Backflow preventer is a valve that protects the home from flooding, which is caused by the city sewer or storm line backing up into the your home.

These city sewers are sometimes overwhelmed with water from a storm, which the sewer lines cannot handle. As our climate changes, these backflow preventers are an even more important part in protecting your home.

Backflow preventers have a valve inside them that closes automatically as soon as the water comes back from the city, and will open again once the city line is clear.

If a backflow preventer is installed, then the downspouts around the home must be disconnected, because if the valve closes then the water will have nowhere to go but into your basement. It is also recommended to install a sump pump when installing a backflow preventer, also known as a backwater valve.

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