Was foreign effluent the cause of Klang Valley water disruption?

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Foreign Effluent Not the Cause of Klang Valley Water Disruption

The foreign effluent discovered at the Taman Velox sewage treatment plant was not the source of the pollution that led to the closure of four water treatment plants and subsequent water disruption in the Klang Valley. The National Water Services Commission (SPAN) has stated that it took immediate action upon learning of the foreign effluent.
SPAN's Swift Response to Effluent Discovery

On November 4, the discovery of foreign effluent at the Taman Velox sewage treatment plant was reported. The following day, November 5, SPAN directed Indah Water Konsortium (IWK) to cease operations at the plant and prevent any discharge into Sungai Gong. IWK also conducted investigations at nearby industrial premises, collecting effluent waste from two companies for sampling on the same day. Furthermore, IWK notified the local authority and Selangor’s Department of Environment (JAS) of the pollution on November 4 and filed a police report on November 5 to facilitate a thorough investigation.
Odour Pollution Triggered Water Treatment Plant Closures

The odour pollution in Sungai Selangor, which ultimately caused the shutdown of four water treatment plants, was detected by the Selangor Water Management Authority (LUAS) enforcement team around 12:20 PM on Tuesday, November 10. This distinct odour pollution, rather than the previously discovered foreign effluent at the sewage treatment plant, was identified as the immediate trigger for the disruption.
Suspected Source Identified and Operations Restored

Following the detection of the odour pollution on November 10, a coordinated effort involving multiple agencies, including SPAN, was mobilised to identify the source. The premises suspected of causing the pollution, located within the small and medium industry area in Taman Velox Rawang, were identified on the same night. This swift identification and subsequent mitigation efforts allowed all four affected water treatment plants to resume operations in less than 15 hours after their suspension.
Widespread Impact on Consumers

The suspension of operations at the Rantau Panjang and Sungai Selangor Phase (SSP) 1, 2, and 3 water treatment plants on November 10 resulted in an unscheduled water supply disruption affecting a significant number of consumers. Pengurusan Air Selangor Sdn Bhd (Air Selangor) reported that 1,139,008 account holders across the Klang Valley were impacted by the outage. The pollutant was believed to have originated from the industrial area in Taman Velox Rawang.

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Was foreign effluent the cause of Klang Valley water disruption?

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