The county that I live in was part of the lead mining district of Illinois, Iowa and Wisconsin. Between 1825 and 1955 tons of lead came from surface and underground mines. To this day you can find "float" lead on the ground surface and along spring and stream banks. Livestock are grazing on some of this land and drinking from the streams. People catch and eat fish from these streams. I have done the same for 55 years.
The area has not been determined a health risk and no abnormalities have been found in humans, livestock, birds, reptiles, fish, etc.
