> In addition, the testing detected two PFAS compounds that, because of their known risks, are no longer manufactured in the U.S. One of them, PFOA, was the mos

> In addition, the testing detected two PFAS compounds that, because of their known risks, are no longer manufactured in the U.S. One of them, PFOA, was the most frequently detected compound, and the other, PFOS, was the fifth most common. > Finally, the test for specific PFAS found that those 30 compounds accounted for only a tiny fraction—less than 1 percent—of the organic fluorine found in the products. That shows that the vast majority of PFAS are not identified with commonly used tests Could they be chemical synthesis byproducts of legal PFAS chemicals?