Water Well Program



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


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 Department of Environmental Health and Quality (DEHQ) Office in San Diego at (858) 505-6688.


Well Permit Application


Licensed Well Drillers List

Water Well Frequently Asked Questions

Inactive Wells - Intent of Use Declaration Form


To Contact The Well Program Duty Desk:

(858) 505-6688




Private Well Water Quality Sampling Guidance

Well Disinfection 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