I think there are a lot of ongoing monitoring programs that would include, say, cadmium, as you mentioned, right? Drinking water is tested, commonly, and for those contaminants, the drinking water guidelines are very well established.
I would assume that the health authorities or whoever is monitoring in a long-term program should have access to that data. One thing, of course, is that often in this country what we hear about in the news is lead. That's not necessarily due to military operations, but it gives you an idea of those monitorings that are ongoing.