Researchers have confirmed that radioactive cesium isotopes from Japan's damaged Fukushima power plant have already arrived off the coast of Canada, according to Discovery News.
Studies showed cesium-134 and cesium-137 in the Pacific Ocean, and more radiation could follow within the next two to four months.
During the annual American Geophysical Union's Ocean Sciences Meeting in Hawaii this week, scientists confirmed that radioactive water has arrived, and said the concentration levels of the isotopes are still very below safe drinking levels.
"These levels are still well below maximum permissible concentrations in drinking water in Canada for caesium-137 of 10,000 becquerels per cubic metre of water -- so, it's clearly not an environmental or human-health radiological threat," said Dr. John Smith, from Bedford Institute of Oceanography, to BBC News.
Researchers from the Bedford Institute have been continuously sampling water off the coast of Vancouver, British Columbia, since 2011.
None of the Fukushima water has reached U.S. beaches yet, according to Ken Buesseler, from the Woods Hole Oceanographic Institution, but it's not far.
The Fukushima nuclear power plant was affected by the now infamous 2011 tsunami and earthquakes. As a result of the incidents, several hundred tons of radioactive water leaked into the ocean.
Models have put future cesium-137 levels at no higher than 27 Bq/m3, and max levels of cesium-134 at 2 Bq/m3, both of which are below what the EPA and Canada's Department of Environment deem safe for human consumption, according to Discovery News.
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