WFF -Amsterdam (Netherlands)

  Water Footprint Network -Enschede (Netherlands)

  Water Health - (Netherlands)

  Water Natuurlijk Delfland -Den Haag (Netherlands)

  Water Partner Foundation -Amersfoort (Netherlands)

  WYN - (Netherlands)

  MyWASH - (Netherlands)

  KWR -Nieuwegein (Netherlands)

  Waterpads BV - (Netherlands)

  WaterPlanetEarth -Amsterdam (Netherlands)

  Waterschap De Dommel -Boxtel (Netherlands)

  Waterschap Hollandse Delta -Ridderkerk (Netherlands)

  Waterschap Rijn en IJssel -Doetinchem (Netherlands)

  Watershed Empowering Citizens Consortium -Amsterdam (Netherlands)

  Wetlands International -Ede (Netherlands) [siège]

  Wetsus -Leeuwarden (Netherlands)

  Wetterskip Fryslân -Leeuwarden (Netherlands)

  Wicked Water -Den Haag (Netherlands)

  Windunie -Utrecht (Netherlands)

  Witteveen+Bos -Deventer (Netherlands)

  WECF -Utrecht (Netherlands)

  WfWP -Alphen aan den Rijn (Netherlands)

  ISRIC -Wageningen (Netherlands)

  World Waternet -Amsterdam (Netherlands)

  WYPW - (Netherlands)

  WWF - (Netherlands)

  YDC -Amsterdam (Netherlands)

  ZOA -Apeldoorn (Netherlands)