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Water Efficient Building (WEB) (Basic) Certification Programme encourages businesses, industries, schools and buildings to adopt water efficient measures in their premises and processes. 

Certification Programme

WEB (Basic)
By installing water efficient fittings and adopting the WEB recommended flow rates/flush volumes, premises can save about five per cent of their monthly water consumption. 

Water Efficient Flow Rates

Area of Usage Water Efficient Flow Rate / Flush Volume
Basin tap and mixer 2 litres/min (Public / Staff toilets)
4 litres/min (Other areas)
Sink / kitchen tap and mixer 6 litres/min
Shower tap & mixer and showerhead 7 litres/min
Bib tap and mixer 6 litres/min
Urinal 0.5 and 1.0 litre of water per flush for ≤ 300 mm and > 300 mm size urinals respectively
Flushing Cistern
Dual-flush flushing cistern
(For all new developments and existing premises undergoing A&A/renovation works from July 2009)

To apply for the Water Efficient Building (Basic) Certification, please email us at