Morgan Weber Cache Rich Davis Salt Lake Tooele Juab Millard Beaver Iron Washington Kane Garfield Piute Wayne Sevier Emery Sanpete Carbon Utah Wasatch Summit Daggett Duchesne Uintah Grand San Juan Box Elder Greater than 4 pCil Between 2 and 4 pCil Less than 2 pCil Indeterminate (less than 50 tests)