CVWD purchases 46 percent of its water through the Inland Empire Utilities Agency, who purchases water from the Metropolitan Water District of Southern California (MWD), a regional water wholesaler that delivers imported water from the State Water Project. State Water Project water originates in Northern California in the Sacramento-San Joaquin Delta, and makes a 400 mile journey to the CVWD service area. This water is treated at CVWD’s Lloyd W. Michael Water Treatment Plant, the largest conventional treatment plant in the region. The treated water is stored in reservoirs until it is needed by consumers.
The State Water Project, also known as the California Aqueduct, transports water 600 miles from Northern California to the southern portion of the state. It is owned and operated by the State of California and is the longest aqueduct system in the world, featuring 23 dams and reservoirs, 22 pumping plants that lift water to heights of 3,500 feet, and six power plants. The aqueduct is comprised of 473 miles of canals, 175 miles of pipeline and 20 miles of tunnels.