This report was authored by Lylah Davies of the OECD Environment Directorate and Vincent van Langen and Alexander Roberts of the OECD Public Governance Directorate. Jaejin Han, Minseok Choi, Sinhye Jeong, Sangwook Lim, Ilhyang Park, Shiksha Bastola of Asia Water Council (AWC) authored Chapter 4 on Development of a centralised national integrated water information system and contributed to Chapter 5, under the supervision of Yongdeok Cho, AWC Secretary General. Sophie Trémolet, Water Team Lead in the Climate, Biodiversity and Water Division of the OECD Environment Directorate provided overall direction and quality control, under the supervision of Walid Oueslati, Head of the Climate, Biodiversity and Water Division, OECD Environment Directorate. Giuseppa Ottimofiore provided direction and quality control for Chapter 2.
The author team is grateful for inputs from Nathaniel Santos (OECD consultant), Gábor Kisvárdai (OECD), Laura Smith (OECD), Naina Mangtani (OECD), Alan Said Hernandez Vazquez (OECD), Jiyul Shin (OECD), Dr. Kyungtaek Yum (AWC Consultant) and Dr. Kukheon Han (AWC Consultant). The team would like to acknowledge Nassera Belkhiter and Jennifer Timmins (OECD) for managing the report layout and Sama Al Taher Cucci (OECD) for providing communications guidance.
The National Dialogue on Water in the Philippines was made possible through the financial support of the Ministry of Climate, Energy and Environment (MCEE) of the Republic of Korea, which is gratefully acknowledged. The team is grateful for the inputs of stakeholders and experts during interviews, workshops and focus groups held online and in person in Manila between October 2024 and December 2025. Special thanks go out to the staff of the Department of Economy, Planning and Development (DEPDev) and the Department of Environment and Natural Resources Water Resource Management Office (DENR-WRMO).
The authors are also grateful to the experts from the National Water Resource Board (NWRB) and Local Water Utilities Administration (LWUA), Metropolitan Waterworks and Sewerage System – Regulatory Office (MWSS-RO), the Metropolitan Waterworks and Sewerage System (MWSS), Maynilad Water Services, Philippine Economic Zone Authority (PEZA), Subic Bay Metropolitan Authority (SBMA), the Department of Economy, Planning and Development, the Department of Health (DOH), Department of Finance (DOF), Department of the Interior and Local Government (DILG), Public-Private Partnership Centre (PPPC), Cooperative Development Authority (CDA), the World Bank, the Asian Development Bank (ADB), the former USAID Safe Water, the Embassy of the Kingdom of the Netherlands, the Embassy of the United Kingdom, United Nations (UN) partners and the numerous participating water districts and local government units.
The report also benefited from contributions from Ana Teresa Albuquerque, former Executive Board Member of the Water and Waste Services Regulation Authority (ERSAR) of Portugal, Brian McIntosh, Griffith University, Andrea Guerrini, former Commissioner of ARERA, the Italian Regulatory Authority for Energy, Networks and Environment, Anna Brakey, Commissioner of ACCC, the Australian Competition & Consumer Commission and Adam Wilson, CEO of ESCOSA, the Essential Services Commission of South Australia.