The Ingenieur Vol 57 January-March 2014 The Ingenieur Vol 57 January-March 2014 | Page 54

INGENIEUR drop of the water levels of the Pedu and Muda dams dropping to critical levels, resulting in cancellation of the off-season rice crop. In 1998, an El Nino related drought also caused severe water stress in Kedah and Penang, and caused severe water rationing in Kuala Lumpur and Petaling Jaya for many months. In 2002, drought destroyed thousands of hectares of paddy in Perlis and many areas also suffered water stress. The recent flooding in Pahang has almost paralysed the town centre and surrounding areas when there is no electricity and water supply in most parts while the flooding in the state, Johor, Terengganu and Kelantan has seen over 37,127 people evacuated. be the main challenge for water operators in Malaysia. • Rapid Urbanisation. The availability of raw water in Malaysia is generally not an issue as majority of the potable water is tapped from rivers which are fed by abundant annual rainfall. However, problems arise because rainfall is not uniformly distributed over the year temporally and spatially, base flow is being reduced due to rapid urbanisation, supply does not meet demand in major cities, weak distribution systems and water becoming polluted and rendered less suitable for the intakes when passing through the urban centres. It is vital that as cities develop, infrastructural facilities for water management should be kept at par with other facilities so that city dwellers need not be worried about water shortages, poor quality and supply interruptions since direct access to sources for them is almost unthinkable. However city dwellers are responsible for ensuring that effluent discharged from city waste water treatment and other discharges are of “premium” effluent standard. • Climate Change. Droughts occurred in 1977 and 1978, devastating the paddy crop in most of the irrigation areas in Northwest Peninsular Malaysia. In 1982 and 1991, drought resulted in