PFAS "Forever Chemicals" Explained
What PFAS are, why the EPA now limits them, and which filters remove them.
What are PFAS?
PFAS are thousands of man-made chemicals used in non-stick pans, firefighting foam and waterproof fabrics. They barely break down, so they build up in water and in people.
Why they matter
Studies link some PFAS to higher cholesterol, immune effects and certain cancers. In 2024 the EPA set the first national drinking-water limits for six PFAS.
Which filters work
Reverse osmosis removes the most. Good carbon block filters certified to NSF/ANSI 53 or 473 for PFOA/PFOS also work. Basic pitchers without that certification may not.
Change filters on time
A worn-out carbon filter stops catching PFAS. Follow the replacement schedule — it's the most common mistake.
Not sure which filter fits?
Take the Filter Finder