High level of cesium was measured from human excrement in many forms such as dewatered sludge, incineration ash, and drought sludge etc.. The highest reading was 930 Bq/kg.
The samples were taken at night-soil treatment plants in east part of Nagano prefecture.
The parts surrounded by red line indicate the cesium 134/137 from human excrement except for rural community sewerage.
Cesium has been measured from May 2011. (H23 = 2011.)
Iori Mochizuki