What is Backflow?

Backflow is the undesirable reversal of flow of water from its intended direction in any pipeline or plumbing system. Backflow is dangerous because it can allow drinking water in plumbing systems to become contaminated and unusable, possibly even deadly.

A cross-connection is any pipe, valve, fixture, etc., in a drinking water plumbing system that may allow the drinking water within the system to become contaminated or of questionable quality. Cross-connections can either be eliminated or protected by an air-gap or mechanical backflow preventer. Unprotected cross-connections are prohibited by State regulations, plumbing codes, and local codes.

What is a Backflow Preventer?

Backflow Preventers are mechanical plumbing devices installed in a plumbing system to prevent water from flowing backward in the system. A properly installed, tested, and maintained backflow preventer at the water service entrance to a building or property can reliably prevent the backflow of water of an unknown quality from flow back into the community water system.

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