Levels of radioactive materials in tap water and fall out
(Measured by the Tokyo Metropolitan Institute of Public Health)

Graph of radioactive material levels in tap water (From March 2011)

[Graph]Measurement results of radioactivity levels in tap water in Tokyo

Click on the graph for an enlarged display

[Graph]Measurement results of radioactivity levels in tap water in Tokyo

Click on the graph for an enlarged display

We analyze drinking water taken everyday from a tap directiy connected to the water supply system in the facility of the Tokyo Metropolitan Institute of Public Health every day, using a germanium semiconductor detector that measures types of radioactive nuclides.



Graph of radioactive material levels in fallout (From March 2011)

[Graph]Measurement results of radioactivity levels in fallout (dust and rain) in Tokyo

Click on the graph for an enlarged display

[Graph]Measurement results of radioactivity levels in fallout (dust and rain) in Tokyo

Click on the graph for an enlarged display

We collect dust and rain everyday and analyze them everyday, using a germanium semiconductor detector that measures types of radioactive nuclides.