Here is a recent map showing the spread of cesium-137. Note the increased concentration over the United States. Cesium-137 has been detected in drinking water and milk here in the United States. Cesium and Tellurium were found in Boise, Las Vegas, Nome and Dutch Harbor, Honolulu, Kauai and Oahu, Anaheim, Riverside, San Francisco, and San Bernardino, Jacksonville and Orlando, Salt Lake City, Guam, and Saipan while Uranium-234, with a half-life of 245,500 years has been found in Hawaii, California, and Washington.
http://www.prisonplanet.com/cesium-137-threat-grows-while-corporate-media-remains-mute.html