California · find a service

Find water quality reports in California

Find water quality reports.

In California, 2 city governments and 1 county department publish 3 official links for this service. Reviewed requirements cover availability notices (4). 3 counties have a page for it below.

Before you start · 2 things to check

Match the utility name on your bill before choosing a payment link. Service areas may cover only part of a county.
Payment options and any processing charges are set by the utility. CountyWiki does not collect account details or payments.

3 guides with reviewed service links · Reviewed local guides

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Highlighted counties have a reviewed service guide matching this selection. An agency may serve only a city or part of a county.

California58 counties

County directory Reviewed service guides available

Map for browsing; agency service areas may differ.

Map source

U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.

County government · San Francisco

San Francisco Public Utilities Commission (SFPUC)

Water Utility

SFPUC annual water quality reports — San FranciscoOfficial instructions

Choose the annual report for San Francisco water customers. The same directory separately lists the regional system, Treasure Island and Town of Sunol; these are separate report systems and do not establish a wider service area here.

Service area: SFPUC water/sewer customers in San Francisco. Other regional water suppliers and separately listed water systems require their own provider information. Area details & sources

Separate listed reports; no Sunol, regional or Bay Area customer coverage is inferred for this San Francisco entry

Read Our Annual Water Quality Reports for other Local and Regional Systems Annual Water Quality Report - San Francisco Regional System (2025) Annual Water Quality Report - Treasure Island (2025) Annual Water Quality Report - Town of Sunol (2025)

Official information checked October 26, 2026 · Details & sources

Source checked October 26, 2026

San Francisco Public Utilities Commission · SFPUC annual water quality reports (opens in a new tab)

Official utility topic page; exact report listing, reporting instruction or purpose-labelled contact

Read Our Annual Water Quality Report for San Francisco (2025)

Saved evidence: 7ee7edcfd49d7905 · Agent source review

Full guide, contact details & sources →

City government · Santa Clara

City of Palo Alto Utilities — customer accounts

Water Utility

CPAU annual water quality reports and paper-copy requestsOfficial instructions

Find CPAU's annual consumer confidence reports for Palo Alto water customers. The official directory lists its 2025 report and previous years, with Spanish and Chinese versions.

Service area: CPAU customers in the Palo Alto city navigation context; confirm CPAU is the provider on your account. This does not establish all-address service boundaries. Area details & sources

Official directory's latest report label; this is not a statement about present-day water conditions

Most Recent Annual Water Quality Report 2025 Annual Water Quality Report(PDF, 2MB)

Official information checked October 26, 2026 · Details & sources

Printed consumer confidence report requests; not outage dispatch

If you would like a copy of the report mailed to you, please email us at utilitiescommunications@paloalto.gov or call (650) 329-2479 to submit a request.

Official information checked October 26, 2026 · Details & sources

Source checked October 26, 2026

City of Palo Alto Utilities · City of Palo Alto Utilities water quality reports (opens in a new tab)

Official utility topic page; exact report listing, reporting instruction or purpose-labelled contact

Every year we publish an Annual Consumer Confidence Report which informs customers about the City's water quality. Past annual reports are provided below on this page.

Saved evidence: c28c02ae16b63505 · Agent source review

Full guide, contact details & sources →

City government · Los Angeles

Pasadena Water and Power — customer accounts

PWP water/electric customer accounts, including the Pasadena city navigation context; provider boundaries and every address are not established here.

PWP water quality reports and Water Quality Lab contactOfficial instructions

Find annual drinking-water reports for PWP water customers. The official 2026 report covers January–December 2025; previous-year reports are listed separately.

Service area: PWP customers in the Pasadena city navigation context; confirm PWP supplies the affected service. This does not establish every Pasadena address or countywide eligibility. Area details & sources

Publication label and tested reporting period remain distinct

Water Quality Report 2026 (Reporting period Jan-Dec 2025)

Official information checked October 26, 2026 · Details & sources

Source checked October 26, 2026

Pasadena Water and Power · Pasadena Water and Power water quality reports (opens in a new tab)

Official utility topic page; exact report listing, reporting instruction or purpose-labelled contact

Water Quality Report 2026 (Reporting period Jan-Dec 2025)

Saved evidence: ffa37eb0ea45c378 · Agent source review

Full guide, contact details & sources →

Find water quality reports in California

San Francisco Public Utilities Commission (SFPUC)

City of Palo Alto Utilities — customer accounts

Pasadena Water and Power — customer accounts

Find water quality reports by county