Sanitary Backwater Valve Subsidy Program

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Municipal Office

395 Mulock Drive P.O. Box 328 Station Main, Newmarket, Ontario
L3Y 4X7
905-895-5193

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Qualified Newmarket residents can receive up to $500 to install a backwater valve to prevent flooding in their home.

It is recommended that homes that are situated in areas that maybe subject to a higher risk of flooding should install a sanitary backwater valve, which can help significantly reduce the risk of flooding. 

The Town is providing select homes in Newmarket an incentive (up to $500) to install a sanitary backwater valve on a first come, first serve basis. 

How the Sanitary Backwater Valve Subsidy Program Works? 

  1. Contact a licensed plumber or drain contractor to determine if a sanitary backwater valve is suitable for your home and the Town’s sewage system.
  2. Once it has been determined that your home is suitable, have a licensed plumber or drain contractor install a sanitary backwater valve. (Please note that a permit ($185) is required from the Town of Newmarket to install a sanitary backwater valve).
  3. Obtain a Plumbing Permit through the Building Department from the Town of Newmarket and apply for an incentive for up to $500 to cover the costs of installing an approved sanitary backwater valve.

Sanitary Backwater Valve Subsidy Program Requirements 

Your home must meet the following criteria to apply for the Sanitary Backwater Valve Subsidy Program: 

  • The property must be registered as a single-family residential property within the Town of Newmarket.
  • The subsidy program is only available to existing homes, not new homes in the planning stages or currently under construction.
  • The property must have its eavestrough downspouts properly disconnected from the Town’s sanitary sewer system, wherever possible, to the satisfaction of the Town.
  • A qualified licensed plumber or drain contractor must be hired to perform the installation of these sanitary backflow devices.
  • A Plumbing Permit and approved inspection must be obtained for backwater valve installations.
  • All installations must be completed before the applicant applies for the subsidy.
  • Invoice(s) must show a cost breakdown of all charges, the plumbing or drain license number of the contractor, the total amount paid, and clearly marked as “paid-in-full.”
  • The backwater valve must be approved for residential use by the Ontario Building Code.
  •  All documents submitted for the Sanitary Backwater Valve subsidy program must be original – no photocopies will be accepted. Once the application  is processed, the original invoice(s) will be returned to the property owner.
  • Subsidies for eligible work are subject to available funding and are provided on a first come, first-served basis.
  • Subsidies are provided one time only, per property, and on a no-fault basis.
  • Labour provided by the homeowner is not eligible for reimbursement under this program.
  • Reimbursement will not be provided for any interior restoration, such as drywall, paint or finished flooring, or any exterior restoration work.

For more information, please call the Town of Newmarket 905-895-5193.