The ticks that can be seen in many of our products are actually known as WELS Label. WELS is a grading system that comes with either 0/1/2 or 3 ticks; this is to show the water efficiency level of a product. This rating is under the PUB (Singapore's national water agency) Water Efficiency Labelling and Standard scheme.
Taps and mixers, dual-flush low capacity flushing cisterns (LCFCs), urinal flush valves and waterless urinals are labeled under the mandatory WELS. The other products such as showerheads are labeled under the Voluntary WELS.
As stated above, it is a grading system, thus the more ticks a product has, the more water-efficient the product is.
The water efficiency requirements for the products labeled under mandatory WELS and Voluntary WELS are listed below:
|Products/Fittings||Flow Rate/Flush Volume Requirements|
|Under Mandatory WELS||Zero Tick||Good||Very Good||Excellent|
|Shower Taps and Mixers (Pressure Range from 1.5 to 5.0 bars)||> 9 litres/min||> 7 to 9 litres/min||> 5 to 7 litres/min||5 litres/min or less|
|Basin Taps & Mixers (Pressure Range from 1.5 to 5.0 bars)||> 6 litres/min||> 4 to 6 litres/min||> 2 to 4 litres/min||2 litres/min or less|
|Sink/Bib Taps & Mixers (Pressure Range from 1.5 to 5.0 bars)||> 8 litres/min||> 6 to 8 litres/min||> 4 to 6 litres/min||4 litres/min or less|
|Flushing Cisterns (Per Flush)||NIL||> 4 to 4.5 litres (full flush) & > 2.5 to 3 litres (reduced flush)||> 3.5 - 4.0 litres (full Flush) & > 2.5 to 3 litres (reduced flush)||3.5 litres or less(++) (full flush) &2.5 litres or less (reduced flush)|
|Urinals & Urinal Flush Valve (Per Flush)||NIL||> 1 to 1.5 litres||> 0.5 to 1 litres||0.5 litres or less(**) or Waterless Urinals|
|Urinals & Urinal Flush Valve (Per Flush)||NIL||> 7 to 9 litres/min||> 5 to 7 litres/min||0.5 litres or less(**) or Waterless Urinals|
(++) / (**) To pass additional tests prescribed by PUB if full flush volume is less than 3.5 litres for Dual Flush Low Capacity Flushing Cisterns and if flush volume is less than 0.5 litres for Urinals & Urinal Flush Valve.