During heavy rain or a blockage in the municipal sewer system, sewage can surcharge or "build up" in pipelines causing sewage to flow backwards into basements. A backwater valve can help protect your property from back-ups. A backwater valve is a device installed to prevent sewage from flowing backwards into basement fixtures, such as dishwashers, sinks, showers, toilets, washing machines, or floor drains.
Sewer Backwater Valves
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