Water Well Program



Effective 7/1/18: Private Well Water Quality Sampling Guidance

Information for New Well Owners in Sustainable Groundwater Management Act (SGMA)-mandated Groundwater Basins (Borrego Valley, San Diego River Valley, San Luis Rey Valley, and San Pasqual Valley) 

Additional Information Required for Water Wells Proposed in Sustainable Groundwater Management Act (SGMA)-mandated Groundwater Basins 


General Information

Water Wells are commonly used as the only potable water supply in the rural areas of San Diego County. The Land and Water Quality Division regulates the design, construction, modification, and destruction of water wells throughout San Diego County to protect San Diego County's groundwater resources. The installation or modification of wells within San Diego County requires owners to obtain a permit and adhere to well standards identified below.  For general information call the DEH Office in San Diego at (858) 565-5173.


Well Permit Application (includes Supplemental Application for wells in SGMA-mandated basins)


Licensed Well Drillers List

Water Well Frequently Asked Questions

Land Use Program Professional Staff Listing



Private Well Water Quality Sampling Guidance

Water Sample Providers 

Well Sealings Material Policy

California Water Well Standards: Bulletins 74-81 & 74-90

Well Sharing Guidelines


Other Resources:

Environmental Health Document Library

California Department of Water Resources