Commercial · Backflow
Backflow prevention testing and installation in Toronto
Commercial, industrial, institutional and larger residential buildings in Toronto must have backflow prevention on the water supply, tested at least once a year and reported to the City.
Overview
When does a backflow preventer have to be tested?
Under the City of Toronto Water Supply By-law.
At installation
Every new device is tested when it is installed.
After service
Within 72 hours after it is cleaned, repaired, replaced or serviced.
Once a year
At least annually, every year.
By a certified tester
A certified Cross Connection Control Specialist.
Reported online
Results submitted to the City through the online test report.
Tagged
A test tag with the history attached to each device.
How we do it
How does a backflow test work?
Most tests take under an hour per device, with a short water shut-off.
- Schedule at a time that suits the building.
- Test the device to the approved procedure.
- Repair or replace if it fails, then retest.
- Submit the report to the City online and tag the device.
- Reminder next year so you never miss the deadline.
Pricing
What affects the cost of backflow testing?
We quote a fixed price from drawings or a site visit. These are the things that move the number.
Number of devices
Price is per device tested.
Device size
Larger devices take longer.
Repairs
Failed devices need repair kits or replacement.
Access
Devices in tight or high locations.
After-hours
If water cannot be shut off during business hours.
Contracts
Annual contracts include reminders and scheduling.
FAQ
Common questions
Who needs backflow prevention in Toronto?
Owners of industrial, commercial, institutional and Part 3 residential properties, as well as construction sites, must install a backflow prevention device on the water supply under the Water Supply By-law.
How often is testing required?
At installation, within 72 hours after servicing, and at least once a year.
Who can test a backflow device?
A certified Cross Connection Control Specialist, such as a certified plumber.
How long should we keep records?
The City asks that copies of submitted records be kept on site for at least seven years.
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