This is a much better Wikipedia article on the subject, one that actually explains why it's so dangerous: https://en.wikipedia.org/wiki/Perfluorooctanesulfonic_

This is a much better Wikipedia article on the subject, one that actually explains why it's so dangerous: https://en.wikipedia.org/wiki/Perfluorooctanesulfonic_acid https://en.wikipedia.org/wiki/Perfluorooctanesulfonic_acid There are major swaths of the country where PFAS and PFOS doesn't need to be defined: it's common knowledge and the terms see daily use among the general population as they drink filtered water to avoid ingesting it. But spelling out the name doesn't tell you the story, so if you're discounting the information because the name isn't spelled out, you're missing a major disaster slow-rolling the industrial Midwest right now. The long form of the name is the least interesting part of the article.