Sewer Backup Toronto
Sewer backups can happen at any time. Luckily, our professional plumbers are available 24/7 to assess your sewer system and unclog it before raw sewage enters your home or commercial property.
At Water Pro, we take guesswork out of sewer cleaning services in Toronto. Our team uses an advanced camera to inspect the exact cause of the reverse flow, helping us provide accurate repairs without unnecessary digging.





Best Sewer Backup Contractor in Toronto
For more than 25 years, Water Pro has been the go-to contractor for sewer-related services in Toronto. We’ve earned our reputation for resolving backed-up sewers quickly. Indeed, we’ve completed over 29,000 successful sewer cleanups and other plumbing projects in Toronto. That number isn’t just a milestone. It’s a reflection of the trust thousands of customers have placed in us.
In addition, we’re proud to be one of the highest-rated sewer service providers in Toronto. With an average of 4.9-star rating on Google and impressive customer feedback on HomeStars, our reviews highlight our professionalism, punctuality, and reliable workmanship.
Each of our skilled plumbers is fully certified, trained, and backed by many years of experience. That means every sewer line cleaning job is completed to code, with full attention to safety and quality. We’ll inspect your entire drainage system, identify the cause of the reverse flow, and fix it. If you’re dealing with a sewer backup problem, don’t hesitate to contact us.
Reliable Sewer Backup Solutions in Toronto
A sewer line backup is a plumbing nightmare, a threat to your property’s structural integrity, and poses a serious health risk. When wastewater starts flowing back through your basement floor drain, it usually means your main sewer line is blocked or damaged. Tree root intrusion, collapsed pipes, grease buildup, or foreign objects can all cause sewage to reverse its path and spill into your home or commercial building.
If left unaddressed, sewer backups can lead to property damage and exposure to disease-causing organisms. At Water Pro, we bring over 25 years of experience in handling residential and commercial sewer backups across Toronto. Our trained and licensed plumbers use tech-driven plumbing tools such as sewer inspection cameras and drain locators to assess and restore your sewer line.
At Water Pro, we aim to restore your clogged or damaged sewer line and prevent a basement flood (backed-up sewage). When you contact us because of a sewage backup, we’ll respond quickly, send skilled professionals to assess the blocked sewer, and recommend the best way to fix it. So, pay attention to the early warning signs of a sewer backup and request our emergency services.
Some of the common warning signs of an impending sewerline backup include:
Slow Draining Fixtures
If your sinks, bathtubs, or showers are draining slower than usual, especially all at once, it could mean there’s a blockage deep in your main sewer line, not a clogged drain. Let our professional plumbers inspect your home’s plumbing system and identify the exact cause of slow drains.
Gurgling Sounds from Your Drains
Unusual bubbling or gurgling noises when water is running often point to air trapped in the plumbing system. This happens when waste and air are being pushed back up due to a blocked drain or sewer line.
Raw Sewage Smell from Your Drains
Sewage smells in your kitchen, bathroom, or basement are a red flag. They indicate that wastewater isn’t flowing out properly and may be backing up from the sewer system.
Water Backing Up into Plumbing Fixtures
If flushing the toilet causes water to bubble up in the tub, or running the washing machine backs up water into the floor drain, your main line may be blocked. Let our experienced professionals inspect it.
Wet Spots in the Yard or Unusual Plant Growth
A cracked or leaking sewer line can cause standing water in the yard. You might also notice sudden patches of green, fast-growing grass, especially over the line’s path.
Recurring Clogs across Multiple Drains
Frequent drain blockages in different parts of the house, even after cleaning, often mean the issue lies within the main sewer line.
Basement Drain Overflow
Another sign that you’re dealing with a sewage backup is excess water (after heavy rain) or wastewater backing up from a basement drain. This usually signals a complete blockage and requires immediate professional help.
It’s Time to Call Our Plumber
If you’re seeing these signs, don’t wait until waste water pools in your basement. Contact us. At Water Pro, we offer professional inspections to determine whether your plumbing system is at risk of a sewer backup. Our licensed technicians use advanced camera inspections to identify the cause and location of the issue.
Slow drainage could be an indicator that your drains need cleaning. However, it can also indicate a failing sewage system that could reverse its flow at any time. Let our team assess your entire sewage line to ensure it’s flowing efficiently.
Why Choose Our Sewer Backup Solutions
Sewer Line Camera Inspection
Before we begin any sewer line cleaning, we conduct a detailed camera inspection. This involves inserting a waterproof, high-resolution camera into your sewer line to capture real-time footage from inside the pipe. The camera reveals the exact location and cause of the reverse flow. This could be tree roots, grease buildup, or a collapsed pipe.
Satisfaction Guarantee for Clients
As a family-run company, we take client satisfaction seriously. That’s why we back all sewer cleaning services with a satisfaction guarantee. If you’re not fully satisfied, we’re not finished with the sewer or drain cleaning service. We use the latest sewer-safe cleaning tools and proven methods to get the job done right. No shortcuts.
Highly Experienced Plumbers at Your Service
24/7 Emergency Response: Plumbing problems, particularly sewer line backups, don’t wait, and neither do we. Our team is available around the clock to respond quickly and protect your property from sewage damage.
Fully Licensed and Insured: All work is carried out by licensed professionals. You get dependable sewer and plumbing solutions with full coverage for your peace of mind.
Over 25 Years of Experience: With decades of hands-on expertise, we know how to resolve complex plumbing issues like sewer backups.
Free, Honest Estimates: Before we begin fixing your sewer line, you’ll receive a clear, no-obligation quote. We believe in transparency, so there are no surprises on your bill.
25-Year Warranty: Our waterproofing and foundation work is backed by a 25-year warranty. This is because we stand by the quality of our repairs.
Proudly Local: As a locally owned business, we take pride in offering trusted, personalized service to homeowners and businesses across Toronto and the GTA.
We Are At Your Service
24/7 Emergency Help
Day or night, solving plumbing issues fast to keep you safe.
Licensed, Insured
Our professionals deliver reliable waterproofing and plumbing solutions.
25+ Years of Expertise
Decades of experience in quality, lasting repairs and installations.
Free Estimate
Get upfront, no-obligation pricing—no hidden costs or surprises.
25-Year Warranty
Long-lasting protection for waterproofing and underpinning projects.
Locally Owned
Dedicated to dependable, personalized service for our community.
Our Reliable Sewer Backup Solutions
Keeping your drains clean is an effective way to prevent drain clogging, backups, and other drainage system issues. That’s why the professional plumbers at Water Pro take a personalized approach to every drain cleaning job.
Whether you need your bathroom drain cleaned or regular drain maintenance, we’re licensed drain contractors you can count on. Here are our professional drain services in Toronto and across the GTA.


01Main Sewer Lines
Main sewer lines are the largest pipes in your property’s plumbing system. When they get clogged by grease, waste, or foreign materials, wastewater will have nowhere to go. Our team uses powerful tools and camera inspection to locate and clear blockages safely. This way, we restore proper flow and protect your home from serious water damage.
02Basement Floor Drains
Reverse flow in basement drains is often the first visible sign of a sewer problem. These low points quickly flood when the main line is blocked. We’ll clean the drain, flush the system, and check for deeper clogs. Remember, your basement is susceptible to water damage if it gets flooded with wastewater. We aim to keep your basement dry and prevent costly repairs.
03Sewer Stack Pipes
Vertical sewer stack pipes connect toilets, sinks, and tubs to the main sewer line. If these pipes are blocked, you’ll notice slow drainage or foul smells from your kitchen sink, shower, and other parts of your home. We clean these stack pipes thoroughly using specialized equipment to remove dirt buildup and restore proper flow to every plumbing fixture in your home.
04Sewer Cleanout Access
Your ‘sewer cleanout access’ is the direct entry point to the main sewer line. We use this access to reach deep blockages quickly without digging. Our team can clear the line using a drain snake or hydro jetting, depending on the location and nature of the clog. With our drain cleaning services, you can be sure your drains and sewer line won’t back up.
05Exterior Sewer Lines
The sewer pipe connecting your home to the city line can become clogged or damaged by soil movement, aging infrastructure, or tree roots. We’ll clean these exterior lines using trenchless methods when possible. Depending on the location of the clog, we can use hydro jetting or drain snaking.
06Proactive Measures
Preventing sewer backups starts with proactive maintenance. Our regular maintenance services for drains and sewer lines help clear debris, grease, and buildup before they become blockages. For properties with older plumbing or heavy usage, scheduled routine maintenance reduces the risk of costly sewer backups and other plumbing emergencies.
07Backwater Valve Installation
A new backwater valve is a simple yet powerful device that prevents sewage from flowing back into your home during heavy rainfall or municipal overloads. Our licensed plumbers install these valves to meet Toronto’s plumbing code and ensure proper function. This small investment offers major protection, especially in flood-prone areas.
At Water Pro, we’ll inspect your system, recommend the right location for the valve, and handle the entire installation.
Professional vs. DIY Sewer Backup Solutions
Pouring chemical drain cleaners or using a plunger might offer short-term relief, but they rarely solve a backed-up sewer line. Most sewer-related issues are complex and require specialized equipment to fix. If the cause is tree roots, broken pipes, or compacted waste, only professional tools will work. Therefore, contact a professional if you have noticed signs of a sewer backup.
Toronto property owners can benefit from our professional plumbing services. Here’s a detailed comparison of DIY and expert sewer solutions.
Feature |
DIY Sewer Cleaning |
Professional Sewer Cleaning |
Tools Used |
Plunger, drain snake, chemical cleaners |
Power auger, sewer inspection camera, hydro jetting |
Problem Detection |
Based on guesswork |
Real-time video inspection |
Effectiveness |
Temporary relief |
Long-lasting solution |
Risk of Pipe Damage |
High risk of damage due to harsh chemicals or wrong tools |
Low risk of damage |
Root Intrusions or Deep Clogs |
Cannot clear tree roots or distant blockages |
Removes tree roots, buildup, and deep obstructions |
Time & Convenience |
Time-consuming and uncertain |
Quick, reliable, and fully managed |
Professional sewer cleaning prevents debris accumulation and serious property damage associated with backed-up sewers. For Toronto homeowners and businesses, choosing a licensed plumber means less stress, faster results, and a healthier plumbing system overall.
FAQs
What causes a sewer line backup?
Sewer backups are often caused by tree root intrusion, grease buildup in the sewer line, broken sewer pipes, or flushing items like wipes or paper towels. In older Toronto homes, shifting soil and collapsed clay pipes are common causes.
How can I tell if my sewer line is backing up?
Common signs include gurgling drains, water backing up in basement fixtures, slow drainage across multiple fixtures, and foul smells near floor drains. If these occur, contact a licensed plumber immediately.
Can I fix a sewer backup myself?
Minor drain clogs may be cleared with a plunger, but sewer line backups usually require professional equipment. DIY methods don’t reach deep obstructions and can worsen the problem if the pipe is damaged.
What should you do if sewage backs up into your basement?
Avoid using any plumbing fixtures, then turn off water supply if possible, and contact an emergency plumbing service. Sewage poses serious health risks and must be handled by trained professionals. At Water Pro, we respond quickly to plumbing emergencies.
How can homeowners prevent future sewer backups?
Schedule regular drain and sewer cleaning, avoid flushing non-biodegradable items, and don’t pour grease down the sink. Installing a backwater valve and catching early signs through inspections can also help.
How much does it cost to fix a sewer backup in Toronto?
The cost depends on the severity of the blockage, the length of the affected pipe, and the repair method required. Basic snaking may start at a few hundred dollars, while more complex repairs or replacements can cost several thousand dollars. At Water Pro, we provide free estimates so you know exactly what to expect.
What Our Clients Say

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