The U.S. Environmental Protection Agency says they have found trace amounts of iodine-131 in drinking water in the states of Washington and Idaho.

The samples were taken last week, at Boise, Idaho and Richland, Washington. The results were just released.

The EPA also says they picked up trace amounts of radiation in rain water.

I checked the Idaho RadNet site and, so far, there is no mention of the water tests by the EPA.  The information is in the most recent EPA press release.