Markham's Private Plumbing Protection Rebate Program pays a maximum rebate for flood-protection work, but only after the City approves the address. The property has to be in a known flood-prone area, or you have to show a flood risk. The building permit deadline is April 30, 2027, and the rebate application deadline is July 31, 2027. Markham publishes maximums, not a percentage of the invoice.
Covers Markham.
Maximum rebate by item
These are separate maximums. A backwater valve on the sanitary line and one on the storm line are different items. The City has to approve the work before it starts.
- Indoor backwater valve, sanitary$1,750
- Indoor backwater valve, storm$1,750
- Outdoor backwater valve, sanitary$2,000
- Outdoor backwater valve, storm$2,000
- Weeping tile to storm, by gravity$3,000
- Weeping tile and sump pump$5,000
- Storm lateral reline or repair$2,500
- Sanitary lateral reline or repair$2,500
| Eligible work | Share | Maximum rebate |
|---|---|---|
| Indoor backwater valve, sanitary | Up to the maximum | $1,750 |
| Indoor backwater valve, storm | Up to the maximum | $1,750 |
| Outdoor backwater valve, sanitary | Up to the maximum | $2,000 |
| Outdoor backwater valve, storm | Up to the maximum | $2,000 |
| Weeping tile to storm, by gravity | Up to the maximum | $3,000 |
| Weeping tile and sump pump | Up to the maximum | $5,000 |
| Storm lateral reline or repair | Up to the maximum | $2,500 |
| Sanitary lateral reline or repair | Up to the maximum | $2,500 |
Who can apply
- The property is in a known flood-prone area, or you can show a flood risk there.
- Downspouts are disconnected from the City sewer.
- There are no outstanding taxes, fines, fees, work orders, or other municipal requirements.
- Environmental Services approves the work before installation. A technical review comes before the building permit.
- A licensed plumber completes the work, the permit is inspected, and you sign the City's release.
- The building permit is obtained by April 30, 2027, and the rebate application is submitted by July 31, 2027.
Markham does not phone homeowners to sell or require this work. If someone calls claiming to be the City, use 905-477-5530.
plumbingrebate@markham.ca or 905-477-5530
How we handle the paperwork
- 1
Technical review first
You and the contractor confirm the work, then the technical review form goes to plumbingrebate@markham.ca before anyone starts.
- 2
Camera inspection, then the permit
After the first approval, a licensed plumber cameras the laterals. The City then says whether to proceed. The building permit uses that approval.
- 3
Install, inspect, then the rebate form
We do the work and the Building Department inspects it. The rebate application, with invoices, goes to Environmental Services. The City issues the cheque.
Questions about this program
No. The City limits the rebate to known flood-prone areas, or to a property that can show a flood risk. It also has to approve the work before installation. We check that before we quote the rebate.
Markham publishes a maximum rebate for each item. It does not publish a percentage. The receipt treats that maximum as the most the City pays. If the invoice is lower, the planning figure uses the invoice.
Not for a new installation. The technical review has to be approved before the permit and the work. Retroactive rebates are only for work done between May 1, 2017 and May 1, 2018.
Amounts were checked against the City of Markham Private Plumbing Protection Rebate Program on October 5, 2026. The rebate table is on that page. By-law 2020-45 has the program rules. By-law 2020-45 (PDF).