Why should I winterize my backflow preventer? Why should I winterize my backflow preventer?

A backflow preventer is designed to protect the water supply in your house from contamination, which could be caused by dirty water traveling up the pipes and into your drinking water. The pressure of your backflow preventer can be significantly reduced if the pipes freeze. Winterizing your backflow preventer will prevent the pipes from freezing or even bursting. While a frozen pipe will thaw out, a burst one will be costly to replace. For this reason, you should take steps to winterize your backflow preventer to stop contaminated water from going into your drinking water as a result of reduced pressure, as well as to protect yourself from costly repairs if the pipe bursts as a result of expanding ice.

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