Background
The Ministry of Environment reported that, as of 21 September 2026, 64 companies had been equipped with automated liquid-effluent monitoring devices to record discharge parameters.
Those automated systems recorded a combined daily treated effluent volume of 71,395 cubic meters on the same date. Monitored parameters referenced by the ministry include pH, chemical oxygen demand (COD), and total suspended solids (TSS), which are used to evaluate industrial discharge against national effluent standards.
Scope of Application
The ministry’s monitoring covers industrial facilities that discharge liquid waste into public waterways or sewer systems and that have been fitted with automated monitoring equipment under the ministry’s reporting framework.
Key Provisions or Decisions
The Ministry published a status classification for monitored facilities using a color-coded system. The reported status distribution on 21 September 2026 was:
- 56 companies classified as compliant with discharge standards (green).
- 5 companies listed as under monitoring (yellow).
- 1 company listed as under inspection (red).
- 10 companies listed as under repair (white).
Implications for Investors, Businesses, or Compliance
Industrial operators in Cambodia that discharge liquid effluent should ensure monitoring equipment and data management meet ministry requirements to appear in the ministry’s operational status reports. Status categories published by the ministry provide an observable compliance baseline that businesses and auditors can reference when assessing operational adherence to national effluent standards.
Official Source
Source: Ministry of Environment social media update, 21 September 2026: Ministry of Environment Facebook post.
