Multiple technologies have proven capable of removing PFAS from drinking water, including the following list of treatments proven as effective by the EPA:
Granular Activated Carbon (GAC) – Chemicals like PFAS stick to the small pieces of carbon as the water passes through.
Powdered Activated Carbon (PAC) – The carbon is powdered and is added to the water. The chemicals then stick to the powdered carbon as the water passes through.
Ion Exchange Resins – Small beads (called resins) are made of hydrocarbons that work like magnets. The chemicals stick to the beads and are removed as the water passes through.
Nanofiltration and Reverse Osmosis – A process where water is pushed through a membrane with small pores. The membrane acts like a wall that can stop chemicals and particles from passing into drinking water.
(List from the EPA’s Treating PFAS in Drinking Water webpage)