This report is an output of the OECD Environment Policy Committee (EPOC) and its Working Party on Biodiversity, Water and Ecosystems (WPBWE).
Aude Farnault of the OECD Environment Directorate (ENV) is the main author of this report and led the work to develop this publication. Furkan Kavuncu (ENV) co-authored the chapters on bond finance and Islamic finance and other sections of the report. Goufrane Mansour (Ecopsis) co-authored the chapters on public-private partnerships and results-based financing. Sophie Trémolet (ENV) provided overall direction and quality control on the report. The report was prepared under the overall guidance of Walid Oueslati, Head of the Climate, Biodiversity and Water Division (ENV). The author team is grateful to Jennifer Timmins (ENV) and Den Bastunali (ENV) for managing the report layout.
The Islamic Development Bank (IsDB), in particular Idrissa Dia, Nizar Zaied, Bakhodir Mizraev and Zied Amama, contributed through financial support, technical inputs and co-ordination of stakeholder engagement in close collaboration with the OECD team. The World Water Council, as a founding member of the Roundtable on Financing Water, also contributed by purchasing data for the chapter on bond finance. The data used for the chapter on bonds is from the Climate Bonds Initiative.
This report is based on analytical work conducted in preparation for the 12th meeting of the Roundtable on Financing Water, held at the IsDB Headquarters in Jeddah in April 2025, and on the outcomes of the meeting. The Roundtable on Financing Water is a joint initiative of the OECD, the Government of the Netherlands, the World Water Council and the World Bank.
The authors are grateful to the experts who contributed through interviews and reviews during the preparation of this report, including Lasse Moller (Development Co-operation Directorate, Finance for Sustainable Development, DCD/FSD), Iqra Shaikh (DCD/FSD), Camilo Gamba Gamba (DCD/ Secretariat of the International Forum on TOSSD), Juan Asensio (DCD/Policies and Network Division), Valentina Cociancich (Directorate for Financial and Enterprise Affairs, Capital Markets and Financial Institutions Division, DAF/CM), Adriana De La Cruz (DAF/CM), Gustavo Saltiel (expert, formerly World Bank), Adnan Aziz (Global Islamic Finance Program for Climate, Nature and Development, GIFP), Azhar Aslam (Standard Chartered Bank), Lina Osman (Standard Chartered Bank), Mustafa Adil (London Stock Exchange Group, LSEG), Adam Scheuer (LSEG), Jinan Al Taitoon (LSEG), Hala Alhamed (Mott MacDonald), Muniruddeen Lallmahomood (UNDP's Istanbul International Center for Private Sector in Development), Christian Guckel (SEDCO Capital), Damak Mohamed (Standards & Poor, S&P), Rawan Oueidat (S&P), Blake Goud (Responsible Finance & Investment Foundation), Ali Awdeh (Union of Arab Banks, UAB), Dina Kaddouh (UAB), Robert Hope (Uptime Global), Carlos Alexandre Nascimento (University College London), Cate Lamb (Blue Bond Accelerator), Giuseppe Musumeci (University of Catania), Marjan Muhammad (INCEIF University/INSRA Institute), Mohd Zaidi Md Zabri (INCEIF/INSRA), Nurhuda Othman (INCEIF/INSRA), Maya Puspa Rahman (ISRA/INCEIF), Sajid Pareeth (Expo City Dubai).