PETALING JAYA: A thick layer of black oil that was found at the entry point of the sewage treatment plant in Batang Kali was quickly cleaned up after it was detected, says Indah Water Konsortium Sdn Bhd (IWK).
"The oil cleaning work was completed at 5pm on Saturday (July 20) and the sewage treatment plant has returned to normal operations. (Also) the discharge of effluent is according to standards by the Department of Environment," it said in a statement on Sunday (July 22).
