Backflow Prevention

Overview of Backflow Prevention

General information about our backflow prevention program, including an explanation of backflow and our requirements.

Overview of backflow prevention requirements for commercial accounts.

Learn more information for residential customers.

Choose a tester from this list to test your backflow preventer. We do not accept tests from testers who are not on this list.

Review information for installers.

Forms and other documents for our Approved Backflow Testers.

Learn about how to become a tester.

Policies, installation guidelines, list of approved testers, and other documents related to our Backflow program.

Review the top questions about backflow.