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

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.

• ⇒ List of past data
• ⇒ Measurement results of radioactivity levels in purified water at water purification plants in Tokyo (Bureau of Waterworks)

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

• ⇒ List of past data