Consumer information standards for water efficiency
These regulations require that water efficiency and consumption information must be provided to consumers for major water using products – washing machines, dishwashers, showers, toilets, urinals and taps. The efficiency rating is indicated in stars, more stars indicate better water efficiency. Water consumption is given in litres per minute, flush, or wash cycle depending on the product.
Consumer Information Standards (Water Efficiency) Regulations 2010
The Australian / New Zealand Standard AS/NZS 6400:2005 Water efficient products - Rating and labelling has been established as the basis for the regulations. It defines each product class and sets out the tests and rating criteria to determine a product’s water efficiency and consumption. The regulations set out variations to the standard. This information must be available to a prospective purchaser at the point of sale.

