Donor
- Global Environmental Facility (GEF)
Assessment Coordination Group
- Swiss Agency for Development and Cooperation (SDC)
- United Nations Educational, Scientific and Cultural Organization (UNESCO)
- UNESCO - Hydrological Programme (UNESCO-IHP)
- International Groundwater Resources Assessment Centre (IGRAC)
- International Shared Aquifer Resources Management (ISARM)
- World Water Assessment Programme (WWAP)
- Food and Agriculture Organization of the United Nations (FAO)
Regional Partners
- UN Economic Commission for Europe (UNECE)
- UN Economic and Social Commission for Western Asia (UN-ESCWA)
- UN Economic and Social Commission for Asia and Pacific (UN-ESCAP)
- UN Economic Commission for Africa (UNECA)
- Organization of American States (OAS)
- Economic Commission of the West African States (ECOWAS)
- Southern African Development Community (SADC)
- Economic Community of Central African States (ECCAS)
- Intergovernmental Authority on Development (IGAD)
- Observatoire du Sahara et du Sahel (OSS)
Providers of data and experties
- International Atomic Energy Agency (IAEA)
- International Association of Hydrogeologists (IAH)
- International Association for Water Law (AIDA)
- Federal Institute for Geosciences and Natural Resources (BGR)
- United States Geological Survey (USGS)
- Research Institute for Humanity and Nature (RIHN)
- University of Frankfurt
- University of Western Cape
- University of Arizona
- Simon Fraser University
- San Francisco State University
- China University of Geosciences
- International Union for Conservation of Nature (IUCN)
- International Network of Water-Environment Centres for the Balkans (INWEB)
- International Water Management Institute (IMWI)
- University of Tsukuba