banner-placeholder

Backflow Information

Backflow occurs when the water delivery main is at a lower pressure than the internal plumbing system. Every connection to the drinking water supply must have a backflow prevention device appropriate for the land use and activities carried out at the property.

All properties with a connection to Lancelin South Water’s water supply that present with a low, medium or high hazard rating are to install appropriate backflow prevention for containment purposes.

A backflow incident can cause health concerns for the people using water within your property. Before you install a backflow prevention device, you should check the available water pressure and the flow requirements.

There are different types of devices which can be installed depending on the hazard rating of the processes carried out on the property (please refer to ‘Backflow-Land use Code’).

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 system 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

Backflow prevention devices at the boundary are owned by the property owner and maintained by the owner/occupier. Property owners are responsible for testing high and medium risk rating devices at commissioning, and after any maintenance or at least annually. A licensed plumber will need to complete the report.

Backflow prevention devices at the boundary are owned by the property owner and maintained by the owner/occupier. Property owners are responsible for testing high and medium risk rating devices at commissioning, and after any maintenance or at least annually. A licensed plumber will need to complete the report.

Download the Backflow Landuse Code PDF