Basement Flooding Rebates & Subsidies in Ontario
Municipalities across Southern Ontario offer rebates for certain basement flood-protection upgrades including sump pumps, backwater valves, weeping-tile disconnection and sewer work. This guide summarizes programs we could verify directly with municipal and regional sources for 2026.
Current Flood-Protection Programs
Select your municipality below. Where a regional program applies to several cities, we have grouped those municipalities together rather than pretending each city operates a separate rebate.
Do not start rebate-driven work until you understand your city's rules.
Some programs require pre-approval, a building or plumbing permit, inspections, specific drainage conditions, licensed contractors or photographs before work is covered. Starting too early can make an otherwise eligible project ineligible.
Basement Flooding Protection Subsidy Program
Expanded program effective May 1, 2026.
- Eligible residential properties include single-family, duplex, triplex and fourplex homes.
- Eligible contractors and subcontractors must hold appropriate valid City of Toronto business licences.
- A permit and inspection are required for eligible backwater-valve installations.
- Applicants generally have two years after eligible work is completed to apply under the expanded program.
- Funding is first-come, first-served and subject to annual City funding.
Basement Flooding Prevention Rebate
A separate City of Mississauga flood-prevention program.
- As of February 12, 2025, planned prevention work must receive City pre-approval to qualify.
- Work must be completed by a qualified contractor appropriately licensed in Ontario.
- Sump-pump eligibility involves specific weeping-tile, capping and drainage requirements.
- Some work requires a building permit.
- Final approval must generally be requested within six months after pre-approval.
There is also a Peel sanitary backwater-valve rebate.
Peel Region separately offers 60% of invoiced eligible costs up to $1,500 for a qualifying backwater valve installed on a sanitary lateral. The Mississauga program's listed backwater valve measure applies to a storm lateral. Confirm your plumbing configuration and program rules before assuming both programs apply.
Peel Region Sanitary Backwater Valve Rebate
Regional program for qualifying residential properties in Peel.
- Valve must be installed at an eligible residential property in Peel Region.
- The qualifying program applies to valves installed after July 16, 2024.
- The valve must serve a single dwelling unit.
- A qualified licensed contractor must install the valve.
- A local municipal building permit is required before installation.
- The installation must pass municipal inspection.
- Limit of one rebate per residence every 10 years.
Halton Region Basement Flooding Prevention Subsidies
Enhanced subsidy amounts approved in 2025.
- Property must be located within Halton Region.
- Home must be connected to Halton's municipal wastewater system.
- Homes using septic systems are not eligible.
- Backwater-valve subsidy requires evidence regarding stormwater connections to the wastewater system.
- A local building permit and successful final inspection are required for qualifying backwater-valve work.
- Applications are generally required within one year after completion of eligible work.
Important: We do not add every Halton measure together and advertise the resulting number as a guaranteed "$19,500 rebate." Different measures address different plumbing configurations and have separate eligibility requirements.
Protective Plumbing Program
Grant and loan assistance for eligible protective plumbing improvements.
- Backwater-valve installation and assessment.
- Downspout disconnection.
- New sump-pump installation when completed in conjunction with a backwater valve.
- Required work must meet City permit, contractor and inspection requirements.
Private Plumbing Protection Rebate Program
Program currently extended through April 30, 2027.
Backwater Valve Subsidy Program
Financial assistance for qualifying backwater-valve installations.
- Single-family, duplex or triplex residential property.
- Existing homes only.
- Appropriate licensed plumber or drain contractor required.
- A City building permit is required before installation.
- Installation must remain accessible for City inspection.
- Application must be received within six months after completion.
- One subsidy per property.
Sanitary Back-Water Valve Subsidy
Assistance toward an approved sanitary back-water valve installation.
- Labour.
- Materials.
- Permit fees.
- Taxes.
- Installation must be completed by a certified plumber.
- Subsidies are subject to available funding and first-come, first-served availability.
Flood Alleviation Program — FLAP
Flood-protection assistance for eligible older residential homes.
- Backwater valves.
- Weeping-tile disconnection from the sanitary sewer.
- Reconnection to an appropriate sump-pump system.
- Program applies to qualifying single-detached and semi-detached homes built before 2012.
Following significant flooding in July and August 2026, the City also announced development of an Emergency FLAP program with substantial additional funding. Check the City's current application instructions before proceeding.
Weeping Tile Removal Assistance Program — WRAP
Program aimed at disconnecting foundation drainage from sanitary sewers.
- Eligible single-family detached or semi-detached homes in the urban area.
- Property must be connected to the municipal sanitary sewer.
- Program approval is required before eligible work proceeds.
- Licensed plumber required.
- Building permit must be obtained before work starts.
- Completed work requires City inspection.
- Funding is generally available once per property and subject to available funds.
Basement Flooding Grant Program
Financial assistance for eligible basement-flooding prevention measures.
- Eligibility is determined by the City based on flooding risk and property conditions.
- Homeowners must not begin grant-related construction before the City's approval process.
- Existing sump-pump maintenance, repair and replacement are not generally covered.
- The program specifically states that conventional waterproofing and crack repair are not funded.
Basement Flooding Prevention Grant Program
Existing program currently undergoing updates.
As of September 9, 2026, the City of Brantford states that new applications are not currently being accepted while the program and application requirements are updated.
The City indicates that updates are expected to be completed by September 30, 2026.
- Program historically covered 80% of eligible costs up to an overall maximum of $5,000.
- Eligible work included backwater valves, new sump systems with battery backup and eligible sewer/drainage measures.
- These amounts may change when the revised program reopens.
A Flood-Protection Rebate Is Not Necessarily a Waterproofing Rebate
Municipal programs generally target infrastructure that reduces sewer backup, improper stormwater connections or groundwater entering municipal sewer systems. They do not automatically cover every type of basement leak repair.
Commonly Eligible Measures
Often Not Covered
How to Protect Your Rebate Eligibility
Municipal rules differ, but these four steps prevent many of the most common rebate mistakes.
Identify the Water Source
Determine whether the problem is groundwater, foundation leakage, surface runoff or sewer backup. Different problems require different systems.
Confirm the Program
Review your municipality's current official requirements before authorizing work. Check whether pre-approval is mandatory.
Obtain Permits
Where required, secure the building or plumbing permit before installation and arrange any necessary municipal inspection.
Keep Documentation
Retain itemized invoices, proof of payment, contractor details, permits, inspection records, photos and municipal approval documents.
Match the Repair to the Actual Water Problem
Backwater Valve Installation
Designed to reduce the risk of sewage flowing backward through a qualifying sewer lateral during a surcharge event.
Learn about backwater valves →Sump Pump Installation
Moves water collected by an appropriate foundation drainage system away from the basement and foundation.
Learn about sump pumps →Basement Waterproofing
Foundation leaks, wall seepage and drainage failures may need waterproofing even when the work does not qualify for a municipal subsidy.
Explore waterproofing services →Basement Flooding Rebate FAQ
How much is the Toronto basement flooding subsidy in 2026?
Does Mississauga offer its own basement flooding rebate?
What rebate is available in Brampton?
How much does Halton Region provide?
Do municipalities rebate exterior basement waterproofing?
Do I need a permit for a backwater valve?
Can I install the equipment first and apply afterward?
Does receiving a rebate guarantee my basement will never flood?
Can Canada Waterproofers guarantee that my rebate will be approved?
Before You Build Around a Rebate, Make Sure the System Actually Solves the Problem.
A backwater valve will not repair a leaking foundation wall, and a sump pump will not stop sewage from backing up through an unprotected sewer connection. We assess where the water is coming from first, then recommend the appropriate waterproofing, drainage or plumbing solution.