JSWE hosts a JSWE Symposium every autumn on top of the Annual JSWE Conference in the spring so as to provide opportunities to promote research development in a wide range of fields concerning water environments and encourage communication among members. Unlike the Annual Conference, the Symposium mainly consists of sessions organized by research committees. In addition, a young researchers' session (Organo session) is conducted so as to encourage research and to foster human resources by giving doctoral research promotion awards (Organo Award), targeting students enrolled in doctoral programs.

• Doctoral research promotion award (Organo Award): This award is aimed to widely introduce excellent research outcomes by doctoral students and to encourage research by young researchers.
• Excellent paper of the year (Meta Water Award): This award is aimed to encourage research and is awarded to excellent papers published in the organization's journal throughout the year (the JSWE magazine, JWET).