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Backwater Valve Installation Subsidy


In the event of heavy rainfall, homes that do not have a backwater valve installed on their underground pipes are at a greater risk of sewer back up and basement flooding.

About Backwater Valve Installation

A backwater valve is a device installed on your sewer lateral that prevents wastewater from re-entering your house.

Animation illustrating the backwater valve in it's working state; allowing a one way flow from the home to the sanitary sewer, and it's closed state; which prevents sewer overload water from entering the home during a back up.

Apply to the program

  1. Download both the Enhanced Basement Flooding Prevention Subsidy Program application (PDF file) and the Enhanced Basement Flooding Prevention Subsidy Program waiver (PDF file) forms, or pick them up at the Halton Regional Centre.
  2. Follow additional steps pertinent to each different subsidy program (listed below).
  3. Submit a completed application and include the required documentation as outlined in the application form.
    • Scan and email to
    • Drop off in person at the Halton Regional Centre, 1151 Bronte Road, Oakville.
    • Submit by mail to:
      The Regional Municipality of Halton
      Public Works, Wastewater Services
      c/o Systems & Outreach Administrator
      Woodlands Operation Centre
      1179 Bronte Road, Oakville ON, L6M 4G3

Financial Support

Halton Region will cover 50% of the cost to install a backwater valve inside of your home, up to $675.