A number of studies have been conducted to determine the efficiency of filtration devices, for point-of-use filters. The results of these studies have shown that point-of-use filters can remove trace organic compounds. Based on these studies, there currently are three general types of filtration systems that can potentially can reduce PFAS levels in water, if properly maintained: granulated activated carbon – either in refrigerator, faucet, or pitcher filters and some filtration systems installed on your water line; reverse osmosis; or granulated activated carbon used with reverse osmosis. However, it is important to ensure the systems are maintained according to the manufacturer and that your water is tested.
Global public health organization NSF International has developed a test method and protocol to verify a water treatment device’s ability to reduce perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) to below the health advisory levels set by the U.S. Environmental Protection Agency (EPA). Consumers can find NSF International-approved devices by visiting: http://info.nsf.org/Certified/DWTU/
Click on “reduction devices” at the bottom of the page for PFOS and PFOA).
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