Sectoral Water Efficiency Benchmark
PUB develops sectoral water efficiency benchmarks to help industry raise their water efficiency performance.
The WEI serves as a performance indicator for water efficiency, and it refers to the amount of water used per business activity indicator*.
WEI = Total amount of water consumed / business activity indicator
*Business activity indicator – A measure of business activity that takes into account the business operations of the water user.
|Oﬃce Buildings (with Water-Cooled Cooling Tower)||1.0 m3 / m2 / year|
|Retail||1.3 m3 / m2 / year|
|2.5 L / p / d|
|4-star Hotels (with Water-Cooled Cooling Tower)||0.35 m3 / Guestnight|
|5-star Hotels (with Water-Cooled Cooling Tower)||0.62 m3 / Guestnight|
|Primary Schools||10.6 L / p / d|
|Secondary Schools||12.8 L / p / d|
|Junior Colleges||11.5 L / p / d|
|Data Centres||2.4 m3 / MWh|
|Commercial Laundries||13.5 m3 / tonne|
|Average Recycling Rates|
|Wafer Fabrication Plants||43%|
|Semiconductors (excluding Wafer Fabrication Plants)||27%|
Disclaimer: The ﬁgures indicated in the table may exclude tenants’ usage.
Download the 2021 Sectoral Water Efficiency Benchmarks.