Sump Pump Installation in Ontario
What the pump does, when a home needs one, where it is allowed to discharge, who is licensed to install it — and what your city pays toward it.
Program facts verified September 4, 2026 against toronto.ca. Programs can change at any time — confirm with the City before signing a contract.
Quick answer
A sump pump removes the groundwater your weeping tile collects and pumps it away from the foundation before it can rise into the basement. Replacing a pump in an existing pit runs $800–$1,750 installed in Toronto; a first-time install with a new pit runs $2,000–$4,200. Toronto pays 80% of the cost up to $2,250 for the pump and $300 for battery backup ($2,550 combined); several other Ontario cities pay too — the list is below.
What a sump pump actually does
Around most Ontario foundations runs a perforated pipe — the weeping tile, or foundation drain — that collects groundwater at the footing. That water has to go somewhere. In older homes it was often piped into the sanitary sewer; today Toronto’s foundation drainage policy expects groundwater to be managed on the property, and the Ministry of the Environment strongly discourages sanitary connections. A sump pit collects the weeping-tile water and the pump lifts it out and away from the house.
It is one of three distinct protections, and it helps with only one kind of flooding. The Institute for Catastrophic Loss Reduction separates basement flooding into overland water coming in through doors and windows, infiltration through cracks and joints, and sewer backup through the drains. A sump pump addresses infiltration. Sewer backup needs a backwater valve; overland water needs grading and downspouts fixed first.
When a home needs one
- The weeping tile is being disconnected from the sewer. Halton and Markham fund exactly this — disconnect the foundation drain and add a sump pump to take the water instead; Mississauga funds the sump pump and the foundation-drain capping as separate measures.
- Water shows up at the wall–floor joint after heavy rain. That is groundwater pressure at the footing — the weeping tile is overwhelmed or has no outlet.
- There is a pit but no pump, or a pump with no battery. The storms that flood basements are the storms that cut power. A pump without backup stops exactly when it is needed.
- The home sits low, near a creek or in an area with a history of basement flooding. Assume a high water table and size the pump and the battery for it.
Pedestal, submersible, and the battery
A submersible pump sits inside the pit: quieter, stronger, and what most Toronto installations use. A pedestal pump keeps its motor above the pit and is the cheapest option. The choice that matters more is the battery backup. Toronto added a separate $300 subsidy for it in the May 1, 2026 expansion — including retrofits to a pump you already have — because an outage during a storm is the normal case, not the exception.
Where it is allowed to discharge
Outside, onto the ground — not into a sewer. Toronto’s subsidy requires the discharge to empty onto a permeable surface such as a lawn, garden or gravel at least two metres from the foundation wall, and asks for photos of the pump and the exterior discharge pipe with the application. Routing matters: a discharge line that dumps water beside the foundation sends it straight back to the weeping tile and the pump runs in a loop.
Who is licensed to install it
A sump pump is plumbing and drainage work. For Toronto’s subsidy the installer must hold a City of Toronto business licence in one of four classes — T94 Plumbing Contractor, T92 Plumbing and Heating Contractor, T87 Drain Contractor or T85 Building Renovator. Other cities set their own rule: Hamilton pays the full grant only through its pre-qualified contractor list; Halton (Oakville, Burlington, Milton) requires a building permit and a final inspection; Ottawa requires a permit and inspection and reimburses the permit fee in full; Markham requires City pre-approval before installation. Verify the licence yourself on the city’s site before signing — the subsidy application will check it too.
What it costs
| Pump replacement into an existing pit, installed | $800–$1,750 |
| New pit + pump (first-time install) | $2,000–$4,200 |
Toronto installed prices, verified against contractor price guides. Battery-backup systems, discharge extensions and what the subsidy leaves you paying are on the sump pump cost page.
What your city pays toward it
| TorontoBasement Flooding Protection Subsidy Program | 80% of cost: pump up to $2,250, battery backup up to $300 — $2,550 combined |
| BurlingtonEnhanced Basement Flooding Prevention Subsidy Program | Weeping tile disconnection + sump pump (100% of cost, up to $6,500 for work completed after July 15, 2024; $5,000 for earlier work) |
| HamiltonProtective Plumbing Program (3P) | Sump pump (installed in conjunction with a backwater valve) |
| MarkhamPrivate Plumbing Protection Rebate | Weeping tile disconnection with sump pump installation — up to $5,000 |
| MiltonEnhanced Basement Flooding Prevention Subsidy Program | Weeping tile disconnection + sump pump (100% of cost, up to $6,500 for work completed after July 15, 2024; $5,000 for earlier work) |
| MississaugaBasement Flooding Prevention Rebate | Sump pump installation — up to $6,000 |
| OakvilleEnhanced Basement Flooding Prevention Subsidy Program | Weeping tile disconnection + sump pump (100% of cost, up to $6,500 for work completed after July 15, 2024; $5,000 for earlier work) |
| OttawaResidential Protective Plumbing Program (RPPP) | Sump pump with battery backup in an existing pit (primary or secondary) — up to $1,500Sump pump with battery backup and construction of a sump pit (primary or secondary) — up to $3,000 |
Amounts are read from our program registry, each re-verified against the city’s official page (dates in the sources below). Every other Ontario city: all municipal programs.
Getting it subsidised, in order
- Confirm your city’s program and its rule on who may do the work (licence class or pre-qualified list).
- Get two itemised quotes; ask each contractor where the discharge will run and whether a permit is required.
- Have the licensed contractor install the pump — and the battery backup at the same visit.
- Keep the itemised, paid invoice and photograph the pump and the exterior discharge pipe.
- Apply within the window — in Toronto, two years from the installation date.
Next step
Sump pump work for your home
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Do I need a sump pump if I already have a backwater valve?
They solve different problems. A backwater valve stops sewage from backing up into the basement through the drains during a sewer surcharge. A sump pump removes groundwater collected by the weeping tile before it can rise into the basement. A home in a low or wet area often needs both, and Toronto’s subsidy pays toward each separately.
Pedestal or submersible?
A submersible pump sits inside the pit, runs quieter and handles more water; it is what most Toronto installations use. A pedestal pump has its motor above the pit and is the cheapest option. Either way, the part that matters most in a storm is the battery backup, because outages and floods arrive together.
Where does the sump pump discharge?
Outside, onto the ground — not into a sewer. Toronto’s subsidy requires the discharge to empty onto a permeable surface such as a lawn, garden or gravel at least two metres from the foundation wall, and the City’s foundation drainage policy expects groundwater to be managed on site rather than sent to the sanitary sewer. Your contractor should route the discharge line so the water cannot run straight back to the foundation.
Do I need a permit?
It depends on the city and on whether a new pit is being cut. Toronto’s subsidy asks for photos of the installed pump and the exterior discharge pipe with your application; Hamilton’s program requires a building permit and City inspection for the backwater valve the pump is installed with. Ask the contractor what your municipality requires before the work starts — the subsidy application will ask for the paperwork.
How long does installation take, and what does the subsidy cover?
Replacing a pump in an existing pit is typically a half-day job; a first-time install with a new pit takes longer because the slab is cut and a basin is set. Toronto’s subsidy covers labour, materials and taxes on the invoice, at 80% up to the per-item maximum, and you apply within two years of the installation date.
Related
Sources
- City of Toronto — Basement Flooding Protection Subsidy Program. Page modified June 18, 2026 (re-read September 4 and 11, 2026). Used for: eligible sump pump work, 80% / per-item maximums, discharge to a permeable surface ≥ 2 m from the foundation, eligible licence types T94 / T92 / T87 / T85, photo requirement, two-year application window.
- Institute for Catastrophic Loss Reduction (ICLR) — Handbook for Reducing Basement Flooding (Dan Sandink). Handbook 2009; ICLR flood page and "Good / Better / Best" retrofit advice April 21, 2026. Used for: the three mechanisms of basement flooding (overland, infiltration, sewer backup); where infiltration enters; what each protective measure does.
- City of Toronto — Foundation Drainage Policy and Guidelines — FAQ. January 4, 2022 (policy effective January 1, 2022). Used for: foundation drain (weeping tile) connections to the sanitary sewer are strongly discouraged by the MECP; on-site management (sump, infiltration) is the expected approach.
- ClaimRebate.ca cost research — Sump Pump Cost in Toronto — Before and After the Subsidy. Price ranges verified August 1, 2026 against two Toronto contractor price guides (February 2026 and 2026 editions). Used for: installed price ranges for a replacement into an existing pit and for a new pit.
- ClaimRebate.ca program registry — Ontario municipal basement flooding programs (11 cities). Each program re-verified against its official page September 4, 2026. Used for: which cities pay toward a sump pump and how much — read from the registry at render time.
ClaimRebate.ca is independent and not affiliated with any municipality or program. Amounts shown are read from our program registry at the time this page is generated; confirm current terms on the official page before relying on them.