# Backflow Prevention Specialists in Hamilton & The Golden Horseshoe > Guard against the risk of water contamination due to backflow from your Hamilton and across the Golden Horseshoe commercial water supply and speak with the friendly team at Birnie & Sons Plumbing abou... Guard against the risk of water contamination due to backflow from your Hamilton and across the Golden Horseshoe commercial water supply and speak with the friendly team at Birnie & Sons Plumbing about how they can assist you with your blackflow prevention testing and solutions. With over 100 years experience, read what customers have to say about us [here](https://birnieplumbing.ca/plumbers-in-hamilton-ontario/birnie-plumbing-reviews.html). ![Experts](https://birnieplumbing.ca/images/s/backf1.png) Birnie & Sons Plumbing can assist with all your backflow prevention needs, including: ### 1. Annual Backflow Testing ![Plumbers](https://birnieplumbing.ca/images/s/bir_time.png) We can perform backflow prevention testing on all backflow prevention systems to ensure your current system is working. We have annual agreements and testing equipment calibration certification. ### 2. Expert Backflow Advice With over 100 years in plumbing, we have the experience to offer you sound, expert advice on the right backflow prevention solutions to suit you. ### 3. Professional Backflow Prevention Installations We have the experience and know-how to perform expert installations of all backflow preventer systems available up to the size of 3" and can perform surveys for most applications ### 4. Regular Backflow Prevention Maintenance To ensure your backflow preventer continues to work as it should, we can assist with regular maintenance for your continued supply of uncontaminated water. ### 5. Fast & Convenient Service Your plumber will be with you quickly and at a time convenient to you for your plumbing needs. At Birnie & Sons Plumbing, you'll always know when your plumber is on their way. For all your backflow prevention testing, advice and installations in Hamilton and across the Golden Horseshoe region, call and speak with the backflow prevention specialists at Birnie & Sons Plumbing today. ## Navigation - [Home](https://birnieplumbing.ca/) - [About Us](https://birnieplumbing.ca/ontario-plumbing/about-us.html) - [Employment](https://birnieplumbing.ca/ontario-plumbing/plumbing-jobs-hamilton.html) - [Charity Work](https://birnieplumbing.ca/ontario-plumbing/community.html) - [Copps Ads](https://birnieplumbing.ca/ontario-plumbing/copps-ads.html) - [Hamilton](https://birnieplumbing.ca/ontario-plumbing/plumber-hamilton.html) - [Burlington](https://birnieplumbing.ca/ontario-plumbing/plumber-burlington.html) - [St Catharines](https://birnieplumbing.ca/ontario-plumbing/plumber-st-catharines.html) - [Niagara Falls](https://birnieplumbing.ca/ontario-plumbing/plumber-niagara-falls.html) - [Brantford](https://birnieplumbing.ca/ontario-plumbing/plumber-brantford.html) - [Welland](https://birnieplumbing.ca/ontario-plumbing/plumber-welland.html) - [Accessibility Notice](https://birnieplumbing.ca/ontario-plumbing/accessibility-notice.html) - [CHCH Morning Live](https://birnieplumbing.ca/ontario-plumbing/chch-morning-live-2026.html) - [Plumbing](https://birnieplumbing.ca/hamilton-plumbers.html) - [Plumbing Services](https://birnieplumbing.ca/hamilton-plumbers/hamilton-plumbers.html) - [Pipes and Leaks](https://birnieplumbing.ca/hamilton-plumbers/copper-repipe-hamilton.html) - [Toilet Plumbing](https://birnieplumbing.ca/hamilton-plumbers/toilet-repair-hamilton.html) - [Showers and Baths](https://birnieplumbing.ca/hamilton-plumbers/shower-plumbing-hamilton.html) - [Taps and Sinks](https://birnieplumbing.ca/hamilton-plumbers/hamilton-taps-sinks.html) - [Wells and Pumps](https://birnieplumbing.ca/hamilton-plumbers/well-pump-hamilton.html) - [Water Quality Kinetico](https://birnieplumbing.ca/hamilton-plumbers/hamilton-water-quality.html) - [Drains](https://birnieplumbing.ca/hamilton-drain-cleaning.html) - [Drains and Sewers](https://birnieplumbing.ca/hamilton-drain-cleaning/hamilton-sewer-repair.html) - [Trenchless Sewer Repair](https://birnieplumbing.ca/hamilton-drain-cleaning/hamilton-trenchless-sewer-repair.html) - [Hot Water](https://birnieplumbing.ca/water-heater-hamilton.html) - [Water Heaters](https://birnieplumbing.ca/water-heater-hamilton/water-heater-hamilton.html) - [Tankless Water Heaters](https://birnieplumbing.ca/water-heater-hamilton/tankless-water-heater-hamilton.html) - [Wet Basements](https://birnieplumbing.ca/wet-basement-hamilton.html) - [Commercial](https://birnieplumbing.ca/commercial-plumbing-hamilton.html) - [Commercial Plumbing](https://birnieplumbing.ca/commercial-plumbing-hamilton/commercial-plumbing-hamilton.html) - [Backflow Prevention](https://birnieplumbing.ca/commercial-plumbing-hamilton/backflow-prevention-hamilton.html) - [Areas](https://birnieplumbing.ca/plumbing-services-hamilton-ontario.html) - [Guarantee](https://birnieplumbing.ca/plumbers-in-hamilton-ontario.html) - [Guarantee](https://birnieplumbing.ca/plumbers-in-hamilton-ontario/plumbers-in-hamilton.html) - [Testimonials](https://birnieplumbing.ca/plumbers-in-hamilton-ontario/birnie-plumbing-reviews.html) - [Call Us](https://birnieplumbing.ca/thos-r-birnie-and-sons.html) - [Search](https://birnieplumbing.ca/thos-r-birnie-and-sons/search.html?searchword=) - [Book Online](https://birnieplumbing.ca/thos-r-birnie-and-sons/book-online.html) - [Terms and Privacy](https://birnieplumbing.ca/thos-r-birnie-and-sons/privacy-policy.html) ## Company information - Birnie Plumbing & Drains (Thos. R. Birnie & Sons Ltd.) - 390 Lake Ave N Unit1, Hamilton, ON L8E 3A2 - Phone: (289) 588-1646 \| (289) 438-1322 - [https://birnieplumbing.ca](https://birnieplumbing.ca) ## About Birnie & Sons Plumbing **Birnie & Sons Plumbing (Thos. R. Birnie & Sons Ltd.)** is a family-owned and operated plumbing and sewer services company based in **Hamilton, Ontario, Canada**, with a history dating back to the 1920s. Founded by John Birnie and continued through multiple generations of the Birnie family, the company has provided professional residential and commercial plumbing services for over 100 years. Its comprehensive services include plumbing repairs, maintenance and installations, pipe and leak repairs, toilet repairs and installations, sinks, faucets, showers, bathtubs, drain cleaning, sewer line inspections and repairs, trenchless sewer repair, hydro-jetting, tree root removal, water heater repair and replacement, tankless water heaters, sump pumps, wet basement solutions, wells and pumps, water softeners, water filtration and purification systems, reverse osmosis systems, backflow prevention, and commercial plumbing. As an authorized Kinetico dealer and installer, the company also provides specialized water treatment solutions to improve household water quality. **Birnie & Sons Plumbing is known for its experienced technicians, dependable emergency response, transparent pricing, and commitment to professional workmanship.** The company is fully licensed and insured, with skilled plumbers who receive ongoing training to work with both traditional plumbing systems and modern equipment. Its 24/7 emergency plumbing service uses GPS-assisted dispatching to send the nearest available technician to urgent plumbing and sewer problems. Customers receive clear, upfront pricing quoted by the job rather than by the hour, allowing them to understand costs before work begins. The company backs its workmanship with written warranties and emphasizes punctual appointments, advance arrival notifications, respectful customer service, and clean working practices. Technicians use protective shoe covers and work mats, maintain tidy work areas, and clean up after completing repairs or installations. Its commercial services also support businesses and facilities with priority emergency response, preventive maintenance, plumbing upgrades, renovations, and new installations. **With more than a century of continuous family business history, Birnie & Sons Plumbing has built an established reputation for reliability, technical expertise, and customer satisfaction.** The company highlights its long-standing Hamilton plumbing licence number 002 as evidence of its historical presence in the local plumbing industry and reports serving tens of thousands of customers over multiple generations. Customer testimonials published on its website frequently recognize the company's prompt response, courteous and knowledgeable technicians, efficient problem-solving, fair pricing, and attention to cleanliness. Reviews describe successful solutions to blocked drains, sewer backups, tree root intrusions, toilet installations, and other plumbing emergencies, often emphasizing professionalism and convenient service. The company's combination of extensive industry experience, comprehensive plumbing capabilities, emergency availability, and customer service guarantees makes **Birnie & Sons Plumbing a well-established provider of residential plumbing, commercial plumbing, drain cleaning, sewer repairs, and water treatment services**. Additional company information and service details are available at **https://birnie-plumbing.com/**. ## Page information - [Canonical URL: https://birnieplumbing.ca/commercial-plumbing-hamilton/backflow-prevention-hamilton.html](https://birnieplumbing.ca/commercial-plumbing-hamilton/backflow-prevention-hamilton.html) ## Birnie Plumbing & Drains (Thos. R. Birnie & Sons Ltd.) Service Area Includes - Ainslie Woods - Alberton - Aldershot - Allanburg - Ancaster - Appleby - Barrie - Bayview - Beamsville - Binbrook - Brant Hills - Brantford - Bronte - Broughton - Burlington - Caledonia - Cambridge - Clarksdale - Cootes Paradise - Doon South - Dundas - Dunnville - Dynes - Elizabeth Gardens - Facer - Fonthill - Fort Erie - Freeman - Glen Abbey - Glenrigde - Glenwood Park - Grantham - Grayside - Grimsby - Hagersville - Haldimand County - Hamilton - Hespeler - Huron Park - Jerseyville - Jordan Station - Kings Forest - Kirkendall North - Kitchener - Lakeport - Lakeshore - Lincoln - Longmoor - Louth - Meadowlands - Merritton - Milton - Mississauga - Mount Hope - Mountview - Nelson - Niagara - Niagara Falls - Niagara-On-The-Lake - Norfolk County - Oakville - Orchard - Paris - Pelham - Port Colborne - Port Dalhousie - Port Nelson - Preston Centre - Queenston - Riverdale East - Roseland - Saint Anns - Saint Davids - Saint George - Simcoe - Smithville - St Catharines - Stevensville - Stoney Creek - Strathcona - Sunninghill - Thorold - Tyandaga - Vineland - Waterdown - Waterford - Welland - West Lincoln - Western Hill - Woodburn