Monitoring information
of environmental radioactivity level
NSR:Nuclear Regulation Authority


July 31,2014
Readings of environmental radioactivity level by prefecture (Fallout)(Jun, 2014)
July 31,2014
Readings of radioactivity level in drinking water by prefecture (April-June, 2014))
July 31,2014
Seawater radioactivity near TEPCO Fukushima Dai-ichi NPP (Sampling Date: Jul 29, 2014)
July 31,2014
Readings at Monitoring Post out of 20 Km Zone of Fukushima Dai-ichi NPP
July 31,2014
Estimated and measured 1m height environmental radioactivity level at monitoring posts in 47 prefectures (Monitoring Date: July 30, 2014)


Recent sea area monitoring results

Monitoring plans

Monitoring results

Air dose rate

Integreted dose

Water Environment

Readings of dust, soil and environmental sampling

Database / Distribution map

Related Information


Radiation Monitoring Division
Tel : 03-5114-2125