Backflow Testing, Installation & Service in Orillia & North Bay — Licensed, Compliant & On Record

Backflow prevention isn’t optional — it’s required by law across Ontario to protect the public water supply from contamination.

Whether you’re a homeowner, business owner, or property manager, Poly-B Plumbing provides licensed backflow device testing, installation, and service to keep you code-compliant, insured, and safe.

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What is Backflow?

Backflow happens when water flows the wrong way — back into the public water supply. This can pull contaminants from:

Visual inspection of all exposed water lines

Test all shutoff valves (main, fixtures, outdoor taps)

Water pressure and flow testing

Toilet tank inspection and leak check

Under-sink and behind-fixture pipe checks

Drain flow assessment

Water heater visual check (corrosion, TPR valve, sediment)

Sump pump function test (if applicable)

Backwater valve check (if installed)

Cottage seasonal recommendations (if needed)

Municipalities across Ontario mandate testing and approved devices to prevent backflow. If you’ve received a notice, this is what it’s about.

Diagram showing how backflow can allow contaminated water to enter a clean water supply line

What We Do

We’re fully licensed to test, install, and file under local and provincial regulations.

Annual backflow device testing and certification

Backflow preventer installations (residential + commercial)

Repair or replacement of existing devices

Submission of test reports to municipalities

Retrofits to meet local bylaws

Cross-connection assessments for new buildings

Pre-purchase inspections for commercial systems

Poly-B Plumbing technician conducting backflow testing on a commercial property in North Bay

Who Needs Backflow Testing?

A commercial building

A multi-unit residential property

A home with irrigation, fire suppression, or a boiler

A medical, food service, or industrial space

A property that’s received a city notice or compliance letter

…you’re likely required to have your backflow preventer tested every year by a licensed tester — and have the results submitted.

Poly-B technician installing a backflow prevention device and performing a compliance test in Orillia

Our Testing & Installation Process

Site Review & Device Check
We confirm your backflow device type, access, and current test history.
Testing (Annual)
We use calibrated testing gauges to check pressure differentials and valve response — as required by OWWA and your local municipality.
Submit Paperwork
We handle all municipal documentation — you get a PDF copy for your records, and we file directly with the city.
Repairs or Replacement (if needed)
If the device fails, we offer immediate repair options or full replacement with a code-approved unit.
Ongoing Compliance
We track your renewal date and offer reminder calls/emails to stay in compliance.

Clean water tap next to a warning sign about potential contamination from backflow incidents

Why This Matters

Required by law in most commercial and high-risk residential properties

Protects drinking water from back-siphonage and contamination

Helps avoid fines, penalties, and insurance issues

Shows due diligence and risk management as a property owner

Required documentation for many real estate sales or lease renewals

Poly-B Plumbing technician completing certified backflow testing paperwork at a client site

Why Choose Poly-B for Backflow Compliance

OWWA-Certified Testers

Licensed, insured, and registered with local municipalities

All paperwork filed for you — zero hassle

Quick, clean installs with premium valves and materials

Scheduled testing reminders and reports

$49/month members receive priority booking + discount on testing and repairs

What Our Customers Say

Real reviews from real homes. Here’s what your neighbours are saying.

Where We Provide Backflow Testing and Installs

We’re approved for testing and installs in:

Orillia, Ontario

North Bay, Ontario

Gravenhust, Ontario

Powassan, Ontario

Muskoka & and surrounding rural areas

Multi-unit buildings, retail spaces, restaurants, industrial facilities

Residential homes with private irrigation or fire suppression systems

Map of Ontario highlighting Poly-B Plumbing’s backflow testing and installation coverage in Orillia, North Bay, and surrounding towns

Frequently Asked Questions

How often do I need to test my backflow preventer?

Once per year is the standard in most municipalities. You may receive a reminder notice.

What happens if I don’t comply?

You may face fines, or the city may send enforcement. You could also risk insurance non-compliance and the city will also shut off your water.

What if my backflow device fails the test?

We’ll provide a same-day quote for repair or full replacement. If a repair kit is available, we’ll fix it right away — otherwise, we’ll order the parts and schedule the work as soon as they arrive.