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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.

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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.

1 guide with reviewed service links · San Francisco

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California58 counties

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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 →

Find water quality reports in California

San Francisco Public Utilities Commission (SFPUC)

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