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HDB Punggol Waterway Banks (East C41)


Developer: Housing Development Board
Main Con: Sunhuan Construction Pte Ltd
Architect: ADDP Architects LLP
Date Completed: 2015

About the Project:

In Singapore we have 2.4 to 2.6 meter of rain every year. On average we have more than 40% raining days throughout the year. Rain water is generally quite clean and a good source for reuse, such as for amenity washing, toilet flushing, irrigation etc.

As part of the sustainable and green directives in Singapore, Housing Development Board (HDB) has decided to use Rain Water for amenity washing. We harvest 10m3 of rain water at the roof top on each block of apartment, disinfect the water with non-chemical water treatment technologies and then use the treated water for cleaning staircases, void decks and the balance, for irrigation.

All control and monitoring is done via Internet and preventive maintenance is also alerted by mobile technology or email.

This decentralized Rain Water Harvesting (RWH) and water treatment system reduces potable water usage, achieving low carbon footprint, lower up-stream water treatment energy cost and chemical usage.

Project Reference


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  • HDB Matilda Edge (PWC36)

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    Developer: Housing Development Board

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