Background
The Ministry of Environment operates an automated effluent monitoring program that records volumetric discharge and key water-quality parameters from industrial wastewater outfalls. As of 18 June 2026, ministry data recorded 59 companies fitted with automated liquid-effluent monitoring devices and a combined daily cleaned effluent volume of 71,395 cubic metres.
The ministry’s monitoring initiative captures parameters commonly used in regulatory oversight, including pH, chemical oxygen demand (COD) and total suspended solids (TSS), alongside flow volume to characterise treated wastewater from industrial dischargers.
Scope of Application
The reported monitoring applies to industrial facilities that have been equipped with automated liquid-effluent sensors and connected data-management systems under Ministry of Environment activities. The scope as reported covers the operational status of the monitoring equipment and aggregated daily volumes from those installations.
Key Provisions or Decisions
Ministry counts and status categories reported on 18 June 2026 are as follows: automated monitoring devices had been installed at 59 companies; the installations collectively recorded 71,395 cubic metres of treated effluent on a daily basis as captured by the devices and data-management systems. Facility status was summarised using a colour-coded classification with distinct counts: 45 companies were listed as green (meeting the applicable standard), 3 companies were listed as yellow (under monitoring), 2 companies were listed as red (subject to inspection), and 9 companies were listed as white (monitoring systems under repair).
The ministry’s public post also included parameter definitions used in monitoring reports: pH (potential hydrogen), COD (chemical oxygen demand) and TSS (total suspended solids).
Implications for Investors, Businesses, or Compliance
Companies operating water-intensive processes can use automated monitoring data to document treated discharge volumes and quality parameters for environmental compliance reporting. Facilities whose equipment is recorded as under repair or not operational will lack automated measurement data until repairs are completed, as indicated in the ministry’s status classifications.
Official Source
Source: Ministry of Environment Facebook post, 18 June 2026 — https://www.facebook.com/MinistryOfEnvironmentCambodia/posts/pfbid0qqiPyFxVHyUXXM5d3Bz87AMJHY4BvZay4vZShrJuH1Xo5U6PDNJTNwZV97o4Gf35l
