Water Challenge
Water Challenge
Eco-Pure - Water Open Call
The inefficiency of centralised water systems and high costs of building such system in rural communities deter communities from accessing clean and affordable water supply. The Eco-Pure Water Design Challenge aims to address this situation and design a water systems that is affordable, self-sustaining, compact and promotes community living. Students, graduates and professionals are welcoome to submit their innovative solutions through this Open Call.
Challenge
The water design should consider the local context and growth from unit to community-scale specific to the Southeast Asian Climate. The system should be able to operate independently without the connection to the main water supply system. Create your own scalable, self-sustaining, modular Eco-Pure which focuses on human-centric design supported by technology. The requierments of the solutions are listed below.
Rewards
The chosen concept will be built
at Jurong Innovation District
(JID) in Singapore.
Eligibility
with proof of concept
Target
Deployment
December 2020
June 2021
December 2021

Drinking Water
- Registration
- Application
- Evaluation
- Testbedding
Registration
Application
Evaluation
Tesbedding
Requirements
- The Water Designs should be for Portable and Non-Portable uses
- Overall, the integrated system needs to meet at least 70 litres of water consumption per day per person, with the design meeting the water consumption needs of at least 3-5 people
- Portable Water (Eg. Atmospheric water generator)
- Need to supply at least 100 litres of drinkable water per day
- The solution should operate optimally indoors (air-conditioned) and outdoors
- Minimum requirement of 45% relative humidity for water generation system needs to be met
- Water quality produced needs to meet the PUB Portable Water Quality Standard
- Cost effective and compact in size
- Low maintenance and associated costs required
Submission
- Submit to project-shea@ntu.edu.sg
- Submission Must Include:
- System drawings and overall layout of the system
- Technical specifications and compliance with relevant Singapore standards
- Costing of the systems (Cost-benefit analysis and savings/reduction in energy/water usage)
- Implementation plan and timeline
- Key advantages/ Value Proposition of system

Rain Water
- Registration
- Application
- Evaluation
- Testbedding
Registration
Application
Evaluation
Tesbedding
Requirements
- The Water Designs should be for Portable and Non-Portable uses
- Overall, the integrated system needs to meet at least 70 litres of water consumption per day per person, with the design meeting the water consumption needs of at least 3-5 people
- Water Sourcing System (Eg. Rainwater Harvesting System)
- Small and compact to fit to the 20sqm roof area
- Cost effective, short assembly and disassembly time
- Low maintenance requirement and fee
- For rainwater system, the system needs to meet with PUB standards for rainwater harvesting system
- Rainwater tank size must be at least 60 cubic meter
Submission
- Submit to project-shea@ntu.edu.sg
- Submission Must Include:
- System drawings and overall layout of the system
- Technical specifications and compliance with relevant Singapore standards
- Costing of the systems (Cost-benefit analysis and savings/reduction in energy/water usage)
- Implementation plan and timeline
- Key advantages/ Value Proposition of system

Grey Water
- Registration
- Application
- Evaluation
- Testbedding
Registration
Application
Evaluation
Tesbedding
Requirements
- The Water Designs should be for Portable and Non-Portable uses
- Overall, the integrated system needs to meet at least 70 litres of water consumption per day per person, with the design meeting the water consumption needs of at least 3-5 people
- Greywater Recycling System
- Could handle at least 25 liters of greywater per day per person
- Achieve at least 70%-80% greywater recycling (Reducing potable water uses)
- Treated greywater needs to meet with the Singapore PUB and WHO standards for greywater quality
- The system should include the basics treatment systems
- Sedimentation / Screening – Biological and chemical treatment
- Membrane bioreactor and filtration – Disinfaction using UV/chlorine
- Cost effective, short assembly and disassembly time
- Low maintenance requirement and fee
- Discharge of effluent to meet with PUB Trade Effluent Standards
-
Two suggested systems which include greywater/black water recycling and water sourcing system for non-potable uses
(Examples include rainwater harvesting system) - Both systems need to be integrated to increase the circularity of grey water for non-potable uses
Submission
- Submit to project-shea@ntu.edu.sg
- Submission Must Include:
- System drawings and overall layout of the system
- Technical specifications and compliance with relevant Singapore standards
- Costing of the systems (Cost-benefit analysis and savings/reduction in energy/water usage)
- Implementation plan and timeline
- Key advantages/ Value Proposition of system

Black Water
- Registration
- Application
- Evaluation
- Testbedding
Registration
Application
Evaluation
Tesbedding
Requirements
- The Water Designs should be for Portable and Non-Portable uses
- Overall, the integrated system needs to meet at least 70 litres of water consumption per day per person, with the design meeting the water consumption needs of at least 3-5 people
- Non-potable water
-
Two suggested systems which include greywater/black water recycling and water sourcing system for non-potable uses
(Examples include rainwater harvesting system) - Both systems need to be integrated to increase the circularity of grey water for non-portable uses
Submission
- Submit to project-shea@ntu.edu.sg
- Submission Must Include:
- System drawings and overall layout of the system
- Technical specifications and compliance with relevant Singapore standards
- Costing of the systems (Cost-benefit analysis and savings/reduction in energy/water usage)
- Implementation plan and timeline
- Key advantages/ Value Proposition of system