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PFASs (perfluoroalkyl and polyfluoroalkyl substances) are a diverse group of manufactured compounds frequently used as surfactants in industrial, consumer, military, and firefighting applications across the United States, such as Aqueous Film Forming Foam (AFFF) firefighting products, textiles, carpeting, metal plating, paper food packaging, cleaning products, coating additives, and pesticides. PFAS compounds exhibit distinctive chemical characteristics that make them stable in the environment and resistant to degradation, allowing them to bioaccumulate in soil, sediment, groundwater, and animal tissue over time. The presence of PFASs has been demonstrated in surface water, sewage water groundwater and drinking water as well as in rain and snow. Together with the dispersion of volatile precursor molecules, water is considered to be one of the main paths of distribution of PFASs. Some scientific studies suggest that certain PFAS may affect different systems in the body. Although more research is needed, some studies in people have shown that certain PFAS may: affect growth, learning and behavior of babies and older children; lower a woman's chance of getting pregnant; interfere with the body's natural hormones; increase cholesterol levels; affect the immune system; increase the risk of cancer. So, different countries have certain requirements for the content of PFAS in water. For example, according to Vermont's health advisory level, the sum of five PFAS should not exceed 20 ppt (parts per trillion) in drinking water.
As a global leading PFASs testing company, Alfa Chemistry provides incredible services and credible results. Alfa Chemistry is your one-stop-shop laboratory to test heavy metals in water according to EPA Method 537.