City News

Daly City Signs onto Landmark Agreement for important Bay Area Groundwater Storage Project for Drought and Emergencies

A landmark agreement between Daly City, the San Francisco Public Utilities Commission (SFPUC), City of San Bruno, and California Water Service Company was finalized and signed Tuesday, December 16, 2014. The agreement ensures long-term management and sustainability of the South Westside Groundwater Basin. The partnership allows all the agencies to operate the basin and provide a new 20 billion gallon regional dry year groundwater supply.

"Daly City is proud to be part of a collaborative partnership that has demonstrated significant commitment toward diversifying local water supplies for the benefit of residents in the region," stated City Manager Patricia E. Martel.

Daly City provides drinking water from two sources, local groundwater from the South Westside Groundwater Basin and surface water supplies from the SFPUC.

The SFPUC’s Regional Groundwater Storage and Project is an important Bay Area groundwater supply project that will provide a water “savings account” to protect against future drought and earthquake emergencies.  This project completed environmental review in August 2014 and will begin construction in 2015. Once completed in 2018, this project, through 16 new recovery wells, stations, pumps and pipelines constructed in the Peninsula will provide 7.2 million gallons of water per day benefitting the 2.6 million people in the Bay Area who rely on the Hetch Hetchy Regional Water System.

The $113 million Regional Groundwater Storage and Recovery project balances the use of both groundwater and surface water in the Peninsula to increase available water supplies during dry years. During years of normal or heavy rainfall, the project will provide additional surface water to the partner agencies in San Mateo County in order to reduce the amount of groundwater pumped from the South Westside Groundwater Basin. Over time, the reduced pumping will create a groundwater savings account of up to 60,500 acre-feet of water or 20 billion gallons - a volume equivalent to that of the SFPUC's Crystal Springs Reservoir.

Within the City of San Francisco, the SFPUC is starting construction on the San Francisco Groundwater Supple Project to diversify the City's local water supply portfolio. This project will provide up to four million gallons of local, sustainable groundwater every day.

For updates and additional information on the Regional Groundwater Storage and Recovery and San Francisco Groundwater Supply Projects, visit