Green campus initiative: Introducing RWH system in Kolej Perindu 3 UiTM Malaysia

Malaysia is blessed with abundant rainfall estimated about 3000 mm per year. However, we are facing with the challenge to manage and explore its potential to serve our needs and to solve our water supply problems. Even though the government has already put some plans to overcome water shortage in the country which include the rainwater harvesting system (RWHS), its implementation is still below expectation mainly due to the low level of awareness among the people. In a campus environment, this option can be adopted as part of the green campus initiatives. In this paper, Kolej Perindu 3, one of the male residential colleges in Universiti Teknologi MARA (UiTM) Malaysia is selected as a case study in order to determine the reliability of rainwater harvesting system installation. The study shows that up to 90% reliability can be achieved based on the available rainfall data and the roof catchment area of the college. In terms of saving, it is estimated that about RM10460 can be saved annually form the water bill.