514 754-6143 FR

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

A missing or faulty backflow preventer exposes your home to a serious health hazard: raw sewage flowing backward into your clean water lines or basement. We install certified, tested devices that meet Quebec’s strictest plumbing codes.

Call Now — 514 754-6143 Get a Free Risk Assessment
CCQ
CMMTQ
CNESST
RBQ

The silent threat of sewer backup

In Quebec, over 40% of basement water damage claims stem from sewer backup—not leaks. Yet fewer than 30% of homes in at-risk zones have a functioning backflow preventer. This is a ticking time bomb: regulatory, financial, and biological.

The true cost of “I’ll do it later”

An average sewage backup costs $15,000–$50,000 in cleanup, decontamination, flooring replacement, and ruined belongings. Worse: exposure to fecal pathogens (E. coli, salmonella) can lead to hospitalization. And remember—if you lack a certified preventer, your insurer can legally deny your claim.

Insurance, resale, and compliance: three legal reasons to act

Since 2023, many insurers require proof of a certified backflow preventer to cover basement water damage. At resale, an RBQ compliance certificate boosts perceived value and speeds up closing. Conversely, non-compliance can kill a sale or trigger a municipal violation. We turn a liability into a documented asset.

Client Story: The Valve That Saved Their Basement—and Their Health

“After a major storm, our neighbors had three feet of black water in their basement. We had none. Why? Because Gobeil had installed a certified backflow preventer six months earlier. The technician even tested it in front of us. That day, we understood the value of real expertise.”

— Jean-Marc T., Sainte-Dorothée

Our installation process — Compliance, safety, reliability

We don’t just drop in a valve. We ensure your system withstands the next storm.

Risk Assessment

Review of property elevation, flood history, and existing drain condition to select the right device type and placement.

Permit & Documentation

RBQ permit submission, municipal coordination, and delivery of a complete compliance file upon completion.

Certified Installation

Installed by RBQ-licensed technicians with pressure testing, precise alignment, and leak-proof connections.

Operational Verification

Real-world simulation of backflow conditions to confirm the valve activates and seals correctly.

What’s included in every job

CSA-Certified Device: Double-check valve with automatic purge, fully compliant with Quebec Plumbing Code.

RBQ Permit Included: We manage all permits, inspections, and municipal approvals.

Performance Testing: Hydraulic pressure test and live demonstration of valve operation.

Compliance Certificate: Official documentation for your insurer and future home buyers.

Site Restoration: We repair any flooring or access points opened during installation.

Maintenance Guide: Clear instructions for seasonal checks and early warning signs.

12-Month Technical Support: Direct access to our team for questions about your system.

Why Gobeil Plumbing is the trusted choice in your area

We are not a franchise. We are not a call-centre. We are a local, CMMTQ-certified company that has served families in the Laurentians, Laval, and Montréal.

Specialized Expertise

Few plumbers specialize in backflow systems. We handle these critical installations daily.

Total Transparency

No extra charges for permits, inspections, or certified parts. The quote you get is the price you pay.

RBQ #5863-0880-01

Active license, full liability insurance, and strict adherence to provincial standards.

Backup Emergency Priority

If you’ve already experienced a sewage backup, we fast-track your job—even on weekends.

Local Knowledge

We know high-risk zones in Laval (e.g., Pont-Viau, Fabreville) and each municipality’s specific requirements.

No Compromise on Safety

We refuse to install cheap or uncertified valves—even if requested.

Service Areas by Region

We serve major cities and municipalities across Laval, Montreal, the Laurentides, Outaouais, and Vaudreuil-Soulanges.

Laurentides

Laval

Vaudreuil-Soulanges

Montréal

Frequently asked questions

Clear, honest answers from a licensed expert — no sales pitch.

Without one, pressure surges in the municipal sewer system—caused by snowmelt, heavy rain, or blockages—can force wastewater backward into your home’s plumbing or basement. It’s illegal under Quebec’s Plumbing Code if your property is in a designated flood or backflow risk zone.
Most homeowners don’t—until sewage backs up. Warning signs include sewer odors, gurgling drains, or basement flooding after rainfall. We perform pressure and integrity tests to verify full functionality.
No. Only devices certified to CSA B64.10 and approved by the RBQ are legal in Quebec. We install only double-check valves with automatic purge mechanisms—essential for high-risk areas like Laval.
Yes. Any modification to your main drainage line requires an RBQ permit. We handle all paperwork, coordinate with municipal inspectors, and provide a compliance certificate upon completion.
Between $800 and $2,200, depending on access, pipe material, and whether it’s a new install or replacement. We provide a free, detailed quote with no hidden fees.
Technically yes—but legally, no. Without an RBQ license, you cannot obtain a permit or pass inspection. Most insurance policies void coverage for backflow damage if the device wasn’t installed by a certified professional.
Absolutely. Valves should be inspected twice yearly (spring and fall) and cleaned annually. Debris, sediment, or mineral buildup can jam the mechanism—rendering it useless.
Rarely. Most policies explicitly exclude backflow damage if no certified preventer is installed. Even with one, insurers often demand proof of professional installation and certification.
10 to 15 years—if properly maintained. Worn seals, corrosion, or calcification can cause premature failure. A “set-and-forget” approach is a gamble with your health.
Yes. We provide full plumbing compliance audits—including backflow valve testing, drain slope verification, and flood risk assessment—especially recommended before selling your home.

A poorly installed backflow preventer is worse than none at all

A defective device creates false confidence. Meanwhile, your family may be drinking or bathing in contaminated water. Certified installation isn’t an expense—it’s a public health safeguard.

Call Now — 514 754-6143 Get a Free Risk Assessment

RBQ #5863-0880-01 | Serving Laval, Laurentides, Outaouais, Vaudreuil, Rigaud, Saint-Lazare, Hudson, North Shore, Montreal