Basement Flooding Rebates Across Toronto and the GTA
Protecting a basement from flooding can involve more than one type of work. One property may need a backwater valve to help protect against reverse sewer flow. Another may need a sump pump and changes to the foundation drainage system. An older sewer lateral may need repair before any protective device makes sense at all.
Depending on where the property is located, some of that work may qualify for a municipal or regional rebate.
The important part is that the programs are not all the same.
Toronto has its own Basement Flooding Protection Subsidy Program. Mississauga has a separate program that deals with specific stormwater and foundation-drain measures. Peel Region offers a sanitary backwater-valve rebate that can apply in Mississauga and Brampton. Vaughan has its own backwater-valve subsidy, while Oakville homeowners fall under Halton Region’s expanded Basement Flooding Prevention Subsidy Program.
At UPR (Underground Plumbing Repair), we help homeowners understand how the plumbing or drainage work relates to the available program, what needs to happen before installation and what documentation may be required afterward.
The rebate should never determine what your house needs. We determine the drainage problem first, then see whether the right solution also happens to qualify for financial assistance.
Program information on this page was reviewed in September 2026. Rebate amounts, eligibility requirements and available funding can change, so the official municipal or regional program should always be checked before work begins.
Toronto Basement Flooding Protection Subsidy Program
Toronto significantly expanded its Basement Flooding Protection Subsidy Program in 2026. For eligible work completed on or after November 12, 2025, qualifying residential property owners can now receive up to $6,650 per property across the eligible categories.
The program currently provides up to 80% of the invoiced cost, to a maximum of $500, for a one-time home plumbing assessment. Eligible backwater valve installation or replacement can receive up to 80%, to a maximum of $1,600 per device, with as many as two qualifying devices where the program requirements are met.
An eligible sump pump installation or replacement can receive up to 80% of the invoiced cost, to a maximum of $2,250. Toronto also provides a separate subsidy for eligible sump-pump battery backup power of up to 80%, maximum $300.
Foundation-drain or weeping-tile pipe severance and capping can qualify for up to 80%, maximum $400.
That does not mean every Toronto property automatically qualifies for every amount. Property eligibility, permits, inspections, invoices and the way the existing plumbing is configured all matter. Toronto also applies older subsidy limits to eligible work completed before November 12, 2025, so the date of the work is important.
The current program requirements and application information are available directly from the City of Toronto Basement Flooding Protection Subsidy Program.
For homeowners in Etobicoke, North York, Scarborough, East York and other Toronto neighbourhoods, this is the same City of Toronto program. Those areas do not require separate rebate programs simply because the neighbourhood name changes.
Mississauga Basement Flooding Prevention Rebate
Mississauga has taken a different approach to basement-flooding assistance and currently offers rebates of up to $7,500 for qualifying flood-prevention improvements.
The City currently lists up to $6,000 for an eligible sump-pump system, up to $1,000 for foundation-drain or weeping-tile pipe capping, up to $500 total for eligible downspout disconnection, and up to $1,500 for an eligible storm-lateral backwater valve.
That last part deserves attention because a storm-lateral backwater valve and a sanitary backwater valve are not necessarily covered by the same program.
Mississauga’s flood-prevention program deals with specific stormwater measures. Peel Region separately administers a sanitary backwater-valve rebate, which we explain below.
Another major difference is timing. Since February 12, 2025, Mississauga requires pre-approval before eligible basement-flooding prevention measures are installed. This is not a program where a homeowner should complete the entire project and then discover afterward that pre-approval was required.
If you are considering a sump pump installation in Mississauga or a qualifying backwater valve installation, the rebate question should be addressed while the work is still being planned.
Current eligibility rules and the pre-approval process are available from the City of Mississauga Basement Flooding Prevention Rebate Program.
Peel Region Sanitary Backwater Valve Rebate
Peel Region currently offers a separate rebate specifically for eligible sanitary backwater-valve installations.
The Region provides 60% of the invoiced amount, up to a maximum of $1,500 including tax, for an eligible sanitary backwater valve. This program can apply to qualifying properties within Peel Region, including Mississauga and Brampton.
The word sanitary matters here.
This rebate applies to a valve connected to the sanitary lateral. It is different from the Mississauga program covering an eligible backwater valve installed on a stormwater lateral. A homeowner in Mississauga could therefore hear about two different $1,500 backwater-valve programs without realizing they apply to two different drainage systems.
That is exactly why the underground layout needs to be understood before anyone starts talking about rebate amounts.
Peel also requires the appropriate municipal building permit before installation and an approved inspection afterward. The rebate is not simply based on buying a valve and submitting an invoice.
Current program details are available directly from the Peel Region Sanitary Backwater Valve Rebate Program.
For Brampton homeowners, Peel Region is particularly important because this regional sanitary backwater-valve program is the relevant rebate to investigate when qualifying work is being considered.
Vaughan Backwater Valve Subsidy
Vaughan currently operates its own sanitary backwater-valve subsidy program for qualifying homeowners.
The City provides assistance of up to $750, including eligible labour, materials, permit fees and taxes, toward installation of an approved sanitary backwater valve.
Vaughan states that the valve must be installed by a qualified plumbing professional, and the program is subject to available funding on a first-come, first-served basis. That last point means homeowners should not assume money will still be available simply because the property otherwise appears eligible.
The current requirements and application are available directly from the City of Vaughan Sanitary Back-Water Valve Program.
As with every program on this page, the rebate comes after the plumbing question. A backwater valve helps address reverse sewer flow; it does not repair roots, a collapsed sewer or another structural problem inside the private drain.
Oakville and the Halton Region Basement Flooding Prevention Subsidy
Oakville homeowners have access to Halton Region’s Basement Flooding Prevention Subsidy Program, which was significantly expanded in 2025.
For eligible work completed after July 15, 2024, Halton currently offers up to 100% of eligible costs, maximum $6,500, for qualifying weeping-tile disconnection combined with sump-pump installation.
The Region also offers up to 50% of eligible costs, maximum $1,600, for a qualifying backwater-valve installation, and up to 50%, maximum $4,000, for eligible private-side wastewater lateral lining or repair.
Halton’s program can also provide up to 100%, maximum $900, for eligible downspout disconnection and up to $6,500 for certain qualifying exterior storm-drain disconnection work.
Backwater-valve eligibility also depends on factors such as how stormwater connections relate to the wastewater system, and an applicable local building permit and final inspection are required.
Current information is available through the Halton Region Basement Flooding Prevention Subsidy Program.
For Oakville homeowners, this is the regional program to review rather than looking for a separate City of Toronto- or Mississauga-style program.
Why Two Similar Houses Can Qualify for Different Rebates
Rebate programs can become confusing because homeowners understandably focus on the device: a sump pump is a sump pump, and a backwater valve is a backwater valve.
Municipalities look at more than the device.
They may look at what pipe the equipment is connected to, whether the property has a storm or sanitary lateral, whether weeping tiles are connected to the sewer system, whether downspouts have been disconnected, whether the property has already received a subsidy and whether permits or pre-approval were obtained before work started.
That is why two homes on the same street can sometimes have different eligibility.
It is also why a $1,500 “backwater valve rebate” in one program cannot automatically be compared with another $1,500 program without understanding which drainage system each one covers.
Good flood-protection planning starts underground. Once we understand the plumbing, we can identify which program is actually relevant.
Do Not Start the Work Before Checking the Rules
This may be the most important advice on this entire page.
Some programs require pre-approval. Some require a building permit before installation. Some require an inspection afterward. Some require specific documentation from the contractor, and some place restrictions on which contractors can perform certain subsidy-eligible work.
Missing one of those steps can affect eligibility even if the physical installation itself is excellent.
Mississauga, for example, requires pre-approval for new applications before the eligible flood-prevention work is installed. Peel requires the applicable municipal permit for sanitary backwater-valve work. Toronto has its own permit, inspection and documentation requirements. Halton has specific contractor and drainage-system requirements depending on the subsidy category.
That is why rebate planning belongs at the beginning of the project instead of becoming a paperwork exercise after the concrete has already been poured back.
How UPR Helps With Rebate-Related Work
UPR installs and services many of the systems these programs are designed to support, including backwater valves, sump pumps, battery backup systems, underground drainage and sewer repairs.
When a homeowner is considering work that may qualify for a rebate, we can help make the plumbing side of the project clear. That can include identifying what system is being worked on, preparing an understandable scope of work, coordinating permit or inspection requirements that form part of our work and providing detailed invoices and documentation for the installation.
What we do not do is guarantee that a municipality or region will approve a rebate.
The final decision belongs to the program administrator, and eligibility can depend on factors outside the contractor’s control, including previous subsidies on the property, homeowner eligibility, available funding and documentation requirements.
We would rather tell you that before the work begins than promise money that somebody else ultimately decides whether you receive.
The Rebate Should Support the Right Work, Not Create the Wrong Work
A generous subsidy can make an important flood-protection project much easier to afford, but the rebate should never become the reason a particular system is installed.
A house with a healthy sanitary sewer does not need sewer repair because another municipality happens to subsidize it. A property experiencing foundation water does not suddenly need a backwater valve because there is money available for one. A basement experiencing sewer backup should not automatically receive a sump pump without understanding where the water is actually coming from.
We diagnose the house first.
If the right solution qualifies for financial assistance, excellent. The homeowner gets better protection and may recover part of the investment.
That is exactly how these programs should work.
Rebate Programs Change, but Good Planning Does Not
Municipal flood-protection programs have changed significantly over the last few years, and they will continue to change. Funding can increase, application procedures can be rewritten and eligibility requirements can be adjusted as cities respond to major storms and changing infrastructure needs.
That is why UPR will continue reviewing the programs listed here and updating this page as the municipalities and regions publish changes.
Before beginning rebate-related work, we still recommend checking the official program linked in the appropriate section above. That way the homeowner, contractor and municipality are all working from the same current requirements.
If you are considering a backwater valve, sump pump, weeping-tile disconnection, sewer repair or another basement flood-protection upgrade and want to understand whether a current program may apply, call UPR.
We will start with the house, understand the drainage system and help you determine the right path forward before the work begins.
UPR — We don’t fix. We solve.