What is Backflow

“Backflow” is the undesirable reversal of the flow of water and other substances from any source into the distribution pipes of the drinking water system. There are two types of backflow conditions: back pressure and back-siphonage. Backflow puts our drinking water at risk of contamination.
Backflow preventers are required anywhere that a cross connection is made with a potable water source. Some examples are: Sprinkler Irrigation Systems, Soap injection system, Fire sprinkler systems, and Soda fountains, Mop sinks, Chemical storage tanks and hose bibs.