1) Food and water safety

• Detection of radioactive materials in tap water, instructions associated with food by Director-General of the Nuclear Emergency Response Headquarters, etc
  (Ministry of Health, Labour and Welfare)
• Radioactive Contamination of Food in Japan
  (Food Safety Commission)
• Emergency Report on Radioactive Nuclides [PDF] (48KB)
  (Food Safety Commission)

2) Transport and shipment safety

• Japan Air Transport
  (Ministry of Land, Infrastructure, Transport and Tourism)
• Measurement of radiation doses around the Metropolitan Airports
  (Ministry of Land, Infrastructure, Transport and Tourism)
• Navigational Warnings
  (Japan Coast Guard)
• Measurement of radiation doses around the Port of Tokyo and Yokohama
  (Ministry of Land, Infrastructure, Transport and Tourism)

3) Reading of radioactivity level

• Reading of environmental radioactivity level
• by prefecture, Time series data (Graph)
  (Ministry of Education, Culture, Sports, Science and Technology)