Customer Service: 503-823-7770
GENERAL INFORMATION: 503-823-7404
The assemblies protect against hazards caused by backpressure or back-siphonage conditions that could cause pollutants or contaminants to backflow into the public water supply and/or the water user's system.
Backflow assemblies are required by law to be tested at least once a year to make sure they are functioning properly.
Non-mechanical means of backflow prevention