"You have evidence of pig-specific bacteria in surface waters, next to industrial swine operations," says Steve Wing, a researcher at the University of North Carolina.
Hanford workers described symptoms that include chronic headaches, respiratory problems and nerve damage.
Gregg Levine is a contributor to Truthout and the former managing editor of Firedoglake. For more of his work, please visit his site, capitoilette. Follow Gregg on Twitter: @GreggJLevine.