Residents in parts of the Petaling, Klang and Shah Alam districts began to experience scheduled water disruption on Tuesday as Air Selangor contractors work on relocating and replacing worn-out water pipes.br br Selangor Mentri Besar Datuk Seri Amirudin Shari said the water level at most of the state's dams is over 90 in view of the second phase of the northeast monsoon season.