Backflow prevention
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Some properties will need a device on their main water meter to help prevent backflow. Here's how to assess and prevent backflow from your property.
What is backflow?
Backflow happens when water from a property is drawn back into the water system, affecting the community's drinking supply.
Backflow can happen when:
- there is a break in the water main which supplies your property
- water is pumped from the main water supply during a fire
- you are using water at a higher pressure
- there is high water demand from the main water system.
Some properties will need a device on their main water meter to help prevent backflow.
Assessing backflow risk
We'll assess your backflow risk and tell you if you need a backflow prevention device when you apply for a property connection.
Backflow prevention devices are required on medium and high-risk properties like commercial and industrial properties or residential properties with a bidet, toilet douche or below ground rain water tank.
