https://www.health.state.mn.us/communities/environment/hazardous/topics/pfashometreat.html PFAS and Home Treatment of Water If you have concerns about your health, you can take steps to reduce your potential exposure to PFAS. Filters containing activated carbon or reverse osmosis membranes have been shown to be effective at removing PFAS from water supplies. All water treatment units require regular maintenance to work properly. Water treatment units that are not properly maintained will lose their effectiveness over time. Other types of common water treatment systems, such as water softeners or iron filtration systems, are not likely to remove PFAS. Boiling water will not remove PFAS. While many homes have whole-house water softening or iron filtration systems, sampling data indicate that those systems do NOT remove PFAS.
US has banned PFAs and related chemicals in November 2016. In November 2023, EPA will have a drinking water maximum contamination level for PFAs. China has not banned PFAs and its related chemicals yet...