California Drinking Water System Area Boundaries

The California State Geoportal provides service area boundaries of drinking water service providers, as verified by the Division of Drinking Water, State Water Resources Control Board. In order to provide an accurate data set of service area boundaries for California drinking water systems, the Division of Drinking Water of the California Water Resources Control Board (SWRCB DDW) has undertaken a project to vet and verify the data collected by the Tracking California's Water Boundary Tool (WBT).