Purposes of the Japan Society on Water Environment's activities include
(i) academic surveys, researches, and the promulgation of knowledge in fields related to water environments,
(ii) contribution to preserve and create healthy water environments, and
(iii) services towards academic and cultural development.

Activities conducted for these purposes include
(i) the publication of journals as a tool to distribute academic and technical information,
(ii) the hosting of the Annual JSWE Conference and JSWE Symposium to provide opportunities for members to freely exchange opinions,
(iii) the carrying out of award-giving activities for nurturing future leaders and the promoting of cultural activities for water environments,
(iv) the publication of journals written in English for international exchange and cooperation,
(v) the hosting of international conferences and related award-giving activities, and
(vi) the hosting of seminars so as to put the latest information into circulation.