Backflow Prevention Testing is necessary in keeping your home sanitary. Backflow is the undesirable reversal in the flow of water from a real or potential source of contamination back to the potable (or clean) water supply. Consider having a garden hose in a bucket of soapy water at your home, and having backflow event occur causing that soapy water to “backflow” into the drinking water portion of your home. Various types of backflow preventers exist for different applications and health hazard conditions, check state and other local administrative codes or other regulation on the correct backflow to use. The most common are reduced pressure backflow preventer and double backflow preventer valves. Backflow preventers are primarily used in sewer, wastewater, residential, sprinkler and irrigation backflow applications.
The term “Cross-Connection Control” is essentially is referring to backflow prevention. The definition of a Cross Connection is “A cross connection is the actual or potential connection between a non-potable substance or source.” Local authorities will dictate what types of backflow preventers may not be used depending on the backflow risk and health hazard. Sewer, irrigation, wastewater and residential are the main areas. There are two types of backflow, the first is back pressure where the pressure in the downstream piping is greater than the supply pressure, this is caused by a pump or elevation of water in a high rise building, the other type of backflow is back siphonage which is caused by sub-atmospheric pressure in the water system piping.
You must have a Sewer Backflow Prevention Device on your sewer system. In most places this is the law, everywhere else it’s just the smart thing to do. Almost everywhere the local authorities will dictate that certain types of backflow preventers may not be used with irrigation and sewer systems because they do not provide adequate protection. In some cases, the authorities will dictate the exact type of backflow preventer you MUST use.
Diliberto is certified by The American Society Of Sanitary Engineering for Plumbing and Sanitary Research to test Backflow Prevention Assembly Devices.