"Filters containing activated carbon or reverse osmosis membranes have been shown to be effective at removing PFAS from water supplies" https://www.health.stat

"Filters containing activated carbon or reverse osmosis membranes have been shown to be effective at removing PFAS from water supplies" https://www.health.state.mn.us/communities/environment/hazardous/topics/pfashometreat.html https://www.health.state.mn.us/communities/environment/hazar... Some carbon filters make the claim on the label, some don't. The only difference is some companies pay to test for it, and then they can make the claim on the labeling, there is no actual difference in the filters.