Air Selangor has temporarily shut down four water treatment plants in the state due to odour pollution at Sungai Kundang and Sungai Sembah, causing unscheduled water supply disruption in several locations.

The affected areas are the Petaling, Klang, Shah Alam, Gombak, Kuala Lumpur, Hulu Selangor and Kuala Selangor regions, it said in a statement on Facebook.