Our water system is fortunate to have some of the best water in the U.S. Our major water source is the well-protected Tuolumne Watershed, where spring snowmelt flows from the Tuolumne River into Hetch Hetchy Reservoir. We rigorously protect and test the quality of your water to ensure that it meets or exceeds all federal and state standards for health.
Alert 12/3/24:
SFPUC System operations in the Richmond area may cause temporary water quality impacts. Learn more and stay up to date on our Service Alerts Page.