- On-site plumbing help, fast and hassle-free—within 24 hours.
- 337 Burnhamthorpe Rd, Etobicoke, ON M9B 2A2
Backflow occurs when contaminated water reverses into your clean water lines — posing serious health risks. Whether due to pressure changes or faulty valves, it’s an issue no home or commercial property can afford to ignore.
At Plumbing On Site, we specialize in certified backflow prevention, testing, installation, and repairs. Our technicians are fully trained to bring your property into compliance with all local and provincial regulations — helping you avoid contamination, fines, or costly shutdowns.
Backflow prevention isn’t just a code requirement — it’s a necessity. These are some of the most frequent issues we resolve:
Whether you’re a homeowner, property manager, or business owner in the GTA, Plumbing On Site is here to protect your clean water supply — 24/7. Backflow issues aren’t always obvious, but when left unchecked, they can contaminate your drinking water and create serious health risks. That’s why we’ve outlined the most common situations our team handles — from failed testing to leaking devices and risky cross-connections. Tap through the sections below to understand how we prevent, repair, and maintain backflow systems — quickly, cleanly, and fully certified.
We perform certified yearly backflow device inspections to keep your home or business compliant with local water safety laws.
From single-family homes to large commercial properties, we handle all device types and testing protocols.
We submit detailed test results and paperwork to municipalities on your behalf — hassle-free.
Backflow devices that drip, jam, or fail testing require immediate repair or replacement.
We fix internal seals, springs, and valve components to restore proper function.
Older devices are replaced with CSA-approved, city-compliant units for long-term safety.
We specialize in multi-valve backflow systems common in industrial and multi-tenant buildings.
Quick response for system isolation to prevent contamination during repairs or failures.
Scheduled testing, service, and system tracking tailored to commercial clients.
We inspect irrigation, fire, and boiler systems for unprotected cross-connections.
Installation and testing of preventers to stop contaminated water from flowing backward.
We help you meet or exceed municipal standards with proper device placement and maintenance.
We’re not just plumbers — we’re your neighbours. With deep roots in the community, we deliver dependable service backed by real local experience.
Plumbing problems can’t wait. That’s why we show up when we say we will, fully equipped to handle most jobs on the spot.
No hidden fees. No fine print. We provide transparent quotes before we start, so you know exactly what you’re paying for.
From clean uniforms to shoe covers and spotless clean-up, we treat your space like it’s our own—leaving nothing behind but solid work.
No matter where you are in the GTA, Plumbing On Site is just a call away—delivering fast,
reliable service across Southern Ontario’s busiest communities.
