PFAS contamination wasn't really a thing on anyone's radar until relatively recently. For all we know, the the critera being used for "is this suitable as fert

PFAS contamination wasn't really a thing on anyone's radar until relatively recently. For all we know, the the critera being used for "is this suitable as fertilizer" did not go beyond "has it got what plants crave", and "and also doesn't contain poison" didn't make the list.