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GAMA - Well Owners - Water Quality in Private Domestic Wells

Domestic well water is typically used by single family homeowners for private use and consumption. It is the responsibility of the well owner to ensure that their domestic well water is safe, since the State of California does not regulate domestic well water quality.

You may have concerns about the water from your domestic well. The information provided on this topic is divided into the following areas to help you find important information about domestic wells:

For more information on public drinking water systems visit the Division of Drinking Water (DDW) Program website  or contact a DDW Water District.

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State Water Resources Control Board
Division of Water Quality
Groundwater Ambient Monitoring & Assessment Program (GAMA)
1001 I Street, 15th Floor
Sacramento, CA 95814

Telephone: (916) 341-5577
Fax: (916) 341-5463