An official website of the United States government.

Certification of Laboratories for Drinking Water

Contact Us About Certification of Laboratories for Drinking Water

Report an environmental violation
Report a Violation
Report possible violations of environmental laws and regulations.

If you want to have your drinking water tested find a certified laboratory in your state or territory.

Please use the form below to send us comments or questions. Be sure to include your e-mail address if you’d like a response.

Mailing Address:

U.S. EPA Office of Ground Water and Drinking Water
26 West Martin Luther King Drive
Mail Stop-140
Cincinnati, OH 45268