Planet money had a really good episode about the romaine salmonella outbreak. The problem was that the water supply was tainted because it would go through prot

Planet money had a really good episode about the romaine salmonella outbreak. The problem was that the water supply was tainted because it would go through protected federal land and the feces of the animal grazing on the land would get into the water supply. I wonder if this is the case for the onions.