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Access Plumbing Blog

Back Water Valve

David Tougas - Monday, April 01, 2013

Basement flooding is unfortunately common in many parts of our province depending on where your home is built, the good news is it can be avoided with a backwater valve.


A backwater valve is a device that prevents sewage in an overloaded main sewer line from backing up into your basement. The valve automatically closes if sewage backs up from the main sewer. A properly installed backwater valve must be placed so that sewage backup will be stopped and not come out through other outlets in your basement, such as sinks, toilets, showers and laundry tubs.

  • Check the valve regularly and remove any material that may prevent the valve from operating properly. You will normally require a permit and inspection to install a back flow valve and sump pit. Since part of the basement floor will be dug up and since proper placement of these items is important. Hiring a plumber to do this work will ensure your backwater valve is installed properly, and will prevent flooding in the future.

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