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United World College


Developer: United World College
Main Con: China Construction Development Co Pte Ltd
Architect: KRIA Design
Date Completed: 2015

About the Project:

The purpose of this project is to harvest rain water and condensate water for toilet flushing. As the height difference from the rain catchment area (the upper roof) to the harvesting tank located at the lower roof is limited, this constraint meant that the system has to be designed to optimize the use of vertical space. The choice of rain filter and the dimensions of the tank are carefully chosen to maximize the collection of water.

It is of utmost importance to ensure the treated water is safe for reuse. Failing to do so could mean students getting sick from contact with contaminated water. Netatech's iHydroGuard UV3000 is engineered to meet the same standards as NSF/ANSI 55 Class A certified UV systems and is validated to achieve a minimum UV dose of 40mJ/cm2 at maximum flow rate and UV transmittance as low as 50%. This means that the treated water is free of bacteria and is safe for reuse.

This system is also integrated with the client's building management system for remote monitoring. This eliminates the need to routinely check on the system, saving the time of facility managers.

Having designed and engineered this solution, Netatech is pleased to make the reuse of rain water and condensate water a reality at UWC. The client is able to strengthen their position as a school that is mindful of sustainability by seeking ways to optimize the use of natural resources.

Project Reference


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  • HDB Matilda Edge (PWC36)

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  • HDB Waterway Brooks (PEC40)

    Developer: Housing Development Board

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  • HDB Waterway Ridges (PEC39)

    Developer: Housing Development Board

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  • HDB Waterway Woodcress (PEC38)

    Developer: Housing Development Board

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  • HDB Waterway Sundew (PEC36)

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    Start Year: 2013

  • HDB Waterway Cascadia (PWC31)

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  • United World College, Dover

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  • Hwa Chong Institute

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  • HDB Matilda Court (PWC40)

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  • JTC Chemical Hub

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    Start Year: 2016