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The San Francisco Public Utilities Commission (SFPUC) manages a complex water supply system stretching from the Sierra to the City and featuring a complex series of reservoirs, tunnels, pipelines, and treatment systems. Two unique features of this system stand out: the drinking water provided is among the purest in the world; and the system for delivering that water is almost entirely gravity fed, requiring almost no fossil fuel consumption to move water from the mountains to our tap.
The SFPUC is the third largest municipal utility in California, serving 2.7 million residential, commercial, and industrial customers in the Bay Area. Approximately one-third of the delivered water goes to retail customers in San Francisco, while wholesale deliveries to 27 suburban agencies in Alameda, Santa Clara, and San Mateo counties comprise the other two-thirds.
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The San Francisco Public Utilities Commission (SFPUC) owns and operates the Hetch Hetchy Power System. Our facilities have been generating some of the cleanest energy available in California since 1918. Water flows downhill as it travels 167 miles from Yosemite to 2.7 million people throughout the Bay Area, and we put it to work by harnessing the natural forces of gravity-driven water to generate 100% greenhouse gas-free hydroelectric power.
This clean Hetch Hetchy Power, along with renewable power that we generate locally from solar and biogas facilities, energizes vital San Francisco services as well as a growing number of residential and commercial customers. All in all, we provide about 17% of San Francisco’s total electricity.