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  WTA -Vientiane (Laos)

  Water1st -Seattle (Etats Unis)

  WaterAid -Antananarivo (Antananarivo I/Analamanga)(Madagascar)

  Watershed Empowering Citizens Consortium -Amsterdam (Pays Bas)

  WE Consult, Water Supply and Mapping -Maputo (Mozambique)

  Winrock International -Little Rock (Etats Unis) [siège]

  WEP -Abuja (Nigeria)

  WFP -Freetown (Western Area Urban District/Western Area)(Sierra Leone)

  ISRIC -Wageningen (Pays Bas)

  XIMB -Odisha (Inde)

  Yasagu -Bamako (Bamako/Bamako)(Mali)