Oxford University -Oxford (United Kingdom)

  University of Sheffield -Sheffield (United Kingdom)

  University of Southampton -Southampton (United Kingdom)

  University of Strathclyde -Glasgow (United Kingdom)

  University of Surrey - (United Kingdom)

  University of Sussex -Brighton (United Kingdom)

  UWE Bristol -Bristol (United Kingdom)

  University of Warwick -Coventry (United Kingdom)

  UNPRI - (United Kingdom)

  UNSGAB -London (United Kingdom)

  UPGro - (United Kingdom)

  Uppsala University & Swedish Institute of Agriculture - (United Kingdom)

  Uptime -Oxford (United Kingdom)

  Veolia -London (United Kingdom)

  Vitol Foundation -London (United Kingdom)

  WASH NTD - (United Kingdom)

  Wasteaid -Wye (United Kingdom)

  WELL -Leicestershire (United Kingdom)

  Water and land resources center - (United Kingdom)

  WSUP -London (United Kingdom) [siège]

  Water for Africa -Longton (United Kingdom)

  Water for People - (United Kingdom)

  WRM Ltd -Chipping Campden (United Kingdom)

  Ofwat -Birmingham (United Kingdom)

  Water UK - (United Kingdom)

  Water Witness International -Edinburgh (United Kingdom)

  WEDC -Loughborough (United Kingdom)

  WaterAid -London (United Kingdom) [siège]

  watersanitationhygiene.org - (United Kingdom)

  Welltech Consortium - (United Kingdom)

  WHO - (United Kingdom)

  Womankind -London (United Kingdom)

  WIEGO -Manchester (United Kingdom)

  World Bank -London (United Kingdom)

  WEC -London (United Kingdom)

  World Energy TV - (United Kingdom)

  ORT -London (United Kingdom)

  WVI -Milton Keynes (United Kingdom) [siège]

  World Water TV - (United Kingdom)

  World Water Week SOAS. - (United Kingdom)

  WWF -Godalming (United Kingdom)

  Worldmapper -Sheffield (United Kingdom)

  Wychwood Economic Consulting Ltd -Chipping Norton (United Kingdom)

  WYG International - (United Kingdom)

  Xeros - (United Kingdom)

  Xynteo - (United Kingdom)

  Yorkshire Water -Bradford (United Kingdom)

  Zed Books -London (United Kingdom)