in number 3, did you mean “herbicides”
The thing is, I understand that some farmers were doing that, but some others were simply trying to grow soybeans, and they didn’t use herbicides, but Monsanto successfully sued them into never saving “soybean” seed ever again.
Lead culinary water pipes (or lead soldier) is a problem, but lead shower pans (that affect the sewer water) are the preference in many USA cities.