"Radiation has been detected in the air or water in 13 states, but 'far below levels of public health concern.' Rainwater is called safe to drink. Massachusetts is monitoring milk supply."
"Elevated yet still very low levels of radiation from the Fukushima Daiichi nuclear crisis have now been detected in the air or water in more than a dozen US states and three territories, federal and local authorities say.
Higher than usual levels of radiation were detected by 12 monitoring stations in Alaska, Alabama, California, Guam, Hawaii, Idaho, Nevada, Saipan, Northern Mariana Islands, and Washington State over the past week and sent to Environmental Protection Agency scientists for detailed laboratory analysis, the agency said in a release Monday.
Unusual, yet still very low “trace amounts” of radiation, were also reported in Massachusetts rain water and by state officials and nuclear power plant radiation sensors in Colorado, South Carolina, North Carolina, Florida, and Pennsylvania, the Associated Press and Reuters reported."
"One key area being watched is the US milk supply. After the Chernobyl meltdown in 1986, it was found that cows had eaten grass tainted by radioactive fallout from the reactor. Concentrated radioiodine in the milk was blamed later for causing health problems in humans who drank it."
Christian Science Monitor - Traces of Japanese radiation detected in 13 US states