From the daily yomiuri
At least 120,000 tons of sludge and ash either confirmed or suspected to have been contaminated by radiation from the Fukushima No. 1 nuclear power plant has been put into storage at water treatment and sewage plants in Tokyo and 13 eastern prefectures, it has been learned.
Municipalities concerned have called on the central government to find locations where the contaminated sludge and ash can be treated or safely disposed of. The Health, Labor and Welfare Ministry on Thursday released the results of a survey on dehydrated sludge being stored at water treatment plants in Tokyo and 13 other prefectures, including Miyagi, Yamagata, Fukushima and Shizuoka, as of July 12.
Data on dehydrated sludge and ash stored at sewage plants as of Wednesday was supplied by local governments in the 14 prefectures and tallied by The Yomiuri Shimbun. The ash was produced by incinerating mud.