Groundwater Info Center
Well Information

DWR estimates there are one to two million water wells in California, with 10,000 to 15,000 new wells, on average, constructed each year. They range from shallow hand dug wells to carefully designed large production wells drilled to great depths.

California Well Standards, published as DWR Bulletin 74, represent minimum standards for well construction, alteration, and destruction to protect groundwater. In California, cities, counties, and water agencies have regulatory authority over wells and can adopt local well ordinances that meet or exceed the statewide Well Standards. >>For More Information...





When a well is constructed, modified or destroyed, the law requires the drilling contractor to submit a Well Completion Report to DWR. DWR has launched a new Online System for Well Completion Reports (OSWCR) for submitting Well Completion Reports. In June 2015, Senate Bill 83 amended California Water Code §13752 to allow public access to Well Completion Reports. >>For More Information...




Private well owners and others who seek a deeper understanding of water wells are encouraged to visit the Well Basics page. >>For More Information...