Food – for example in fish caught from water contaminated by PFAS and dairy products from livestock exposed to PFAS.Manufacturing or chemical production facilities that produce or use PFAS – for example at chrome plating, electronics, and certain textile and paper manufacturers.Such foams are used in training and emergency response events at airports, shipyards, military bases, firefighting training facilities, chemical plants, and refineries. Fire extinguishing foam - in aqueous film-forming foams (or AFFFs) used to extinguish flammable liquid-based fires.Soil and water at or near waste sites - at landfills, disposal sites, and hazardous waste sites such as those that fall under the federal Superfund and Resource Conservation and Recovery Act programs.Drinking water – in public drinking water systems and private drinking water wells.PFAS can be present in our water, soil, air, and food as well as in materials found in our homes or workplaces, including: One common characteristic of concern of PFAS is that many break down very slowly and can build up in people, animals, and the environment over time. PFOA and PFOS have been replaced in the United States with other PFAS in recent years. Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS), for example, are two of the most widely used and studied chemicals in the PFAS group. There are thousands of different PFAS, some of which have been more widely used and studied than others. PFAS are a group of manufactured chemicals that have been used in industry and consumer products since the 1940s because of their useful properties. Per- and Polyfluoroalkyl Substances (PFAS) Are a Group of Manufactured Chemicals
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