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Groundwater Management Program


San Francisco's Groundwater Basins

Our groundwater management program ensures that local groundwater resources designated for current or future beneficial use are properly protected to prevent overdraft, pollution or contamination. There are 7 groundwater basins in San Francisco.

North Westside Basin Groundwater Sustainability Plan

On March 10, 2015, the San Francisco Public Utilities Commission held a public hearing and adopted a resolution to establish the SFPUC as the Groundwater Sustainability Agency for the seven groundwater basins in San Francisco. The SFPUC also adopted a Resolution of Intent to Prepare a Groundwater Sustainability Plan for the North Westside Basin in compliance with the California Sustainable Groundwater Management Act of 2014.

The overall goal of the Groundwater Sustainability Plan for the North Westside Basin will be to assure a long-term, high quality, local water supply for current and future uses. Management of groundwater resources under a Groundwater Sustainability Plan is essential to maintain a good quality, reliable groundwater source.

If you wish to be added to our list of interested parties or participate in the development and implementation of the Groundwater Sustainability Plan for the North Westside Basin you may submit your contact information by email to or in writing to Jeff Gilman, San Francisco Public Utilities Commission, Water Resources Division, 525 Golden Gate Avenue, 10th Floor, San Francisco, California, 94102.

Groundwater Monitoring and Data Management

The Westside Basin Groundwater Monitoring Program provides information summarizing basin-wide groundwater pumping, groundwater levels and quality in the different aquifer systems within the basin, and surface water conditions, most notably in Lake Merced. The program also monitors physical and chemical changes in the groundwater system resulting from current pumping at the San Francisco Zoo and Golden Gate Park, the proposed San Francisco Groundwater Supply Project wells, and the proposed Regional Groundwater Storage and Recovery Project in northern San Mateo County.

The current Annual Groundwater Monitoring Report, Westside Basin is available here.

If you have questions, please email


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Last updated: 4/27/2017 4:19:29 PM