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The third largest municipal utility in California, serving 2.7 million residential, commercial, and industrial customers in the Bay Area.
Water Quality
Water Quality
Regulatory agreement through treatment plant support, sampling and lab analyses, reporting and inspections
Water & Power System
A Better Water Plan
The Bay Delta Plan Update: Why we support a voluntary agreement.

Dam Safety Program

The Hetch Hetchy Regional Water System collects surface runoff from rivers and creeks in three major watersheds that is stored in reservoirs that are created by dams, both large and small, for municipal water supply and hydropower generation. These dams and reservoirs are essential elements of our water delivery system.


PureWaterSF is a research project being conducted at 525 Golden Gate Ave., SF. The project takes treated water from our Living Machine through an advanced treatment process so that it meets safe drinking water standards The research is being conducted to demonstrate the feasibility of building-scale treatment of wastewater to produce purified water.

Last updated: 8/16/2019 9:21:57 AM