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 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:
| Fittings | Flow rates/ Volume of discharge | |
|---|---|---|
| Water efficiency rating | 2-tick |
3-tick |
| Shower Taps & Mixers (L/min) | > 5 to 7 | 5 or less |
| % water savings* | 25% | 38% |
| Basin Taps & Mixers (L/min) | > 2 to 4 | 2 or less |
| % water savings* | 40% | 60% |
| Sink/Bib Taps & Mixers (L/min) | > 4 to 6 | 4 or less |
| % water savings* | 29% | 43% |
| Dual-flush flushing Cisterns (L/flush) | > 3.5 to 4.0 (full flush) > 2.5 to 3.0 (reduced flush) |
3.5 or less (full flush) 2.5 or less (reduced flush) |
| % water savings* | 12% | 18% |
| Urinal Flush Valve & Waterless Urinals (L/flush) | > 0.5 to 1 | 0.5 or less or waterless urinals |
| % water savings* | 40% | 60% |
| Water closet flush valves (L/flush) | >3.5 to 4.0 | 3.5 or less |
| % water savings* | 11% | 22% |
Any innovative design of tap or mixer (i.e. basin, sink/bib and shower) which meet specific purposes is to be reviewed and cleared by PUB with specific conditions applied on a case-by-case basis.