Backflow prevention

Types of devices

There are different types of devices which can be installed depending on the hazard rating of the purposes carried out on the property. The three hazard ratings identified by AS/NZS 3500:1 are:

  • high hazard – any conditions, device or practice which in connection with the water supply systems has the potential to cause death.
  • medium hazard – any condition, device or practice which in connection with the water supply could endanger health.
  • low hazard – any condition, device or practice which in connection with the water supply system would constitute a nuisance but not endanger health.

New devices

New devices may be associated with a Plumbing and Drainage Compliance Permit and will be identified by Councils Plumbing Officers if required.

It is the responsibility of the licensed plumbing contractor to submit a Form 4 to the Plumbing Industry Council and forward a copy of the completed Form 9 to Council. The device will then be added to Council’s Backflow Register.

Removing a device

New devices may be associated with a Plumbing and Drainage Compliance Permit and will be identified by Councils Plumbing Officers, if required.

It is the responsibility of the licensed plumbing contractor to submit a Form 4 to the Plumbing Industry Council and forward a copy of the completed Form 9 to Council. The device will then be added to Council’s Backflow Register.

Replacing a device

It is the responsibility of the licensed plumbing contractor to submit a Form 4 to the Plumbing Industry Council and forward a copy of the completed Form 9 to Council.

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