The U.S. Geological Survey has found that nearly half of the country’s tap water likely contains at least one type of PFAS, also known as “forever chemicals.” PFAS are found in everyday products such as personal care items, clothing, cleaning products, as well as food. They have been linked to a host of environmental and health problems, including certain kinds of cancer. Studies have shown nearly all Americans have “detectable levels” of PFAS in their blood.