wholesale water supplier” means a water supplier, either publicly or privately owned, that provides more than 3,000 acre-feet of water annually at wholesale for potable municipal purposes.  CWC §10620
(b) Every person that becomes an urban water supplier shall adopt an urban water management plan within one year after it has become an urban water supplier.
 CWC §10621
(a) Each urban water supplier shall update its plan at least once every five years on or before July 1, in years ending in six and one, incorporating updated and new information from the five years preceding each update.  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.

An urban water supplier is defined in CWC §10617 as a supplier, either publicly or privately owned, providing water for municipal purposes either directly or indirectly to 3,000 customers or supplying more than 3,000 AFY.

The City operates the Public Water Systems (PWS) listed in Table 2-1. PWSs are the systems that provide drinking water for human consumption and are regulated by the SWRCB, Division of Drinking Water. The SWRCB requires that water agencies report water use and other relevant PWS information via the electronic Annual Reports to the Drinking Water Program (eARDWP). These data are used by the state to determine, among other things, whether an urban retail water supplier has reached the threshold for submitting a UWMP. In 2025, the City provided water to 4,526 accounts and served 1,906 acre-feet (AF) of water (Table 2-1). The City is therefore subject to the requirements of the UWMP Act.

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Table 2-1 Public Water Systems (DWR Table 2-1)
PWS
Number PWS Name
Number of
Municipal
Connections 2025
Volume of
Water Supplied
2025 (AF)
Has there been a
change in the number
of affiliated PWSs
since the 2020 UWMP?
CA4910012 City of Sonoma 4,526 1,905 No
Total 4,526 1,905

2.2 Individual or Regional Plan
Urban water suppliers may elect to prepare individual or regional UWMPs. The City has elected to prepare an individual UWMP (Table 2-2). However, the 2025 UWMP was developed in close coordination with its wholesaler, Sonoma Water, and other agencies that receive water from Sonoma Water (referred to herein as Water Contractors). Furthermore, a regional Alliance was formed in 2011 among these agencies including the cities of Santa Rosa, Rohnert Park, Sonoma, Cotati, Petaluma, Town of Windsor, Marin Municipal Water District, Valley of the Moon Water District (VOMWD), and North Marin Water District to comply with SB X7-7, the Water Conservation Act of 2009. This regional Alliance, referred to in Table 2-2 as the “North Marin-Sonoma Alliance” but more typically referred to as the Sonoma-Marin Saving Water Partnership (SMSWP), is used within the 2025 UWMP for reporting on regional water use targets (see Chapter 5). All other elements of the CWC requirements are addressed in the City’s Individual Plan.

Table 2-2 Plan Identification (DWR Table 2-2)
Type of Plan Name of Regional Alliance or RUWMP
☒ Individual UWMP
☒ Water Supplier is also a member of a SB X7-7
Regional Alliance
North Marin-Sonoma Alliance
☐ RUWMP

2.3 Fiscal or Calendar Year and Units of Measure
 CWC §10608.20
(a)(1) Urban retail water suppliers … may determine the targets on a fiscal year or calendar year basis.

Per CWC §10617, City is an urban water supplier providing water for municipal purposes to more than 3,000 customers or supplying more than 3,000 acre-feet (AF) of water annually. It is therefore obligated under CWC §10621(f) to develop and submit a UWMP to DWR by July 1, 2026. The City is an urban retail water supplier, as defined by CWC §10608.12(t) and §10617, and as identified in Table 2-3. The City is not a wholesale water supplier.

Annual volumes of water reported in this UWMP are measured in AF and are reported on a calendar year basis (Table 2-3). Water use and planning data reported in this UWMP for calendar year 2025 cover the full twelve months of the year, as required by the UWMP Guidelines.

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Section 2 2025 Urban Water Management Plan
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Table 2-3 Supplier Identification (DWR Table 2-3)
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 (fiscal year begins: mm/dd).

Units of measure used in UWMP
Unit AF

2.4 Standard Submittal Tables and Alignment with UWMP Act Requirements The Plan has been prepared in general accordance with the format suggested in DWR’s 2025 UWMP Guidebook. Text from the UWMP Act has been included in text boxes at the beginning of relevant sections of this UWMP. The information presented in the respective UWMP sections, and the associated text, figures, and charts are collectively intended to fulfill the requirements of that subsection of the UWMP Act. To the extent practicable, supporting documentation has also been provided in Appendices A through F. Other sources for the information contained herein are provided in the references section of the document.

Per CWC §10644(a)(2), selected information for the UWMP updates must be presented in standardized tables for electronic submittal to DWR. Text and tables in the main body of the UWMP document have been cross-referenced to the companion DWR tables. UWMP preparers are also requested to complete a checklist of specific UWMP requirements to assist the DWR review of the submitted UWMP. The completed checklist is included in Appendix A.

2.5 Coordination and Outreach
Coordination with other water suppliers, cities, counties, and community organizations in the region is an important part of preparing the updated UWMP and WSCP. This chapter identifies the agencies and organizations the City sought to coordinate during the preparation of this Plan.

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

Urban retail water suppliers relying on one or more wholesalers for water supply are required to provide these wholesalers with information regarding projected water supply and demand. The City meets regularly with other water purveyors to discuss water supply and demand planning. In particular, the City Agenda Item #8.1:

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meets at least monthly with its water wholesaler, Sonoma Water, and with other Water Contractors who purchase water from Sonoma Water. These monthly meetings occur through the City’s participation in the Sonoma Water Technical Advisory Committee (TAC). The primary mission of the TAC is to provide input and guidance to Sonoma Water regarding technical issues that may have an impact on the Water Contractors (i.e., UWMP coordination, capital projects, operational changes, etc.). Additionally, the City participates in quarterly meetings of the Water Advisory Committee (WAC). The WAC’s objectives are to advise Sonoma Water’s Board of Directors on policy and fiscal matters affecting the Water Contractors.

The City’s participation in the TAC and WAC has been instrumental in coordinating water supply and demand analyses for the preparation of this Plan. As part of the development of this Plan, the City coordinated closely with the other eight Sonoma Water Water Contractors.

The City’s water supply primarily comes from water purchased from Sonoma Water. The City, along with eight other Water Contractors, has a water supply agreement with Sonoma Water for the purchase of Russian River water commonly referred to as the Restructured Water Supply Agreement. The City coordinated the development of its demand projections with members of the SMSWP. Demand projections through 2050 were provided through the Partnership to Sonoma Water, as indicated in Table 2-4.

Table 2-4 Water Supplier Information Exchange (DWR Table 2-4) Wholesale Water Supplier Name
Sonoma County Water Agency
The City’s projected water demands were developed as part of a planning effort in 2025 that was implemented through the SMSWP (i.e., the 2025 Urban Water Management Plan Water Demand Analysis and Water Conservation Measures Update included as Appendix B). The Sonoma Water was provided with the City’s water use projections through this process. The City will continue to coordinate with the Sonoma Water to determine the timing of capital improvement projects that may need to be implemented in order to meet the City’s projected future water demands.

Additionally, as described in more detail in Chapter 7, the City has relied upon the water supply reliability projections provided by Sonoma Water for the purposes of analyzing the reliability of its Russian River water supplies during normal and dry years through 2050.

2.5.2 Coordination with Other Agencies and the Community  CWC §10620
(d)(3) Each urban water supplier shall coordinate the preparation of its plan with other appropriate agencies in the area, including other water suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable.
 CWC §10642
Each urban water supplier shall encourage the active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of both the plan and the water shortage contingency plan…
As part of the development of this Plan, the City coordinated closely with the other eight Sonoma Water Water Contractors. Among other methods, this coordination occurred through regular meetings of the TAC and WAC (see Section 2.5.1). These agencies also coordinated as part of the regional water conservation partnership, the SMSWP. The City also coordinated with the wastewater agency serving the City’s service area, the Sonoma Valley County Sanitation District (SVCSD) as part of the preparation of this Plan. The agencies that were notified by the City during the development of this Plan are listed in Chapter

10. A sample copy of the notices is provided in Appendix C.

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2.5.3 Notice to Cities and Counties
 CWC §10621
(b) Every urban water supplier required to prepare a plan pursuant to this part shall, at least 60 days before the public hearing on the plan required by Section 10642, notify any city or county within which the supplier provides water supplies that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan.

The City provided a 60 Day Notice to the entities and the communities it serves more than 60 days prior to the public hearing it held on June 3, 2026, informing them that the Plan was going to be reviewed and updated. The 60 Day Notice recipients are listed in Chapter 10, and copies of correspondence with the agencies are provided in Appendix C.

The City also sought public participation and notified the public of its intent to adopt its UWMP through a public hearing and notices to members of the community. Additional information on public participation, including information on notifications, is provided in Chapter 10 and in Appendix D.

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Section 3 2025 Urban Water Management Plan
Service Area Description City of Sonoma
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3 SERVICE AREA DESCRIPTION
This section describes the City’s water system and service area, including climate, population, demographics, and land uses to help in understanding various elements of water supply and demand.

3.1 General Description
 CWC §10631
(a) Describe the service area of the supplier…
The City of Sonoma (City) is located approximately 50 miles northeast of San Francisco at the southern end of Sonoma County. The City’s water service area (Figure 3-1) encompasses the city limits, as well as limited properties in the Sonoma County jurisdictional area to the east of the city limits along Thornsberry Road, Lovall Valley Road, Old Winery Road, Nut Tree Lane, East Napa Street, East MacArthur Street, Eighth Street East and Denmark Street, some with outside service area (OSA) agreements with the City. The Sphere of Influence (SOI) includes the City limit area, the Maxwell Farms Regional Park on the northwest of the City limit, and a portion of the mountain area in the north. The Urban Growth Boundary (UGB) dataset represents the nine cities, urban (incorporated) municipality urban growth boundaries within the County of Sonoma. The UGB is a planning tool used to limit growth around a city and promote efficient provision and expansion of city services outside city limits.

VOMWD serves some properties along Junipero Serra Drive and Verano Avenue in the northwest area of the City. The service area is approximately 2.5 square miles and serves primarily residential and commercial customers. Elevations in the existing service area range from approximately 55 to 518 feet above mean sea level (ft msl).

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Figure 3-1 City Location and Service Boundaries
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3.2 Service Area Climate
 CWC §10631
(a) Describe the service area of the supplier, … “climate…”  CWC §10635
(b)(4) Considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.

The City’s service area has a climate that is typical of the Napa and Sonoma County areas, characterized by summers that are dry and warm, and winters that are relatively mild with the bulk of rainfall occurring during this season. Based on data downloaded from the California Irrigation Management System (CIMIS) for 1999 through 2026, most rainfall occurs between November and May (see Table 3-1 and Figure 3-2).

On average, the City receives 21.8 inches of rainfall annually. Maximum daily air temperature averages 68 degrees Fahrenheit (°F) while the minimum daily air temperature averages 42°F.

Table 3-1 Climate Characteristics
Month Min Average
Temp (°F)
Max Average
Temp (°F)
Average
Rainfall
(inches)
ETo
(inches)
January 34.8 56.1 3.6 1.3
February 36.0 59.1 4.1 1.8
March 37.6 61.5 3.0 3.0
April 40.0 65.1 1.5 4.3
May 43.4 69.6 1.0 5.3
June 46.8 75.3 0.5 6.3
July 49.4 78.2 0.3 6.4
August 49.4 78.8 0.2 5.5
September 48.8 79.1 0.2 4.4
October 44.3 74.3 0.9 3.2
November 38.2 63.5 2.1 1.7
December 35.6 55.9 4.4 1.1
Annual 42.0 68.0 21.8 44.3
NOTES:
(a) Climate data from CIMIS Petaluma East Station (144) for the period August 1999 through February 2026
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Figure 3-2 Average Monthly Climatic Conditions
According to the Cal-Adapt tool, future projections for the City’s service area using Localized Constructed Analogs (LOCA) downscaled Coupled Model Intercomparison Project (CMIP5) model indicate an average increase in temperature of 3.3°F for medium emissions (RCP 4.5) models and 4.2°F for high emissions (RCP

8.5) models by 2064 (Figure 3-3).

Figure 3-3 Observed and Forecasted Temperature for the City of Sonoma Source: Cal-Adapt, 2018
Chapter 4 discusses potential climate change impacts on water demands, and Chapters 6 and 7 discuss potential climate change impacts on supplies. Pursuant to the CWC requirements and the 2025 UWMP Guidebook, this Plan incorporates climate change considerations into following relevant sections:
• Chapter 3 Service Area Description;
0 1
2 3
4 5
6 7
Average Monthly Value (inches)
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• Chapter 4 Water Use Characterization;
• Chapter 6 Normal Year Water Supply Characterization
• Chapter 7 Water Supply Reliability Assessment.

In addition, this Plan incorporates the following documents by reference that include information on climate change hazards and mitigation actions that apply to the City service area and its water system:
• Sonoma County Multi-Jurisdictional Hazard Mitigation Plan (2021) • Sonoma Water Local Hazard Mitigation Plan (2024)

3.3 Service Area Population and Demographics
 CWC §10631
(a) Describe the service area of the supplier, including current and projected population … other social, economic and demographic factors affecting the supplier’s water management planning. The projected population estimates shall be based upon data from the state, regional, or local service agency population projections within the service area of the urban water supplier and shall be in five-year increments to 20 years or as far as data is available.

The demographics of the City’s customers include a wide range of income, household size and water demands. Due to the City’s service area being located in the heart of a tourist destination, Sonoma Valley, one factor impacting water use in recent years has been the increase in the number of second homes and vacation rentals. These accounts can have higher water use on average because the sites do not have fulltime owners looking for leaks and managing irrigation water use in accordance with weather patterns.

3.3.1 Future Population Growth
The City’s service area includes pocket areas of outside service area connections located in the Sonoma County jurisdictional area. The historical and current population within the City’s water service area is calculated by adding the population within the City limits, as reported by the California Department of Finance (DOF), and adjusted to account for customers outside the City limits (DOF, 2024; EKI, 2025).

Population projections are based on the City's 2021-2023 Housing Element. The Housing Element household projections project a growth of 311 households over the 8-year period, which aligns and is inclusive of the 30 new households provided by the ABAG projections (ABAG, 2021) over the 10-year period between 2025 and 2035 (EKI, 2025; Appendix B).

The City’s current and projected service area population are shown in Table 3-2 and Figure 3-4 in fiveyear increments through 2050. The City’s service area population was 11,462 in 2025 based on the estimated population in the City of Sonoma of 10,507 from the California Department of Finance population estimates (CA DOF E-5 City/County Population and Housing Estimates, 1/1/2025), plus an additional population of 955 to account for demands served outside of the City boundaries. By 2030, the total population within the City’s service area is expected to be 12,088. It is assumed that the population will remain unchanged from 2030 to 2050 based on the number of new housing units expected to be constructed by 2030 to meet Regional Housing Needs Assessment Requirements is approximately equal to estimated housing units at buildout according to the City’s General Plan.

Table 3-2 Population – Current and Projected (DWR Table 3-1) Year 2025 2030 2035 2040 2045 2050
Population
Served 11,462 12,088 12,088 12,088 12,088 12,088
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Figure 3-4 Population – Historic and Projected

3.3.2 Future Employment Growth
Current and projected service area employment estimates from 2025 through 2050 are based on ABAG and MTC’s Plan Bay Area 2050 (ABAG, 2021; EKI, 2025; Appendix B). As shown in Table 3-3, an average employment growth rate of approximately 0.11% per year is expected.

Table 3-3 Employment – Current and Projected
Year 2025 2030 2035 2040 2045 2050
Service Area
Employment 7,871 7,872 7,873 7,943 8,014 8,084
NOTES: Projections per ABAG, 2021

3.3.3 Other Social, Economic, and Demographic Factors
Demographics for the City are summarized in Table 3-4. The same data are also provided for the state of California as a whole. Data were obtained from the U.S. Census Bureau QuickFacts website (U.S. Census, 2026). Relative to the rest of California, the City’s population is older and less racially diverse. Educational attainment and median household income in City are higher than for the state as a whole, and the percentage of the population below the poverty level is comparatively lower. 0 2,000
4,000
6,000
8,000
10,000
12,000
14,000
2010 2015 2020 2025 2030 2035 2040 2045 2050
Population
Year
Actual Population Population Forecast
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Section 3 2025 Urban Water Management Plan
Service Area Description City of Sonoma
PUBLIC DRAFT | May 2026
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Table 3-4 Demographic and Housing Characteristics, 2020-2024 Demographics Sonoma California
Age and Sex
Persons under 5 years 2.3% 5.3%
Persons under 18 years 14.1% 21.3%
Persons 65 years and older 34.3% 16.5%
Female persons 53.9% 50.1%
Race and Hispanic Origin
White alone 82.6% 69.8%
Black or African American alone 1.2% 6.4%
American Indian and Alaska Native alone 0.4% 1.8%
Asian alone 2.0% 17.0%
Native Hawaiian and Other Pacific Islander alone 1.3% 0.5% Two or More Races 8.4% 4.4%
Hispanic or Latino 12.5% 40.8%
White alone, not Hispanic or Latino 80.1% 33.6%
Families & Living Arrangements
Persons per household 1.97 2.84
Living in same house 1 year ago, percent of persons age 1 year+ 86.8% 89.2% Language other than English spoken at home, age 5 years+ 12.8% 44.1% Education
High school graduate or higher, persons age 25 years+ 95.7% 84.7% Bachelor’s degree or higher, persons age 25 years+ 51.2% 37.1% Income & Poverty
Median Household Income (2024 dollars) $98,527 $96,334
Per capita income in past 12 months (2024 dollars) $73,346 $47,977 Persons in poverty 10.4% 11.8%
NOTES: U.S. Census Bureau, 2026.

3.4 Land Uses within Service Area
 CWC §10631
(a) ...The description shall include the current and projected land uses within the existing or anticipated service area affecting the supplier’s water management planning. Urban water suppliers shall coordinate with local or regional land use authorities to determine the most appropriate land use information, including, where appropriate, land use information obtained from local or regional land use authorities… Agenda Item #8.1:

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Service Area Description City of Sonoma
PUBLIC DRAFT | May 2026
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General Plans are required by State law to guide land use and development within cities (California Government Code [CGC] §65030.1). Figure 3-5 is excerpted from the City’s 2020 General Plan and shows that the most prevalent land use in the City is single-family residential, with about 43% of all land in Sonoma designated primarily for detached homes. Land for public uses, such as school, park, and hospital facilities, comprises the next largest category, with about 24% of the City and Sphere of Influence, while areas for multi-family housing account for roughly 17% of total land area. Areas designated for commercial uses, which also allow multi-family dwellings on site, encompass about 10% of the City and Sphere of Influence (City of Sonoma, 2006). The City’s General Plan is currently in the process of being updated.

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Section 3 2025 Urban Water Management Plan
Service Area Description City of Sonoma
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Figure 3-5 City Service Area Land Use
(Excerpted from the City of Sonoma General Plan [City of Sonoma, 2006]) Agenda Item #8.1:

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Section 3 2025 Urban Water Management Plan
Service Area Description City of Sonoma
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3.5 Water Distribution System
The water distribution system contains three pressure zones that are each served by one or more storage tanks. Most of the system is contained within Zone 1. Potable water from Sonoma Water is delivered to two Sonoma Water tanks located north of the distribution system (referred to as “Sonoma Tank 1” and “Sonoma Tank 2”), which feed Zone 1 via a 16-inch aqueduct. The distribution system is shown in Figure 3-6.

The principal water mains in the distribution system range in diameter from 4 to 14 inches. Most of the distribution grid piping in the older sections of the City range in diameter from 1-1/2 to 4 inches, while the newer areas are served by pipes 6 to 8 inches in diameter. City maintained water mains are asbestoscement (AC), polyvinylchloride (PVC), polyethylene (PE), ductile iron (DI), and steel (STL). Approximately half of the water system pipelines are AC pipe. There are three City-owned welded steel storage tanks within the distribution system, including the Napa Street Tank (2.0 million gallon [MG] capacity), the Thornsberry Tank (0.5 MG capacity) and the Norrbom Tank (3.0 MG capacity), each serving one of the three zones in the distribution system. Figure 3-6 also shows the locations of the existing groundwater supply wells.

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Section 3 2025 Urban Water Management Plan
Service Area Description City of Sonoma
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Figure 3-6 City Water System Map
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Section 4 2025 Urban Water Management Plan
Water Use Characterization City of Sonoma
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4 WATER USE CHARACTERIZATION
 CWC §10635
(a) Every urban water Supplier shall include, as part of its urban water management plan, an assessment of the reliability of its water service to its customers during normal, dry, and multiple dry water years. This water supply and demand assessment shall compare the total water supply sources available to the water supplier with the longterm total projected water use over the next 20 years, in five-year increments, for a normal water year, a single dry water year, and a drought lasting five consecutive water years. The water service reliability assessment shall be based upon the information compiled pursuant to Section 10631, including available data from state, regional, or local agency population projections within the service area of the urban water supplier.  CWC §10631
(d)(1) For an urban retail water supplier, quantify, to the extent records are available, past and current water use, over the same five-year increments described in subdivision (a), and projected water use, based upon information developed pursuant to subdivision (a), identifying the uses among water use sectors, including, but not necessarily limited to, all of the following…
(d)(2) The water use projections shall be in the same five-year increments described in subdivision (a). (d)(4)(A) Water use projections, where available, shall display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans identified by the urban water supplier, as applicable to the service area.
(d)(4)(B) To the extent that an urban water supplier reports the information described in subparagraph (A), an urban water supplier shall do both of the following: (i) Provide citations of the various codes, standards, ordinances, or transportation and land use plans utilized in making the projections. (ii) Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.

This section describes and quantifiesthe City’s historical, current, and projected water uses through 2050.

For the purposes of this UWMP, the terms “water use” and “water demand” are used interchangeably.

4.1 Non-Potable Versus Potable Water Use
Potable and non-potable water uses are accounted for separately herein. Potable uses are served by the City’s potable water delivery system. Potable water deliveries comply with Title 22 Drinking Water Standards. Non-potable water uses include recycled and untreated raw water deliveries, such as tertiary treated recycled water or surface or groundwater supplies that do not meet potable drinking water standards. Uses of potable versus non-potable water are clearly distinguished in the tables included in this chapter.

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

Demand within the City’s water service area is measured using water meters installed at each customer account. Records of current and historical water use at each account are maintained by the City. Demand within the City’s service area is tracked and reported for the following sectors:
• Single Family Residential: Attached or detached dwelling units that are individually metered. • Multi-Family Residential: Two or more dwelling units served by a common water meter. Water use is predominately for indoor water uses; irrigation water use for multiple family sites is usually separately metered and listed in the irrigation sector. • Commercial/Institutional: Includes commercial and institutional customers. • Other: Includes non-revenue water including unbilled unmetered consumption such as fire flow, and hydrant meters.
• Landscape: Water meters used exclusively for irrigation.

The City’s total water demand is the sum of potable water demands and recycled water demands within its service area. The City’s total water demand includes water consumed by metered accounts in the service area (metered water use), authorized but unbilled uses, and water losses within the system. The latter accounts for physical losses within the distribution system caused by seepage, leaks, and spills, while the former accounts for accounting losses due to meter inaccuracies, data handling errors, and unauthorized consumption.

4.3 Past and Current Water Demand
 CWC §10631
(d)(1) For an urban retail water supplier, quantify, to the extent records are available, past and current water use… based upon information developed pursuant to subdivision (a), identifying the uses among water use sectors… Agenda Item #8.1:

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Water Use Characterization City of Sonoma
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Past water uses inform an understanding of water use trends which are crucial for developing water use projections. Table 4-1 shows the 2025 actual water use by sector while Figure 4-1 shows historical and current water use from 2021 through 2025, and Figure 4-2 shows gallons per capita per day (GPCD) from 2010 through 2025. Total water use has fluctuated in the City since 2010. These trends were likely influenced by the historic drought conditions, mandatory state-wide restrictions in urban water use imposed by the SWRCB, and local drought response. In addition, the COVID-19 pandemic resulted in more customers working from home rather than commuting, resulting in higher demands in 2020 and 2021.

Total and per capita water use has remained lower than pre-drought conditions, with a slight increase after 2023, indicating a degree of rebound following the drought.

Recycled water accounted for 1% of water use in 2025. All recycled water is currently used for landscape irrigation. Detailed discussion of City’s recycled water program is provided in Section 6.5.

Table 4-1 2025 Actual Total Uses for Potable and Non-Potable Water (DWR Table 4-1) Use Type Additional Description Level of Treatment
When Delivered
2025 Actual Water
Use Volume (AF)
Single Family Potable 999
Multi-Family Potable 288
Commercial Commercial/Institutional Potable 365
Landscape Potable 136
Other (optional) (c) Potable 0.2
Distribution System
Water Loss Non-revenue water (b) Potable 169
Landscape Recycled Water system Non-Potable 21
Subtotal Potable 1,957
Subtotal Non-Potable 21
Total 1,978
NOTES:
(a) Volumes are in units of AF.
(b) Losses are the “water losses” value calculated in the City's Audited AWWA Water Loss Worksheets, reported on a calendar year basis. The audited AWWA Worksheet for 2025 is not yet available, therefore average losses from 2021-2024 were used. Losses for 2025 represent total non-revenue water, inclusive of unbilled consumption. (c) Other non-revenue water includes unbilled unmetered consumption such as fire flow, and hydrant meters.

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Figure 4-1 Total Uses for Potable and Non-Potable Water - 2021 – 2025 Actual Figure 4-2 Historical Per Capita Water Use
0 500
1,000
1,500
2,000
2,500
2010201120122013201420152016201720182019202020212022202320242025 Water Use (Acre-Feet)
Year
Non-Revenue Water
Recycled
Other
Irrigation
Commercial
Multi-family
Single Family
0 20
40 60
80 100
120
140
160
180
2010 2012 2014 2016 2018 2020 2022 2024 2026
Per Capita Water Use (GPCD)
Year
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4.4 Distribution System Water Loss
 CWC §10631(3)
(A) The distribution system water loss shall be quantified for each of the five years preceding the plan update, in accordance with rules adopted pursuant to Section 10608.34. (B) The distribution system water loss quantification shall be reported in accordance with a worksheet approved or developed by the department through a public process. The water loss quantification worksheet shall be based on the water system balance methodology developed by the American Water Works Association. (C) In the plan due July 1, 2021, and in each update thereafter, data shall be included to show whether the urban retail water supplier met the distribution loss standards enacted by the board pursuant to Section 10608.34.

Water loss is the sum of apparent and real losses. Apparent loss is associated with metering inaccuracies, billing and administrative errors, authorized unmetered uses (e.g., system flushing and firefighting), and unauthorized uses. Real loss is associated with physical loss of water through line breaks, leaks and seeps, and overflows of storage tanks. Since 2016, urban retail water suppliers have been required under CWC §10608.34 and CCR §638.1 et seq. to quantify distribution system water losses using the American Water Works Association (AWWA) Free Water Audit Software (referred to as “water loss audit reports”).

Table 4-2 summarizes the water loss audit reports submitted to DWR for the City since 2021. The water loss audit reports are available through DWR’s Water Use Efficiency Data. 1 Table 4-2 Water Loss Audit Reporting Water Code Section 10631(d)(3)(A) (DWR Table 4-5) PWS ID #
(reported in DWR
Table 2-1)
Reporting Period Submitted to DWR Water Loss Audit
Program (yes/no)
CA4910012 2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
Notes: Water Loss Audit Reports can be found at the following links:
2020:
https://wuedata.water.ca.gov/public/awwa_uploads/2389463126/Sonoma%20City%20of%20%2D%20Validated% 20Water%20Audit%20CY2020.xls
2021:
https://wuedata.water.ca.gov/public/awwa_uploads/2177152335/Sonoma%20AWWA%20Audit%20CY%202021% 5FValidated.xls
2022:
https://wuedata.water.ca.gov/public/awwa_uploads/2436429679/City%20of%20Sonoma%20CY2022%20%2D%20 Validated%20Water%20Audit.xlsx
2023:
https://wuedata.water.ca.gov/public/awwa_uploads/2911176383/City%20of%20Sonoma%20CY2023%20%2D%20 Water%20Loss%20Audit%20Validated.xlsx
2024:
https://wuedata.water.ca.gov/public/awwa_uploads/2560712516/Sonoma%20CY2024%20Final%20Audit.xlsx 1 DWR’s Water Use Efficiency Data Portal: https://wuedata.water.ca.gov/awwa_plans Agenda Item #8.1:

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In 2022, the SWRCB adopted water loss performance standards for urban retail water suppliers, aiming for a significant long-term reduction in real losses. Effective starting in 2023, the SWRCB established individual volumetric standards for each urban retail water supplier, calculated to reflect the life-cycle cost-effective level of water loss based on specific system characteristics. While annual reporting is ongoing, suppliers will be required to start meeting individual volumetric loss standards over a three-year period, with full compliance required by January 1, 2028. These standards constitute the water loss component of the MCCWL regulatory framework (SWRCB, 2022).

CWC §10631 (3)(c) requires that this UWMP demonstrate whether the City has met the distribution loss standards enacted by the SWRCB pursuant to CWC §10608.34. Table 4-3 demonstratesthe City’s progress towards meeting the 2028 water loss standard. Based on the most recent AWWA Water Loss Audit, the City’s real water loss and apparent water loss are both below the SWRCB standards. Therefore, the City currently meets the 2028 water loss standards.

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Table 4-3 Progress Towards 2028 Water Loss Standard (DWR Table 4-6) PWS ID #
(reported
in DWR
Table 2-1)
Did the
SWRCB
Calculate a
Water Loss
Standard
for this
PWS? (y/n)
If no,
Supplier
will not
complete
this row.

State
Water
Board
2028
Real
Water
Loss
Standard
per Unit
per day
Units for
Real Water
Loss
Number of
Units
(Connections
or Miles
corresponding
with units
selected)
Most
Recent
AWWA
Water
Loss
Audit.

Volume
of Total
Real
Loss
(from
AWWA
Water
Loss
Audit)
Most
Recent
AWWA
Water
Loss
Audit,
Real
Water
Loss
Per
Unit
per
Day
State
Water
Board
2028
Apparent
Water
Loss
Standard
per Unit
per Day
Units for
Apparent
Water Loss
Number of
Connections
Most
Recent
AWWA
Water
Loss
Audit,
Volume
of Total
Apparent
Loss
(from
AWWA
Water
Loss
Audit)
Most
Recent
AWWA
Water
Loss
Audit,
Apparent
Water
Loss Per
Unit per
Day
CA4910012 Yes 27.6
Gallons per
Service
Connection
per Day
(GPSCD)
4,520 121.065 23.9 5.8
Gallons per
Service
Connection
per Day
(GPSCD)
4,520 26.663 5.3
NOTES: Most recent AWWA Water Loss Audit is for CY 2024.

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4.5 Projected Water Demand
The City’s water demand projections were prepared as part of the 2025 Water Demand Analysis and Water Conservation Measures Update (Water Demand Report; EKI, 2025), which is provided in Appendix B and documents in detail the methods and assumptions used to project future water demand.

4.5.1 Basis of Demand Projections
As described in more detail below and in the Water Demand Report (Appendix B), projected potable water demands for the City were estimated by:

1. Applying an estimated growth rate to accounts within each water use sector based on projected population and employment growth rates,

2. Evaluating and selecting water demand factors for each water use sector based on a review of recent average per-account water use representing three scenarios,

3. Estimating future passive savings using the Alliance for Water Efficiency (AWE) Water Conservation Tracking Tool (AWE model), and

4. Calculating estimated future water demand that incorporates the anticipated account.

This methodology is consistent with CWC §10631(d)(4)(A), which requires that “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.” The assumptions used as the bases for demand projections were developed in close coordination with the City and reflect a land-use based approach consistent with community planning within the City. Recycled water demand is expected to remain unchanged from 2025 levels.

4.5.2 Water Savings from Codes, Standards, Ordinances, or Transportation and Land Use Plans
 CWC §10631(d)(4)
(A) Water use projections, where available, shall display and account for the water savings estimated to result from adopted codes, standards, ordinances, or transportation and land use plans identified by the urban water supplier, as applicable to the service area.
(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.
“Passive conservation” refers to water savings resulting from actions and activities that do not depend on direct financial assistance (e.g., rebate) programs from the City. These savings result primarily from (1) the natural replacement of existing plumbing fixtures with water-efficient models required under current plumbing code standards, and (2) the installation of water-efficient fixtures and equipment in new buildings and retrofits as required under California Green Building Standards Code (CALGreen) Building Code Standards. The water use projections discussed in Section 4.5.3 include water savings associated with these codes and standards. Specifically, as shown in Table 4-4 and its associated chart, passive water savings for the City were calculated using the Alliance for Water Efficiency (AWE) Water Conservation Tracking Tool (referred to as the AWE model; AWE, 2021). The AWE model is an industry standard tool Agenda Item #8.1:

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that incorporates historical population, residential building stock, number of accounts, and projected population and account growth to estimate future passive savings. More information regarding the passive savings estimated using the AWE model can be found in Appendix B.

While projections account for passive savings, the City has taken a more conservative approach to demand projections by not accounting for savings associated with future active conservation measures. However, savings associated with all past active conservation efforts are embedded into the demand projections.

This approach is conservative, as it projects the highest level of probable demand. Active conservation thus increases resiliency for City customers by further increasing efficient utilization of available supplies.

Table 4-4 Projected Total Water Demand and Projected Passive and Active Water Conservation Water Conservation Type 2030 2035 2040 2045 2050
Baseline Projected Potable Water Demand 2,230 2,231 2,237 2,243 2,248 Passive Water Conservation -61 -81 -94 -104 -112
Total Potable Water Demand 2,169 2,151 2,143 2,138 2,137 NOTES:
(a) Volumes are in units of AF.
(b) Methodology described in EKI, 2025, also provided in Appendix B. (c) The City also implements a number of active conservation programs, as discussed in Chapter 9 and Appendix B. (d) Totals may not sum due to rounding.

4.5.3 Projected Total Water Demand
Projected customer water demands for years 2030 through 2050 are presented in Table 4-5. These demands are broken down by sector, including water loss and recycled water. Recycled water demands are further discussed in Section 6.5. As affirmed in Table 4-6, both future water savings (Section 4.5.2) and lower income residential demands (Section 4.5.4) are included in the projections of future water use.

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Table 4-5 Total Uses of Potable and Non-Potable Water – Projected (DWR Table 4-2) Use Type Additional
Description
Level of
Treatment
When
Delivered
2030 2035 2040 2045 2050
Single Family Potable 1,088 1,078 1,071 1,066 1,063
Multi-Family Potable 280 275 272 270 268
Commercial Potable 343 339 338 338 339
Institutional/
Governmental Potable 150 152 153 154 155
Landscape Potable 129 129 130 131 132
Distribution
System Water
Loss
NonRevenue
Water
Potable 179 179 179 179 180
Landscape
Recycled
Water
System
Non-Potable 21 21 21 21 21
Subtotal
Potable 2,169 2,152 2,143 2,138 2,137
Subtotal NonPotable 21 21 21 21 21
Total 2,190 2,173 2,164 2,159 2,158
NOTES:
(a) Volumes are in units of AF
(b) Projected water demands were estimated using methodology described in Appendix B and incorporate passive conservation savings, as described in Section 4.5.2.
(c) "Distribution System Water Loss” represents all non-revenue water, including real losses, apparent losses, and unbilled, unmetered consumption.

Table 4-6 Inclusion in Water Use Projections (DWR Table 4-3) Are Future Water Savings Included in Projections? Yes
If "Yes" to above, state the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.

Refer to Section 4.5.2 and
Table 5-4 of Appendix B.

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.

Refer to Section 4.5.4
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4.5.4 Water Use by Lower Income Households
 CWC §10631.1
(a) The water use projections required by Section 10631 shall include projected water use for single-family and multifamily residential housing needed for lower income households, as defined in Section 50079.5 of the Health and Safety Code, as identified in the housing element of any city, county, or city and county in the service area of the supplier.
(b) It is the intent of the Legislature that the identification of projected water use for single-family and multifamily residential housing for lower income households will assist a supplier in complying with the requirements under Section 65589.7 of the Government Code to grant a priority for the provision of service to housing units affordable to lower income households.

As indicated in Table 4-6, water use projections presented in Section 4.5.3 include projected water use by lower income households. A lower income household is defined under California Health and Safety Code §50079.5(a) to be 80% of income, adjusted for family size. Based on Census data for the City of Sonoma, the 80% of the median household income figure is approximately $78,820. 2 Census data also indicates that currently, between 36% and 52% of households in the City of Sonoma earn less than 80% of the median household income. The Final Regional Housing Needs Allocation (RHNA) for the San Francisco Bay Area (ABAG, 2025) was used to estimate the proportion of new lower income households anticipated within the City. Based on ABAG (2025) data for the City of Sonoma, new lower income households are estimated to comprise approximately 42% of the total new households. Given that the estimated percent of current and new lower income households are similar, demand for lower income households is based on 42% of the total single-family and multi-family residential projected water uses, as shown in Table 4-5.

Table 4-7 Projected Water Use for Lower Income Households Lower-Income Water
Demand Sector 2030 2035 2040 2045 2050
Single Family Residential 457 453 450 448 446
Multi-Family Residential 118 116 114 113 113
Total 575 569 564 561 559
NOTES: Volumes are in units of AF.

4.5.5 Characteristic Five-Year Water Use
 CWC §10635
(b) Every urban water supplier shall include, as part of its urban water management plan, a drought risk assessment for its water service to its customers as part of information considered in developing the demand management measures and water supply projects and programs to be included in the urban water management plan. The urban water supplier may conduct an interim update or updates to this drought risk assessment within the five-year cycle of its 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. 2 US Census Bureau American Fact Finder for City of Sonoma using 2020-2024 American Community Survey 5-Year Estimates (in 2024 dollars). Median income estimate is $98,527.

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In accordance with CWC §10635(b)(3), UWMPs must provide a five-year Drought Risk Assessment. As a first step, DWR suggests that water suppliers estimate their unconstrained water demand for the next five years (2026-2030). Unconstrained water demand is water use in the absence of drought water use restrictions. These numbers can then be adjusted to estimate the five-years’ cumulative drought effects.

The Drought Risk Assessment presented in Chapter 7 accounts for this increase in unconstrained water demand. Table 4-8 shows unconstrained demands for 2026-2030, which is assumed to be the same under normal and dry year scenarios.

Table 4-8 Characteristic Five-Year Water Use (AF)
2026 2027 2028 2029 2030
2,020 2,063 2,105 2,148 2,190
NOTES:
(a) Units are in AF.
(b) The table shows unconstrained demand (i.e., demand in the absence of drought water use restrictions).

The Drought Risk Assessment must include a consideration of climate change impacts on demand. Hotter and drier weather may lead to an increased demand in landscape irrigation. The methodology used to develop demand projections herein considers the impacts of climate change on projected demands.

California experienced a historic drought between 2011-2017. In 2014, Governor Brown issued Executive Order B-26-14 declaring a Drought State of Emergency and requested all Californians to voluntarily reduce water use by 20%. In 2015, the State Water Resources Control Board implemented emergency conservation regulations that, among other things, required water agencies to reduce their water use and prohibited certain types of water uses. As a result, the City experienced an overall decrease in demands during the historic drought, most significantly during 2015. As explained further in Appendix B, the demand factors evaluated multiple drought periods, including 2011-2013, 2014-2017, and 2021-2023, as well as rebound period between droughts. Thus, the periods used to develop the demand projections reflect conditions representative of the hotter, drier weather expected as a result of climate change.

4.6 Water Use Sectors Not Included in Demand Projections Historical and projected water demands for the water use sectors described in CWC §10631(d)(1)(G) through (I) and listed below were not included in City’s water demand calculations because they are not applicable to City:
• Sales to other agencies
• Saline water intrusion barriers, groundwater recharge, or conjunctive use, or any combination thereof
• Industrial water use
• Agricultural water use

4.7 Coordinating Water Use Projections
 CWC § 10631(h)
An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five-year increments to 20 years or as far as data is available.

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City purchases water from Sonoma Water. As part of the coordination effort for the UWMP, and in compliance with CWC §10631(h), City supplied the Sonoma Water with its water demand projections through 2050, as described in Section 2.5.

4.8 Urban Water Use Objective
 CWC § 10609.20
(a) Each urban retail water supplier shall calculate its urban water use objective no later than January 1, 2024, and by January 1 every year thereafter.
(b) The calculation shall be based on the urban retail water supplier’s water use conditions for the previous calendar or fiscal year.
 CWC § 10609.22
(a) An urban retail water supplier shall calculate its actual urban water use no later than January 1, 2024, and by January 1 every year thereafter.
(b) The calculation shall be based on the urban retail water supplier’s water use for the previous calendar or fiscal year.
 CWC § 10609.24
(a) An urban retail water supplier shall submit a report to the department no later than January 1, 2024, and by January 1 every year thereafter. The report shall include all of the following:
(1) The urban water use objective calculated pursuant to Section 10609.20 along with relevant supporting data. (2) The actual urban water use calculated pursuant to Section 10609.22 along with relevant supporting data. (3) Documentation of the implementation of the performance measures for CII water use. (4) A description of the progress made towards meeting the urban water use objective. (5) The validated water loss audit report conducted pursuant to Section 10608.34. (b) The department shall post the reports and information on its internet website. (c) The board may issue an information order or conservation order to, or impose civil liability on, an entity or individual for failure to submit a report required by this section.

In July 2024, California enacted the MCCWL regulation (implementing SB 606 and AB 1668) to support long-term water conservation and drought resilience. These regulations establish annual UWUOs for water suppliers and introduce Performance Measures for CII water users.

The UWUO is a water budget-based approach to water use efficiency unique to each urban water supplier and consists of the following components: (1) residential indoor water standard, (2) residential outdoor water budget, (3) CII landscape outdoor water use standard (for landscapes with dedicated irrigation meters, (4) water loss standard, (5) variance, and (6) bonus. Suppliers will need to assess whether they meet their UWUO collectively (i.e., they are not required to comply with the individual standards if they meet the overall UWUO). Compliance with UWUOs is required beginning January 2027. Per the MCCWL regulation, over the next 25 years, the water efficiency standards for residential indoor and outdoor water use as well as CII outdoor water use will become increasingly stringent.

The state standards underlying the residential indoor, residential outdoor, and CII outdoor components of the UWUO will become increasingly stringent over time. As a result, compliance is expected to require Agenda Item #8.1:

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continued reductions in water use beyond those achieved under the SB X7-7 framework. 3 Urban retail water suppliers are required to report annually to the State Water Resources Control Board on water use relative to their UWUOs. The City submits UWUO compliance data through the Department of Water Resources’ Water Use Efficiency Data portal.
4 As part of the 2025 Water Demand Analysis and Water
Conservation Measure Update prepared for the City, the City’s UWUO compliance was forecasted using the following data sources and assumptions (EKI, 2025; Appendix B):
• Projected population, water use components subjective to the objectives (e.g., residential water use and dedicated irrigation water use), and real water loss • Decreasing Objective water use standards through 2040 • Residential landscape area based on values reported in the City’s FY 2023-24 UWUO Annual Report and increasing proportional to population projections • Existing (2025) CII landscape area on DIMs irrigated with potable water estimated from projected 2025 water use assuming a LEF of 0.80
• Future CII landscape area on DIMs increasing proportionally with City’s irrigation and recycled water accounts
• CII landscape area on DIMS irrigated with recycled water (i.e., Special Landscape Area) estimated from a water use of 55 AFY assuming a LEF of 1.0.

The results of the analysis, described further in Section 5.6 of Appendix B, indicate that the City is anticipated to comply with its UWUOs through 2035, but in 2040 is anticipated to be slightly above its objective as shown in Table 4-9.

Table 4-9 Current and Projected Urban Water Use Objectives Compliance Year
Water Demand
Subject to UWUO
Compliance (b) (c)
UWUO Projections
(b)
Reduction
Required
2025 (d) 1,628 1,995 -
2030 1,723 1,966 -
2035 1,709 1,749 -
2040 1,700 1,686 1%
NOTES:
(a) Service area population is detailed in Table 3-2.
(b) Volumes are in units of AF.
(c) Water demand subject to UWUO compliance includes single family, multi-family water, irrigation, and water loss sectors and is detailed in Appendix B. (d) 2025 uses actual data as reported on the Water Use Efficiency Data Portal. 3 Under the MCCWL regulation, the SB X7-7 target serves as a backstop on the UWUO. If a supplier’s UWUO exceeds its SB X7-7 target, its UWUO becomes its SB X7-7 target. 4 DWR’s Water Use Efficiency Data Portal: https://wuedata.water.ca.gov/uwuo_plans Agenda Item #8.1:

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5 SB X7-7 BASELINE, 2020 TARGET, AND 2025 REPORTING
 CWC §10608.24 (b)
Each urban retail water supplier shall meet its urban water use target by December 31, 2020.  CWC §10608.28
(a) An urban retail water supplier may meet its urban water use target within its retail service area, or through mutual agreement, by any of the following:
(1) Through an urban wholesale water supplier.
(2) Through a regional agency authorized to plan and implement water conservation, including, but not limited to, an agency established under the Bay Area Water Supply and Conservation Agency Act (Division 31 (commencing with Section 81300)).
(3) Through a regional water management group as defined in Section 10537. (4) By an integrated regional water management funding area. (5) By hydrologic region.
(6) Through other appropriate geographic scales for which computation methods have been developed by the department.
(b) A regional water management group, with the written consent of its member agencies, may undertake any or all planning, reporting, and implementation functions under this chapter for the member agencies that consent to those activities. Any data or reports shall provide information both for the regional water management group and separately for each consenting urban retail water supplier and urban wholesale water supplier.

The Water Conservation Act of 2009, also known as SB X7-7, required that urban retail water suppliers 5 reduce their baseline per capita water use by 20% by 2020. Instead of, or in addition to, individual water use targets, urban water retail suppliers may plan, comply, and report on SB X7-7 requirements on a regional basis as part of a “Regional Alliance.” As described in Section 2.5.1, the City is one of nine Water Contractors to the Sonoma Water for purchase of Russian River water supply. As such, the Water Contractors formed a regional alliance in 2011 under the provisions of SB X7-7 because they are recipients of water from a common wholesale water supplier.

The membership of the Alliance is consistent with that of a previously established water conservation regional partnership of eight Water Contractors, known as the SMSWP. This regional group, which collaborates on regional water conservation efforts, formed a Regional Alliance for the purposes of meeting regional water use targets. The members of the North Marin-Sonoma Alliance include: the City, North Marin Water District, City of Santa Rosa, Town of Windsor, City of Rohnert Park, City of Cotati, City of Petaluma, Marin Municipal Water District, and VOMWD6 .

As shown in Table 5-1, the Alliance was in full compliance with the SB X7-7 2020 target. Detailed information on how the targets were calculated can be found in the 2020 UWMP. 5 CWC §10608.12 defines an urban retail water supplier as “a water supplier, either publicly or privately owned, that directly provides potable municipal water to more than 3,000 end users or that supplies more than 3,000 acre-feet of potable water annually at retail for municipal purposes.” 6 The letter approving the City’s membership in the regional Alliance is available at the following link:
http://www.savingwaterpartnership.org/wp-content/uploads/20x2020-regional-alliance-agreement.doc.pdf.

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Table 5-1 SB X7-7 2020 Target Progress (DWR Table 5-1)
Was Supplier part of
a merger or
consolidation since
2020?
Regional Alliance
Target or Individual
Target?
2020 Target Actual 2020
GPCD
Did Supplier
Achieve Targeted
Reduction for
2020?
No Regional Alliance
Target
129 113 Yes
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6 NORMAL YEAR WATER SUPPLY CHARACTERIZATION
 CWC §10631(b) A plan shall be adopted in accordance with this chapter that shall do all of the following:

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).

This chapter describes the City’s current and potential water supplies, as well as assessment of the energy intensity used to operate the City’s treatment and distribution systems. The City’s water supplies currently come from a combination of imported water from Sonoma Water and, to a lesser degree, local groundwater pumped by the City from within and just north of the boundary of the Sonoma Valley Subbasin of the Napa-Sonoma Valley Groundwater Basin California Department of Water Resources [DWR] Basin No. 2-2.02. Each water supply is described further in the following sections.

6.1 Purchased Water
 CWC §10631(h)
A plan shall be adopted in accordance with this chapter and shall do all of the following:

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

6.1.1 Sonoma Water Surface Water Supply
The City receives its primary water supply from Sonoma Water’s transmission system (Figure 6-1) which provides treated water purchased from Sonoma Water’s Russian River Project. The Russian River flows are augmented by Pacific Gas and Electric’s (PG&E’s) Potter Valley Project (PVP), which diverts a portion of the Eel River flows to the East Fork of the Russian River. Water is diverted and extracted from the stretch of the Russian River located just upstream of Wohler Bridge via six radial wells known as “Ranney collectors.” The diverted river water percolates through sand and gravel and only needs the addition of chlorine to meet drinking water quality standards. Although the water extracted via Ranney collectors does percolate through the ground, due to the connection to the surface water source, this diversion is considered and is permitted as a surface water supply under existing surface water rights to the Russian River and Dry Creek water, described further in Section 6.1.2 (Sonoma Water, 2016). As discussed further under Section 6.2, Sonoma Water supply also includes a relatively small amount of groundwater from groundwater supply wells located in the central Santa Rosa Plain Subbasin (Sonoma Water, 2016).

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Figure 6-1 Sonoma Water Service Area and Water Transmission System Facilities Agenda Item #8.1:

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The City, along with other Sonoma Water contractors, signed the Restructured Agreement for Water Supply (Agreement) in 2006. The Agreement provides for the financing, construction, and operation of diversion facilities, transmission lines, storage tanks, booster pumps, conventional wells, and appurtenant facilities. As described in Section 3.1 of this Agreement, Sonoma Water:
…shall deliver to each Water Contractor [i.e., each signatory to the Agreement] at the points of delivery hereinafter set forth such quantities of water as the Water Contractor shall from time to time require at such rates of flow as are necessary to meet its peak day’s demand, subject to the following:
(a) Sonoma Water shall not be obligated to deliver water in excess of the following:

Water Contractor/ Aqueduct Average Daily Rate of
Flow During Any Month
Annual Amount During Fiscal
Year (Excluding Surplus Water)
Sonoma From Sonoma Aqueduct 6.3 million gallons per day 3,000 acre-feet

6.1.2 Sonoma Water Surface Water Rights
As described in Sonoma Water’s 2025 UWMP, currently, four water rights permits (Permits 12947A, 12949, 12950, and 16596) issued by the SWRCB authorize Sonoma Water to store up to 122,500 acre-feet per year (AFY) of water in Lake Mendocino and up to 245,000 AFY of water in Lake Sonoma, and to divert or redivert up to 180 cubic feet per second (cfs) of water from the Russian River with a limit of 75,000 AFY (Sonoma Water, 2026). The permits also establish minimum instream flow requirements for fish and wildlife protection and recreation. These minimum instream flow requirements vary based on the hydrologic classifications of normal, dry, and critical water supply conditions as defined by Sonoma Water’s water rights permits and SWRCB Decision 1610, adopted in 1986, and as modified by Temporary Urgency Change Petitions (TUCPs) filed by Sonoma Water.

The minimum instream flow requirements over the summer period have been adjusted as needed under the TUCP process since 2010 to comply with the 2008 Russian River Biological Opinion and now its successor, the 2025 Russian River Biological Opinion (described in Chapter 7). While Sonoma Water follows the minimum instream flow schedule outlined in Decision 1610 for the remainder of the year, the hydrologic index of Decision 1610 (calculated based on cumulative flow into Lake Pillsbury in the Eel River watershed) was developed during different operations of the PVP. Therefore, Sonoma Water has been filing TUCPs biannually to request that Lake Mendocino storage thresholds—which are more representative of water supply conditions in the Russian River System— be used as the hydrologic index for determining minimum instream flow requirements. As discussed in its 2025 UWMP, Sonoma Water assumes it will continue to operate under storage thresholds at Lake Mendocino. Minimum instream flow requirements for the Russian River and Dry Creek are met by releases from Coyote Valley Dam and Warm Springs Dam (Sonoma Water, 2026). Potential supply constraints are discussed in more detail in Chapter

7. 6.1.3 Sonoma Water Groundwater Supply
Sonoma Water pumps a portion of its supply from the Santa Rosa Plain Subbasin of the Santa Rosa Valley Basin (DWR Basin # 1-55.01). Groundwater is used primarily as a drought period supply, or when Russian River supplies are otherwise constrained (Sonoma Water, 2026). In 2025, no groundwater was used to meet retail demands. In the future, groundwater is planned to continue to be used as a drought supply or Agenda Item #8.1:

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when Russian River supplies are otherwise constrained (Sonoma Water, 2026). Sonoma Water’s groundwater supply is discussed further in Section 6.2.

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

The City’s water supply is supplemented by local groundwater supply wells. This section includes information regarding the basin description, groundwater management, and coordination with the relevant Groundwater Sustainability Agency (GSA), followed by a discussion of historical pumping and supply sufficiency.

6.2.1 Basin Description and Status
Sonoma Valley Subbasin (Local Groundwater Supply)
The City overlies the Sonoma Valley Subbasin of the Napa-Sonoma Valley Groundwater Basin (DWR Basin No. 2-2.02). The Sonoma Valley Groundwater Basin is one of three subbasins that drain south-southeast into San Pablo Bay (DWR, 2003). The Sonoma Valley Subbasin is not adjudicated, and the Basin is not in a condition of critical overdraft. Figure 6-2 shows the groundwater basin and subbasin areas.

The Sonoma Valley Subbasin is designated as a high priority basin under DWR’s 2019 Phase 2 Basin Prioritization (DWR, 2019). Under this prioritization process, basins are ranked on eight components, and if a basin is assigned more than 21 total points, it is defined as “high priority.” The main factors driving the Basin’s designation include the density of public supply wells (4 out of 5 possible points), the density of total wells (4 out of 5 possible points), irrigated acreage per square mile (3 out of 5 possible points), Agenda Item #8.1:

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groundwater reliance (3 out of 5 possible points), and documented impacts including declining groundwater levels and subsidence (3 out of 5 possible points). 7 As a DWR-designated high priority basin, the Sonoma Valley Subbasin is subject to the requirements of the Sustainable Groundwater Management Act (SGMA), including the requirement to be covered by one or more GSAs and to prepare and submit to DWR one or more GSPs by 31 January 2022. The Sonoma Valley Subbasin GSP was submitted to DWR in January 2022 and approved by DWR on January 26, 2023.

The Sonoma Valley Subbasin covers an area of approximately 44,000 acres (70 square miles) and occupies a northwest trending structural depression in the coastal mountain ranges immediately north of San Pablo Bay. The Subbasin is one of three subbasins of the Napa-Sonoma Valley Groundwater Basin and is bounded on the west by the Sonoma Mountains and on the east by the Mayacamas Mountains. The Sonoma Valley Subbasin extends from San Pablo Bay northward to about 2 miles south of the community of Kenwood where the alluvial plain terminates. The principal stream draining the Subbasin is Sonoma Creek, which is tidally influenced from Schellville downstream to its mouth at San Pablo Bay (Sonoma Valley GSA, 2021).

Further description of the Subbasin is included in the Basin Setting chapter of the GSP for the Subbasin, including the hydrogeologic conceptual model, and current and historical groundwater conditions. GSP chapters are available on the Sonoma Valley GSA website 8 .
7 DWR’s 2019 Phase 2 Basin Prioritization used the basin’s total possible ranking points assigned to each of the eight components to determine the priority. A basin is defined as High Priority if it has more than 21 total ranking points.
8 Sonoma Valley Subbasin GSP website: http://sonomavalleygroundwater.org/gsp/.

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Figure 6-2 Regional Setting and Groundwater Basins
From Sonoma Valley Subbasin GSP, Figure 2-1 (Sonoma Valley Subbasin GSA, 2021) Agenda Item #8.1:

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Santa Rosa Plain Subbasin (Sonoma Water Groundwater Supply) As noted in Section 6.1, Sonoma Water utilizes groundwater from the Santa Rosa Plain Subbasin of the Santa Rosa Valley Basin during drought periods or when Russian River supplies are constrained. Given this, in accordance with CWC § 10631(b), characteristics and groundwater management of the Santa Rosa Plain Subbasin are provided below.

The Santa Rosa Subbasin is not adjudicated, and in its recent evaluation of California groundwater basins, DWR determined that the Basin is not in a condition of critical overdraft (DWR, 2019). The Santa Rosa Plain Subbasin is currently categorized by the DWR program as a medium priority basin (DWR, 2019).

Under DWR’s prioritization process, basins are ranked on eight components, and if a basin is assigned more than 14 total points, but less than 21 total points, it is defined as “medium priority.” The main factors driving the Santa Rosa Plain Subbasin’s designation include population density (3 out of 5 possible ranking points), population growth (3 out of 5 possible points), public supply well density (5 out of 5 possible points), total production well density (5 out of 5 possible points), and groundwater reliance (3 out of 5 possible points) (DWR, 2019).

As a DWR-designated medium priority basin, the Santa Rosa Subbasin is subject to the requirements of the SGMA, including the requirement to be covered by one or more GSAs and to prepare and submit to DWR one or more GSPs by 31 January 2022. The Santa Rosa Plain GSP was submitted to DWR in January 2022 and approved by DWR on January 26, 2023.

Geologically, the Santa Rosa Plain Subbasin has one main water-bearing unit, the Merced Formation, and several units with lower water-bearing capacities, including the Glen Ellen Formation and the Alluvium.

The shallow Alluvium consists of poorly sorted coarse sand and gravel and moderately-sorted fine sand, silt, and clay. The alluvial deposits are not perennially saturated, have low permeability, and are generally unconfined or slightly confined. The Glen Ellen Formation underlies the Alluvium and consists of partially cemented beds of poorly sorted gravel, sand, and silt, and clay that vary widely in thickness and extent, with thicknesses varying from 3,000 feet to less than 1,500 feet on the west side of the valley. Underlying the Glen Ellen Formation is the Merced Formation, which is a marine deposit of fine sand and sandstone with thin interbeds of clay and silty-clay and some lenses of gravel and localized fossils. The Merced Formation is Pliocene in age, and its thickness is estimated to range from 300 feet to greater than 1,500 feet. Aquifer continuity and water quality in the Merced Formation are generally very good, with well yields from 100 to 1,500 gallons per minute (gpm) (Santa Rosa Plain GSA, 2021).

The GSP estimates the sustainable yield of the basin to be 5,400 AFY. The GSP includes projects and management actions to ensure future sustainable use of the subbasin.

6.2.2 Groundwater Management
Sonoma Valley Subbasin (Local Groundwater Supply)
Prior to the passage of SGMA, a coalition of local stakeholders participated in the development of a Sonoma Valley Groundwater Management Plan (Sonoma Valley GMP), which was completed in 2007 (Sonoma Water, 2007). This plan was prepared to inform and guide Sonoma Water and other stakeholders in maintaining a sustainable, high-quality groundwater resource for the users of the groundwater basin 9 Santa Rosa Plain GSA website: https://santarosaplaingroundwater.org/gsp/.

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underlying the Sonoma Valley. Stakeholders participating in the development of the Sonoma Valley GMP were Sonoma Water, the City, VOMWD, and the Sonoma Valley County Sanitation District (SVCSD).

Guidance for the Sonoma Valley GMP effort was provided by a Basin Advisory Panel (BAP), which included additional stakeholders including agricultural interests, local citizen groups, environmental groups, and business interests. Primary components of the Sonoma Valley GMP were grouped into several categories, including (1) stakeholder involvement, (2) groundwater monitoring, (3) groundwater quality protection, (4) groundwater sustainability, and (5) planning integration. The Sonoma Valley Plan identified a range of voluntary management actions, including groundwater recharge, groundwater banking, increased water use efficiency, and greater use of recycled water to reduce demand for groundwater.

The BAP held its last meeting in August 2016 and was replaced by the new Sonoma Valley Groundwater Sustainability Agency. The Sonoma Valley GSA was formed in June 2017 through a Joint Powers Agreement entered into by the County of Sonoma, the City of Sonoma, VOMWD, Sonoma Resource Conservation District, Sonoma Water, and North Bay Water District. The Sonoma Valley GSA is governed by six board members and alternates from the six member organizations, which each appoint one member and one alternate member. The Board of Directors is advised by an Advisory Committee of 12 members consisting of six at-large members appointed by the six member agencies, and six interest-based members appointed by the Sonoma Valley GSA Board of Directors, representing various other stakeholders.

The GSP for the Sonoma Valley Subbasin was submitted to DWR in January of 2022 and approved by DWR in January 2023.

Santa Rosa Plain Subbasin (Sonoma Water Groundwater Supply) Prior to the passage of SGMA, the Santa Rosa Plain Subbasin was managed under the Santa Rosa Plain Watershed Groundwater Management Plan (Santa Rosa Plain GMP), developed by the Santa Rosa Plain Advisory Panel (Santa Rosa Plain Advisory Panel, 2014). The stated goal of the Santa Rosa Plain GMP was “to proactively coordinate public and private groundwater management efforts and leverage funding opportunities to maintain a sustainable, locally-managed, high-quality groundwater resource for current and future users, while sustaining natural groundwater and surface water functions.” The Santa Rosa Plain GMP outlines eighteen Basin Management Objectives and groups these into seven key management components, including: (1) stakeholder involvement and public awareness, (2) monitoring and modeling program, (3) groundwater protection, (4) increasing water conservation and efficiency, (5) increasing groundwater discharge, (6) increasing water reuse, and (7) integrated groundwater management.

The Santa Rosa Plain Subbasin is now managed under the GSP for the Santa Rosa Plain Subbasin. The Santa Rosa Plain GSA was formed in June 2017 through a Joint Powers Agreement entered into by Sonoma Water, City of Cotati, City of Rohnert Park, City of Santa Rosa, City of Sebastopol, Town of Windsor, County of Sonoma, Gold Ridge Resource Conservation District, Sonoma Resource Conservation District, Branger Mutual Water Company, California American Water, Willowside Mutual Water Company, and Penngrove Water Company, and covers the entire subbasin. The Santa Rosa Plain GSA is governed by a nine-member Board of Directors, which includes a position held by Sonoma Water. The Board of Directors is advised by an Advisory Committee that includes eighteen members appointed by the Board of Directors, representing various stakeholders.

The GSP for the Santa Rosa Plain Subbasin was submitted to DWR in January 2022 and approved by DWR in January 2023.

6.2.3 Coordination with Groundwater Sustainability Agencies The City is a member of the Sonoma Valley GSA and has been actively involved in GSP development activities and will continue to be involved throughout SGMA implementation. The City of Sonoma has one Agenda Item #8.1:

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Director and one alternate member on the Sonoma Valley GSA Board of Directors, as well as one appointee on the Advisory Committee. The Board of Directors meets every two months, while the advisory committee meets every month to provide input and recommendations to the Board of Directors on GSP development, implementation, and policies. Both the Board of Directors and the Advisory Committee receive input from a number of administrative and technical staff, as well as legal and financial consultants.

The City is not directly involved with the Santa Rosa Plain GSA. However, as noted above, Sonoma Water is a member of Santa Rosa Plain GSA and the City has coordinated with Sonoma Water on its demand projections through 2045.

6.2.4 Historical Pumping and Supply Sufficiency
The City uses its local groundwater supply wells to help meet demand. It is the City’s intent to use its wells to meet peak summer month demands rather than on a year-round basis. The City currently extracts groundwater from a total of five active local wells located just north of the Sonoma Valley Subbasin boundary. The City also has one standby well, and two additional wells that are offline due to water quality issues.

Table 6-1 lists the amount of groundwater pumped by the City over the past five years from the Sonoma Valley Subbasin. The City pumped an average of 180 AF per year over the 5-year time period between 2021 and 2025, and a maximum of 265 AF in 2022.

A sustainable yield for the Sonoma Valley Subbasin was determined as part of the GSP development process. The sustainable yield provides an estimate of the quantity of groundwater that can be pumped on a long-term average annual basis without causing undesirable results and is estimated using a groundwater model that incorporates planned future pumping, geologic conditions, hydrologic assumptions, future projects, and other inputs described in the GSP. Based on groundwater modeling results, the sustainable yield for the Subbasin is estimated to be 5,400 AFY. It should also be noted that the City’s existing wells are not within the Subbasin boundary and, therefore, the City’s annual pumping is not included in Sonoma Valley Subbasin Annual Reports prepared by the GSA. The City will, however, continue to coordinate with the GSA and support projects and management actions to ensure sustainable subbasin management.

Section 7.2.1 presents an analysis of the City’s available supplies based on historical purchased water and local groundwater use and review of available information regarding future supply availability to the City, accounting for implementation of the GSP. Based on the available information, the available groundwater supply and the purchased water supply are expected to be sufficient to meet the projected future demands of the City in normal and multiple dry year periods through 2050.

Table 6-1 Groundwater Volume Pumped (DWR Table 6-1)
Groundwater
Type Water Type Location or Basin Name 2021 2022 2023 2024 2025 Alluvial Basin Potable
Sonoma Valley
Groundwater
Subbasin, NapaSonoma Valley
Groundwater
Basin
315 265 100 119 100
Total 315 265 100 119 100
NOTES: Volumes are in units of AF.

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6.3 Surface Water
As described above in Section 6.1, the City purchases surface water from Sonoma Water as its primary water supply.

6.4 Stormwater
There are no plans to divert stormwater for beneficial uses in the City.

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

This section provides information on the amount of generated wastewater and existing disposal of wastewater to determine the potential for recycled water use by the City. The amount of recycled water currently used, potentially available, and future potential uses for recycled water for the City are also described.

6.5.1 Recycled Water Coordination
The City’s recycled water distribution system was brought online in 2021 and utilizes recycled water produced by the SVCSD. The City has been in discussion with various agencies regarding the potential use of recycled water in the City’s service area, including Sonoma Water, SVCSD, and VOMWD.

6.5.2 Wastewater Collection, Treatment, and Disposal
 CWC §10633 (a)
A description of the wastewater collection and treatment systems in the supplier’s service area, including a quantification of the amount of wastewater collected and treated and the methods of wastewater disposal.  CWC §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.

SVCSD provides wastewater collection, treatment, disposal, and water recycling services for the City’s service area, and other areas in the Sonoma Valley, including within the boundaries of the City of Sonoma.

The SVCSD reclamation facility provides tertiary treatment for a permitted average dry-weather flow capacity of 3 million gallons per day (mgd). The current average dry-weather flow of the SVCSD reclamation facility is 2.7 mgd, and the average winter peak flow is 22 mgd.

Treated wastewater is currently used to restore the Napa Salt Marsh, is discharged to the San Pablo Bay via Schell and Hudeman Slough, or is reused in the southern part of the Sonoma Valley. Current reuse of wastewater treated by SVCSD includes vineyard and pasture irrigation, water for construction, and a small amount of water used for residential landscape irrigation. In recent years, the SVCSD has explored the feasibility of expanding recycled water use to offset local groundwater pumping or imported Russian River water in addition to reducing or eliminating discharges to San Pablo Bay.

Table 6-2 identifies the volume collected within the City’s service area by SVCSD. Wastewater is collected from the City’s service area by SVCSD and treated and disposed of outside of the City’s service area.

Therefore, as indicated in Table 6-3 the City has not completed DWR Table 6-3.

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Table 6-2 Wastewater Collected Within Service Area in 2025 (DWR Table 6-2) Name of Wastewater
Collection Agency
Wastewater
Volume
Metered or
Estimated?
(OPTIONAL)
Volume of
Wastewater
Collected
from UWMP
Service Area
2025 (a)
Name of Wastewater
Treatment Plant (WWTP)
and Place ID Number
Is WWTP
Located
Within
UWMP
Area?
Sonoma Valley County
Sanitation District
Estimated 735 Sonoma Valley County SD
WWTP, Place ID 257754
No
Total Wastewater
Received from UWMP
Service Area in 2025:
735
NOTES:
(a) Volumes are in units of AF.
(b) Wastewater collected was calculated based on estimates of indoor water use from single family, multi-family and commercial/institutional sectors.

Table 6-3 Wastewater Treatment and Outcomes Within UWMP Service Area in 2025 (DWR Table 6-3)
☒ Checked box indicates no wastewater is treated or disposed of within the UWMP service area.

6.5.3 Comparison of Previously Projected Use and Actual Use  CWC § 10633 (e)
A description of the actual use of recycled water in comparison to uses previously projected pursuant to this subdivision.

Table 6-4 provides a comparison of the City’s 2020 UWMP projection for 2025 recycled water demand to actual 2025 water use by the recycled water system.

The City’s 2020 UWMP projected demand for recycled water in 2025 to be 55 AF. Actual recycled water use in 2025 was 21 AF. This difference is primarily due to changes in demand at the Sonoma Valley Unified School District.

Table 6-4 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual (DWR Table 6-5) Use Type 2020 Projection for 2025
(a)
2025 Actual Use (a)
Landscape irrigation (excl. golf courses) 55 21
Total 55 21
NOTES:
(a) Volumes are in units of AF.

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6.5.4 Actions to Encourage and Optimize Future Recycled Water Use  CWC § 10633 (e-g)
(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. (f) A description of actions, including financial incentives, which may be taken to encourage the use of recycled water, and the projected results of these actions in terms of acre-feet of recycled water used per year. (g) A plan for optimizing the use of recycled water in the supplier’s service area, including actions to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate the increased use of treated wastewater that meets recycled water standards, and to overcome any obstacles to achieving that increased use.

In 2018, the City prepared a Recycled Water Feasibility Analysis to explore opportunities to expand the recycled water system within the City’s service area, with a focus on extending recycled water use to the northern portion of the City (GHD, 2018a). In this Recycled Water Feasibility Analysis, potential opportunities for expanding recycled water use to the Sonoma Plaza, Depot Park, Veterans Cemetery, Field of Dreams, Armstrong Park, and other landscape areas were identified, and a potential alignment for an extended recycled pipeline was described, with a potential additional recycled water demand of between 64 and 76 AFY. The construction of such a recycled water system extension will be dependent upon future identification of funding opportunities for the project, and thus is not included in the projected recycled water use presented herein or the methods to encourage future recycled water use, as reflected in Table 6-5.

Table 6-5 Methods to Encourage Future Recycled Water Use (DWR Table 6-6) ☒ Checked box indicates that Supplier does not plan to expand recycled water use in the future. Supplier will not complete the table below but will provide narrative explanation.

Pg. 6-13 Provide page location of narrative in UWMP

6.5.5 Recycled Water System and Recycled Water Beneficial Uses  CWC §10633 (c-g)
(c) A description of the recycled water currently being used in the supplier’s service area, including, but not limited to, the type, place, and quantity of use.
(d) A description and quantification of the potential uses of recycled water, including, but not limited to, agricultural irrigation, landscape irrigation, wildlife habitat enhancement, wetlands, industrial reuse, 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. (f) A description of actions, including financial incentives, which may be taken to encourage the use of recycled water, and the projected results of these actions in terms of acre-feet of recycled water used per year. (g) A plan for optimizing the use of recycled water in the supplier’s service area, including actions to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate the increased use of treated wastewater that meets recycled water standards, and to overcome any obstacles to achieving that increased use.

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As described above, the 5th Street East Recycled Water Pipeline Project that was completed in 2021 delivers recycled water to Sonoma Valley Unified School District and Engler Street park for landscape irrigation. At this time, there are no extensions planned for the recycled water system and therefore, current demands of 21 AFY are assumed to extend into the future.

As described in Section 0, the City’s 2018 master plan identified potential opportunities for expanding recycled water use to reach an additional 64 AFY to 76 AFY of non-potable demand. However, funding would be needed to construct the required extension.

Table 6-6a and Table 6-6b identify the current and projected recycled water direct uses within the City’s service area by beneficial use type. This includes projected uses by the Sonoma Valley Unified School District and Sonoma Valley Oaks Park on Engler Street. Additional future use and timing of recycled water (e.g., by agricultural users) cannot be estimated at this time, but is reflected under “potential recycled water use”.

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Table 6-6a Recycled Water Direct Beneficial Uses Within Service Area, General Information (DWR Table 6-4) Name(s) of Facility/ies Producing (Treating) the Recycled Water (OPTIONAL): SVCSD Name of Supplier Operating the Recycled Water Distribution System (OPTIONAL): SVCSD Supplemental Water Added in 2025 (volume). Include units (OPTIONAL): - Source of 2025 Supplemental Water (OPTIONAL): -
Table 6-7b Recycled Water Direct Beneficial Uses Within Service Area, Volumes (DWR Table 6-4) Use Type
Water Type
(after treatment if
treated)
(OPTIONAL)
2025 2030 2035 2040 2045 2050
Potential
Recycled
Water Use
Volume
Narrative
page
number
(OPTIONAL)
Landscape irrigation
(exc golf courses) Non-Potable 21 21 21 21 21 21 85 to 97 - Total 21 21 21 21 21 21 85 to 97 -
NOTES:
(a) Volumes are in units of AF.

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6.6 Desalinated Water Opportunities
 CWC §10631(g) A plan shall be adopted in accordance with this chapter and shall do all of the following:

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 City is located within approximately 15 miles of San Pablo Bay, so desalination of bay water could be a possibility in the future. Although the opportunity exists to explore this option further in the future, it is currently not included in this Plan as a future water supply source.

6.7 Water Exchanges and Transfers
 CWC §10631 (c) A plan shall be adopted in accordance with this chapter and shall do all of the following:

Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis.

Although the City does not currently transfer or exchange water with other entities, water transfers between Sonoma Water’s Contractors are authorized under the Restructured Agreement. 10 Such transfers and exchanges between Sonoma Water Contractors have been necessary in the past and may be necessary in the future to improve water supply reliability. The City does not include water transfers in the water supply projections presented in this Plan because they will be pursued on an as-needed basis.

6.8 Future Water Projects
 CWC §10631 A plan shall be adopted in accordance with this chapter and shall do all of the following:
(b) (3) For any planned sources of water supply, a description of the measures that are being undertaken to acquire and develop those water supplies.
(f) Include a description of all water supply projects and water supply programs that may be undertaken by the urban water supplier to meet the total projected water use, as established pursuant to subdivision (a) of Section 10635. The urban water supplier shall include a detailed description of expected future projects and programs that the urban water supplier may implement to increase the amount of the water supply available to the urban water supplier in normal and single-dry water years and for a period of drought lasting five consecutive water years. The description shall identify specific projects and include a description of the increase in water supply that is expected to be available from each project. The description shall include an estimate with regard to the implementation timeline for each project or program.

The City is working with Sonoma Water, VOMWD, and other interested participants to evaluate the technical feasibility of aquifer storage and recovery (ASR) as a method for groundwater banking. In Fall 2018, a pilot project was completed in the City of Sonoma to verify and empirically determine specific hydrogeologic and water quality factors. Next steps include a technical and economic viability assessment of ASR technology in the region. During 2018, a 6-month ASR pilot test was performed to evaluate the technical feasibility of ASR in the region, with results indicating that a full-scale ASR project may be feasible. Additional testing of ASR feasibility is expected to be performed in the future, with test results to be used to complete environmental documentation and design for a full-scale ASR project in the region.

The City evaluates its well system and the yield and condition of its wells on an ongoing basis. The City’s Water System Master Plan recommended the installation of a new groundwater supply well, Well 9, to serve as a backup well to help maintain capacity during emergency conditions (GHD, 2018b). A location for this well has not been secured but would most likely be located in the general area north of West Spain 10 The Restructured Agreement can be accessed at the following link:
https://evogov.s3.amazonaws.com/185/media/181899.pdf.

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Street. It should be noted that the intent of this new well is to maintain the reliability of the City’s current pumping capacity, rather than to expand its current groundwater pumping capacity.

Future projects that may contribute to the City’s water supply are summarized in Table 6-8.

Table 6-8 Expected Future Water Supply Projects or Programs (DWR Table 6-7) ☐ No expected future water supply projects or programs that provide a quantifiable increase to the agency's water supply.

Supplier will not complete the table below.
☒ Some or all of the supplier's future water supply projects or programs are not compatible with this table and are described in a narrative format.

Pg. 6-17 Provide page location of narrative in the UWMP.

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6.9 Summary of Existing and Planned Sources of Water
 CWC §10631(b)
Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a).  CWC §10631(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.
 CWC §10631(b)(4)(D)
A detailed description and analysis of the amount and location of groundwater that is projected to be pumped by the urban water supplier. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records.

The City purchases potable water from Sonoma Water to meet the majority of the water demands within the City’s service area. In 2025, the City purchased approximately 1,784 AF of water from Sonoma Water.

The remainder of the City’s water supply was obtained from local production of groundwater. In 2025, the City produced 100 AF of groundwater. The City’s water supplies in 2025 are summarized in Table 6-9.

Table 6-9 Water Supplies – 2025 Actual (DWR Table 6-8)
Water Supply Additional Description
(as needed)
Water Type
(after treatment if
treated)
Actual 2025
Volume
Total
Entitlement
(OPTIONAL)
Purchased or
Imported Water
Sonoma Water
Purchases Potable 1,784 -
Groundwater (not
desalinated) Local Production Potable 100 -
Recycled Water Non-Potable 21 -
Subtotal Potable 1,884 -
Subtotal nonpotable 21 -
Total 1,905 -
NOTES: Volumes are in units of AF.

The City plans to continue to purchase water from Sonoma Water, while monitoring its production of groundwater. The City does not reduce salinity in either groundwater or surface water, as indicated in Table 6-10. The City does not anticipate developing additional long-term water supplies from other sources in the near future. Water supplies from Sonoma Water through 2050 are projected to be equivalent to the City’s annual entitlement of 3,000 AFY, established in the Restructured Agreement and effective through 2037. The City’s total water supply projections are shown in Table 6-11 in five-year increments through 2050.

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Table 6-10 Source Water Desalination by Urban Water Supplier (DWR Table 6-8 DS) ☒ Checked box indicates Supplier does not reduce salinity in either groundwater or surface water prior to distribution.

Table 6-11 Water Supplies – Projected (DWR Table 6-9)
Water Supply Additional Detail on
Water Supply Water Type 2030 2035 2040 2045 2050
Purchased or Imported
Water Sonoma Water Potable 3,000 3,000 3,000 3,000 3,000 Groundwater (not
desalinated)
Sonoma Valley
Subbasin Potable 238 238 238 238 238
Recycled Water SVCSD Non-Potable 21 21 21 21 21
Subtotal Potable 3,238 3,238 3,238 3,238 3,238
Subtotal Non-Potable 21 21 21 21 21
Total 3,259 3,259 3,259 3,259 3,259
NOTES: Volumes are in units of AF. Values represent reasonably available volumes.

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6.10 Special Conditions
Special conditions including climate change effects, regulatory conditions and project development, and other locally applicable criteria may affect supply availability, as describe in the following subsections.

6.10.1 Climate Change Effects
Purchased Water
Sonoma Water completed its Climate Adaptation Plan in October 2021. This Climate Adaptation Plan includes a vulnerability assessment, risk assessment, and potential adaptation concepts. The following summary of the risk assessment results for Sonoma Water supply system is provided in the Climate Adaptation Plan’s Table 15:
• Potter Valley Project 11 and Lake Mendocino was considered moderate risk due to its sensitivity to modest changes in hydrology and importance in providing flows for the upper Russian River for instream flows, flood control, and buffering impacts to Lake Sonoma. • Lake Sonoma was assessed to have moderate/high risk primarily due to the drought and wildfire risks. The importance of the facility for providing water supply, hydropower, and ecosystem benefits led to high consequences should the operation be restricted. • Wohler and Mirabel diversion facilities have high risk across all categories. These facilities and operations are susceptible to flooding, and wildfire/post-fire threats. The dependence on natural watershed processes (regulated flow, natural filtration, etc.) is a strength of the water supply system, but any failure of these systems or risk to the facilities themselves pose high risks.

Financial, social, and governance risks would be considered high if these facilities were to be operated at limited capacity.
• River Road Chlorination Facility, Wohler Chlorination and Corrosion Control Facility, and Mirabel Chlorination Facility are assessed with moderate risk. While they may suffer temporary impacts due to climate change, redundancy of operations between facilities may reduce overall risk. • Ely Booster Pump Station is considered high risk with respect to system function.

The Climate Action Plan includes a recommended water supply adaptation strategy that consists of five major actions that include specific projects to address these risks, such as development of a water diversion facilities protection program to protect Wohler and Mirabel diversion infrastructure, an expanded Forecast-Informed Reservoir Operations program to increase operational flexibility at Lake Mendocino, and development of regional water supply strategies to improve system integration and regional resilience.

Groundwater
SGMA requires that GSPs include basin-wide water budget models under various climate change scenarios, including future conditions that account for the effects of estimated climate change. The Sonoma Valley Subbasin GSP incorporates a climate change scenario that incorporates changes to precipitation, surface water flows, and sea level rise. When the climate change scenario is applied to the projected water budget, the first 30 years of the future period have a similar rate of projected groundwater storage loss as the historical period, while the period from 2050 through 2070 has accelerated groundwater storage loss due to projected below-average precipitation. The projects and management actions identified in the GSP incorporated future climate change and growth consideration. 11 Since the time the Climate Adaptation Plan was prepared, it was determined that the Potter Valley Project would be decommissioned. See Section 7.1.1 for more information.

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Given the planning timeframe of this UWMP (2050), groundwater supply is not expected to be impacted by climate change assuming the projects and management actions move forward according to the implementation plan described in the GSP.

6.10.2 Regulatory Conditions and Project Development
Emerging regulatory conditions may affect planned future projects and the characterization of future water supply availability and analysis. The City does not have any current plans to develop additional supply sources other than construction of a new water supply well. If the City does move forward with plans to develop supply projects, emerging regulatory conditions will be considered, and the associated water supply reliability impacts will be assessed in future UWMP updates.

6.10.3 Other Locally Applicable Criteria
Other locally applicable criteria may affect characterization and availability of an identified water supply (e.g., changes in regional water transfer rules may alter the availability of a water supply that had historically been readily available). The City does not have any current plans to develop additional supply sources other than the construction of a new water supply well. If the City does move forward with any plans to develop supply projects, locally applicable criteria will be considered, and the associated water supply reliability impacts will be assessed in future UWMP updates.

6.11 Energy Intensity
 CWC §10631.2
(a) In addition to the requirements of Section 10631, an urban water management plan shall include any of the following information that the urban water supplier can readily obtain:
(1) An estimate of the amount of energy used to extract or divert water supplies. (2) An estimate of the amount of energy used to convey water supplies to the water treatment plants or distribution systems.
(3) An estimate of the amount of energy used to treat water supplies. (4) An estimate of the amount of energy used to distribute water supplies through its distribution systems. (5) An estimate of the amount of energy used for treated water supplies in comparison to the amount used for nontreated water supplies.
(6) An estimate of the amount of energy used to place water into or withdraw from storage. (7) Any other energy-related information the urban water supplier deems appropriate. (b) The department shall include in its guidance for the preparation of urban water management plans a methodology for the voluntary calculation or estimation of the energy intensity of urban water systems. The department may consider studies and calculations conducted by the Public Utilities Commission in developing the methodology.
(c) The Legislature finds and declares that energy use is only one factor in water supply planning and shall not be considered independently of other factors.

Within the service area, the City uses energy to distribute water supplies through its distribution systems.

Sonoma Water uses energy to treat and distribute water before delivery to the City. However, the energy is used outside of the City’s service area, and the energy consumption information is not typically shared with the City. The City’s distribution systems include groundwater supply wells and pump stations. The energy used by these facilities is metered and documented in monthly PG&E bills. In 2025, the City is estimated to have used 185,700 kilowatt-hours (kWh) of energy to operate the water supply system (Table 6-12). Based on this, the energy intensity is estimated to be approximately 288 kilowatt hours per million gallons (kWh/MG), which is equivalent to 885 kWh/AF.

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Table 6-12 Recommended Energy Reporting: Single Delivery Product, Total Utility Approach (DWR Table O-1B)
Category Metric Value Total Utility Hydropower Net Utility Reporting
Period
Start Date 01/01/2025 — — —
Reporting
Period
End Date 12/31/2025 — — —
Data Inclusion Upstream
Embedded Energy
Included
No — — —
Units Water
Measurement
Units
AF — — —
Water
Volume
Volume Entering
Process
— 1,978 – 1,978
Energy Use Energy Consumed
(kWh)
— 185,700 – 185,700
Efficiency Energy Intensity
(kWh/MG)
— 288 – 286
Renewable
Energy
Self-Generated
Renewable Energy
0 kWh — — —
NOTES:

Data Quality: Combination of Estimates and Metered Data Data Quality Narrative: Utility bills for one month of energy consumption data were multiplied by twelve months for the year to operate the annual supply system for one year, while metered water data was used for the volume of water entering process.

Narrative: The City uses energy to distribute water supplies through its distribution systems. The City’s distribution systems include groundwater wells and pump stations.

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7 WATER SUPPLY RELIABILITY ASSESSMENT
 CWC §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.  CWC §10630.5
Each plan shall include a simple lay description of how much water the agency has on a reliable basis, how much it needs for the foreseeable future, what the agency’s strategy is for meeting its water needs, the challenges facing the agency, and any other information necessary to provide a general understanding of the agency’s plan.

This chapter describes the reliability of the City’s water supplies. Assessment of water supply reliability is complex and dependent upon a number of factors, such as the number of water sources, regulatory and legal constraints, hydrological and environmental conditions, climate change, and expected growth, among others. Based on available historical information and projections of future water uses, regulatory and legal constraints, and hydrological and environmental conditions, including climate change, the City has made its best determination of future water supply reliability for the City, as described below.

7.1 Constraints on Water Sources
Purchased water from Sonoma the Water Contractors formed a regional in 2011 AllianceWater and local groundwater are the primary supply sources for the City. Potential constraints on future purchased water availability have been identified, including water quality and climate change. These constraints, along with associated management strategies, are summarized in the following sections.

7.1.1 Supply Availability
Additional information is provided in the following sections regarding supply availability, including under various hydrologic conditions.

Surface Water
The water available to Sonoma Water’s customers is constrained by both physical and legal constraints.

The capacity of Sonoma Water’s transmission system is a physical constraint that can limit the City’s water supply from Sonoma Water. The City receives Sonoma Water supply through the Sonoma Aqueduct facilities located south of the Oakmont community in Santa Rosa, which serves both the City and VOMWD.

The main booster pump station for the Sonoma Aqueduct is the Sonoma Booster Pump Station which is located on the east side of Spring Lake. A minor booster pump station is the Eldridge booster pump station located near Glen Ellen, which is typically off-line.

Legal constraints include the Restructured Agreement for Water Supply (Agreement), Sonoma Water Rights, and the Russian River Biological Opinion. These legal constraints are described below.

Restructured Agreement
The Agreement includes specific maximum amounts of water that Sonoma Water is obligated to supply to its Water Contractors, including the City. The Agreement states that Sonoma Water is not obligated to provide the City with more than 3,000 acre feet per year (AFY) or more than 6.3 mgd as an average flow during any single month.

Sonoma Water Rights
Four SWRCB permits (SWRCB Permit Numbers 12947A, 12949, 12950, and 16596) currently authorize Sonoma Water to store water in Lake Mendocino (122,500 AFY) on the East Fork Russian River and Lake Sonoma (245,000 AFY) on Dry Creek, and to divert and redivert 180 cubic feet per second (cfs) of water Agenda Item #8.1:

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from the Russian River, up to 75,000 AFY. Sonoma Water estimates the existing annual diversion and rediversion limit of 75,000 AFY will be exceeded by 2035. Consequently, Sonoma Water will need to file an application to SWRCB by around 2030 to increase its annual diversion and rediversion limit. The permits also establish minimum instream flow requirements for fish and wildlife protection as well as for recreational considerations. These minimum instream flow requirements vary according to the hydrologic cycle as defined by SWRCB Decision 1610. Sonoma Water meets the Decision 1610 flow requirements by making releases from Coyote Valley Dam at Lake Mendocino and Warm Springs Dam at Lake Sonoma.

Biological Opinion
On September 24, 2008, the National Marine Fisheries Service (NMFS) issued a 15-year Biological Opinion for water supply operations, flood control activities, and channel maintenance conducted by the U.S.

Army Corps of Engineers (USACE), the Sonoma Water, and the Mendocino County Russian River Flood Control and Water Conservation Improvement District within the Russian River watershed. The 2008 Russian River Biological Opinion concluded that the elevated river flows required by SWRCB Decision 1610 were adversely affecting fish habitat and contributing to adverse effects on listed salmonid species.

To address these effects, the 2008 Biological Opinion identified a suite of alternatives intended to reduce impacts to listed species while maintaining water supply reliability, including:
• Reducing summertime flows in the Russian River and Dry Creek • Enhancing approximately six miles of habitat in Dry Creek • Creating and maintaining a freshwater lagoon in the Russian River estuary during summer months • Conducting long-term habitat and fish monitoring in Dry Creek, the Russian River, and the estuary • Eliminating barriers to fish passage and improving habitat conditions in several tributary streams The 2008 Biological Opinion required that summertime flows be permanently reduced to better replicate natural dry-year river conditions. Following issuance of the Biological Opinion, Sonoma Water submitted a petition to the SWRCB requesting permanent changes to the Decision 1610 minimum instream flow requirements consistent with NMFS’s recommendations and initiated preparation of an Environmental Impact Report (EIR) pursuant to the California Environmental Quality Act (CEQA). While the permanent change process was underway, Sonoma Water requested and obtained temporary changes to the Decision 1610 minimum instream flows on an annual basis beginning in 2010, consistent with the 2008 Biological Opinion.

On April 29, 2025, NMFS issued a new 10-year Biological Opinion addressing substantially similar water supply operations, flood control activities, and channel maintenance actions in the Russian River watershed. In contrast to the 2008 Biological Opinion, the 2025 Russian River Biological Opinion concluded that the proposed action is not likely to jeopardize the continued existence of Central California Coast coho salmon, California Coastal Chinook salmon, Central California Coast steelhead, or Southern Resident Killer Whale, and is not likely to destroy or adversely modify designated critical habitat for these species.

The 2025 Biological Opinion reflects over a decade of interim operational experience, habitat improvements, monitoring data, and incorporation of updated operational approaches. Although the jeopardy determination was removed, NMFS included Reasonable and Prudent Measures (RPMs) and associated terms and conditions to address remaining potential adverse effects to listed species. Key elements of the proposed action evaluated in the 2025 Biological Opinion include:
• Continued reservoir flood control and water supply operations at Coyote Valley Dam (Lake Mendocino) and Warm Springs Dam (Lake Sonoma), including approved deviations from Water Control Manuals
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• Implementation of Forecast-Informed Reservoir Operations to improve water supply reliability and flood management while enhancing downstream ecological conditions • Modification of the Russian River Hydrologic Index (Water Year Classification methodology) to shift from reliance on Eel River hydrology at Lake Pillsbury to Russian River hydrology based on conditions at Lake Mendocino, improving alignment between hydrologic classifications and actual watershed conditions
The 2025 Biological Opinion represents a substantial evolution from the 2008 framework, transitioning from emergency, annually-renewed flow modifications to a longer-term, integrated operational and regulatory approach that balances water supply, flood management, and species protection objectives in the Russian River watershed. (NOAA, 2025; Sonoma Water, 2025) PVP Decommissioning
PG&E is decommissioning its Potter Valley Project hydropower facilities 12 primarily due to economic considerations (PG&E, n.d.). Historically, the PVP has diverted water from the Eel River through a transbasin tunnel into the East Fork Russian River, where a portion of the diverted flow is used by the Potter Valley Irrigation District (PVID), and the remainder continues to Lake Mendocino. These imported flows have played a critical role in supplementing the highly variable, rainfall-driven hydrology of the Watershed. Stored water in Lake Mendocino has been managed and released to support downstream diversions, municipal and agricultural demands, and instream flow requirements.

This decommissioning effort carries significant implications for regional water reliability across the Upper Russian River Watershed. Historically, imported Eel River flows have supplemented the Russian River system during extended dry periods, providing an important hydrologic buffer that sustained baseflows, reservoir storage and instream habitat conditions. These imports have helped stabilize municipal, agricultural, and environmental water supplies, particularly during late summer and early fall when natural runoff is minimal.

Sonoma Water and regional partners have proposed a successor diversion and pumping facility (the “New Eel-Russian Facility”) and potential expanded storage at Lake Mendocino to preserve at least seasonal transfers, but future imports would likely be smaller, occur only in wetter periods, and cost more to operate. For the City, this means that Russian River supply reliability is no longer assumed to be supported indefinitely by year-round Eel River imports.

Groundwater
As noted in Section 6.2, the City currently has five active local supply wells, one back-up well, and two wells that are inactive due to groundwater quality. Drawdown pumping tests and well analyses were conducted for Wells No. 1, 3, 4 and 6 in 2009 where the pumping capacity for each well was evaluated.

The evaluation was conducted to identify pumping rate constraints on each well. These constraints considered the well construction, pumping equipment and well interference between the City’s active supply wells. Based on historical groundwater elevation data, the aquifer recharges fully during the winter months and historic operation of the City’s supply wells has not caused a condition of sustained aquifer overdraft. In the future, it is expected that the increased frequency of use of the City’s supply wells could 12 PVP, initiated in 1908, captures water at Cape Horn Dam (Van Arsdale Reservoir) and Scott Dam (Lake Pillsbury) on the Eel River. It diverts water through a tunnel to a powerhouse on the Russian River principally for hydropower generation. In addition to power production, the Potter Valley Project provides water supplies for agricultural irrigation and municipal uses across the Watershed.

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result in localized depression of the groundwater elevation in the pumping area during the four-month pumping season but water levels should recover during the winter months.

In normal and wet years, the total volume of pumping is expected to be relatively small, on the order of 60 to 90 AFY. During periods of drought or under conditions where Sonoma Water is unable to meet their water deliveries, higher pumping rates from the City’s supply wells is planned. Some of the City’s wells are located relatively close together, and if pumped simultaneously, extract groundwater from the same portion of the aquifer which can induce larger depressions in groundwater elevation. In order to efficiently extract groundwater from the aquifer, the City typically prefers to stagger the operation of adjacent wells to provide for appropriate aquifer recovery and avoid pumping interference effects.

Assuming that the City does not develop additional wells, the total estimated capacity of the City’s wells is projected to be 367 AFY and the total safe yield of the City’s wells is projected to be 238 AFY, based on the City’s 2018 Water Master Plan Update.

Historically, the groundwater supplies available to the City from the underlying Sonoma Valley Subbasin along with imported supply from Sonoma Water have always been sufficient to meet City demands. From a regional and Subbasin-wide standpoint, the City pumping is only a small fraction of total groundwater pumping and is not expected to significantly impact the sustainability of the Subbasin .As a member of the Sonoma Valley Groundwater Sustainability Agency (GSA), the City will continue to be actively involved in all groundwater management actions and decisions and will be able to incorporate these activities into their future supply planning efforts.

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

Impaired water quality has the potential to affect water supply reliability. The City has and will continue to meet all state and federal water quality regulations. All drinking water standards are set by the U.S.

Environmental Protection Agency (USEPA) under the authorization of the Federal Safe Drinking Water Act of 1974. In California, the SWRCB Division of Drinking Water (DDW) can either adopt the USEPA standards or set more stringent standards, which are then codified in Title 22 of the CCR. There are two general types of drinking water standards:
• Primary Maximum Contaminant Levels (MCLs) are health protective standards and are established using a very conservative risk-based approach for each constituent that takes into potential health effects, detectability and treatability, and costs of treatment. Public water systems may not serve water that exceeds Primary MCLs for any constituent. • Secondary MCLs are based on the aesthetic qualities of the water such as taste, odor, color, and certain mineral content, and are considered limits for constituents that may affect consumer acceptance of the water.

The City routinely monitors the water that is treated and served to customers to ensure that water delivered to customers meets these drinking water standards. The results of this testing are reported to the SWRCB DDW following each test and are summarized annually in Water Quality Reports (also known as “Consumer Confidence Reports”), which are provided to customers by mail and made available on the City’s website at https://www.sonomacity.org/water-quality-reports/.

As previously noted, two of the City’s wells are not currently operated due in part to water quality issues.

These wells are therefore not operated and are not planned to be operated in the future except in a shortAgenda Item #8.1:

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Sonoma City CouncilJune 17, 2026

Sonoma City Council
June 17, 2026