Local Water Supply Survey

Focusing on the Future Ahead

Our lives and economy depend on having clean, reliable water.

San Francisco receives 99% of its water from the Hetch Hetchy Regional Water System. This system delivers reliable, high quality water to 2.6 million Bay Area residents. Approximately 85% of that water originates from our pristine Hetch Hetchy Reservoir in the Sierra Nevada Mountains.

Given this large single source, our water supply is vulnerable to drought, climate change, and natural disasters.

We must work together with you – our customers – to both conserve and diversify our water sources to serve current and future needs.

Thank you for taking this survey and helping us ensure a reliable water supply for generations to come.