If bioaccumulation hasn't posed a problem yet, it doesn't seem to be too much of a concern. The dose rate near Chernobyl has fallen 2 orders of magnitude. Fur

If bioaccumulation hasn't posed a problem yet, it doesn't seem to be too much of a concern. The dose rate near Chernobyl has fallen 2 orders of magnitude. Further, now the vast majority of the activity is Cs-137, which is excreted pretty quickly. Further, the waste is getting buried and further removed from the food chain (though Russia recently stirred up soil there, which isn't ideal).