Backwater valves · Toronto
Backwater valve installation — permit, install and subsidy paperwork
Stop sewage coming up through your floor drain in a storm. We pull the permit, install, book the inspection and prepare the subsidy package.
Overview
Who needs a backwater valve?
Flooded before
It will happen again in the next big storm.
Finished basement
A backup becomes a five-figure claim.
Older street
Combined sewers overload first.
Insurer asked
Many insurers want one for sewer-backup coverage.
Gurgling in storms
The sewer is pushing back.
Renovating
Cheaper to add before finishing the basement.
How we do it
How is a backwater valve installed?
One day, done to code and inspected.
- Camera the main line first.
- Permit before work.
- Normally-open valve with access cover.
- Inspection booked and attended.
- Subsidy package ready for your application.
Pair it with a sump pump
If weeping tile drains to the sewer, add a sump pump. Both are subsidy-eligible.
See sump pumpsPricing
How much does a backwater valve cost in Toronto?
Installed price including permit and patch.
| Job | Typical range |
|---|---|
| Mainline backwater valve | $2,500 – $4,500 |
| Camera inspection before install | $280 – $450 |
| Valve check and cleaning | $150 – $250 |
The City of Toronto subsidy can cover part of this cost.
FAQ
Common questions
What is a backwater valve?
A one-way valve on the main sewer line that closes when the city sewer backs up.
Do I need a permit?
Yes, a plumbing permit and inspection. We handle both.
How long does it take?
Usually one day.
Does it need maintenance?
A quick check once or twice a year.
Related
Related services
Emergency plumbing
Burst pipes, floods and no-water calls, dispatched 24/7 across the GTA.
Learn more →Drain cleaning & sewer
Snaking, hydro-jetting and camera inspection for slow and blocked drains.
Learn more →Water heaters
Repair, replacement and tankless conversions, gas and electric.
Learn more →Sump pumps
New pits, replacements, battery backups and alarms.
Learn more →Leak detection & repiping
Non-invasive leak location, pinhole repair and PEX repiping.
Learn more →We work across Etobicoke · North York · Toronto · Scarborough · Mississauga · Vaughan · Brampton · Richmond Hill