A home’s peace can be completely shattered without warning. A sudden surge of sewage being pushed into your home due to a missing or faulty backflow preventer valve can be demoralizing. Call AquaRescue to have us come to your home to install or test your required backflow preventer in Toronto.
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What is a Backflow Preventer and Why Is It Required?
A backflow preventer valve is an addition to your outflow sewer pipe that makes sure that drainage only flows one way. In the case of a reverse flow of water, a backflow prevention device helps to prevent pollution being forced into your home and causing contamination.
A backflow preventer is mandated in Toronto by the City of Toronto Water Supply Bylaw (Toronto Municipal Code, Chapter 851) that describes which valve may be best for you.
What Triggers Backflow?
There are several events that trigger backflow, and two of the more common ones are:
back pressure is when surging water pressure outside surpasses the pressure in your sewage outflow pipe. It can push sewage, or black water, back into your sewage outflow pipe and pollute your home. That could include sewage being pushed up your drains.
this is a type of backflow when pressure in the water supply falls below atmospheric pressure. That creates a vacuum in the lines which can draw black water into your home’s pipes and your home.


Backflow Preventer Installation
Double Check Valve Assembly (DCVA) – a DCVA is useful when the risk of contamination is low risk. We install this when the water pressure is constant and there is a minimal chance of backflow.
Reduce Pressure Principle (RP) Backflow Preventer – an RP preventer is considered unequaled but is better suited for higher risk situations. While better than a DCVA, it is more expensive.
Annual Backflow Valve Testing
It is required by the City of Toronto that backflow preventer valves be tested annually under its Backflow Prevention Program. The Water Supply Bylaw states that buildings have backflow prevention testing done once a year and also within 3 days of repairs or changes made to the valve.
Backflow test reports must be sent in to the City of Toronto, but that can be done online. Contact AquaRescue to have a Cross Connection Control Specialist come to your home to complete the test.
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Commercial Backflow Preventer
A commercial backflow preventer is important for a surrounding community especially with cross connections or hazardous materials in businesses. Commercial buildings, like restaurants, hospitals, and car washes, are required to have a backflow preventer to assist in protecting public health.
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Why Choose AquaRescue to Install Backflow Preventer
15+ Years of Experience
With over 15 years of plumbing experience, our expert teams have seen it all and can fix it all.
24/7 Emergency Services
Day or night, rain or shine; AquaRescue will be there when we are needed most.
Licensed & Insured
Fully licensed in the City of Toronto, we are the trusted name in the GTA to install or repair backflow preventers.
Free Estimate
We offer free estimates, and inspections when warranted. Call today to find out how we can help you.
Commercial & Residential Experts
We do plumbing projects of various sizes for residential, commercial, and other kinds of properties.
100% Customer Satisfaction
Our client recommendations are behind our 5 out of 5 stars with HomeStars.
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