What caused the pollution incident at the raw water intake?

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Pollution Incident at Raw Water Intake Remains Unspecified

The precise cause of the pollution incident that led to the shutdown of the Sungai Semenyih Water Treatment Plant remains unspecified in the provided information. The incident was detected at the Jenderam Hilir Raw Water Pump Station intake, prompting the temporary cessation of operations at the water treatment facility.
Shutdown and Resumption of Operations

The Sungai Semenyih Water Treatment Plant was shut down at noon on April 30, 2022, due to the detected pollution. Lembaga Urus Air Selangor (LUAS) reported that operations resumed at 4:00 pm on the same day after odour pollution readings returned to zero. The plant then commenced a water flushing process, with the distribution of clean, treated water expected to begin in stages from 12:30 am on May 1, 2022.
Impact on Water Supply

The shutdown affected a significant number of consumers, with 463 areas across five Air Selangor regions experiencing unscheduled water supply disruptions. These areas included 172 in Petaling, 54 in Hulu Langat, 194 in Sepang, 23 in Putrajaya, and 20 in Kuala Langat. Air Selangor mobilised alternative water tanker assistance, prioritising critical premises to mitigate the impact on affected consumers.
Communication and Updates

Air Selangor committed to providing progressive updates on the situation through various channels, including mass media, the Air Selangor application, Facebook, Instagram, and Twitter. Consumers were also advised to contact the Air Selangor Contact Centre at 15300 or submit inquiries and complaints via the Help Centre on www.airselangor.com for further information.

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What caused the pollution incident at the raw water intake?

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