Trusted Backflow Prevention in London, ON – Installation, Testing & Repair
Protect your property from contaminated water with expert backflow preventer installation and maintenance. We offer residential and commercial backflow preventer installation, backwater valve installation, and backflow testing and repair to keep your water supply clean and safe.
Certified Backflow Prevention Specialists
Fast Installation & Repairs with Advanced Tools
Annual Testing & Compliance Certifications
Transparent Pricing – No Hidden Fees
Licensed, Insured & Reliable Service
Trusted by Local Homeowners & Businesses

What Is Backflow Prevention and Why It Matters
Backflow occurs when water flows in the reverse direction, potentially contaminating the potable water supply with harmful substances. This reverse flow in plumbing systems can introduce pollutants such as fertilizers, chemicals, or sewage into clean water lines. Backflow prevention is crucial for ensuring water safety and compliance with local regulations in London, Ontario. Backflow preventers are devices installed in plumbing systems to stop this unwanted reverse flow, protecting both residential and commercial environments from contamination and aligning with health safety standards.
Residential Backflow Preventer Installation
For homes in London, installing a backflow preventer is a vital step in protecting water quality. These devices can be placed on main water lines, irrigation systems, and sprinkler systems to ensure that the water flowing into your home remains safe and uncontaminated. The benefits include:
- Safety: Prevents contamination of drinking water.
- Compliance: Meets local plumbing codes and regulations.
- Peace of Mind: Safeguards against potential health hazards.
Nova Drain & Plumbing Services London offers expert residential backflow preventer installation services, ensuring your home remains compliant and safe.
Commercial Backflow Preventer Installation
Businesses in London, from restaurants to office buildings, must protect their operations from water contamination. Backflow prevention is integral in industries such as healthcare, warehousing, and hospitality, providing clean water essential for day-to-day activities and passing health inspections.
- Restaurants: Ensure kitchen water remains safe.
- Offices: Maintain employee health and safety.
- Healthcare facilities: Prevent contamination that could impact patient care.
Our team at Nova Drain & Plumbing Services offers commercial backflow preventer installation, tailored to meet specific business needs.
Sewer & Backwater Valve Installation
Sewer backflow prevention and backwater valve installations play a crucial role during heavy rains or floods, preventing wastewater from reversing into properties. These valves are strategically installed:
- Basements: Protect against sewage backups.
- Lower-level bathrooms: Prevent potential flooding.
- Laundry rooms: Avoid water-related damage to appliances.
Nova Drain & Plumbing Services London ensures professional sewer and backwater valve installation, protecting your property from potential waste intrusion.
Backflow Preventer Replacement
Like all plumbing components, backflow preventers may require replacement over time due to wear and tear. Signs it may be time to replace include:
- Corrosion: Visible rust or deterioration.
- Frequent Leaks: Persistent water seepage.
- Failure Indicators: Poor water pressure or failed tests.
Customers in London can rely on our licensed technicians for reliable backflow preventer replacement services, ensuring ongoing system effectiveness.
Backflow Testing and Repair
In London, annual backflow testing is necessary to certify the integrity of backflow preventers. Our specialists at Nova Drain & Plumbing Services are equipped to perform thorough inspections:
- Certification: Ensures compliance with local regulations.
- Leak Detection: Identifies potential issues early.
- Repairs: Address any failures or leaks promptly.
We recommend scheduling testing today to maintain certification and a safe water supply.
Professional Backflow Services in London, Ontario
Nova Drain & Plumbing Services London is a trusted provider of comprehensive backflow services in the region. Our licensed and insured plumbers comply with Ontario’s stringent plumbing regulations to deliver complete solutions, including installation, testing, repair, and maintenance. By choosing our services, you benefit from expert knowledge, timely response, and peace of mind knowing your water systems are adequately protected.
If you’re looking for a reliable plumber in London, Nova Drain & Plumbing Services is your trusted local expert for all backflow prevention solutions.
Contact us today for fast, professional service!
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Why Choose Our Plumbers in London

Eco-Friendly Solutions
Friendly Customer Support
Locally Owned & Operated
Licensed & Insured Team
Reviews
After worrying about contaminated water, I needed a residential backflow preventer installed. The team arrived on time, walked me through the process, and set up a reliable system. Now I know my family’s water is safe—such a relief!
2025-10-14
When my café failed its backflow inspection, I searched for backflow preventer installation and found these pros. They handled everything quickly, keeping us compliant and operational. highly recommend!
2025-09-26
Needed a backflow preventer replacement and annual testing. They were fast, knowledgeable, and fairly priced. My system passed inspection—great service for backflow testing and repair!
2025-10-21
A basement flood had me frantically searching for backwater valve installation near me. They came out the same day and installed a sewer backflow preventer—no more stress about backups during heavy rains!
2025-10-01
A friend recommended them when I looked up backflow preventers near me, and I couldn’t be happier. They installed a new preventer, thoroughly tested it, and ensured everything was working perfectly!
2025-10-28
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London Neighbourhoods We Serve
- Berkshire
- Byron
- Carling
- Cleardale
- Fairmont
- Fanshawe
- Glen Cairn
- Glendale
- Highland
- Hyde Park
- Kensal Park
- Lambeth
- Manor Park
- Masonville
- Medway Heights
- Nelson Park
- Northdale
- Northcrest
- Oakridge
- Old East Village
- London Neighbourhoods
- Old North
- Old South
- Orchard Park
- Oxford Park
- Pond Mills
- Pottersburg
- River Bend
- Sherwood Forest
- Southcrest
- Stoneybrook
- Stoney Creek
- Sunningdale
- Trafalgar Heights
- Westminster
- Westmount
- White Hills
- White Oaks
- Wilton Grove
- Woodfield
- Wortley Village
- London Surrounding
- Arva
- Belmont
- Delaware
- Dorchester
- Glanworth
- Ilderton
- Kilworth
- Komoka
- Lobo
- Melrose
- Nilestown
- Thorndale