A Backwater Valve is the ONLY way to prevent hazardous back flow from city sewers entering your investment and causing damage or potential health risks. At Impact Plumbing we come prepared with the most state-of-the-art technology and experience to recommend the right flood protection for your investment. Our plumbers are industry trained in Backwater Valve installations to ensure your investment is protected from the damage basement flooding can cause. We are also licensed by the City of Toronto to provide rebates.
Fullport Backwater Valve
Adapt-A-Valve
How a Backwater Valve Works
A Backwater Valve is installed on the main line that transports sewage away from your house. Once properly installed, the backwater valve will only allow flow one-way. This guarantees sewage can only flow out, but not back in. This is achieved by a flap that opens one way towards the city sewer, and closes if any water tries to flow back towards the home.
- Backwater Valves protect your valuables from hazardous sewage water flooding back into your home.
Backwater Valves have been gaining popularity over the years due to the increase in flash flooding. This extreme weather can overloading the old Toronto sewer system with water and cause it to travel backwards into the dwellings it serves. This back flow not only causes terrible damage to your investment but also can create dangerous health hazards.
At Impact Plumbing we strive to always be using the most innovative technology, and thus seek out suppliers that we acknowledge to be the industry’s best. We are proud to use Mainline products for our Backwater Valve Installations.

Government Subsidy
The City of Toronto is offering subsidies to home owners to help assist with the cost of protecting their homes against flooding.Available subsidy = 80% of the invoiced cost up to a maximum of $1,250 regardless of the number of devices installed at the property, including eligible labour, materials, permit and taxes
Available subsidy = 80% of the invoiced cost up to a maximum of $1,250 regardless of the number of devices installed at the property, including eligible labour, materials, permit and taxes.
In consultation with a City of Toronto plumber, homeowners may determine that a Backwater Valve is required to manage the flow of sewage water to and from a property through the main line.
The following costs associated with Backwater Valve installations also qualify for the subsidy.
- Installation of an alarm for a Backwater Valve
- Replacement of existing Backwater Valve
For more information regarding eligibility click here. For a comprehensive brochure click here.