PFAS continues to make headlines and cause concern because these compounds have been detected in drinking water supplies across the country. The Agency for Toxic Substances and Disease Registry has determined that PFAS accumulation in the human body can have adverse health effects. In response, to provide Americans, including the most sensitive populations, with a margin of protection from a lifetime of exposure to PFOA and PFOS from drinking water, U.S. Environmental Protection Agency (EPA) has established the health advisory levels at 70 parts per trillion. In addition, the EPA has set a drinking water lifetime health advisory limit of 70 parts per trillion (ppt) for PFOA and PFOS. These are some of the lowest limits ever established for a contaminant.