Water Efficiency Labelling and Standard (WELS) is a labeling scheme initiated by the Australian Government ( underpinned by Australian Standards) to help Australian households conserve water and money.
All WELS products are registered, rated and labelled according the requirements of the WELS Standard AS/NZS6400:2005 Water-efficient products-Rating and labelling. On 1 July 2006, it became mandatory across Australia to carry a (WELS) Water Rating label when selling showers and tapware intended for use over kitchen sinks, bathroom basins and laundry tubs.
The WELS water rating label provides water efficiency information for water-using household products. It is similar in appearance to the energy rating label. The label carries two important pieces of information to help the consumer to compare products - stars and water consumption or water flow rates.
The label shows a 1 to 6 star rating for a quick assessment of the model's water efficiency - the more stars on the label the more water efficient the product and a number showing the water flow per minute based on laboratory tests
The WELS Scheme applies to tap ware (equipment) that includes any tap or tap outlet that is for use over a basin, kitchen sink or laundry trough regardless of the operating mechanism.It does not apply to a tap that is used solely over a bath.
Taps are differentiated based on the nominal flow rate @ 250kPa. However, flow rate measurements are made at 150kPa and 350kPa to determine flow rate regulation across this pressure range.
Tap ware is also required to satisfy basic material, design and performance requirements. These requirements are identified in AS/NZS 3718 (Water Supply – Tap ware) and the Standard that outlines the WELS requirements in terms of the star ratings, AS/NZS 6400.
The technical requirements of AS/NZS 3718 enable the establishment of a rating based on the ‘the average flow rate’ as follows:
• more than 16L/min. or failing the performance requirement are nominated 0 star
• more than 12L/min. but not more than 16L/min. are nominated 1 star
• more than 9L/min. but not more than 12L/min. are nominated 2 star
• more than 7.5L/min. but not more than 9L/min. are nominated 3 star
• more than 6L/min. but not more than 7.5L/min. are nominated 4 star
• more than 4.5L/min. but not more than 6L/min. are nominated 5 star
• less than 4L/min. are nominated 6 star
Dedece products with WELS accreditation
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