Nuclear radiation in Teton Valley?

"The truth," said James T. Powell, "is probably somewhere in between." Powell, executive director of local watchdog organization, Keep Yellowstone Nuclear Free, believes the alarmists' theories about government conspiracies and EPA cover-ups are unfounded. With six Department of Environmental Quality stations in Idaho alone and hundreds of radiation monitors stationed around the country, inspected by thousands of state and federal employees, there is simply no way the numbers could be falsified. And he doesn't think the levels seen so far are particularly dangerous.
But he is troubled that the EPA has taken as few samples as it has. A RadNet surveillance of radiation in precipitation, drinking water, milk and air cartridges, instituted in the wake of the nuclear event, was halted in Idaho due, the EPA website claims, to "a thorough data review showing declining radiation levels in these samples."
The problem with this explanation is that Idaho radiation levels were not declining when RadNet monitoring stopped reporting samples April 14. Boise's first precipitation sample, collected March 22, measured I-131 (a radioactive isotope of iodine) levels at 242 pCi/l (picocuries, or units of radioactivity, per liter). That is about 80 times the legal drinking water limits, the highest levels of rainwater radiation seen in the nation at any time since the Fukushima disaster. Since I-131 has a short half-life, Idaho Department of Environmental Quality said we could expect those levels to decrease quickly.
But, five days later, I-131 had not decreased. Two more samples were taken March 27. The sample recorded on the EPA's more accessible public site showed, in fact, a 60 percent increase, with I-131 measuring in at 390 pCi/l. A second sample, found through an in-depth search of EPA online records, yielded I-131 concentrations of 422 pCi/l. After that, no samples were recorded on the EPA site. And we can't expect an update any time soon - RadNet monitors were shipped out of Boise Tuesday.
This is especially worrisome for Boise residents who get their city water from surface water. Unlike Teton Valley, where water comes from deep in the Snake River Aquifer, Boise city water comes from a surface source, meaning whatever is in the rain is in the water. There is no filtration system in place for radionuclides like I-131.
This is appealing fodder for alarmists looking to "expose" an "EPA cover-up." While Powell doesn't think the EPA has been dishonest, he does think the EPA communication with the public has been unsatisfactory.