Basement flooding can result from heavy rain, melting snow, or damaged plumbing. However, one of the most disruptive and hazardous causes is sewer backup. This occurs when wastewater can’t flow properly into the main sewer system and instead begins to back up into your home. The result? Foul-smelling, contaminated water that poses serious health risks and can cause significant property damage.
As shown in the video below, a backwater valve is a vital defense against this type of flooding. It prevents sewage from re-entering your home during periods of heavy rainfall or overloaded city sewer systems.
To help homeowners take preventative action, the City of Toronto has introduced the Basement Flooding Protection Subsidy Program — offering financial assistance for backwater valve installations and other flood prevention measures.