Best Water Filters for PFAS Removal

Reverse osmosis removes 98–99.9% of PFAS compounds including PFOA, PFOS, PFBS, and GenX. It is the most effective water treatment technology available for PFAS removal and is recommended by the EPA for households with elevated PFAS levels.

Yes — but only if certified. Look for NSF 53 or NSF P473 certification specifically. The Clearly Filtered Pitcher achieves 99.5% PFAS removal. Standard Brita and PUR pitchers are not certified for PFAS and should not be relied upon for contaminated water.

NSF P473 is a protocol that specifically tests a filter for PFOA and PFOS removal under real-world conditions. It is more rigorous than a generic NSF 53 listing for PFAS purposes. Filters certified to NSF P473 have proven their PFAS removal claims through independent laboratory testing.

The EPA's 2024 Maximum Contaminant Level for PFOA and PFOS is 4 parts per trillion — essentially zero. Because PFAS accumulate in the body over time, experts recommend reducing exposure even at low measured levels, particularly for children and pregnant women.

Activated carbon filters remove 90–99.5% of PFAS without wasting water and retain healthy minerals. Reverse osmosis removes 98–99.9% of PFAS but produces some wastewater and removes all minerals along with contaminants. For high-risk water, RO is preferred. For moderate or low risk, NSF-certified carbon filters are effective and simpler to install.

Whole-house systems remove 90–93% of PFAS, which reduces your overall exposure through bathing and laundry. For drinking and cooking, pairing a whole-house system with a dedicated under-sink RO or certified pitcher filter is recommended to achieve the highest possible removal rates.