KUALA LUMPUR: The Sungai Semenyih Water Treatment Plant (WTP) resumed operations this morning.
Pengurusan Air Selangor Sdn Bhd (Air Selangor) said a reading of 0 threshold odour number (TON) in Sungai Semenyih WTP was recorded three times in a row enabling it to resume operations.
"The operational resumption involves cleaning and water treatment processes which are estimated to be completed in 12 hours.
"Following this, clean and safe treated water will then be distributed in stages to consumers in the affected areas," it said in a statement.
A total of 472 areas in five regions managed by Air Selangor experienced unscheduled water supply disruptions beginning at 7 am Saturday following the temporary closure of two WTPs.
They involve 172 areas around Petaling, Hulu Langat (54 areas), Sepang (196), Putrajaya (23) and Kuala Langat (27).
Air Selangor adds that 85 water tankers had been mobilised to the affected areas to provide water supply assistance to affected users following an odour pollution incident detected at the Jenderam Hilir Raw Water Pump Station involving the Sungai Semenyih and Bukit Tampoi WTPs.
It adds priority was given to critical premises such as hospitals, clinics, dialysis centres and funeral ceremonies throughout unscheduled water supply disruption period.