If you’re a homeowner in North York, protecting your home from sewer backups is critical — especially during heavy rainfall or city sewer overloads. At Leaquida Waterproofing, we provide expert backwater valve installation in North York, helping you safeguard your basement and plumbing system from unexpected backflow.
Our licensed technicians install reliable sewer backwater valves that meet all municipal standards. Whether you’re replacing an old system or adding protection to a newly finished basement, we deliver custom solutions for backflow prevention in North York homes.
What Is a Backwater Valve and Why Do You Need One?
A backwater valve — also known as a backflow valve or check valve — is a one-way gate installed in your main sewer line. It allows wastewater to flow out of your home but blocks any reverse flow coming from the municipal system.
Without a valve in place, pressure surges during storms or blockages can cause raw sewage to back up into your basement through floor drains, toilets, or sinks. A professionally installed valve prevents this disaster.
Why choose us?
Respectful appearance
Up-front pricing
No overtime charge
We are available on holidays, evening and weekends
Quick and efficient service
24/7 customer service
We are the best in the field!
Fully licensed
Transparent process
Insured
Affordable
Sewer Backwater Valve Installation: What’s Included
Our comprehensive sewer backwater valve installation in North York includes:
Site inspection and plumbing line assessment
Selection of the correct valve type (standard or normally open)
Excavation and access to the main sewer line (as required)
Proper installation of the backwater valve system
Connection to sump or weeping tile drainage (if applicable)
Full testing and city permit coordination
Backfill, site cleanup, and documentation for rebates (if eligible)
We handle everything from start to finish — ensuring your home is protected and your installation is fully compliant with North York regulations.
Backflow Prevention in North York: Key Benefits
A properly installed backflow prevention valve offers critical protection and peace of mind, especially in densely populated neighbourhoods prone to water system pressure changes.
Benefits include:
Flood Prevention: Stops sewer water from backing up into your basement during storms or city sewer surges
Property Protection: Prevents expensive damage to flooring, drywall, furniture, and mechanical systems
Health & Sanitation: Blocks raw sewage and harmful bacteria from entering your living space
Insurance Compliance: Some policies require valve installation for flood coverage
Rebate Eligibility: The City of Toronto offers subsidy programs for eligible installations
Reviews about us
Quick, professional and at very reasonable cost. No hidden costs. The installation was complicated as the municipal sewage backed up when the pipe was cut, but the team did not complain despite working in harsh conditions.
Lev, WhitbyVacancy
Leaquida Waterproofing was prompt, courteous and thorough. We would recommend to anyone. We had a backwater valve installed. I called Sunday, got a quote Monday, has the work done the following Monday (including issuing of building permit).
Trisha GrantVacancy
They have installed sump pump system in our house. They were very much on time and during the installation they have worked very clean.
You may rely on their advises.
Highly recommended.
Burçin, TorontoVacancy
Do I Need a Professional for Backflow Valve Installation?
While DIY kits exist, installing a backwater valve requires advanced plumbing knowledge and permits. Improper installation may result in failure, fines, or lack of insurance coverage.
By hiring Leaquida Waterproofing, you ensure:
Proper valve sizing and placement for your home’s plumbing system
Compliance with North York and Toronto plumbing codes
Correct slope and sealing to avoid future leaks
Warranty-backed workmanship and customer support
Access to rebate and subsidy programs through proper documentation
Our experienced crew completes the job cleanly, safely, and on time — so you don’t have to worry about long disruptions or subpar work.
How a Backwater Valve Works
The backwater valve sits in your home’s main sewer line. Under normal conditions, wastewater exits freely through the valve. If water or sewage tries to flow back toward your home, the valve flap automatically closes, blocking the entry.
The system works passively — no electricity or manual activation required — and provides continuous protection for your home.
Why Choose Leaquida Waterproofing for Backwater Valve Installation in North York?
We are one of the most trusted backwater valve installation contractors in North York. Homeowners choose us for our:
10+ years of waterproofing and drainage experience
Skilled technicians who specialize in basement flood prevention
Transparent pricing, permits, and code-compliant installations
Local knowledge of North York neighbourhoods, soil, and plumbing systems
Fast turnaround and professional cleanup after the job is complete
We proudly serve areas across North York, including Willowdale, Downsview, Don Valley Village, York Mills, and Bathurst Manor.
Get a Quote for Backwater Valve Installation in North York
Don’t wait for a storm or sewer backup to damage your basement. Contact Leaquida Waterproofing today to request an inspection and get a free quote for backflow valve installation in North York. We’ll help you determine the right solution, ensure full code compliance, and protect your home for years to come.
Title step section
CLOGGED OR BROKEN WEEPING TILE
WATER TABLE OR STREAM
FOUNDATION WALL CRACK
WINDOW WELL
FLOOR WALL JOINT
FLOOR DRAIN
OVER TOP OF FOUNDATION WALL
DOWN STACK / SEWER DRAIN
SUMP PUMP AND WELL
FLOOR CRACK
FOUNDATION WALL SEEPAGE
FAQ about Backwater Valve Installation in North York
Do I really need a backwater valve in North York?
Yes. North York is part of Toronto’s combined sewer system, which is vulnerable to overflows during heavy rain. A backwater valve protects your home by preventing sewage from backing up into your basement through floor drains and plumbing fixtures.
What’s the difference between a backwater valve and a backflow valve?
They are essentially the same. A backwater valve is a type of backflow prevention device installed on your home's main sewer line. It prevents water or sewage from re-entering your home when there's a reverse flow in the city sewer.
Is a permit required for sewer backwater valve installation in North York?
Yes. In most cases, a plumbing permit is required for installing a backwater valve. Leaquida Waterproofing handles all necessary permits and inspections to ensure your system is fully compliant with local codes.
Does the City of Toronto offer rebates for backwater valve installation?
Yes. Eligible homeowners in North York can apply for a rebate through the City of Toronto’s Basement Flooding Protection Subsidy Program. We provide the required documentation and guidance to help you apply.
How long does it take to install a backwater valve?
Most backwater valve installations are completed in one day, depending on access and whether excavation is needed. We'll provide a clear timeline during your estimate.
Can I install a backflow prevention valve myself?
It's strongly discouraged. Professional installation is necessary to ensure proper valve function, municipal compliance, and eligibility for rebates or insurance claims. Improper DIY installation can lead to failure or code violations.