Dr. Hiroaki Furumai is an Institute Professor at the Research and Development Initiative, Chuo University and a Professor Emeritus, The University of Tokyo. After retiring from the University of Tokyo in March 2022, he established a research unit at Chuo University in April and continue his research. After receiving the Docter of Engineering from the University of Tokyo in 1984, he worked at Tohoku University, Kyushu University, and Ibaraki University. From 1997 he worked at the University of Tokyo and became a professor in 1998 and engaged in teaching and research for 25 years. His research themes at the University of Tokyo include 1) Sustainable urban drainage management focusing on flood control and wet weather pollution, 2) Control of microbial function and microbial community in water treatment and distribution systems, 3) Management of unregulated organic matter for water use. Then he focused on the research on advancement of urban drainage management at Chuo University.