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September 8, 2026

Cambodia Wastewater Monitoring Infrastructure: Automated Effluent Monitoring and Compliance Data

Background

As of 8 September 2026, automated monitoring equipment had been installed at 64 companies for liquid-waste discharge monitoring. The monitoring systems reported a daily treated liquid-waste volume of 71,395 cubic metres. These installations form part of a data-management approach that records key effluent parameters such as pH, chemical oxygen demand (COD), and total suspended solids (TSS) at industrial discharge points.

The Ministry of Environment published a colour-coded status summary for monitored dischargers that uses green for compliant facilities, yellow for sites under monitoring, red for sites subject to inspection, and white for sites undergoing repair. The post also included short parameter notes defining pH, COD, and TSS as the operational metrics used in daily monitoring summaries.

Key Developments

  • Installation count reported: 64 companies equipped with automated liquid-waste monitoring and data-management devices (reported 8 Sep 2026).
  • Daily treated volume reported from the automated systems: 71,395 cubic metres.
  • Colour-code totals reported in the same update: 62 companies listed as green (compliant), 1 company listed as yellow (under monitoring), 0 companies listed as red (subject to inspection), and 9 companies listed as white (under repair).

Institutional Role

The Ministry of Environment posted the monitoring results and the aggregated compliance status on its official channel. The published notes indicate the monitoring programme records pH, COD and TSS as primary effluent parameters used for daily operational summaries and compliance classification.

Compliance Implications

Automated, on-site effluent monitoring and centralised data management provide time-stamped measurements that support ongoing assessment of industrial discharge quality. The Ministry’s colour-coded classification supplies a concise operational snapshot for regulators and stakeholders, with each colour corresponding to a specific administrative status: compliant, under monitoring, subject to inspection, or under repair.

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