Nearly all of the water that is used in the Coachella Valley comes from a groundwater basin, or aquifer under the ground’s surface estimated to contain about 30 million acre-feet of water. DWA pumps water using wells and delivers it to local residents and businesses. In order to foster sustainability of the basin, DWA also replenish the aquifer with water from the State Water Project. Since, there is no direct pipeline from the State Water Project to Palm Springs, the Agency exchanges water with Metropolitan Water District. The water we use for replenishment comes from the Colorado River Aqueduct, which CVWD and DWA use to fill recharge ponds located at Whitewater and Mission Creek.