Backflow Prevention

Hunter Water’s water supply system is designed to ensure that water flows to a customer’s property under pressure, but if this pressure is not maintained or a cross connection occurs, there is a chance that water could be drawn back into our system.

All properties connected to our water supply must install a site containment backflow prevention containment device appropriate to the property's hazard rating.

Only licensed plumbers with backflow prevention accreditation issued by a registered training organisation can install, inspect, commission and test backflow devices.

Before you install a backflow prevention device, you should check the available water pressure and the customer's pressure and flow requirements. A site assessment should also be done to confirm the hazard rating of the property and its services.

Example of Hazards and Location of Mandatory Backflow Prevention Devices

Click on the image below to help you understand your responsibilities.

Hazards Backflow Prevention thumbnail