Sump Pump & Backwater Valve Installation — Bathurst Manor, North York
Flood Prevention
Problem: A homeowner in Bathurst Manor had experienced three basement floods in four years, always during heavy spring rainfall. The finished basement — including a home office and bedroom — sustained over $35,000 in cumulative water damage. Insurance was threatening to drop coverage. The home had no sump pump and no backwater valve.
Diagnosis: The home, built in 1965 on heavy clay soil, had foundation weeping tile connected directly to the sanitary sewer — a common configuration in North York homes of that era. During heavy rain, the sewer system was overwhelmed and sewage backed up through the floor drain into the basement. Simultaneously, groundwater was seeping through the foundation with no sump pump to redirect it.
Solution: We installed a full flood prevention system: interior backwater valve on the main sewer line to prevent backflow, a new sump pit with primary pump and battery backup pump, and disconnected the weeping tile from the sanitary sewer to route it to the new sump system. We also installed a water alarm sensor in the sump pit for early warning. We handled the City of Toronto permit application and scheduled the required building inspection.
Outcome: No flooding in two years since installation, including through two major storm events. The homeowner received $3,200 back from the City of Toronto Basement Flooding Protection Subsidy Program. Insurance coverage was maintained.