Water Supply & Water Quality TCC

The Bay Area Water Supply and Conservation Agency (BAWSCA) represents the interests of 26 cities and water districts, and two private utilities that purchase water on a wholesale basis from the San Francisco Public Utilities Commission (SFPUC) regional water system. BAWSCA’s goals are to ensure high-quality, reliable water supply for the 1.6 million people residing in Alameda, Santa Clara, and San Mateo Counties that depend on the SFPUC regional water system. BAWSCA’s member agencies are the following.

Contra Costa Water District

The Contra Costa Water District (CCWD) serves approximately 500,000 people in north, central, and east Contra Costa County. CCWD acts as both a retail and wholesale water distributor, delivering treated drinking water directly to customers and both treated and untreated water to retail water agencies and major industries. Formed in 1936 to provide water for irrigation and industry, CCWD is now one of the larger urban water districts in California. It is a leader in water treatment technology and source water protection. CCWD’s wholesale customers include:

East Bay Municipal Utility District

Formed in 1923, the East Bay Municipal Utility District (EBMUD) supplies high-quality water and provides wastewater treatment for approximately 1.3 million people in a 325 square mile area covering parts of Alameda and Contra Costa Counties. EBMUD’s comprehensive water conservation and recycling programs are a key part of its commitment to water supply reliability. In fact, EBMUD has one of the largest conservation programs in California and was one of the first water utilities in the nation to develop a conservation supply master plan.

San Francisco Public Utilities Commission

The San Francisco Public Utilities Commission (SFPUC) owns and operates a regional water system that provides and delivers water to 28 wholesale customers and its retail customers. SFPUC also provides wastewater service and municipal power to the City of San Francisco. SFPUC serves the approximately 775,000 residents of San Francisco, as well as about 1.6 million residents of Santa Clara, Alameda, and San Mateo Counties. Currently, SFPUC is implementing an extensive capital improvement program to repair, replace, and seismically upgrade the water system’s aging infrastructure to ensure reliable delivery of its water supply. BAWSCA member agencies that are listed under the BAWSCA section of this document are SFPUC regional system customers and are served in part or wholly by the SFPUC regional system.

Santa Clara Valley Water District

The Santa Clara Valley Water District (SCVWD) manages wholesale drinking water resources for Santa Clara County and provides stewardship for the county’s vast watersheds, including its reservoirs, groundwater basins, and over 700 miles of streams. The SCVWD encompasses all of the county’s 1,300 square miles and serves the area’s 15 cities, 1.7 million residents, and more than 200,000 commuters. SCVWD continues to be a leader in water resources management with award-winning programs that are innovative and comprehensive. SCVWD provides a reliable supply of high-quality water to private and public water retailers, which are listed below.

Zone 7 Water Agency

The Zone 7 Water Agency (Zone 7) was formed in 1957 to manage groundwater, flood control, and water supplies for the Livermore-Amador Valley. Zone 7’s service area includes the Cities of Dublin, Livermore, Pleasanton, and the surrounding unincorporated areas, providing roughly 180,000 residents with a reliable supply of high quality water. By pursuing multiple water supply strategies and state-of-the-art technologies, Zone 7 is committed to ensuring the needs of its customers are met, even in times of drought. Zone 7’s wholesale customers include:

Marin Municipal Water District

The Marin Municipal Water District (MMWD) has been providing high-quality drinking water to residents in Marin County for nearly a century. MMWD currently serves approximately 190,000 people in a 147 square mile area of Marin County. To satisfy the demands of its water users, MMWD has been at the forefront of new water technologies, such as recycled and desalinated water. MMWD’s mission is to provide customers with reliable, high-quality water and to ensure the fiscal and environmental vitality of its service area for future generations.

Sonoma County Water Agency

Created in 1949, the Sonoma County Water Agency (SCWA) is a water wholesaler that provides drinking water to approximately 570,000 residents of Sonoma and Marin counties. In addition, SCWA provides sanitation and flood control services to residents of Sonoma County. SCWA is a regional leader in water resources management and was the first retail group in the state to sign the California Urban Water Conservation Council’s memorandum of understanding (MOU). SCWA’s wholesale customers include:

Solano County Water Agency

Formed in 1951, the Solano County Water Agency (Solano CWA) provides water supply and flood control services for cities and irrigation districts in Solano County and parts of Yolo County. Solano CWA leads efforts to protect rights to existing sources of water and works to secure new sources of water for water supply reliability and future growth. In addition to its irrigation customers, Solano CWA delivers untreated water to its wholesale customers, who serve more than 400,000 residents. These wholesale customers include:

The City of Napa has been providing water to its residents for more than 80 years. Today, the City of Napa manages local and imported supplies to provide safe, reliable, and high-quality water to 81,000 residents in and around the city limits. The City of Napa uses recycled water supplied by the Napa Sanitation District and has an extensive water conservation program aimed at reducing per capita demand by 10% by 2020. The City of Napa is committed to maintaining infrastructure and water supply reliability for current and future generations to maintain the unique quality of life in Napa.