The undesirable reversal of flow of water or mixtures of water and other liquids, gases or other substances into the distribution pipes of the potable supply of water from any source or sources. This can occur through backpressure or backsiphonage.

Backpressure – Any elevation of pressure in the downstream piping system (by pump, elevation of piping, steam pressure, air pressure, etc.) above the supply pressure at the point of consideration, which would cause or tend to cause a reversal of the normal direction of flow.

Backsiphonage – A form of backflow due to a reduction in system pressure, which causes a sub-atmospheric pressure to exist in the water system.


Whether your annual backflow testing is coming due or past due, we would love for the opportunity to certify your device and keep you compliant for the calendar year. For pricing, visit our Services page

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Certified tester by the American Backflow Prevention Association (ABPA)

Certified Cross Connection Specialist by the American Backflow Prevention Association (ABPA)

Certified California SWRCB Water Distribution Operator

Certified Recycle Water Site Supervisor 

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