Laws and Policies - Water Quality Management
| PD 979 | Aug. 18, 1976 | PROVIDING FOR THR REVISION OF PRESEDENTIAL DECREE NO. 600 GOVERNING MARINE POLLUTION |
| DAO 90-34 | REVISED WATER USAGE AND CLASSIFICATION/WATER QUALITY CRITERIA AMENDING SECTION NOS. 68 AND 69, CHAPTER III OF THE 1978 NPCC RULES AND REGULATIONS |
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| DAO 90-35 | REVISED EFFLUENT REGULATIONS OF 1990, REVISING AND AMENDING THE EFFLUENT REGULATIONS OF 1982 | |
| DAO 94-26A | PHILIPPINE STANDARDS FOR DRINKING WATER 1993 UNDER THE PROVISION OF CHAPTER II, SECTION 9 OF PD 856, OTHERWISE KNOWN AS THE CODE ON SANITATION OF THE PHILIPPINES. | |
| DAO 03-27-FINAL Manual SMR | Aug. 25, 2003 | PROCEDURAL AND REFERENCE MANUAL FOR DAO 2003-27 |
| RA 9275-Clean Water Act | Mar. 22, 2004 | AN ACT PROVIDING FOR A COMPREHENSIVE WATER QUALITY MANAGEMENT AND FOR OTHER PURPOSES |
| DAO 05-10-CWA-IRR | May 16, 2005 | IMPLEMENTING RULES AND REGULATIONS OF THE PHILIPPINE WATER ACT OF 2004 (REPUBLIC ACT NO. 9275) |