Commercial · Yearly tests and repairs
Backflow Device Testing and Rebuilds
A backflow assembly stops used or treated water on your side of the meter from being siphoned into the Town's mains. It needs to be tested on schedule and repaired when a check fails.
- Reduced pressure and double check assemblies tested
- Failed checks and relief valves rebuilt
- Test results recorded for the municipality
- New devices installed where premises need one
Phone only · a plumber answers, not a form

- Licensed plumbers (ask us for details)
- Quote settled before tools come out
- We tidy up after every job
- Aurora & York Region
Jump to a section
- Where backflow preventers are needed
- How our Aurora backflow check runs
- If the assembly does not pass
Where backflow preventers are needed
- Restaurants with carbonators, dish machines and chemical dispensers.
- Buildings with fire sprinkler or boiler connections.
- Irrigation systems on commercial lawns.
- Medical, dental and industrial premises with process water.
How our Aurora backflow check runs
- Note the assembly style, its size and the serial plate.
- Hook our gauge kit onto the test ports and close the downstream shut-off.
- Read the pressure drop across each check and the relief valve opening point.
- Record the results and restore service.
If the assembly does not pass
- Check valves fouled with debris or a torn rubber.
- Relief valve dumping water constantly.
- Shut-off valves that no longer close fully, so the test cannot be run.
Only a certified tester may sign off these results, and the Town of Aurora and York Region set the reporting rules. Check the current requirements for your premises, and confirm the tester's certification before the work starts.
Aurora customers often ask
How often is testing required?
Typically each year, plus after any repair, but your municipality sets the schedule. Check the notice you received or ask the Town.
Why is water pouring from the device?
A reduced pressure assembly dumps water when a check is fouled or pressure fluctuates. It needs to be looked at, not plugged.