Several water dams in the northern parts of Malaysia are showing a downward trend and have reached alert levels, said the National Water Services Commission (Span).

It said that there are five dams in Perlis namely Timah Tasoh Dam, one in Penang namely Air Hitam Dam, and three in Kedah namely Muda, BS Padang Saga and Empangan Malut.

"At present, the water supply...