i can certainly believe that composting is amazing at dealing with all sorts of contaminants, but as @hedgehog sorta points to, i'd be worried that the sheer va

i can certainly believe that composting is amazing at dealing with all sorts of contaminants, but as @hedgehog sorta points to, i'd be worried that the sheer variety of contaminants you could get at a larger population level would present some significant unknown/unforeseeable risks. on a smaller scale, like a single family/household, i'd expect those risks would be more ascertainable and mitigatable.