The PFA's aren't largely concentrated in the urine/feces, they're in the sewage water (from people flushing/washing things down the drain/chemical runoff). If

The PFA's aren't largely concentrated in the urine/feces, they're in the sewage water (from people flushing/washing things down the drain/chemical runoff). If the issue was "people are so full of PFA's that their urine/feces contain so much they're contaminating the planet" the problem would be too far advanced, right? Like if your body was so radioactive that standing near you caused people to develop cancer, you probably shouldn't worry about getting cancer yourself, you're already fucked.