Overview of Backflow Prevention

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

Commercial Customers

Overview of backflow prevention requirements for commercial accounts.

Residential Customers

Approved Tester List

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

Information for Installers

Information for Testers

Forms and other documents for our Approved Backflow Testers.

How to Become a Tester

Documents & Forms

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

Backflow FAQs