IWA -Johannesburg (South Africa)

  IWA -Nairobi (Kenya)

  AquaRating - (Netherlands)

  IWA -Den Haag (Netherlands) [siège]

  IWA -London (United Kingdom) [siège]

  IWA -Stockholm (Sweden)

  NKV -Stockholm (Sweden)

  IWA -Genève (Switzerland)

  IWA -Bangkok (Thailand)