Commercial plumbing · Oakville
Backflow preventer testing for Oakville properties
Backflow preventers keep water from a building’s plumbing, irrigation, boiler or fire line from flowing back into the public supply.
- Each testable device run through its pressure-differential test
- Leaking check seats rebuilt, or the whole device swapped
- Results written up for the owner and the water authority
- Testing booked to fit around building water use
- Licensed plumbers · ask for details on the call
- Cause found and explained before work starts
- Oakville & Halton coverage
Overview
Backflow preventers keep water from a building’s plumbing, irrigation, boiler or fire line from flowing back into the public supply. Many commercial, institutional and multi-unit properties have testable assemblies that need regular checks. When a test fails, a check valve or relief valve inside the assembly usually needs cleaning, new rubber or replacement.
What is included
- Testing double-check and reduced-pressure assemblies on the domestic line
- Testing assemblies on irrigation and boiler make-up water connections
- Rebuilding check valves and relief valves that fail the test
- Replacing assemblies that are damaged, obsolete or sized wrong
- Writing up results in the format the owner needs to submit
Signs you need this
- A reminder from the property file that annual testing is due
- Spitting or steady dribbling out of the RP relief opening
- Low pressure downstream of the assembly since a recent repair
- A new tenant or equipment that changes the hazard on the line
- A device nobody can find a test record for
How the visit runs
- Confirm the assembly type, size and location when you call.
- Agree on a short water shutdown time with the building.
- Run the test procedure for that assembly type and record readings.
- Repair or replace failed parts and retest until it passes.
- Hand over the results for submission and your records.
Notes from commercial jobs
Halton Region has run a cross-connection control program that applies to many non-residential properties, with rules on which premises need backflow prevention and how often assemblies are tested.
Halton Region has run a cross-connection control program that applies to many non-residential properties, with rules on which premises need backflow prevention and how often assemblies are tested. Programs and reporting steps change, so confirm this year’s rules with Halton staff, while our test sheet records the device fitted and its readings.
Most failures we see are simple: debris on a check seat after main work in the street, hardened rubber, or a relief valve that weeps from a sticking diaphragm. Rebuild kits fix many of these. An assembly that is buried, flooded, or the wrong type for the hazard is a replacement conversation.
Questions from site managers
How much time should we set aside?
One device is usually a short visit, plus any repair time if it fails. Larger buildings with several assemblies take longer.
Will the water be off?
Briefly, while the test runs. We agree on the timing with you before we start.
Do homes need backflow testing?
Most houses do not have testable assemblies, but some do, for example with irrigation systems. Ask on the call.
Related work
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- Offices, plazas and storefrontsCommercial
- Condo stacks and rental buildingsCommercial
- Backflow prevention devicesprotecting drinking water
- Pressure reducing valve servicebanging pipes, high pressure
- Main shut-off valve replacementseized or leaking main valves
Managing a building or running a kitchen? Call (365) 517-8536.