What is backflow?

Backflow is the unwanted flow of contaminated water reversing into your clean potable water supply system. Backflow is typically caused when there is an abnormal drop in water pressure coming from your home and contaminate water is siphoned back into your clean water supply. This is typically referred to as back-siphonage and/or back pressure.

Backflow Testing


At Tourangeau Mechanical, we test all our backflows in compliance with the B64.10-11/B64.10.1-11 (CSA Standards).

We are registered with Ontario Water Works Association (OWWA).

We have 3 to 5 backflow testers at all times.

Our testing gauges are calibrate every year as per CSA Standard requirements.

Backflow Repairs


Every device is inspected thoroughly by our experienced tester to confirm its failure.

Failure is often cause by debris. Sometimes the devices can simply be cleaned to get a passing result. However, debris and water hammer can damage the internal parts causing failure.

Backflow Installation


All installations are done as per CSA and Local Standards.

Every installation is different due to site conditions and must be looked at to provide a proper quote.

Call today to schedule an appointment with one of our specialists to go over a new installation or relocation.

What is Ottawa’s backflow prevention program?

The city of Ottawa provides safe drinking water through their distribution system. New regulation from the Safe Drinking Water Act and Ontario Ministry of the Environment and Climate Change (MOECC) requires all water purveyors to protect the water supply from the delivery point.

Starting January 1st 2018 14,000 business, industrial, commercial, institutional and multi-residential properties will be impacted by this mandate. The city of Ottawa will be contacting these property owners and requiring them to comply program requirements. These requirements include:

  • Hire a qualified person to complete a site survey every five years and submit it to the City for review.
  • Hire a qualified person to install backflow devices as required.
  • Hire a qualified person to test devices annually and submit results to the City.
  • Review data or information that is submitted by testers on their behalf, including site surveys and test reports.
  • Maintain backflow devices and have them repaired or replaced as required.

For more information, visit the City of Ottawa’s Backflow Prevention Program page.

Why Tourangeau Mechanical is Ottawa’s backflow expert.

Tourangeau Mechanical is Ottawa’s best backflow testing and prevention service provider. With over 600 backflows tested annually and close to 100% of our clients are repeat customers, Tourangeau Mechanical has the experience needed to successfully install, repair, and test your backflow prevention devices. Allow us to provide you with our top of the line service and experience for all your backflow needs

Our Backflow services include:

  • City of Ottawa backflow testing & reports
  • Backflow installation
  • Backflow repair
  • Backflow maintance
  • Backflow survey recommendations

Get in touch with one of our backflow experts today!

Tourangeau Mechanical is an expert in backflow installation, testing, and prevention. We test over 500 backflows annually in the Ottawa area.


Business Hours


Contact Info

Address: 102-2555 Blackwell St., Ottawa, ON K1B 4E4
Phone: (613) 747-0174
Fax: (613) 747-2073