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Backwater Valve Installation Services for Toronto & the GTA Customers

Proudly serving the entire GTA

Backwater valve installation in Toronto & the GTA is one of the smartest ways to protect your home from basement flooding and costly sewage backups. When the city’s storm system is overwhelmed, your main sewer line can push wastewater back into your home. A properly installed backwater valve prevents that by blocking the flow before it causes damage.

Backwater valve installation from $1,500
Eligible for city rebates — save up to $1,250. Final pricing depends on site conditions.

Backwater valve rebate support for Toronto/GTA residents

Toronto residents may qualify for up to $1,250 in rebates when installing a backwater valve. For homes across the GTA, our team will guide you through permits, paperwork, and eligibility so you don’t miss out on available programs.

$25.00 OFF

Backwater Valve Service

Present this coupon at the time of service to save $25 on your backwater valve installation or maintenance. This offer is limited to one per household, cannot be combined with other promotions, and is available at participating locations. 

What is a backwater valve and why does it matter?

A backwater valve, also known as a sewer backflow prevention device, is one of the most important flood protection devices a home can have. It’s installed on your main sewer line to prevent sewage and wastewater from backing up into your home during heavy rains or municipal sewer overflows.

This simple device protects your floor drains, plumbing fixtures, and finished basement from raw sewage backups and expensive flood damage.

backwater valve installation Toronto
backwater valve installation cost

Do you need a backwater valve installed?

Knowing whether your home needs a backwater valve installation comes down to risk, and in Toronto & the GTA, it’s higher than most homeowners think.

You likely need a backwater valve if:

  • Your home is in an older Toronto/GTA neighbourhood with no built-in flood protection.
  • You’ve experienced sewer backups, drain clogs, or standing water after a storm.
  • You’re finishing or renovating your basement.
  • You’ve noticed water or sewage near your floor drains.
  • You want to qualify for your City’s Backwater Valve Rebate Program.

Our backwater valve installation process

1
Drain Line Inspection & Flood Risk Assessment

Our certified plumbers inspect your sewer line and assess the risk of basement flooding in your area.

Drain Line Inspection & Flood Risk Assessment
2
Permit & Rebate Review

From permits to paperwork, we manage it all and verify if your home is eligible for the City of Toronto backwater valve rebate, or other local rebate programs within the GTA.

Permit & Rebate Review
3
Professional Installation

Our team excavates, installs the backwater valve, and restores the work area, usually in one visit.

Professional Installation
4
System Testing

We ensure the valve is working properly, test the drainage system, and walk you through proper maintenance.

System Testing
5
Rebate Submission Support

We help with rebate forms, documentation, and proof of installation.

Rebate Submission Support
back water valve installation

25+ years of flood prevention expertise

For over 25 years, Drain Rescue has helped Toronto & GTA homeowners and businesses prevent costly basement floods. Our skilled plumbers use advanced installation methods, regulated products, and professional-grade equipment to ensure long-lasting protection.

Our clients are always happy with our work!

Jodi Tillotson
2 weeks ago
We had an awesome experience with Drain Rescue. From Charles who came to quote on the job and explained everything in detail to Oleg who did the job. Our house is very old and the plumbing was added after the house was built. The job was not an easy one and he managed to get it done quickly and efficiently. I'm very grateful for the team that took care of us. Thank you Drain Rescue!
Nicole Steve
3 weeks ago
Excellent experience from start to finish! Brian was professional, efficient, and incredibly helpful. He quickly presented several options that suited exactly what I was looking for and completed the work with great attention to detail. I highly recommend their services to anyone looking for reliable, high-quality, and professional service.
Michelle Tran
4 weeks ago
I requested a quote and heard back within the hour to have a plumber come out the very next day. I was really impressed with how quick and seamless the entire booking process was.
Dennis arrived right on time, diagnosed the issue quickly, and got it fixed without any hassle. Highly recommend this team for efficient and reliable service!
Shona Tapia
1 month ago
DRP came to my aid after another large company came in, attempted an approach and quoted me for a large pipe repair. Within 2 hours they came to my door for a free assessment. Roman was fast, efficient, and fixed the blockage in my shower drain in less than 10 minutes. Would highly recommend their services!
Edward Hanna
2 months ago
I was very pleased with the prompt service as well as very useful tips and advice for keeping my drains clean. Crew arrived as promised and left the work area clean as well as tested the drain in my presence. Would definitely recommend
Jeff Engerer
2 months ago
Dennis came within 2 hours of our Sunday evening call on a long weekend. He immediately explained how he would assess our issue and quickly determined the work required. The initial process cleared our problem but the equipment showed that the drain was clogged with roots. Dennis worked out our price which was reasonable considering the scope of work involved. We were impressed with Dennis' friendly and professional demeanor throughout our meeting.
Yaro M
3 months ago
I am a first time client at this company and my experience was amazing. From the initial phone call with Olenka I felt completely comfortable booking their services. Olenka was courteous, professioanl, patient and answered all my questions & concerns. She gave me the confidence to hire Drain Rescue Plumbers over another few companies I was talking too. Olenka is a true asset to this company and her customer service was above and beyond my expectations. I felt completely confident hiring this company after speaking with her.

Thank you again Olenka for all your help and keep up the great work Drain Rescue Plumbers team!
Filippo Spadafora
3 months ago
I recently called Drain Rescue Plumbers, and I couldn’t be more impressed with their service. From the moment I reached out, they were very helpful and managed to get someone to my house quickly.
The team was professional and efficient. They diagnosed the issue quickly, explained exactly what needed to be done, and completed the job with high-quality results. It’s a relief to find a company that values your time and provides honest, transparent service without any hidden surprises.
If you’re looking for a reliable plumbing team that gets the job done right the first time, I highly recommend Drain Rescue Plumbers. I will definitely be using them for any future needs!
Cindy Taiwan
6 months ago
Had good experience with the company and the plumber Michael. This morning found a leak from the tailpiece of the bathroom sink drain, then called. He came in on the same day and on time. He's friendly and provided 3 months warranty. He deserves a good review, so I'm writing now.

From Hamilton, Ontario
Golfer
7 months ago
We had the worst problem and they solved it in 2 days. Our 75 year old house had plugged sewer pipes inside and out. Tree roots had grown into the cracked clay pipes and the entire system had to be replaced.
They opened the basement floor and replace all with new pvc pipes.
Then they dug a 9 foot deep hole at the connection to the street line.
The most amazing part was the fabrication of a 50 foot section of pipe that was pulled into the hole and through to old clay pipe to connect to the house.
Excellent work.

Backwater valve installation for homes across Toronto and the GTA

Proudly serving residential and commercial properties across Toronto and the GTA with licensed, flood-prevention valve installation services.

Frequently Asked Questions

How much does Backwater Valve Installation cost in Toronto/GTA?

Install costs usually fall between $1,500-$2,500, depending on your home’s layout and excavation needs. Toronto residents may be eligible for up to $1,250 back through the Basement Flooding Protection Subsidy Program. Across the GTA, we’ll handle permits and confirm which local rebates you may qualify for.

If your home was built or renovated recently, it may already have a valve, but many older homes in Toronto and throughout the GTA do not. We can inspect your plumbing system to confirm whether a valve is present and functioning.

Typically, it’s installed on the main sanitary drain line, either in the basement floor or just outside the foundation wall. We’ll determine the best spot based on access, flow direction, and city code.

Toronto requires a permit and inspection for every backwater valve installation, and similar rules apply across the GTA. We handle the paperwork, permits, and post-installation inspection so the job is fully compliant.

Installing a backwater valve can reduce your insurance premiums. In Toronto, eligible homeowners may receive up to $1,250 through the City’s Basement Flooding Protection Subsidy Program. Across the GTA, rebate programs vary by municipality—we’ll confirm what applies to your home and provide everything your insurer might request.

Most installs take just one day. We prep the site, install the valve, test it thoroughly, and leave the area clean and patched.

Yes. Like any mechanical valve, it should be inspected annually to ensure it’s clear of debris and working properly. We’ll show you how to check it, or we can maintain it for you.

Absolutely. We offer quick, non-invasive inspections to confirm whether you need a backwater valve and whether you’re eligible for the city’s rebate program.

No. A sump pump removes water from around your foundation, while a backwater valve blocks sewage from backing into your pipes. Ideally, homes should have both installed for full protection.

Nope! Most backwater valves operate silently and only engage when needed.

No. In Toronto, only a licensed plumber can install a backwater valve. Attempting DIY risks code violations and could void your rebate eligibility. Across the GTA, we ensure installations meet municipal requirements.

One Small Valve. One Big Difference in a Storm.

Protect your home from flooding, health hazards, and sewage backups with a trusted backflow solution.