How is Water Used in California and Where Does My Water Come From?
Water Use in California
Data source: California Water Plan Update
California has an extensive system of federal, state, and local water infrastructure for managing surface water and transporting it to the places where it is used (see map below). Groundwater, whether by itself or in conjunction with surface water, supports many public water systems and most small ones (systems that supply drinking water to residents).
Additional information about water use in California is available from work performed for DWR’s California Water Plan Update.