A backflow prevention device is used to protect the potable water supply from contamination or pollution due to backflow. In water distribution systems, water is normally maintained at a significant pressure to enable water to flow from fixtures.  If there is a drop of pressure, contaminated water could endanger our water supply.

Each backflow prevention device must be tested/certified upon installation and recertified by a certified ASSE tester.  All backflow preventers must tested annually, bi-annually, or quarterly based on their regulations and degree of hazard.

Backflow prevention devices are required by the NJDEP in locations where cross connections between contaminants and the potable water supply are likely to be encountered.  This includes, but is not limited to, lawn sprinklers and irrigation systems, fire-protection systems, laboratories, chemical and industrial plants, boilers, hospitals, and waste-water treatment plants.  A letter may be sent to you from the state, water supplier, and/or township