Chen Jia Xuan Helen (FOS), Lee Chia Rei (FOE), Matsutake Teppei (FOE), Tan Zi Bin (FOE), Wong Wen Wei Esmanda (SOC)
Academic Advisor: Ms. Sadaf Ansari
Increasingly, countries around the world are experiencing water stress (UNDP, 2019). Despite this, the average Singaporean uses 50% more water than in most developed cities (Biswas, 2017). Our project focused on the water wasted at RVRC push-taps – we measured that push-taps in the old block toilets have a flow time of 6 seconds, compared to the PUB recommendation of 3 seconds, causing an estimated waste of 5500 litres water in Blocks A and B. We tried to reduce the flow time by placing zip-ties at the circumference of the push-taps, limiting the taps’ depression. We measured the amount of water wasted at two toilets for one week without zip-ties and three weeks with zip-ties, and compared the data. Our findings indicate a saving of 2.7 litres of water per tap, proving the efficacy of the zip-ties in reducing water wastage. We have contacted NUS OES to consider this implementation for other locations on campus.