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Water Efficient Building Certification


Water Efficient Building (WEB) certification program encourages businesses, industries, schools and buildings to adopt water efficient measures in their premises and processes. It consists of WEB (Basic) and WEB (Gold/ Silver). 

(Click on image for an enlarged view)
WEB Pyramid

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 UsageWater Efficient Flow Rate / Flush Volume
Basin tap and mixer2 litres/min (Public / Staff toilets)
4 litres/min (Other areas)
Sink / kitchen tap and mixer6 litres/min
Shower tap & mixer and showerhead7 litres/min
Bib tap and mixer6 litres/min
Urinal0.5, 1 and 1.5 litres of water per flush for small, medium and large size urinals respectively

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

WEB (Gold/ Silver) – Enhanced in 2017

The WEB (Gold/ Silver) certification is to better recognise water users based on water efficiency performance, adopted water efficiency measures and are exemplary performers in water efficiency. It is a biennial certification.

Water Efficient Building (Silver)Water Efficient Building (Gold)
Water Efficient Building Certification (Basic)
Water Efficiency Performance Silver (Top 25%)Water Efficiency Performance Silver (Top 10%)
Points will be given for sustained water savings for the past 2 years and adoption of water efficiency measures. Some examples are:
  • Installed private water meters to monitor main usage areas
  • Complete and submitted Water Efficiency Management Plan (WEMP)1 to PUB
  • Installed fault reporting system to report leaks, faulty fittings, etc.
  • Monitoring of water consumption: at least daily / weekly / monthly
  • Certified to SS 577:2012 Water Efficiency Management Systems(WEMS)
  • Adoption of Water Efficiency Measures (E.g. 3-ticks WELS fittings, AHU Condensate reuse, Water Recycling etc.)
  • 1 Water Efficiency Management Plan shall be based on the preceding year’s data.

    Past Recipients
    Gold and Silver Recipients 2015 [PDF]
    Gold and Silver Recipients 2014 [PDF]
    Gold and Silver Recipients 2013 [PDF]         


    For applicants applying for WEB (Gold/ Silver) Certification 2017, the application form can be downloaded from here [PDF]. 

    The timeline for application and assessment process for achieving WEB (Gold/ Silver) Certification 2017 is shown in the table below:

    DatesApplication Status
    Mar 2017 – May 2017Open for Application
    Jun 2017 – Jul 2017Evaluation of application
    Aug 2017 – Oct 2017Certificate Presentation Ceremony

    All applicants are required to send a copy of the completed application form, together with all relevant supporting documents to