PLUMBING · BACKFLOW PREVENTION
Backflow is what happens when contaminated water reverses direction and flows back into the municipal supply — pulling chemicals, irrigation runoff, or process water into the drinking system. City of Toronto Bylaw 891-2007 requires most commercial properties and any property with an irrigation system to install a backflow preventer and test it annually. Our certified testers install, test, and file the reports with the City for you.
From small atmospheric vacuum breakers on hose bibs up to large reduced-pressure assemblies on industrial mains, we install, test, repair, and recertify every backflow device class recognized under CSA B64.10 and the City of Toronto's cross-connection control program.
The highest level of protection — required for high-hazard applications like boilers with chemical treatment, lab supply, and process water. Two independently-acting check valves with a relief valve between them.
Medium-hazard protection for fire lines, food-service prep sinks, and most commercial domestic water services. Two spring-loaded check valves in series with test cocks for annual verification.
The standard device for irrigation systems — installed above grade, protects against back-siphonage of fertilizer and lawn chemicals into the potable supply. Tested annually with the rest of the program.
Fixture-level protection on hose bibs, janitor sinks, and lab faucets. Non-testable but inspected as part of a full cross-connection survey to ensure correct application and orientation.
On-site field testing by a City-registered tester using calibrated gauges. Results filed directly with the City of Toronto's cross-connection control program within five business days — no paperwork on your end.
When a device fails its annual test, we rebuild or replace internal components on-site, retest, and re-file with the City. Full assembly replacements stocked for Watts, Febco, Wilkins, and Apollo.
Under City of Toronto Bylaw 891-2007 (the Cross-Connection Control Bylaw), most non-residential properties — and any property with an irrigation system — must install premise-isolation backflow preventers and test them every twelve months. If you fall in any of the categories below, you need a device on record.
Four steps from booking to filed report. Most single-device tests are done inside an hour — and you don't lift a finger on the paperwork.
Annually, on the device's anniversary date. We track all our clients' test cycles and send reminders 30 days out so nothing lapses with the City.
15–30 minutes per device using a calibrated differential pressure gauge. We isolate, test the check valves and relief valve, and return the device to service.
Results submitted to the City of Toronto Cross-Connection Control program within five business days. You get a copy for your records and we hold one too.
If the device fails, we rebuild or replace internal components on-site, retest, and re-file. Recertification is included in the original test fee.
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Whether you're catching up on a missed test, installing a device for a new occupancy, or starting fresh on an irrigation system, we'll handle the full cycle — install, test, file, and remind you next year.