Does my business need a backflow test in Toronto?

Most commercial, industrial, institutional, and multi-unit (Part 3 residential) properties in the GTA require annual backflow preventer testing under municipal cross-connection control programs — especially businesses with water-using equipment such as restaurants, car washes, salons, pet grooming, medical and dental offices, and gyms. If a backflow preventer is installed or the City has sent a notice, annual testing is mandatory.

Do single-family homes need backflow testing?

Most single-family homes are not subject to the same requirements. Exceptions can include lawn irrigation systems, pools, or any property that has received a notice from the City.

Book a Test Call Now

Free 30-Second Check

Do I need a backflow test?

Answer three quick questions and get an instant answer based on Toronto’s backflow prevention requirements — no obligation.

What best describes your property?

Is a backflow preventer already installed?

A backflow preventer is a brass valve assembly, usually near where the water main enters the building.

When was it last tested?

Do I need a test?