Backflow Prevention & Testing in Nepean – Certified Compliance Solutions
Protect your property with our licensed specialists who handle residential and commercial backflow preventer installation, backwater valves, and mandatory annual testing to ensure city compliance and clean water safety.
Certified Backflow Prevention Plumbers
Same-Day Testing & Repair
Transparent Upfront Pricing
Backwater Valve Installation
Potable Water Protection
Warranty-Backed Service
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Protect Your Water Supply with Certified Backflow Prevention
Clean water is the foundation of a healthy home and business. At GreenLine Plumbing & Drain Nepean, we specialize in advanced backflow prevention services designed to eliminate contamination risks.
A sudden drop in water pressure can cause dangerous non-potable water to siphon back into your clean supply. Our fully licensed team ensures your property remains compliant with Nepean safety regulations and your water remains pure.
Comprehensive Backflow Testing & Installation Services
We provide end-to-end solutions for cross-connection control. Whether you manage a commercial facility requiring mandatory annual reporting or a residential property needing updated protection, our specialists handle it all. From the initial installation of a backflow preventer to routine testing and emergency repairs, GreenLine Plumbing & Drain Nepean is your partner in water safety.
Backflow Preventer Installation: Mandatory Protection
Installing a backflow prevention device is not just a safety measure; it is often a legal requirement under the Ontario Building Code. We install high-performance devices that stop contaminated water from reversing flow. Our installation process covers:
- Commercial & Residential Solutions: Tailored systems for homes, restaurants, and industrial sites.
- Full Code Compliance: We ensure every installation meets the City of Nepean strict bylaws.
- High-Durability Components: We use top-rated valves designed for longevity and reliability.
If you are looking for professional installation, contact us (613) 800-6843
Annual Backflow Testing in Nepean
To guarantee your device works when it matters most, regular inspections are critical. In many cases, annual testing by a certified professional is required by law. Our backflow testing services provide accurate assessments and detailed reporting.

- Certified Testers: Our technicians hold the necessary OWWA certifications.
- Automated Reporting: We handle the paperwork and submit compliance reports to the city for you.
- Precision Diagnostics: utilizing calibrated gauges to detect even minor pressure irregularities.
Do not wait for a violation notice. Schedule your testing with us today.
Backwater Valve Installation: Defense Against Basement Flooding
While backflow preventers protect your drinking water, a backwater valve protects your home from municipal sewer backups during heavy storms. This device is your first line of defense against sewage flooding your basement.
- Prevents Sewage Backup: Automatically closes the line when city sewers are overloaded.
- Protects Property Value: Reduces the risk of catastrophic water damage and insurance claims.
- Expert Placement: We identify the optimal location for installation to ensure maximum effectiveness.
Consider pairing this with our Sump Pump Services for a complete flood-protection system.
Device Repair and System Maintenance
Mechanical devices wear down over time due to water pressure and mineral buildup. If your unit fails a test or starts leaking, our team provides rapid backflow preventer replacement and repair services.
- Rapid Response: We carry common parts to fix issues in a single visit.
- Cost-Effective Repairs: We rebuild valves whenever possible to save you the cost of full replacement.
- Holistic Plumbing Care: From Leak Detection & Repair to system audits, we keep your plumbing healthy.
For certified backflow prevention, testing, and expert advice, trust the local plumber in Nepean.
Secure your water system today by scheduling an inspection. Protect your health and ensure your plumbing meets all safety standards with our professional services. Call us (613) 800-6843
Why Choose Our Company
Licensed, Knowledgeable Team
- Our plumbers are fully certified, insured, and undergo regular training to stay updated with the latest industry standards. You can trust our expertise for any plumbing issue—big or small.
Eco-Friendly Plumbing Solutions
- We specialize in sustainable plumbing, offering water-efficient fixtures, energy-saving systems, and environmentally responsible repairs to help you reduce waste and lower utility bills.
High-Quality Materials Used
- We never cut corners. Only premium, durable materials are used in every project to ensure long-term reliability and performance, so you won’t face repeated issues.
Thousands of Satisfied Customers
- Our reputation is built on trust. With a long list of happy clients in Nepean, we take pride in delivering consistent, high-quality service that exceeds expectations.

Reviews
I had no idea what to do because pur main line was totally frozen, so I called GreenLine Plumbing. They arrived in like 30 minutes, checked everything and explained why exactly that happened (actually the pipe had frozen and cracked in a small section)...so the plumber replaced the damaged section and insulated the pipes and even and tested the system before leaving. The price was more than OK, even lower than I expected..! Thnks
2025-01-15
When our irrigation system lost pressure, I needed well pump service near me urgently. The team was prompt, fixed the pump efficiently, and even gave tips to keep it running smoothly. Saved our crops—thank you!
2025-10-17
Our kitchen sink drain was clogged with grease and food debris for some time, and chemical methods did not work at all. The plumber cleared the drain and flushed the pipes. The price was really reasonable.
2025-03-09
water softener stopped regenerating and our friend recommended GreenLine Plumbing as he used them b4. the technician repaired the valve and cleaned the resin tank. neat job
2025-08-06
Well, our sewer smelled terrible and the basement floor drains were slow. So we called them to clear everything. No more odours, and the drains flow perfectly.
2025-08-18
Our faucet started dripping constantly, and the handle got really stiff. The plumber replaced the worn cartridge and seals the same day..
2025-09-02
Want to solve your plumbing problem today?
At GreenLine Plumbing & Drain Nepean, we work quickly, use reliable parts, and make sure your plumbing is in great shape before we finish the job!

Nepean Neighbourhoods We Serve
- Barrhaven
- Old Barrhaven
- Chapman Mills
- Longfields
- Half Moon Bay
- Stonebridge
- Strandherd Meadows
- Heart’s Desire
- Fallowfield
- Fallowfield Village
- Rideau Glen
- Country Place
- Pineglen
- Grenfell Glen
- Merivale Gardens
- Fisher Glen
- Parkwood Hills
- Meadowlands
- Tanglewood
- Tanglewood-Hillsdale
- Craig Henry
- Centrepointe
- City View
- Woodroffe
- Manordale
- Arlington Woods
- Trend-Arlington
- Qualicum
- Leslie Park
- Bells Corners
- Lynwood Village
- Westcliffe Estates
- Arbeatha Park
- Cedarhill
- Orchard Estates
- Crystal Beach
- Lakeview
- Graham Creek
- Bel-Air Heights
- Bel-Air Park
- Copeland Park
- Ryan Farm
- Kenson Park
- Queensway Terrace South
- Carleton Heights
- Borden Farm
- Crestview