How did authorities identify the source of the pollution?

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Authorities Identified Pollution Source Through Joint Inspection and Investigation of Illegal Waste Disposal

Authorities identified the source of pollution affecting the Sungai Semenyih Water Treatment Plant through a joint inspection at the Bandar Putera Mahkota Sewage Water Treatment Plant. This inspection revealed that the odour was not from sewage treatment operations but from illegal waste disposal with solvent odours located near the plant, prompting further investigation by personnel from the National Water Service Commission (SPAN), Lembaga Urus Air Selangor (LUAS), and Indah Water Consortium Sdn Bhd (IWK).
Joint Inspection Pinpointed Non-Sewage Odour Source

A joint inspection involving LUAS and SPAN was conducted at the Bandar Putera Mahkota Sewage Water Treatment Plant following a report received on the morning of the incident. During this inspection, it was determined that the prevailing odour was not originating from the sewage entering the plant. This led to a temporary halt in effluent discharge to facilitate immediate cleanup operations.
Illegal Waste Disposal Identified as Cause

Further investigation by SPAN, LUAS, and IWK personnel involved inspecting sewers around the affected area. This revealed the presence of illegal waste disposal activities characterized by solvent odours. This discovery indicated that the pollution stemmed from irresponsible parties disposing of waste near the treatment plant, a situation noted as being similar to an incident in September.
IWK Lodged Police Report to Trace Perpetrators

Indah Water Consortium Sdn Bhd (IWK) lodged a police report to initiate efforts in tracking down the individuals responsible for the illegal waste disposal. The company expressed dismay at being unfairly blamed for the incident, emphasizing that its sewage treatment plants are designed to handle sewage and cannot treat such illegal waste. IWK reiterated its commitment to ensuring all its plants operate and are maintained according to prescribed specifications and procedures.

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How did authorities identify the source of the pollution?

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