The South Bay Aqueduct, the first conveyance facility built for the State Water Project, supplies water to Alameda and Santa Clara counties.

To do so, the South Bay Aqueduct relies on 40 miles of pipes and canals to transport the water from the Sacramento-San Joaquin Delta.

Both the Alameda County Water District and Santa Clara Valley Water District use the water, which supplies such cities as Livermore, Dublin, Pleasanton, San Ramon, Freemont, Newark, Union City, Milpitas, Santa Clara and San Jose.