How a Backwater Valve Works: Does Your Home Need A Backflow Valve?Backwater valves are installed in sewer lines to prevent sewage and wastewater from flowing back up into a home or business through the drains. When installed properly, a backwater valve will allow wastewater to flow out of the building while preventing it from flowing back in. Backwater valves are most often installed in the Toronto area where the sewer line is below the level of the foundation, such as in [...] Read furtherin:
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