We own and operate the Hetch Hetchy Regional Water System, which serves 2.7 million customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties.
The system provides energy to retail electric customers, wholesale electric customers and in normal-to-high precipitations years, the SFPUC sells this energy on the California energy markets.
We capture lots of fascinating data about rainfall, water storage, power use, and more. Visit this page to explore.
We are the only coastal city in California with a combined sewer system that collects and treats both sewage and stormwater (collectively referred to as wastewater), helping to keep pollutants from entering the bay and ocean. Learn how we handle wastewater safely and responsibly.
We are dedicated to protecting and sustaining the resources entrusted to our care. Learn more about our regional watersheds including Alameda, Peninsula, and Upper Tuolumne.
The system delivers water at high pressure and includes two pump stations, two storage tanks, one reservoir, and approximately 135 miles of pipes.
We have a robust dam safety monitoring and maintenance program to ensure the integrity of our dams in San Francisco and to protect the public.