Lembaga Urus Air Selangor says about 100kg of activated carbon was deployed for deodorisation, alongside intensified odour monitoring.
State public health and environment committee chairman Jamaliah Jamaluddin said a Lembaga Urus Air Selangor (Luas) inspection on Sunday detected an abnormal odour in the river due to pollution believed to have originated from the factory’s discharge.
Further inspections found coloured effluent suspected to have been discharged into the drainage system before entering Sungai Kabul. The premises was also found to have breached licensing conditions under Selangor’s Zero Discharge Policy.
Luas said the pollution posed a risk to nearby water treatment plants, particularly the Sungai Semenyih and Bukit Tampoi WTPs, prompting immediate mitigation measures.
About 100kg of activated carbon was deployed for deodorisation, alongside intensified odour monitoring in Sungai Kabul and Sungai Semenyih, said Luas in a statement.
The premises was ordered to stop all discharge activities and carry out immediate cleaning and corrective measures.
As part of mitigation efforts, water was pumped from Pond B and Pond C under the Selangor Raw Water Guarantee Scheme (SJAM), supplying up to 770 million litres per day to the Sungai Semenyih WTP to ensure uninterrupted operations.
Samples taken from the site have been sent to the chemistry department for analysis.
Luas has also opened an investigation under Section 79(4) of the Luas Enactment 1999 for water pollution, and Section 59 for breach of licence conditions.
Jamaliah said monitoring at 8pm yesterday showed no abnormal odour in Sungai Semenyih and Sungai Kabul, with river conditions returning to normal.
SJAM’s operations have ceased, and the Sungai Semenyih WTP has resumed normal operations using river water. - FMT
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