This new volume provides a timely study on the environmental challenges from a specific class of perfluorinated chemical compounds PFCs that are now being recognized as a worldwide health threat. Recent studies report that levels of classes of PFCs known as polyfluoroalkyl and perfluoroalkyl PFASs exceed federally recommended safety levels in public drinkingwater supplies for 6 million people in the United States and that as many as 100 million people could be at risk from exposure to these ch