Question 1

Why do I need a backflow preventer?

Accepted Answer

Without a backflow preventer, a pressure surge in the sewer system can push wastewater backward — directly into your drinking water pipes or basement. It's illegal under Quebec's Plumbing Code if your property is in a high-risk area.

Question 2

How do I know if my backflow preventer works?

Accepted Answer

Many homeowners don't know — until there's a backup. Signs include sewer odors, abnormal gurgling sounds, or basement flooding after rain.

Question 3

Are all backflow preventers equal?

Accepted Answer

No. Only CSA B64.10 certified and RBQ-approved models are legal in Quebec. We only install double check valve units with automatic relief.

Question 4

Does installation require a permit?

Accepted Answer

Yes. Any modification to the main drain system requires an RBQ permit. We handle all paperwork, municipal inspections, and provide a certificate of compliance.

Question 5

How much does a professional installation cost?

Accepted Answer

$800 to $2,200, depending on complexity. A free quote specifies the exact cost — no hidden fees.

Question 6

Can I install a backflow preventer myself?

Accepted Answer

Technically yes — but illegally. Without an RBQ license, you cannot obtain a permit or pass inspection. Non-compliant installation often voids insurance coverage.

Protect your drinking water — before it's too late.

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