PETALING JAYA: Water contamination has been detected in Sungai Selangor again causing unscheduled water cuts to 1,139,008 accounts across the state.
Pengurusan Air Selangor Sdn Bhd (Air Selangor) said it had to issue a stop-work order on its Phase 1,2, 3 and Rantau Panjang water treatment plants after the pollution was detected.
The water contamination at Sungai Selangor was detected at 12.45pm on Tuesday (Nov 10), it said in a statement on Tuesday (Nov 10).
“The stop-work order is expected to affect water supplies involving 1,139,008 accounts covering 1,279 areas in Kuala Lumpur, Petaling, Klang, Shah Alam, Kuala Selangor, Hulu Selangor, Gombak and Kuala Langat, ” it said.
Air Selangor said that water supply to the areas mentioned would be shut down at 6pm.
As of 2.30pm, the threshold odour number (TON) was recorded at eight TON at Rantau Panjang water treatment plant and four TON at Phase 1,2, 3 at the Sungai Selangor water treatment plant.
It added that efforts to flush contaminants in Sungai Selangor would be done by releasing 300 million litres of water a day from the Sungai Selangor dam and 500 million litres a day at the Sungai Tinggi dam.
“Aside from that, the Selangor Water Management Authority (LUAS) has also released 192 million litres of raw water from the KL Larut pond for the same reason, ” it said.
LUAS earlier Tuesday (Nov 10) said the source of the pollution might be solvents that were found in Sungai Selangor, causing operations at the water treatment plans in Rantau Panjang, and Sungai Selangor’s Phase 1,2, and 3 to be stopped from 12.20pm to 12.45pm.
LUAS, Syarikat Bekalan Air Selangor Sdn Bhd (Syabas), and other relevant authorities had started investigations while mitigation plans were executed, LUAS said on Twitter.
For a full list of affected areas, click here.