 With grain impacted by water, Herberg says you can try to get the good stuff off the top. Get a good sample and have it graded, including tested for mycotoxins, because even though it was sitting above the flood water, it's been very humid, and we could have had mold growth and toxin production in it. He says the Iowa Department of Agriculture and Land Stewardship will notify producers of grain salvage situations. However, the grain in the water exposed to mycotoxins, heavy metals, and sewage needs to be disposed of.