Wastewater Compliance and the Importance of a Discharge Permit

September 02, 2025
By Jeffrey Torres
Wastewater Compliance and the Importance of a Discharge Permit

The Philippine Clean Water Act (RA 9275) was enacted to protect the country's water bodies from pollution. For businesses, a key component of this law is the requirement to secure a Discharge Permit for any wastewater released into the environment, whether it's into a river, a lake, or the sea.

What is a Discharge Permit?

A Discharge Permit is a legal authorization from the DENR-EMB that allows a facility to discharge wastewater, provided that the effluent meets the prescribed quality standards. These standards set limits on various pollutants like Biochemical Oxygen Demand (BOD), Total Suspended Solids (TSS), and heavy metals.

The Role of a Wastewater Treatment Plant (WWTP)

To meet the effluent standards, most facilities must operate a Wastewater Treatment Plant (STP) or Sewage Treatment Plant (STP). The design and operation of this plant are critical. The Discharge Permit application requires detailed information about the WWTP, including its capacity, treatment processes, and an analysis of the treated water quality.

Compliance is Continuous

Obtaining the permit is just the first step. Permittees are required to submit regular Self-Monitoring Reports (SMRs) with updated effluent analysis to prove ongoing compliance. Failure to do so can result in penalties and the revocation of the permit. Expert guidance can help ensure your facility remains compliant year after year.