Presidential Decree
| Document No. | Title | Date Approved |
| PD 1067 | The Water Code of the Philippines |
Republic Act
| Document No. | Title | Date Approved |
| RA 9275 | An act Providing for a Comprehensive Water Quality Management and for other purposes | March 22, 2004 |
Department Administrative Order
| Document No. | Title | Date Approved |
| DAO 2021-19 |
Updated Water Quality Guidelines (WQG) and General Effluent Standards (GES) for Selected Parameters |
June 30, 2021 |
| DAO 2021-23 | Designation of the Bolo River System Water Quality Management Area and Creation of its Governing Board | August 02, 2021 |
| DAO 2021-24 |
Designation of Panglao Island Coastal Waters as a Water Quality Management Area (WQMA) and Creation of its Governing Board |
August 02, 2021 |
| DAO 2021-44 | Designation of Bacuit-El Nido Bay as Water Quality Management Area (WQMA) and Creation of its Governing Board | December 23, 2021 |
| DAO 2019-15 |
Designation of the Boracay Island Water Quality Management and Conservation Area (WQMACA) and Creation of its Governing Board |
November 5, 2019 |
| DAO 2018-03 |
Designation of the Lower Amburayan River System Water |
January 26, 2018 |
| DAO 2018-02 |
Designation of the Upper Amburayan River System Water Quality Management Area and Creation of its Governing Board |
January 26, 2018 |
| DAO 2018-04 |
Designation of Dupong, Matlang and Merida Water Quality Management Area and Creation of its Governing Board |
January 26, 2018 |
| DAO 2018-10 |
Designation of the Malabon-Navotas-Tullahan-Tinajers |
July 2, 2018 |
| DAO 2018-11 |
Designation of the Iyam-Dumacaa River System Water Quality Management Area and Creation of its Governing Board |
July 2, 2018 |
| DAO 2018-12 |
Designation of the Las Piñas – Parañaque River System Water Quality Management Area and Creation of its Governing Board |
July 2, 2018 |
| DAO 2016-04 | Designation of the Naga River Watershed Water Quality Management Area and the Creation of its Governing Board | April 18, 2016 |
| DAO 2016-03 | Designation of the Bued River System Water Quality Management Area and Creation of its Governing Board | April 18, 2016 |
| DAO 2016-08 | Water Quality Guidelines and General Effluent Standards of 2016 | May 24, 2016 |
| DAO 2016-06 | Designation of the Sabang Bay Water Quality Management Area and Creation of its Governing Board | May 3, 2016 |
| DAO 2016-05 | Designation of the Coron Bay Water Quality Management Area and Creation of its Governing Board | May 3, 2016 |
| DAO 2016-19 | Designation of the Cañas-Maalimango River Water Quality Management Area and Creation of its Governing Board | June 21, 2016 |
| DAO 2016-18 | Designation of the Naguilian River System Water Quality Management Area and Creation of its Governing Board | June 21, 2016 |
| DAO 2016-17 | Designation of the Talomo River Water Quality Management Area (WQMA) and Creation of its Governing Board | June 21, 2016 |
| DAO 2016-16 | Designation of the Tagoloan River Basin Water Quality Management Area and Creation of its Governing Board | June 21, 2016 |
| DAO 2016-15 | Designation of the Ayala River Water Quality Management Area and Creation of its Governing Board | June 21, 2016 |
| DAO 2016-14 | Designation of Lake Sebu Water Quality Management Area and Creation of its Governing Board | June 21, 2016 |
| DAO 2015-13 |
Designation of the Calao-Delinquente-Diadi River System Water Quality Management Area and Creation of its Governing Board |
December 17, 2015 |
| DAO 2014-05 |
Designation of Butuanon River Watershed as a Water Quality Management Area (WQMA) and Creation of its Governing Board |
May 29, 2014 |
| DAO 2014-08 |
Designation of the Jalaur River System Water Quality Management Area and Creation of its Governing Board |
November 24, 2014 |
| DAO 2013-01 |
Designation of the Tumaga River Water Quality Management Area and Creation of its Governing Board |
January 24, 2013 |
| DAO 2013-02 | Designation of the Imus – Ylang Ylang – Rio Grande Rivers Water Quality Management Area and Creation of its Governing Board | January 24, 2013 |
| DAO 2013-03 | Designation of the Calapan River Water Quality Management Area and Creation of its Governing Board | January 24, 2013 |
| DAO 2013-04 | Designation of the Davao River Water Quality Management Area and Creation of its Governing Board | January 24, 2013 |
| DAO 2013-05 |
Designation of the Balili River Water Quality Management Area and Creation of its Governing Board |
January 24, 2013 |
| DAO 2013-06 |
Designation of the Pinacanauan de Tuguegarao Water Quality Management Area and Creation of its Governing Board |
January 24, 2013 |
| DAO 2013-16 |
Designation of the Lake Buhi Watershed Water Quality Management Area and the Creation of its Governing Board |
May 27, 2013 |
| DAO 2013-18 | Designation of Cagayan de Oro River Basin and Adjacent Rivers as Water Quality Management Area and Creation of its Governing Board | June 17, 2013 |
| DAO 2013-21 |
Designation of Ormoc Bay and its Associated Watershed Water Quality Management Area and Creation of its Governing Board |
August 27, 2013 |
| DAO 2012-04 |
Designation of the San Juan River System as a Water Quality Management Area and Creation of its Governing Board |
August 22, 2012 |
| DAO 2012-11 |
Designation of the Taguibo River Water Quality Management Area and Creation of its Governing Board | December 28, 2012 |
| DAO 2011-14 |
Designation of the Sinocalan-Dagupan River System as Water Quality Management Area and Creation of its Governing Board |
November 23, 2011 |
| DAO 2010-10 |
Designation of the Silway River as Water Quality Management Area and Creation of its Governing Board |
April 19, 2010 |
| DAO 2009-12 | Designation of the Sarangani Bay Water Quality Management Area and Creation of its Governing Board | November 6, 2009 |
| DAO 2009-11 | Designation of the Iloilo Batiano River Systems Water Quality Management Area and Creation of its Governing Board | November 6, 2009 |
| DAO 2008-07 |
Designation of the Marilao-Meycauayan-Obando River System Water Quality Management Area and Creation of its Governing Board |
May 14, 2008 |
| DAO 2007-28 |
Institutionalizing the Manila Bay Environmental Management Project within the DENR through the Implementation of the Operational Plan for the Manila Bay Coastal Strategy (OPMBCS) | July 31, 2007 |
| DAO 2006-18 |
Designation of the Tigum-Aganan Watershed as Water Quality Management Area and Creation of its Governing Board |
December 29, 2006 |
| DAO 2005-10 | Implementing Rules and Regulation of the Philippine Clean Water Act of 2004 (Republic Act. No. 9275) | May 16, 2005 |
| DAO 2004-25 |
Amending Chapter V, Article I of the Implementing Rules and Regulations of PD 984 by deleting the authority to construct and conversion of Permit to Operate to Discharge Permit for water pollution source/control facilities | August 25, 2004 |
| DAO 2003-27 | Amending DAO 26, DAO 29 an DAO 2000-81 Among others on the preparation and submission of Self Monitoring Report (SMR) | July 4, 2003 |
| DAO 2003-26 | Revised Industrial Ecowatch System Amending Implementing Guidelines of DAO 98-51 Series of 1998 | July 4, 2003 |
| DAO 2003-39 | Implementing Rules and Regulations of DAO 16, Series of 2002 Entitled “The DENR-EMB National Environmental User’s Fee of 2002 | August 18, 2003 |
| DAO 1994-26A |
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 1990-34 | Revised Water Usage and Classifications Water Quality Criteria Amending Section Nos. 68 and 69, Chapter III of the 1978 NPCC Rules and Regulations | March 20, 1990 |
DENR Memorandum Circular
| Document No. | Title | Date Approved |
| DMC 2022-08 |
Reclassification of Balili River |
April 27, 2022 |
| DMC 2019-07 |
Additional List of Classified Water Bodies | September 12, 2019 |
| DMC 2018-10 |
Additional List of Classified Water Bodies | August 23, 2018 |
| DMC 2017-13 |
Additional List of Classified Water Bodies | December 18, 2017 |
| DMC 2016-08 | Additional List of Classified Water Bodies | June 27, 2016 |
| DMC 2015-01 |
Additional List of Classified Water Bodies | February 4, 2015 |
| DMC 2015-05 |
Additional List of Classified Water Bodies | August 11, 2015 |
| DMC 2014-01 |
Additional List of Classified Water Bodies | January 29, 2014 |
| DMC 2013-03 |
Additional List of Classified Water Bodies | January 17, 2013 |
| DMC 2010-08 |
Additional List of Classified Water Bodies | March 17, 2010 |
| DMC 2009-01 | Additional List for Classified Water Bodies | February 25, 2009 |
| DMC 2009-17 |
Additional List for Classified Water Bodies | December 23, 2009 |
| DMC 2017-01 |
List of classified Water Bodies in 2005 | February 27, 2007 |
| DMC 2007-10 | List of classified Water Bodies in 2006 | July 25, 2007 |
| DMC 2005-006 | List of Classified Water Bodies in 2004 | June 23, 2005 |
| DMC 2004-11 | Compliance of all Wastewater Discharges to Upgraded and Reclassified Waterbodies | August 31, 2004 |
| DMC 2004-13 | List of Classified/ Re-classified Water Bodies in 2003 | August 31, 2004 |
| DMC 2003-12 |
List of Classified/Re-Classified Water Bodies in 2002 |
July 7, 2003 |
| DMC 2001-09 |
List of Classified Water Bodies in 2000 |
May 18, 2001 |
| DMC 2000-10 |
List of Classified Water Bodies in 1999 | April 25, 2000 |
| DMC 1999-99-18 |
List of Classified Water Bodies in 1998 |
June 11, 1999 |
| DMC 1998-05 |
List of Classified Water Bodies 1996-1997 |
April 30, 1998 |
| DMC 1997-08 |
List of Classified Water Bodies in 1995-1996 |
May 20, 1997 |
| DMC 1995-06 |
List of Rivers Classified in 1994 |
February 20, 1995 |
| DMC 1994-17 |
List of Rivers/Bays Classified in 1993 |
March 4, 1994 |
| DMC 1993-07 |
Additional List of Classified Rivers/Bays |
February 22, 1993 |
EMB Memorandum Circular
| Document No. | Title | Date Approved |
| EMB MC 2021-01 |
Clarification on the Implementation of Section 10 of DENR Administrative Order No. 2016-08 |
January 27, 2021 |
| EMB MC 2021-16 |
Clarification on the Issuance of Certificate of Accreditation as Pollution Control Officer (PCO) |
December 16, 2021 |
| EMB MC 2020-001 |
Suspension on the Implementation of Advanced Training Modules for Pollution Control Officers | January 22, 2020 |
| EMB MC 2020-002 |
Reiteration on the Implementation of Sections 10 and 14 of DENR Administrative Order No. 2014-02 | January 23, 2020 |
| EMB MC 2020-004 |
Clarification on the Reporting Requirements for Specific Parameters Under DENR Administrative Order No.. 2016-08 or the Revised Water Quality Guidelines and General Effluent Standards of 2016 |
January 29, 2020 |
| EMB MC 2020-25 | Guidelines on the Total Pollution Load Estimates for Freshwater Bodies in relation to its Assimilative Capacity | July 29, 2020 |
| EMB MC 2020-006 | Clarification in the Implementation of Rules 13.8 and 14.18 of DENR Administrative Order No. 2005-10 | February 12, 2020 |
| EMB MC 2020-28 |
Clarification on the Renewal and Revocation of Accreditation of Pollution Control Officers Annex A, B, C, D, E |
July 15, 2020 |
| EMB MC 2020-29 |
Guidelines on the Conduct of Online Training for Pollution Control Officers (PCOs) and Managing Heads |
July 15, 2020 |
| EMB MC 2020-32 |
Clarification on Annex 5 (Requirements for Training Organization/Institution Recognition and its Renewal) Under DAO 2014-02 |
July 29, 2020 |
| EMB MC 2019-001 |
Supplementary Clarification on the coverage of DAO 2016-08 Relative to the Granting of not more than five (5) Years Grace Period |
January 31, 2019 |
| EMB MC 2019-04 | Advance Training Modules for Pollution Control Officers (PCOs) | March 26, 2019 |
| EMB MC 2016-12 | EMB Approved Methods of Analysis for Water and Wastewater | November 21, 2016 |
| EMB MC 2013-06 | Guidelines for Water Quality Management Area Action Planning and LGU’s Compliance Scheme | August 29, 2013 |
| EMB MC 2012-001 | Clarification on the Applicability of Effluent Regulations | February 17, 2012 |
| EMB MC 2009-15 |
Procedural Manual for the Designation of Water Quality Management Areas | |
| EMB MC 2009-14 | Strict implementation of the 50 Meters Buffer Zone | |
| EMB MC 2009-002 |
Amending Revised Procedural Manual for DAO 03-30 dated 30 June 2003 on the Classification of the Fast-food Stores, Restaurants and Similar Quick-Service Establishments | January 23, 2009 |
| EMB MC 2004-10 |
Clarification on the form of Cyanide referred to in the DENR Administrative Order (DAO) No. 34: Revised Water Usage and Classification/Water Quality Criteria and the DENR Administrative Order No. 35: Revised Effluent Standards of 1900 | August 31, 2004 |
| EMB MC 2003-008 | Procedural and Reference Manual for DAO 2003-27 | August 25, 2003 |
| EMB MC 2003-006 | Implementation Scheme for Industrial EcoWatch System 2003 | |
| EMB MC 2014-002 | Recognition of PCO Training Organizations or Institutions |
Joint Memorandum Circular
| Document No. | Title | Date Approved |
| JMC 2009-01 | Creation of the La Mesa watershed Multi-sectoral Management council and defining its functions | July 21, 2009 |