Ambassade de France -Tokyo (Japan)

  APO -Hirakawa-cho (Japan)

  Bureau of Waterworks Tokyo Metropolitan Government - (Japan)

  UD/MH -Tokyo (Japan)

  CTI Engineering - (Japan)

  CTI Engineering Co Ltd - (Japan)

  Earth and Human Corporation -Tokyo (Japan)

  UNICEF -Tokyo (Japan)

  Fuji Clean Co.Ltd. - (Japan)

  Fujitsu Research Institute - (Japan)

  FUKAI SOUKEN - (Japan)

  Gifu University - (Japan)

  GDRC -Kobe (Japan)

  globalcommunity - (Japan)

  UBNWTRSE -Sapporo (Japan)

  Hokkaido University -Hokkaido (Japan)

  Hosei University - (Japan)

  IGES -Kanagawa (Japan)

  Institute of Water and Environment Business - (Japan)

  IETC -Osaka (Japan)

  JGRC -Tokyo (Japan)

  JICA -Tokyo (Japan) [siège]

  Japan International Research Center for Agricultural Sciences - (Japan)

  Japan International Research Center for Agricultural Sciences (JIRCAS) - (Japan)

  Japan River Association - (Japan)

  JSC -Tokyo (Japan)

  JSWA -Tokyo (Japan)

  JAT -Tokyo (Japan)

  JWF -Tokyo (Japan)

  JIID - (Japan)

  Japanriver Association - (Japan)

  Kindai Eiga Kyokai -Tokyo (Japan)

  Kokusai Kogyo Co.,LTD. - (Japan)

  Kyoto University -Kyoto (Japan)

  Kyushu University - (Japan)

  Kyushu University -Fukuoka (Japan)

  LIXIL Corporation - (Japan)

  Ministry of Land, Infrastructure,Transport and Tourism -Tokyo (Japan)

  Nakui Agricultural High School - (Japan)

  NARBO - (Japan)

  PWRI -Tsukuba City (Japan)

  CITYNET -Yokohama (Japan)

  RIHN -Kyoto (Japan)

  Sosei World Co., Ltd - (Japan)

  Sosei World Co.,Ltd - (Japan)

  SJWP - (Japan)

  Suntory - (Japan)

  TDLC -Tokyo (Japan)

  Toyo University - (Japan)

  UNESCO - (Japan)