DENR Administrative Order No. 2021-19 Updated Water Quality Guidelines (WQG) and General Effluent Standards (GES) for Selected Parameters.

This Order is issued to update the water quality guidelines for selected parameters based on the current classification of water bodies and on its beneficial use. In addition, the effluent standards for selected parameters are updated based on its perceived impact to the activities in the area and to the environment. This Order covers the updating of WQG and/or GES for the parameters mentioned in Section 3 namely AmmoniaasNH3-N, Boron, Copper as Dissolved Copper, Fecal Coliform, Phosphate as Phosphorus and Sulfate. This also cover additional requirements on the use of GES for strong wastewater for BOD, requirements for modification of Significant Effluent Quality Parameter (SEQP).
The text consists of 9 Sections as follow: Basic Policy (1); Objectives (2); Scope and Coverage (3); Updated WQG and GES for Selected Parameters (4); Requirements for Modification of Significant Effluent Quality Parameters (SEQP) (5); Amendment to Section 7.0 of DENR AO 2016-08 (6); Separability Clause (7); Repealing Clause (8) and Effectivity (9).