There are hundreds of Poly fluoryl aklyl substances. Health studies have only confirmed multiple ill effects on mice. I'm not a health expert, so I'm not sure of the absolute link between animal and human health. It s beleived that some PFAS substances are worse than others. I have heard of the 1965 incident. However, the US government knew about negative health effects in cows since at least the 1970s. Now all of a sudden they have a hard on to eradicate all PFAS. We did ban PCBs and chlorofluor-carbons, but there was more solid evidence of the health effects on humans. If PFAS is as bad as the EPA is telling us, why are they not being banned outright. Is it possible the government does not want ANY industrial manufacturing in the United States?