A Pressure Vacuum Breaker Backflow Prevention Device

Cross Contamination Potential

Non-potable water or chemicals are able to contaminate your local drinking water or the public drinking water supply as a result of backpressure or backsiphonage which are two types of backflow events. Backpressure occurs when the pressure in a system or set of equipment (such as an air conditioning unit) is greater than the pressure inside the drinking water line. Backsiphonage occurs when the pressure in the drinking water line drops due to fairly routine occurrences such as main breaks, nearby fires and/or unusually heavy water demands. Contaminants are sucked out of the equipment or system into the drinking water line or house water. 

Why Test Your Backflow

• To ensure compliance with Massachusetts State Law

• To eliminate your potential liability from a cross connection affecting the water supply

• To have your test results submitted to both yourself and your local public water supply annually
keeping you in compliance.

• Testing, cleaning, repairing and replacing of all makes and models