Rainwater Harvesting lately has gained recognition as a sustainable means of domestic water supply globally. Malaysia as a country which received a very high rainfall throughout the year is not fully capitalized on this. Even though, traditionally is was done in remote area since long time ago using a primitive way of collecting rainwater from the roof or surface before it touch the ground and stored for domestic usage. The resurgence of rainwater harvesting is due to the paradigm shift in concept of resources and supply and supply water as demand increased due to the increase of the world population. The Malaysian Government has recognized that rainwater harvesting contribute toward National Water Conservation Policy. It has made a commitment to revise the Guidelines for Installing a Rainwater Collection and Utilization System in the Ninth Malaysian Plan within a period of 2006 - 2010. Encouragement from the government through various means of awareness program and incentive has increased the number of rainwater harvesting system in various building types. This paper will cover the potential development of rainwater harvesting which has been implemented in Malaysia. It will also explain the process of the Malaysian Government to encourage on the rainwater harvesting system.
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