GAMA - Domestic Well Owners

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.

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:

Guide for Domestic Well Owners

• A PDF guide for domestic well owners, providing explanations for the basics of groundwater, private wells in California, and water quality testing, treatment, and protection.

Testing your well water

• Information relevant to private well testing, such as who to contact for well testing, which chemicals you may want to test for, and how to interpret results.
• Includes step-by-step checklist to help well owners evaluate the quality of their well water.
• AB 2454 resources contains a map witha guide to free well testing opportunities.

How to address well water quality problems?

• Information on options for addressing water quality problems, such as available treatment or filtration methods.

Additional domestic well information

• Additional links and resources made available from outside organizations and agencies that may be of use to domestic well users.

GAMA - OnLine Tools | California State Water Resources Control Board

• Webpage containing tools created by the GAMA program and the USGS to help users understand groundwater quality in California.

Guía para los dueños de Pozos Domésticos

• Una guía en PDF para propietarios de pozos domésticos, que brinda explicaciones sobre los conceptos básicos del agua subterránea, los pozos privados en California y las pruebas del agua, el tratamiento del agua y la protección de la calidad del agua.

LOOKING FOR WELL DRILLING RECORDS (WELL COMPLETION REPORT)?

For information on well drilling records (well completion reports) please refer to the Department of Water Resources site for DWR Well Completion Reports. This site contains the WCR Map Application which can be used to locate wells and their associated well completion reports. In addition, there are instructions for users to submit requests if they cannot find what they are looking for in the WCR Map Application.

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