- This data was created based on the results of drinking water (tap water) monitoring released to the public in the Secretariat of the Nuclear Regulation Authority website.
- Radionuclides analyses of collected water samples have been conducted using a germanium semiconductor nuclide analysis device. The sampling frequency was (1) every day between March 18, 2011 and December 28, 2011, and (2) 3-month accumulation since January 2012.