290 areas including Petaling, Klang, Gombak, Kuala Lumpur and Kuala Langat are set to be affected by a scheduled water disruption on July 14 until July 17.br br Pengurusan Air Selangor Sdn Bhd said it is due to repair and improvement works to the Sungai Selangor Phase 3 Water Treatment Plant (SSP3 WTP).