Repair vs. replace
A parts repair is usually far less than a full assembly replacement.
Repair & Replacement
Backflow Preventer Repair & Replacement
Failed a test or have a non-compliant device? We repair or replace it, retest, and re-file with the City — restoring compliance without unnecessary delays.
What happens when a backflow preventer fails?
If your annual backflow test results in a failed preventer, corrective action is required before your property can return to compliance. Depending on the device’s condition, this means repairing worn components or replacing the assembly entirely — then retesting and re-filing the results.
- Repair of worn seals, valves, or internal components
- Full replacement when a device no longer meets code
- Retesting after any repair or replacement
- Re-submission of results to restore compliance
Repair & Replacement
From failed test to compliant — handled for you
Whether you have a failing DCVA or RP assembly, our team restores your system efficiently and affordably. We diagnose the issue, complete the repair or replacement, and close the compliance loop.
Accurate diagnosis
We assess the cause of failure before recommending repair or replacement.
Repair or replace
Worn components repaired, or the full assembly replaced when required.
Cost-effective
We restore compliance without unnecessary upsells or delays.
Retest & re-file
The corrected device is retested and results re-submitted to the City.
How It Works
Our process
1
Diagnose
We identify why the device failed and what’s needed to fix it.
2
Repair / Replace
We repair worn components or replace the assembly as required.
3
Retest
The corrected device is tested to confirm it now passes.
4
Re-file
We submit the updated results so your property is compliant again.
On the Job
From flagged to fixed
When a device is flagged, we diagnose whether it needs repair or full replacement, complete the work, and retest — closing out the compliance record for you.
Repair or replace?
Whether a device can be repaired or must be replaced depends on its condition and whether it still meets code.
| Situation | Typical action | Outcome |
|---|---|---|
| Worn seals or valves | Repair internal components | Restored to passing condition |
| Device fails performance or code | Full assembly replacement | Compliant, code-approved device |
| Outdated / damaged assembly | Replace with RPZ or DCVA | Modern, compliant protection |
Repair or replace — which does your device need?
When a backflow preventer fails its annual test, the fix depends on the device’s condition. Minor wear can often be repaired; a device that no longer meets code or is beyond economical repair needs replacement. We diagnose the cause first and recommend the most cost-effective path back to compliance.
- Failed an annual test and needs corrective action
- Worn seals, springs, or check valves causing leaks or failure
- A relief valve that won’t hold on an RP assembly
- Outdated or discontinued assemblies that can’t be serviced
- Visible corrosion, damage, or freeze damage
- Devices flagged during a cross-connection survey
What to expect with a repair or replacement
After a failed test, we diagnose exactly why the device failed — often a worn internal component rather than the whole assembly. If it can be repaired, we replace the affected parts and retest on the spot. If it must be replaced, we install a compliant assembly sized for your property. Either way, the corrected device is retested to confirm it passes, re-tagged, and the updated results are re-filed with the City — closing out your compliance record without a second appointment wherever possible.
What affects repair and replacement cost?
Whether a device is repaired or replaced — and what it costs — depends on its condition and type. We diagnose first and quote the work before proceeding, so you can decide with full information.
Device type & size
Larger RP assemblies cost more to rebuild or replace than a small DCVA.
Parts availability
Older or discontinued devices may need full replacement if parts are unavailable.
Retest & re-filing
The corrected device is retested and re-submitted, included in your quote.
Failed your test? Contact us for a clear diagnosis and a quote before any work begins.
Questions, Answered
Frequently asked questions
Yes. A repaired or newly replaced device must be tested to confirm it functions correctly, and the results must be documented and filed.
We handle the repair or replacement, retest, and re-file as one process to bring your property back into compliance without unnecessary delays.
Yes. We replace failing Double Check Valve and Reduced Pressure Principle assemblies with compliant, code-approved devices.
Cost depends on the device type and size. We provide a clear quote up front and focus on cost-effective, code-compliant solutions.
Not always. Minor wear can usually be repaired, but a device that no longer meets code or whose parts are unavailable must be replaced. We diagnose first and recommend the most cost-effective option.
We aim to diagnose, repair or replace, retest, and re-file as one streamlined process — often without needing a second visit — so your property returns to compliance quickly.
Yes. Once the corrected device passes retesting, we re-tag it and submit the updated results so your compliance record is complete.
More Services
We handle every backflow need
Backflow Testing
Certified testing, digital reporting, and full compliance with Toronto’s Backflow Prevention Program — handled end-to-end for your property.
Backflow TestingInstallation
Compliant installation of RPZ and double check valve assemblies by OWWA-certified plumbers — sized and installed correctly for your property the first time.
InstallationCross-Connection Surveys
A systematic survey of your plumbing system to find and eliminate cross-connections — the points where contaminated water could enter your clean supply.
Cross-Connection SurveysReady to get started?
Book service or request a quote — we serve commercial and industrial properties across the GTA.