Traces of radioactivity of damaged nuclear power facilities in Japan in the rain in the northeastern United States were recognized, but pose no health risks, officials said.
Ohio found reported increased radiation levels in precipitation on the Monday after the environmental protection agency monitored similar cases in Massachusetts and Pennsylvania.
Researchers at case Western Reserve University in Cleveland, Ohio, she said small amounts of iodine-131 from Japan in rainwater collected from the roof of a building recognized campus.
"In the theory of the iodine-131 radioactive waste processing facility, could come", said Professor Gerald Matisoff geology, monitors the rainwater, transmitted in Lake Erie for the EPA.
"But we know that it is from Japan." "The isotope is seen around the world."
Matisoff "appreciated" the levels of emissions is about one-tenth of the natural radiation, the University said in a statement.
The EPA, in a update Sunday, said there reports of "increased level of radiation in the last rainfall events" in Massachusetts and Pennsylvania and that it this data "has been validated."
The EPA has been monitoring radiation from the nuclear power plant in Fukushima in Japan and had previously recognized "very low radioactive material" in the United States, while say, that they "were expected" and that "discovered the levels far below the level of public health concern."
"Expect increased levels of radioactive material in rain water was as one of the nuclear incident, after the events in Japan radiation in the atmosphere of travel is known," added to the EPA.
The Agency has stepped up its monitoring of precipitation, drinking water and other potential exposure routes for radiation as a precaution.
Last week, EPA cited "Minuscule level of one isotope, which corresponded to the Japanese nuclear incident", was also not "concern for human health."
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