Through Richmond Hill’s Backwater Valve Subsidy Program, eligible residents can apply to receive up to $1,500 towards the cost of installation.

All subsidies are subject to available funding on a first-come, first served basis.

Why Install a Backwater Valve?

A backwater valve is designed to reduce the risk of basement flooding, such as those caused by overflowing sewers during severe weather events. When installed in the basement plumbing system, the backwater valve allows sewage to flow out but prevents it from coming back into the house should the sanitary system overflow.

Program Eligibility

• A plumber or drain contractor licensed by the Ontario College of Trades must carry out all.
• The property must be registered as a single-family residential, duplex, or triplex property within the City of Richmond Hill.
• The home must be an existing home. New homes in the planning stages or under construction are not eligible.
• The City must be satisfied with the disconnection of eavestrough downspouts from the sewer system.
• On old combined systems, the storm weeping tile must be disconnected from the sanitary system and directed into a sump pump which gets pumped to a safe location outside.
• Installation should be completed before applying for the subsidy.
• Invoice(s) must show a cost breakdown of all charges, the contractor’s Ontario College of Trades registry, the total amount paid and be clearly marked as ‘paid in full.’
• Subsidy application and supporting documentation must be received by the City of Richmond Hill within six months of the date of completion of the work.
• Eligible costs include labour, materials, permit fees and taxes.
• The backwater valve must be approved as per the Ontario Building Code.
• Labour provided by the homeowner is not eligible for reimbursement.
• Subsidies are provided one time only, per property.

Application Process

To apply for the Backwater Valve Subsidy Program, complete and submit the application form.

Visit the City’s Backwater Valve Subsidy Program page for more information.