- GIZ Afghanistan
- EcoAlbania
- GIZ Albania
- Recherches Informations & Formations Subaquatiques
- Sustainable Travel International
- The Nature Conservancy (TNC) Angola
- Fundación Hábitat y Desarrollo
- Fundación Vida Silvestre Argentina
- Fundación Ambiente y Recursos Naturales (FARN)
- GIZ Armenia
- Ecoparsec Ecological NGO
- Balcombe Estuary Reserves Group Mt Martha Inc
- Cairns and Far North Environment Centre Inc
- Brisbane Catchments Network Inc
- Cape York Natural Resource Management
- Australian River Restoration Centre Limited
- Darebin Creek Management Committee Incorporated
- Derwent Estuary Program Limited
- B4C - Bulimba Creek Catchment Co-ordinating Committee Incorporated
- Conservation Council ACT Region Incorporated
- WWF Austria
- International Commission for the Protection of the Danube River (ICPDR)
- GIZ Bangladesh
- Vzw Grenzeloze Schelde/Escaut sans Frontieres asbl
- River Cleanup
- WWF Belize
- GIZ Benin
- Royal Society for the Protection of Nature
- Clean Bhutan
- Centro Andino para la Gestión y Uso del Agua (Centro AGUA)
- Liga de Defensa del Medio Ambiente (LIDEMA)
- Fundación Natura Bolivia
- WWF Bolivia
- AGUA Y JUVENTUD
- Centro de Estudios Hoya Amazónica - Mojos
- ECOMINGA AMAZÓNICA
- ACEAA-Conservación Amazónica
- Fundación Amigos de la Naturaleza
- UNSKI SMARAGDI
- Arnika
- GIZ Botswana
- The Nature Conservancy (TNC) Botswana
- WWF Brazil
- Ecotox Brasil
- Instituto Conservation International do Brasil
- Renova foundation
- Greenpeace Bulgaria
- GIZ Burkina Faso
- GIZ Burundi
- Wildlife Alliance
- Fisheries Action Coalition Team (FACT)
- River Ocean Cleanup (ROC)
- WWF Cameroon
- Earthroots
- Ecology North
- Saskatchewan Environmental Society
- Fraser Basin Council
- Manitoulin Streams Improvement Association
- The Land Conservancy of British Columbia
- Sentinelles Petitcodiac Riverkeeper
- Lake Ontario Waterkeeper
- Rivers Foundation
- Skagit Environmental Endowment Commission
- KAIROS: Canadian Ecumenical Justice Initiatives
- Shubenacadie Watershed Environmental Protection Society
- Conservation Council of New Brunswick Inc.
- Sandy Lake Conservation Association
- ACAP Saint John
- Chaleur Bay Watersheds Group
- Bathurst Sustainable Development
- Belleisle Watershed Coalition Inc.
- Eastern Charlotte Waterways
- Canaan-Washademoak Watershed Association (CWWA)
- Ocean Wise Conservation
- Yukon Conservation Society
- International Joint Commission (IJC) Canada
- GIZ Chad
- Futaleufu Riverkeeper
- Centro de Ciencias Ambientales EULA - Chile, Universidad de Concepción
- Ecosistemas
- Fundación Nahuelbuta
- Fima
- Comité de Agua Potable Rural Entre Lagos
- Corporación Privada para el Desarrollo de Aysén CODESA
- Fundación Terram
- Greenkeepers
- China Environmental Protection Foundation (CEPF)
- Shenzhen Lvyuan Environmental Volunteers Association
- Greenstone Environmental Protection Center
- Sunny Environmental Promotion Center
- Green Han River
- Alxa SEE Foundation
- Green Camel Bell
- Green-river
- WWF China
- Green Hunan
- Chengdu Urban Rivers Association
- Censat Agua Viva
- CORPORACIÓN PARA EL DESARROLLO SUSTENTABLE DEL PIEDEMONTE AMAZÓNICO (CORDESPA)
- WWF Croatia
- Terra Cypria
- Děti Země
- Arnika
- Faculty of Fisheries and Protection of Waters
- The Lower Morava Biosphere Reserve
- RiverData.org
- Congo Basin Forest Partnership (CBFP)
- GIZ Democratic Republic of the Congo
- Friluftsraadet (Blue Flag)
- Fundación Cuidemos el Planeta con Reyes Guzmán
- Fundacion Dominicana de Estudios Marinos, Inc
- Fundación Saltadero
- Plan Yaque, Inc.
- Programa EcoMar, Inc.
- FUNDOCAD
- SOH CONSERVACION
- WWF Ecuador
- Ecuadorian Rivers Institute
- GIZ Egypt
- GIZ African Union (AU)
- Finnish Association for Nature Conservation
- Vantaanjoen ja Helsingin Seudun Vesiensuojeluyhdistys r.y.
- Eau et Rivières de Bretagne
- WWF France
- Christngoma
- WWF Georgia
- Association Green Alternative
- WWF Germany
- Global Nature Fund
- Naturschutzbund Deutschland
- CLEAN RIVER PROJECT
- SaveOder
- Living Lakes Network
- Plastic Punch
- WWF Greece
- WWF Guatemala
- GIZ Guinea
- SGP The GEF Small Grants Programme Guyana
- WWF Honduras
- Environmentalist Foundation of India (E.F.I)
- Bangalore Environment Trust
- India Water Foundation
- Isha Outreach
- Global Science Academy
- R.O.L.E. (Rivers, Oceans, Lands, Ecology) Foundation
- WWF Indonesia
- Greeneration
- Waterkeepers Iraq
- Save the Tigris and Iraqi Marshes Campaign
- GIZ Iraq
- Zalul Environmental Association
- Environmental Association - Misgav
- Green Course
- Neighbors of the Yarkon
- Terra Nuova
- WWF Italia Onlus
- We Are Here Venice
- Alligator Head Foundation
- WWF Japan
- ECOM
- Institute of Hydrobiology and Ecology
- Regional Environmental Centre for Central Asia (CAREC)
- WWF Kenya
- EcoZ
- RILINDJA GJELBER
- Helvetas Swiss Intercooperation Kyrgyzstan
- World Wide Fund For Nature
- Mekong River Commission
- ACD: Association for Community Development laos
- GIZ Laos
- Vides aizsardzības klubs
- Latvian Fund for Nature
- Operation Big Blue Association (OBBA)
- Greenpeace Middle East and North Africa (MENA)
- Green Youth Initiative
- Sustainable Environmental Social Safety Association SESSA
- RECYCLER
- GIZ Lesotho
- Friends of the Earth Macedonia / Dvizhenje na Ekologistite na Makedonija
- GIZ North Macedonia
- WWF Madagascar
- Association of Environmental Professional in Malawi
- Global Environment Centre (GEC)
- Water Watch Penang (WWP)
- Pronatura Noroeste AC
- WWF Mexico
- Women’s Association for the Environment Protection and Sustainable Development (AFPMDD)
- Eco-TIRAS
- National Environmental Center
- GIZ Moldova
- Ecological Council of the Citizens of Mongolia
- United Movement of Mongolian Rivers and Lakes (UMMRL)
- Mongolian Water Forum
- Crnogorsko Društvo Ekologa
- Eco Team
- GIZ Morocco
- Airavati Organisation
- Kayan New Generation Youth (KNGY)
- Karen Rivers Watch
- Kachin Development Networking Group (KDNG)
- Karen Environmental and Social Action Network (KESAN)
- WATO Nepal
- Volunteers Initiative Nepal (VIN)
- Center of Research for Environment, Energy and Water (CREEW)
- Youth Alliance for Environment (YAE)
- Climate Advocacy International (CAI)
- EcoHimal Nepal
- Wereld Natuur Fonds Netherlands
- Friends of the Earth International
- WRI Europe
- 5W Foundation
- WWF New Zealand
- GIZ Nicaragua
- Marine and Coastal Conservation Society of Nigeria
- Palestinian Wastewater Engineers Group (PWEG)
- Auja Eco Center
- GIZ Palestinian territories
- Marea Verde
- Humanity and Nature Indigenous Women's Association Inc.
- International river network Paraguay
- Para La Tierra
- Sobrevivencia
- WWF Peru
- World Wide Fund for Nature
- Greenpeace Philippines
- Kapampangan Manalakaran
- Fundacja WWF Polska
- Federacja Zielonych GAJA
- WWF Portugal
- WWF Romania
- Байкальский исследовательский центр
- Друзья Балтики
- Зеленый Патруль
- Мой Байкал
- Зеленый крест
- Russian Ecological Society
- Красноярская региональная общественная экологическая организация ПЛОТИНА
- Всероссийское общество охраны природы
- Ulyanka Ekologia
- Дикие дворники
- Спасем Ястребиное
- Экозащита!
- Клуб Хранители Озера
- WWF Russia
- Центр охраны дикой природы / Biodiversity Conservation Center
- Rivers without Boundaries
- GIZ Rwanda
- Young Researchers of Serbia (YRS)
- WWF Serbia
- GIZ Serbia
- Waterways Watch Society (WWS)
- Nexus for Development
- Ľudia a voda
- GIZ Somalia
- WWF South Africa
- GIZ South Africa
- A Rocha South Africa
- FRESH Hennops River Revive
- Korea Greenpia Federation
- Korean Federation for Environmental Movement - Re-naturalization of the Four Rivers
- KOREA WATER FORUM
- Korea Environment & Water Works Institute
- WWF Korea
- The Korean Association for Nature Landscape Conservation
- Ecological Conservation Citizens' Meeting
- Environmental Movement Federation | Together with the Earth, with the Citizens
- Seoul Environmental Federation
- GIZ South Sudan
- Alarm Green Foundation - AGF
- Asociación pola defensa da ría
- GIZ Sudan
- Coalition Clean Baltic (CCB)
- WWF Switzerland
- Oceaneye
- Natural Environmental Protection Foundation
- Citizen of the Earth
- Kaohsiung Samfar Raft Association
- Blue Donggang Creeck Conservation Association
- WWF Tanzania
- GIZ Tanzania
- Living River Siam
- WWF Greater Mekong Thailand
- GIZ Thailand
- GIZ Tunisia
- WWF Turkey
- Black Sea NGO Network
- Southeast Alaska Conservation Council (SEACC)
- Yukon River Inter-Tribal Watershed Council (YRITWC)
- Georgia Conservancy
- San Diego Coastkeeper
- Sloop Woody Guthrie
- WWF USA
- The Piscataquog Land Conservancy
- Rock the Earth
- Ohio Environmental Council
- Duwamish River Community Coalition
- Clinton River Watershed Council
- Milwaukee Riverkeeper
- We Love Clean Rivers
- Muncie Clean and Beautiful
- Charles River Watershed Association
- Lake Travis Cleanup
- Pacific Environment
- American Rivers
- Coastal Conservation Association
- Waterkeeper Alliance
- Waterkeepers Florida
- ManaSota-88
- Our Santa Fe River, Inc.
- People for Protecting Peace River
- Calusa Waterkeeper
- The Indian Riverkeeper
- International Joint Commission (IJC) USA
- International Rivers
- American Friends of The Ocean Cleanup, Foundation
- The North American Marine Environment Protection Association (NAMEPA)
- Save the Water, Inc.
- Anacostia Watershed Society
- Alliance for the Chesapeake Bay
- Colorado Open Lands
- Cincinnati Nature Center
- Chesapeake Bay Foundation (CBF)
- Central Savannah River Land Trust
- Door County Land Trust
- Forest Trends
- Eno River Association
- Friends of the Columbia Gorge
- Iowa Natural Heritage Foundation
- Natural Resources Council of Maine
- Great Lakes Indian Fish and Wildlife Commission (GLIFWC)
- Restore America’s Estuaries
- COLLIER COUNTY POLLUTION CONTROL
- Tip of the Mitt Watershed Council
- Water.org
- Living Lands & Waters
- Water is Life (WiL)
- Upper Nehalem Watershed Council
- Bigodi Turacos for Conservation Centre (BTCC)
- GIZ Uganda
- WWF Ukraine
- Наш дім – Манява
- Free Svydovets
- Екосфера
- Black Sea Women's Club
- Зелений Світ
- Почаяна
- Екопарк Осокорки
- GIZ United Arab Emirates
- WWF United Kingdom
- Chartered Institution of Water and Environmental Management
- Sea-Changers
- Keep Wales Tidy (Blue Flag)
- Synchronicity Earth
- Ichthion
- Environmental Innovations Ltd
- Environment Agency York Community Flood Hub
- Asociación Civil Pindó Azul
- Asociación Latinoamericana de Hidrología Subterránea para el Desarrollo - Uruguay
- Regional Environmental Centre for Central Asia (CAREC)
- Asociación Civil Ecoazul
- WWF Vietnam
- HELVETAS VIETNAM
- GIZ Yemen
- GIZ Zambia
- The Zambezi Society