Backflow Assembly Testing and Cross Connection
Learn about cross connections and how they can create health hazards if they are uncontrolled, which may contaminate drinking water systems.
Find out more about lawn irrigation systems and backflow prevention.
Discover how you can prevent your drinking water from becoming contaminated.
Learn about cross connection control for lawn irrigation systems.
Learn about cross connection control for fire sprinkler systems.
Print out a copy of the District's recommended backflow assembly test report.
Find a state certified backflow assembly tester to test your backflow assembly.
Use our convenience list to find state certified Backflow Assembly testers who have expressed an interest to test in our area.
Find out more about the District's cross connection control program.
The District's backflow assembly installation standards show what we require when you put in a new assembly.
Find out about the Washington State regulations related to cross connection.
Discover cross connection information on the Washington Department of Health’s Office of Drinking Water Cross Connection website.
The U.S. Environmental Protection Agency also has a website on cross connection.