Employees of the forest industry living in Tamura city, Miyakoji district, will be exposed to 2.3 millisieverts of radiation per year, while teachers will receive from 0.9 to 1.2 millisieverts and farmers will receive only 0.7 millisieverts annually. Citizens of Kawauchi, where the evacuation order might be lifted in July, are risking even more as radiation levels there amount to 3 millisieverts a year.

The Japanese government earlier said it is determined to bring radiation levels in Fukushima Prefecture down to 1 millisievert or less. Meanwhile, people have been allowed to return to their homes in areas where the radiation levels have dropped to at least 20 millisieverts.

At the request of evacuees, Japan’s National Institute of Radiological Sciences and the Japan Atomic Energy Agency were asked to measure air dosage rates and individual radiation doses in Fukushima’s three major cities: Tamura, Kawauchi and Iitate. The midterm report was prepared last October, but was withheld by the government and only released today after numerous inquiries from Japanese media and the victims of Fukushima disaster.

Last August saw the worst radioactive water leak at the crippled Fukushima plant since the 2011 disaster, after 300 tons of water with strontium levels equaling 80 million becquerels per liter leaked from a storage reservoir into the Pacific Ocean. The leak was then classified as a level three incident on the International Nuclear Event Scale.