Background
The Ministry of Environment operates a national industrial effluent monitoring programme that deploys automatic online monitoring equipment at industrial facilities to record wastewater discharges and key water-quality parameters.
The programme classifies monitored facilities into compliance bands—green, yellow, red, and white—based on measured parameters such as pH, chemical oxygen demand (COD), and total suspended solids (TSS).
Scope of Application
On 9 July 2026 the ministry reported that automatic monitoring equipment had been installed at 64 companies. The installed systems recorded a total daily volume of treated liquid wastewater of 71,395 m3 from the equipped facilities.
Reported compliance band counts for the monitored sites were: 57 companies in green (compliant), 2 companies in yellow (under observation), 0 companies in red (requiring escalated inspection), and 10 companies in white (systems under repair or maintenance).
Key Provisions or Decisions
The ministry’s deployment emphasizes continuous online measurement of effluent parameters commonly cited in national effluent standards, including pH, COD, and TSS. The ministry uses a colour-coded banding system to summarise facility status for operational oversight and public reporting.
Implications for Investors, Businesses, or Compliance
Facilities equipped with continuous monitors generate time-stamped discharge data that can inform permit compliance assessments and routine environmental management. Operators that register in the green band meet the monitored parameters at the time of reporting; yellow indicates parameters that require follow-up monitoring; white denotes equipment maintenance or temporary data gaps.
Official Source
Source: Ministry of Environment Facebook post dated 9 July 2026. Original post URL: https://www.facebook.com/MinistryOfEnvironmentCambodia/posts/pfbid0L5txXj21CZJWb3J4CNSGhYUM5Mxw3TGSoH255nKxqVZXuNNiXxSctg3fdoo67ZvMl
