Demand now at 2500 mld is about 10 times what it was 30 years ago. It has grown at a compounded rate of about 8 - 9 %. According to demographers, population growth in Malaysia is likely to stabilise at about 70 million or about 3 times present population sometime between 2050 to 2100.
Selangor and the Federal Territory are in the centre of trade and commerce in Malaysia. We can expect this growth and hence water demand to be at least 4 or 5 times more. Assuming it is 4 times more, we are looking at a demand of about 10,000 mld. In the medium term, it is projected to double to 5,000 mld by 2010 at an average of about 6% growth rate.