Backflow is unsafe water flowing backwards into the drinking water supply. This unsafe water may carry contaminants that could potentially harm people’s health.
A backflow prevention device stops the potential backward flow of unsafe water into the drinking water supply.
All commercial and industrial properties require a backflow prevention device.
As a property owner, you are responsible for ensuring that the correct backflow prevention device is installed. A licensed backflow plumber can inspect your premises and advise you on your property’s needs.
For general information on backflow prevention and common questions and answers, refer to our backflow prevention fact sheet.
For plumbers
Download and complete our backflow test form.