A backflow preventer stops backflow from occurring. It’s an automatic flap inside the main plumbing valve that senses when water or sewage is flowing in the wrong direction. Little floating devices on either side of the flap keep track of fluid levels. The flap automatically closes when the flotation device raises on the wrong side of the flap. When the water levels return to normal, the flap will open. Then your water flow will automatically be restored.

A backflow preventer also prevents the water from a commercial or residential building from backing up into the city water system. This keeps the public drinking water safe from contamination.

Our trained technicians at Wilson Plumbing and Heating can install the backflow preventer on the main sewer line connected to your home. We can install it in new construction or retrofit it in an existing home. Then you will be protected from heavy rains that can cause the city sewer system to experience overflow. With a backflow preventer, rainwater and sewage will not be allowed to enter your home’s plumbing system.

If your home has a basement, or if your ground floor is close to street level, you have an elevated risk of sewer backup. It’s important to make sure your home is protected, and we can help you eliminate the risk by installing a backflow preventer.