Find out how your backflow preventor works and get it tested annually with Chelan Backflow.  We are #1 rated in customer service and as a result we get to see our customers again.  Chelan backflow wants your repeat business and believes in keeping our water supply safe. how backflow preventors work

What Is A Backflow Preventer And How backflow preventors Work?

A backflow preventer is a device that’s installed on your home’s water pipes that allows water to flow in one direction but never in the opposite direction. Its sole job is to prevent drinking water from being contaminated due to backflow.