Skip to page body Home Customer Service How To Environment Projects & Programs About Us


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.

Last updated: 6/18/2019 9:53:44 AM