The San Francisco Public Utilities Commission’s 30th Annual Water Quality Report released Monday said the city’s drinking water met or exceeded all federal and state standards in 2025 after more than 95,000 tests.

The report also said no presence of per- or polyfluoroalkyl substances, otherwise known as PFAS or “forever chemicals,” was detected in the water tests. Introduced in the 1940s, these synthetic chemicals have been used to make various products resistant to heat, oil, stains and water, while also having been linked to severe health conditions.

Additionally, the commission reported that its management of watersheds helped to produce high-quality water for 2.7 million residents and businesses in the Bay Area. 

At the end of the report, the commission included a public notice about an equipment malfunction at the Sunol Valley Water Treatment Plant that failed to monitor the turbidity, or cloudiness, of recycled filter backwash water from June 23 to July 2, 2025. The report said water quality was not affected, customers did not need to act and there was no existing public health threat.

The issue was discovered and repaired on July 3, 2025, and staff were retrained to prevent future equipment failure. Regulations require the commission to inform consumers of monitoring violations within one year’s time.

The Sunol Valley Water Treatment Plant is also currently undergoing a construction upgrade called ozonation to improve the taste and smell of drinking water. 

According to the SFPUC’s release, the results reflect the long-term investment into the Hetch Hetchy Regional Water System.

“Every year for decades, this report has given our customers a clear look at the testing, standards, and safeguards behind the water they rely on every day,” said SFPUC General Manager Dennis Herrera in a release. “That transparency is important. The water quality results that you see reflect generations of careful stewardship, from protecting the environment to investing in a system that is vital to communities across the region.” 

Throughout June, San Francisco residents will receive postcards announcing the 2025 Water Quality Report, which is also available online.