A backwater valve is a one way flow control valve installed in a drainage system, that under normal conditions allows the waste water to drain out of the system but if a reversal of flow should occur, the valve will be forced closed and protect the interior of the building from sewage backup. Every year thousands of homes are flooded with raw sewage and storm water causing millions in damages that could have been avoided with properly installed backwater valves.
Drainage Services has a Backwater Valve Subsidy Program to assist homeowners to install a backwater valve. Reimbursement only applies to qualified residential property owners. The valve is normally installed on either the main sewer line where the sanitary sewer exits the house or on various branch line locations to prevent sanitary sewer backup.
Maintaining My Backwater Valve
Check to make sure it isn't raining first.
Lift cover off backwater valve chamber in your basement floor.
Screw off black cap.
Attach short garden hose to laundry sink or near by water source.
Spray out the backwater valve to ensure the flap can move with ease..