INTRODUCTION
This proposal has been developed in response to the request for proposals for developing solutions for sustainable initiatives beneficial to citizens.
As the population of Singapore increases gradually over time, there will also be an increase in the
demand for water usage in both domestic and non-domestic sector. Public Utilities Board (PUB)
(2018) states that water demand in Singapore is likely to double from 430 million gallons to 860
million gallons a day by 2060. Singapore’s water supply comes from 2 primary sources, mainly the
imported water from Malaysia and NEWater. The water treaty between Singapore and Malaysia is
currently ongoing and it will expire in 43 years time. If Malaysia does not renew the water treaty,
Singapore will have to rely on NEWater for domestic and non-domestic usage. According to PUB,
the five NEWater plants are supplying up to 40% of Singapore’s current needs and will ultimately
hit up to 55% by 2060. As a result, there will be a shortage of water in Singapore by 2061.
Currently, public male restrooms in Brussels Airport uses waterless urinals to conserve water.
Throughout a year, these waterless urinals can save up to an estimated 30,000 cubic meters of
water per year, which equates to 30,000,000 litres of water. According to PUB, each Singaporean
uses an average of 143 litres per day. This water savings can provide 114 families of 5 with
potable water per day in Singapore. Implementing waterless urinals will reduce the overall water
usage of airports. This will help alleviate the water security issue prevailing in Singapore by 2060.
As the population of Singapore increases gradually over time, there will also be an increase in the
demand for water usage in both domestic and non-domestic sector. Public Utilities Board (PUB)
(2018) states that water demand in Singapore is likely to double from 430 million gallons to 860
million gallons a day by 2060. Singapore’s water supply comes from 2 primary sources, mainly the
imported water from Malaysia and NEWater. The water treaty between Singapore and Malaysia is
currently ongoing and it will expire in 43 years time. If Malaysia does not renew the water treaty,
Singapore will have to rely on NEWater for domestic and non-domestic usage. According to PUB,
the five NEWater plants are supplying up to 40% of Singapore’s current needs and will ultimately
hit up to 55% by 2060. As a result, there will be a shortage of water in Singapore by 2061.
Currently, public male restrooms in Brussels Airport uses waterless urinals to conserve water.
Throughout a year, these waterless urinals can save up to an estimated 30,000 cubic meters of
water per year, which equates to 30,000,000 litres of water. According to PUB, each Singaporean
uses an average of 143 litres per day. This water savings can provide 114 families of 5 with
potable water per day in Singapore. Implementing waterless urinals will reduce the overall water
usage of airports. This will help alleviate the water security issue prevailing in Singapore by 2060.
Figure 1.1. Survey on water usage in toilets.
A survey was conducted with 57 Singaporean males to find out how often they use the urinals a
day. The survey results from figure 1.1 show that more than 50% of Singaporeans males use the
urinal five times or more a day, which means that they use more than five litres of water a day
mainly on urinals.
day. The survey results from figure 1.1 show that more than 50% of Singaporeans males use the
urinal five times or more a day, which means that they use more than five litres of water a day
mainly on urinals.
Problem statement
An ideal sustainable airport should implement zero-flush urinals throughout the airport to
eliminate the water usage of urinals. However, Changi airport is currently using low flush urinals a
nd has yet to implement such water-efficient technology. In an effort to be water efficient, the
installation of zero-flush urinals can significantly help to reduce water usage in Changi Airport.
eliminate the water usage of urinals. However, Changi airport is currently using low flush urinals a
nd has yet to implement such water-efficient technology. In an effort to be water efficient, the
installation of zero-flush urinals can significantly help to reduce water usage in Changi Airport.
Purpose statement
The purpose of the proposal is to convince the Changi Airport Group (CAG) facility management
team to implement zero-flush urinals in the toilets of Changi Airport to reduce water
consumption.
team to implement zero-flush urinals in the toilets of Changi Airport to reduce water
consumption.
References
https://www.businesstimes.com.sg/government-economy/singapore-ranks-top-in-sustainability-
among-asian-cities-second-globally
among-asian-cities-second-globally
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