I got this idea while traveling to the Midwest to visit some ailing relatives. Seems that there are numerous contaminated ponds in the area due to a variety of manufacturing and industrial businesses. Heavy metals and a bunch of other nasty chemicals are found in the soil and waters of the area.
Just how many of us swam in these places before we knew any better? I wonder about my experiences.
Anyway, I think this will be a future paper and probably submitted to the NERR 2012 conference.