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20+ years experience

Flat-rate pricing

25-year warranty

Backflow Prevention Device Testing & Installation Toronto – Certified Protection for Your Water Supply

Professional backflow preventer testing, installation, repairs, and annual inspections across Toronto, Mississauga, Etobicoke, Halton, Peel, Markham, and the GTA. Ensure compliance with Ontario regulations and keep your drinking water safe with fully licensed and certified specialists.

Why Backflow Prevention Devices Are Essential

Backflow prevention devices protect your potable water from contamination by stopping the reverse flow of polluted or hazardous water into the clean water supply. Commercial, industrial, institutional, and certain residential buildings are legally required to install and maintain these devices under Ontario regulations. Because backflow can occur suddenly and without warning, having a properly functioning device in place is critical for keeping your building’s water safe, maintaining compliance, and avoiding costly fines.

Certified Backflow Testing Services

Annual testing of your backflow prevention device is mandatory in many Ontario municipalities, including Toronto, Mississauga, Richmond Hill, Oakville, Halton Region, Peel Region, and Markham. Our certified plumbers perform full system testing to verify that your device continues to operate correctly and meets all by-law requirements. We provide detailed reporting, submit all required documentation to the appropriate municipality, and ensure compliance so your business continues to operate without interruption.

Professional Installation of Backflow Prevention Devices

Choosing the correct backflow preventer depends on your building type, water usage, and hazard classification. In Toronto, moderate-hazard facilities typically require a Double Check Valve Assembly (DCVA), while severe-hazard facilities require a Reduced Pressure Principle (RP) backflow preventer. Our experienced team evaluates your plumbing system, determines the correct device required by law, obtains any necessary building permits, and installs your backflow preventer in full compliance with municipal codes and industry standards.

Backflow Repairs, Replacements & Emergency Service

If your backflow device is leaking, failing inspections, or showing signs of wear, timely repairs or replacement are essential to avoid contamination and meet regulatory requirements. We diagnose issues with all device types — including DCVA, RP, PVB, and SVB units — and perform repairs using approved parts and procedures. When replacement is necessary, we provide fast, safe installation with minimal disruption to your building’s operations. We also assist with backwater valve services if sewer backup protection is needed.

Building Permits, Documentation & Compliance Support

Installing a backflow prevention device almost always requires a building permit. Absolute Draining & Plumbing manages the entire permitting process for you — from paperwork and municipal submissions to arranging inspections. We have extensive experience working with Toronto, Mississauga, Etobicoke, Oakville, Markham, Scarborough, North York, and surrounding municipalities. Our team ensures every installation meets local by-laws, preventing delays, fines, or failed inspections.

Trusted Backflow Specialists With 20+ Years of Experience

With decades of plumbing expertise and thousands of completed backflow projects, Absolute Draining & Plumbing is one of Toronto’s most trusted service providers for backflow testing and installation. Our team delivers reliable, compliant, and efficient solutions designed to safeguard your water supply and protect your property. Whether you need annual testing, emergency repairs, or a brand-new installation, we are here to help. Contact us today to schedule a certified inspection or consultation.

A Simple & Transparent Process

We’re proud to offer the GTA plumbing service that values transparency and puts customers first. Here’s how we do it.

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1️⃣ Contact us

Whether you’re dealing with a plumbing emergency or need help with a leaky faucet, call us or use our online form. We respond promptly, 24/7.

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2️⃣ Agree on time

We’ll schedule a convenient time that works for you. Our plumbers arrive on time and fully equipped to get the job done. From small fixes to complex plumbing jobs.

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3️⃣ Enjoy the result

We complete the repair, replacement, or installation professionally. With flat-rate pricing and a 25-year warranty on many services, you get peace of mind and plumbing that works.

Contact Us for Plumbing Services in the GTA

No matter the plumbing issue, our team is ready to help. Absolute Draining & Plumbing is committed to resolving your plumbing problems fast, efficiently, and affordably. Get in touch today for a free estimate or immediate support.


    Featured Plumbing Services in the GTA

    We at Absolute Draining & Plumbing provide a wide range of quality plumbing services to satisfy the various demands of Greater Toronto Area companies and homeowners.

    A person performs drain repair and plumbing in Toronto under a sink, tightening a white plastic pipe by hand. Various pipes and fittings are visible, while blue light illuminates the scene.

    Our 24-hour emergency plumbing staff is available to help when you need it most. Our emergency plumbers arrive quickly to handle major leaks, burst pipes, and other urgent issues—trust our emergency team to prevent costly water damage to your home. 

    A plumber wearing red gloves and a cap is working on copper pipes and connections under a boiler in a utility room, showcasing expert drain repair and plumbing in Toronto. Various pipes, valves, and tools are visible on the tiled floor.

    Our skilled plumbers serve commercial properties, including offices, restaurants, and retail spaces. Business owners trust us for everything from plumbing installation to emergency repairs, with dependable service that keeps their operations running smoothly.

    A large turquoise pipe lies on the ground at a Drain repair and Plumbing in Toronto site, with a small device emitting a red light inside. A person with a shovel stands nearby, and a ladder leans against the dirt wall.

    Say goodbye to clogged drains and recurring blockages. Our qualified plumbers use high-pressure hydro-jetting and advanced camera inspections for effective drain cleaning—perfect for any type of plumbing system in both residential and commercial properties.

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    Our specialty is time-saving, mess-free, no-dig drain repair technology. Our professional plumbers provide long-lasting results whether you’re dealing with a collapsed drain or a fractured pipe. For your peace of mind, repairs are covered by a 25-year warranty.

    A person in a beige and brown uniform uses a wrench to adjust pipes connected to a gas or water meter on a white wall, showcasing expert plumbing in Toronto.

    Protect your basement from sewage backups with a professionally installed backwater valve. Our plumber team handles everything, including obtaining necessary permits and rebate support. It’s one of the smartest upgrades for your home’s plumbing system.

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    If your home or business suffered from a plumbing leak or flood, we can help. Our plumbing team provides complete water damage restoration, from cleanup to repairs. We act fast to prevent further damage and mould growth.

    Need a Plumber in the GTA? Contact Us Today

    Absolute Draining & Plumbing is your reliable local partner whether you're planning plumbing upgrades or dealing with plumbing issues. Providing trustworthy, insured, and licensed plumbing services to the Greater Toronto Area.

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