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The primary source of our water is the State Water Project.  This is a statewide system of reservoirs, canals, pipelines and pump stations that transports water  originating in California's Sierra Nevada mountains and delivers it to millions of residents in more arid locations of California.  Our connection to the SWP is the South Bay Aqueduct, which passes along the southern boundaries of Livermore and Pleasanton.  Alameda County Water District in Fremont and Santa Clara Valley Water District in the South Bay share the SBA with Zone 7.  From the Feather River Watershed into Lake Oroville, about 50 to 70 percent of our water supply flows to us via the Delta and South Bay Aqueduct.

Del Valle Reservoir, which is also a part of the SBA system, is another source of surface water.  In addition to providing storage of SWP water during low demand periods for use during high demand periods, local rainfall runoff is captured in this reservoir.

The Livermore-Amador Valley groundwater basin provides another important source of water.  Zone 7, as well as some of the local retail water agencies, use wells to draw water to augment the imported surface water supplies.
 

When it comes to preserving the water quality of the Livermore-Amador Valley Groundwater Basin, an ounce of prevention will be worth gallons of cure.  Gallons and gallons of pure, clean water are a vital part of our community's water supply and a major contributor to the prosperity of our Valley!