Measurement Results of Radioactivity Concentrations in the Drinking Water by Water Suppliers / Local Governments Conducted by the Nuclear Regulation Authority (MEXT till April 2013) and ten prefectures near Fukushima Prefecture (Miyagi, Yamagata, Niigata, Ibaraki, Tochigi, Gumma, Saitama, Tokyo, Kanagawa and Chiba Prefecture) Measurement Results of Radioactivity Concentrations in the Drinking Water by Water Suppliers / Local Governments Conducted by the Nuclear Regulation Authority (MEXT till April 2013) and ten prefectures near Fukushima Prefecture (Miyagi, Yamagata, Niigata, Ibaraki, Tochigi, Gumma, Saitama, Tokyo, Kanagawa and Chiba Prefecture)