How did forensic teams collect and compare water samples from river and WTP?

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Forensic Teams Collected and Compared Water Samples Following Sungai Semenyih Pollution

Forensic teams meticulously collected multiple water samples from the affected river and the Water Treatment Plant (WTP), alongside samples from the suspected factory premises, to investigate the pollution incident. These collected samples were then sent to the Chemistry department for detailed analysis and comparison. A crucial step in the investigation involved a comparative sample taken by the complainant, Air Selangor, which was also provided to the investigating officer for direct matching with the other samples.
Collection of River and WTP Water Samples

The Selangor Police Contingent Headquarters (IPK) forensic team conducted an on-site investigation at the pollution site. During this investigation, five distinct water samples were systematically gathered. These samples were drawn from the Sungai Semenyih river itself, as well as from the Sungai Semenyih Water Treatment Plant (WTP), to assess the extent and source of the contamination.
Sampling at Suspected Factory Premises

In addition to samples from the water bodies, the forensic team also collected samples from within the premises of the factory identified as the suspected source of the pollution. This measure aimed to identify any specific pollutants or waste products present at the factory that could have contributed to the discharge into the river. The collection of samples from the factory directly supports the investigation into the origin of the effluent.
Comparative Sample for Matching

A significant aspect of the sample collection process was the inclusion of a comparative sample. This sample was independently taken by the complainant, Pengurusan Air Selangor Sdn Bhd (Air Selangor). This pre-existing sample was then handed over to the investigating officer, facilitating a direct comparison with the samples collected by the police. This comparative analysis is essential for confirming the origin and composition of the polluting substance.
Dispatch to Chemistry Department

Following their collection and the inclusion of the comparative sample, all gathered water samples were promptly sent to the Chemistry department. This department is equipped to conduct further analysis, including detailed chemical composition testing. The purpose of sending the samples to the Chemistry department is to perform the necessary tests for matching and to provide a definitive scientific basis for the investigation's findings.

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How did forensic teams collect and compare water samples from river and WTP?

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