NHK (Nippon Housou Kyoukai/Japan Broadcasting Corporation) discovered, through random interviews with local officials throughout Japan, that cesium is showing up all over, thanks to rain.

22 of Japan’s 47 prefectures (states, or glorified counties) have been testing their soil.  16 found their soil is contaminated with cesium.  Some areas are as far south as Osaka, which is about 350 miles away from the Fukushima Daiichi nuclear plant.

Local officials believe the cesium is being spread by clouds that sweep through the Fukushima area then rain on other parts of Japan.

The area with the highest cesium levels, in their soil, is Fukushima, currently at 447,000 becquerels per kilogram.  Tokyo has 55,000 becquerels.

NHK reported that Japan has no guidelines for dealing with radiation contamination in soil.