Aquaboss provides code-compliant backwater valve installation with full permit handling, camera inspection, and post-install testing. Every installation is tailored to your home’s plumbing layout and qualifies for the City of Toronto’s subsidy program.
Aquaboss provides code-compliant backwater valve installation with full permit handling, camera inspection, and post-install testing. Every installation is tailored to your home’s plumbing layout and qualifies for the City of Toronto’s subsidy program.
A backwater valve is a mechanical device installed in your home’s main sewer lateral to prevent raw sewage from backing up into your basement. The valve includes a one-way flap that closes automatically when reverse flow is detected during storm surges or sewer overloads.
This protection is mandatory in many parts of Toronto for homes with below-grade plumbing connected to the municipal sewer system. We use CSA-approved valve units sealed into the sanitary line, complete with cleanout access for easy future maintenance.
We install backwater valves directly into your home’s main sewer line to stop raw sewage from reversing into the basement during storms. These mechanical devices are designed with a flap gate that remains open during normal drainage but closes immediately when water starts flowing backward from the municipal sewer system.
The flap is triggered automatically by a sudden shift in water pressure—most often caused by heavy rainfall, melting snow, or city sewer overload. By sealing off the sanitary line, the valve creates a one-way path that protects your basement from black water, bacteria, and permanent damage.
Every backwater valve we install includes a cleanout port for inspections and complies with the Toronto Plumbing Code and CSA backflow prevention standards.
Aquaboss follows a precise, code-compliant process for installing backwater valves in Toronto homes. Each step is handled by licensed, insured technicians and aligned with both Ontario Building Code and City rebate program requirements.
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We evaluate if your home requires a plumbing permit based on its location and system configuration. If a permit is necessary, Aquaboss submits the full application on your behalf and ensures all documentation complies with city requirements.
We perform a sewer camera inspection to locate the main sanitary line and check for obstructions. This ensures that the valve is placed in the correct location and that the line is structurally sound.
We cut into the concrete floor and excavate carefully around the sanitary pipe to expose the lateral section. All removed soil and concrete are stored for later backfill and surface restoration.
The valve is fitted into the exposed lateral using CSA-approved couplers and solvent bonding. After installation, we pressure-test the system and apply a gas-tight seal to prevent leaks and ensure safe operation.
After securing the valve, we test it by running water through the system and confirming proper flap function and seal integrity. We then backfill the area with gravel, pour fresh concrete, and restore the surface to match your original basement finish.
If your home has plumbing fixtures located below street level, a backwater valve may be required by city code—and it may be the only protection between your basement and a sewer backup.
Many Toronto homeowners discover the need for a valve only after water or raw sewage backs up through floor drains during or after heavy rainfall. If your drains gurgle during storms or you notice a sewage smell in the basement, these are signs of pressure buildup in the municipal sewer line.
Another red flag is overflowing floor drains or water seeping up from your basement toilet or shower during wet weather. If your house was built before backwater valves became standard, you're likely missing one entirely.
Aquaboss installs code-compliant valves in older homes, finished basements, and any property at risk of backflow through the sanitary line.
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Aquaboss is a reliable backwater valve installation services provider in Toronto.
Certified and insured technicians handle every step of the installation
24/7 response availability for urgent service calls and emergency installs
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The City of Toronto offers up to $1,250 in rebates for eligible homeowners who install a backwater valve as part of the Basement Flooding Protection Subsidy Program.
Aquaboss helps you qualify for the program by ensuring that your installation is fully code-compliant and includes all required documentation.
Backwater valves require annual inspection and occasional cleaning to remain fully functional. If debris or grease buildup prevents the internal flap from closing, the valve may fail during a sewer backup event. Regular maintenance protects your home and preserves manufacturer warranty and rebate program compliance.
The cost to install a backwater valve in Toronto ranges from $1,500 to $3,500, depending on several site-specific factors.
Most homeowners qualify for a $1,250 rebate through the city's Basement Flooding Protection Program, which significantly lowers the out-of-pocket expense.
Most Aquaboss customers pay between $300 and $2,250 after the City rebate is applied.
We provide itemized pricing before work begins, with no hidden charges.
Our team offers a no-cost consultation and price quote, including eligibility assessment for the rebate.
We guide you through every step—from permit to final inspection—ensuring your installation qualifies.
Aquaboss, a Toronto basement waterproofing company, offers a no-cost consultation for homeowners who want to install a backwater valve and qualify for the city's Basement Flooding Protection rebate.
During your consultation, a certified technician will inspect your basement layout, determine the best location for valve placement, and confirm whether your plumbing setup meets rebate eligibility.
Our team also handles all permit filings and post-installation documentation required by the City of Toronto subsidy program.We make the rebate process easy by supplying photos, invoices, and clean post-job reports tailored for approval. You don’t have to worry about paperwork delays or rejected submissions.
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Locations
Basement waterproofing Oshawa
Basement waterproofing Orillia
Basement waterproofing Brampton
Basement waterproofing North York
Basement waterproofing Richmond Hill
Basement waterproofing Scarborough
Basement waterproofing Brantford
Basement waterproofing Cambridge
Basement waterproofing Markham
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