Backflow testing, why do we need it?

A backflow prevention device is used to protect potable water supplies from contamination or pollution due to backflow.

The Health and Risks of Contaminated Drinking Water
Clean drinking water is something that many of us take for granted. Public water supplies in the United States are generally safe and clean, but when water is contaminated, it could be deadly. From 2011 to 2012, according to the Centers for Disease Control and Prevention, in the US alone there were 32 drinking water associated outbreaks reported, which caused at least 431 cases of illness, 102 hospitalizations, and 14 deaths1. The US Environmental Protection Agency estimates that only a small percentage of total backflow incidents are actually reported2. Contaminants infect municipal water when pipes are improperly installed or when a hose is connected to a non-potable water source. The American Backflow Prevention Association estimates more than 100,000 incidents happen every day in the United States3. Not every incident results in illness, but every incident poses a threat. (reference from Wilkins zurn)

Backflow devices are used to protect the public potable water supply from the possibility of contamination or pollution by isolating within its customers' internal distribution system(s) or its customers' private water system(s) such contaminants or pollutants which could backflow into the public water supply system;
The risks to drinking water quality from backflow contamination incidents pose a constant threat—whether they’re nuisance, non-health hazards, or serious public health events. Plumbing codes mandate that potable water supplies be protected against backflow at all cross-connections. We offer the largest selection of backflow prevention solutions for any application.

City and state code require annual testing of every backflow assembly device. You should receive a letter from your municipality stating the due date and the device must be tested within 30 days of the due date or the city may turn off your water. After testing the device, City Wide completes and remits the proper certification paperwork to the city.

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