... Yamamoto 3) 1) Department of Urban Engineering, The University of Tokyo, 7-3 -1 Hongo, Bunkyo-ku, Tokyo 11 3-8 656, Japan. (e-mail: hassan@env.t.u-tokyo.ac.jp) *Corresponding author 2) Integrated ... 7-3 -1 Hongo, Bunkyo-ku, Tokyo 11 3-0 033, Japan. (e-mail: yamamoto@esc.u-tokyo.ac.jp ; nakajima@esc.u-tokyo.ac.jp) ABSTRACT A large number of drinking water treatment units have been installed ... chronic arsenicism in PR China (Xia and Liu, 2004) state that, up to now, chronic arsenicism via drinking-water is found in Taiwan, Xinjiang, Inner Mongolia, Shanxi, Ningxia, Jilin, Qinghai, Received...