Commercial Plumbing

Backflow prevention.
Installed, tested and certified.

Ontario requires annual backflow testing for many commercial properties. Mechora installs backflow prevention devices and provides certified testing across the GTA and Ontario.

Get a Free Estimate Call (249) 733-7907

What Is Backflow Prevention?

Protecting the municipal water supply

Backflow prevention protects the municipal water supply from contamination by preventing water from flowing backward from a building's plumbing into the public water main. Backflow can occur due to sudden pressure changes — such as a water main break or high demand event — and can draw contaminants from a building's systems into the public supply.

Ontario municipalities require annual third-party testing and certification for most commercial backflow prevention assemblies. Requirements vary by municipality and device type.

Note: Confirm your municipality's specific requirements — testing frequency and documentation requirements vary by municipality and device type. Mechora provides testing and documentation to support your compliance requirements.

Who We Serve

Commercial backflow testing for every building type

Restaurants
Office Buildings
Condominiums
Industrial
Healthcare
Retail
Hotels
Schools

Services Included

Backflow prevention services

Backflow Testing
Annual certified backflow prevention assembly testing per municipal requirements. We test, document and provide written reports for your records and municipal submission.
Backflow Device Installation
Install backflow preventers appropriate for the hazard level of your building's cross-connections — correctly sized, properly located and compliant with Ontario plumbing code.
Backflow Device Repair
Repair malfunctioning or failed backflow prevention assemblies. We diagnose the failure, replace internal components and arrange re-testing following repairs.
Backflow Device Replacement
Replace aging or failed backflow preventers with new certified assemblies. We remove the old device, install a certified replacement and provide a passing test report.
Cross-Connection Control
Assess and eliminate cross-connections in commercial plumbing systems. Identify hazardous connections between potable and non-potable water systems.

Our Process

How backflow testing works

Schedule Testing
Contact us to schedule your annual backflow test. We confirm the device location, type and any access requirements before the visit.
On-Site Testing
A certified tester visits your property and performs the required tests on each backflow prevention assembly using calibrated test equipment.
Pass or Remediate
If the device passes, a test report is issued. If it fails, we assess whether repair or replacement is needed and proceed with the required work.
Documentation Provided
You receive a written test report for your records and municipal submission. We can also track your annual testing schedule for future notifications.

Why Mechora

Certified testing. Written reports. Full service.

Licensed & Insured
Licensed plumbers and certified backflow testers. Fully insured on every job.
Written Test Reports
Official test reports for every device tested — formatted for municipal submission and your building records.
Full-Service Capability
We test, repair and replace. No need to coordinate multiple contractors when a device fails.
Ontario-Wide Service
Backflow testing and installation across the GTA, York Region, Peel Region and broader Ontario.

FAQ

Backflow prevention — common questions

A backflow preventer is a mechanical device installed on a building's water supply connection that stops water from flowing backward from the building's plumbing into the municipal water main. Backflow can occur due to pressure changes and can contaminate the public water supply with chemicals, bacteria or other hazards present in the building's plumbing.
Most Ontario municipalities require annual third-party testing and certification of backflow prevention assemblies for commercial properties. Requirements vary by municipality and device type — confirm the specific requirements with your local municipality. Mechora provides testing and documentation to support your compliance requirements.
A failed backflow test means the device did not meet the required performance standards. The device will typically need to be repaired or replaced before a passing test can be issued. Mechora can assess whether repair or replacement is more appropriate, perform the required work, and arrange a re-test.
The required device type depends on the hazard level of the cross-connection — the degree to which contamination could affect the public water supply. High-hazard connections (chemicals, sewage) require more robust devices than low-hazard connections. A plumbing assessment will determine the appropriate device type for your building's use and connection point.
Yes. Mechora provides a written test report for each backflow prevention assembly tested. Reports document the device type, location, test results and tester certification. Reports can be submitted to your municipality as required by local bylaws.
Yes. Backflow prevention testing is performed by certified testers with appropriate training and credentials. Mechora Group Inc. is licensed and insured to perform commercial plumbing and backflow prevention work in Ontario.

Service Areas

Backflow testing across Ontario

TorontoMississaugaBramptonVaughanMapleWoodbridgeRichmond HillThornhillMarkhamAuroraNewmarketOakvilleBurlingtonHamiltonAjaxPickeringWhitbyOshawaEtobicokeNorth YorkScarboroughBarrieGuelphKitchenerMiltonGeorgetown

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Schedule your backflow test or installation

Contact Mechora Group to book annual backflow testing or discuss a new installation. We provide written reports and coordinate with your municipality's requirements.

Get a Free Estimate Call (249) 733-7907