SHAH ALAM, April 10 — The Selangor Water Management Authority (Luas) has managed to avoid disruption to the state’s water supply on the eve of Hari Raya Aidilfitri yesterday after traces of diesel oil were discovered near the Cheras Batu 11 water treatment plant (WTP) in Hulu Langat.
State executive councillor for public health and environment Jamaliah Jamaluddin said the pollution was found near the WTP’s water intake.
“Luas immediately proceeded to the location for assessment, and its investigation indicated that the source originated from nearby industrial areas based on odour detection up to two Threshold Odour Numbers (TON) in a culvert before entering Sungai Langat,” she said in a statement today.
Luas promptly took preventive measures by placing 12 oil pads and two bags (50kg each) of activated carbon in the culvert to remove odour, as well as trap and prevent the flow of oil residue into Sungai Langat.
“It also conducted intensive monitoring of odour and oil residue in Sungai Langat at intervals of every 30 minutes. The distance between the location and the Cheras Batu 11 WTP is approximately 400 metres.
“Luas’ investigation upstream did not find any suspected potential causes of the oil residue release.
“Further observation at the site revealed traces of diesel washing in front of a vacant premise in the industrial area, which was suspected of vehicle washing activities and diesel release into the culvert,” she said.
Following this, Luas appointed a contractor to carry out cleaning and oil residue suction works in the affected area, which was fully completed by 9.40pm yesterday.
“Its verification at the site confirmed an odour reading of 0 TONs, and no further oil residue was found. This immediate mitigation action successfully ensured no disruption to the water supply for consumers.
“The state government and LUAS urge everyone to be vigilant against irresponsible activities and actions which can contribute to the pollution of the state’s water resources, especially during this festive season,” Jamaliah said.
The councillor also reminded the public to ensure that any cleaning and maintenance activities for premises, machinery, and heavy vehicles during the holiday period are conducted under controlled conditions to prevent any risk of contaminated flow into any drains and, ultimately, into rivers.
“Such activities could lead to plant shutdowns and water supply disruptions. Report any suspicious activities to Luas for immediate action.
“The state government and Luas will not compromise with any party that pollutes water sources, and strict action will be taken in accordance with the provisions of the Luas 1999 Enactment,” she said.
