What is the EPA limit for PFAS in drinking water?
The EPA's limit is 4 ppt (ng/L) for PFOA and for PFOS. All six limits set in April 2024 remain in effect as of October 2026: PFOA and PFOS 4.0 ppt each; PFHxS, PFNA and HFPO-DA (GenX) 10 ppt; and a Hazard Index of 1 for mixtures. Public water systems must comply by April 26, 2029. In May 2026 EPA proposed letting utilities extend the PFOA and PFOS deadline to April 2031 and rescinding the other four limits; those proposals are not final. Filter certifications for PFAS (NSF/ANSI 53 and 58) currently test reduction to below 20 ppt combined, not to the 4 ppt limits; EPA says current certifications do not yet show removal down to those levels.
Filters certified for PFAS reduction (29)
- A. O. Smith AO-US-200 2-Stage Under Sink (Under-sink filter, NSF/ANSI 53, $140)
- A. O. Smith RO with Microbial Boost AO-US-RO-MB-4000 (Under-sink reverse osmosis, NSF/ANSI 53, —)
- APEC ROTL-A1000 (Under-sink reverse osmosis, NSF/ANSI 58, $599)
- Aquasana Claryum 2-Stage (Under-sink filter, NSF/ANSI 53, $250)
- Aquasana Claryum 3-Stage (Under-sink filter, NSF/ANSI 53, $350)
- Aquasana Claryum 3-Stage Max Flow (Under-sink filter, NSF/ANSI 53, $450)
- Aquasana Claryum Direct Connect (Under-sink filter, NSF/ANSI 53, $250)
- Aquasana Clean Water Machine (Countertop filter, NSF/ANSI 53, $400)
- Aquasana HealthShield whole-house (Whole-house, NSF/ANSI 53, $4,198)
- Aquasana SmartFlow RO (Under-sink reverse osmosis, NSF/ANSI 53, $480)
- AquaTru Carafe (Countertop reverse osmosis, NSF/ANSI 53, $375)
- AquaTru Classic (Countertop reverse osmosis, NSF/ANSI 53, $475)
- Culligan Scout gravity system (2.25 gal) (Countertop filter, NSF/ANSI 53, $230)
- Culligan Venture gravity system (3 gal) (Countertop filter, NSF/ANSI 53, $275)
- Multipure Aqualuxe (Under-sink filter, NSF/ANSI 53, $1,325)
- Multipure Aquaperform (Under-sink filter, NSF/ANSI 53, $765)
- Multipure Aquapremier (Under-sink filter, NSF/ANSI 53, $965)
- Ninja HydraSense (Countertop filter, NSF/ANSI 53, $250)
- Pentair Everpure H-1200 (Under-sink filter, NSF/ANSI 53, —)
- PUR Faucet filter (basic, horizontal) (Faucet-mount, NSF/ANSI 53, —)
- PUR PLUS 11-cup pitcher (Pitcher, NSF/ANSI 53, —)
- PUR PLUS 30-cup dispenser (Dispenser, NSF/ANSI 53, —)
- PUR PLUS faucet filter (Faucet-mount, NSF/ANSI 53, —)
- SpringWell Lead & Cyst Removal System (Whole-house, NSF/ANSI 53, $3,220)
- Waterdrop G3P600 (Under-sink reverse osmosis, NSF/ANSI 53, $539)
- Waterdrop G3P800 (Under-sink reverse osmosis, NSF/ANSI 53, $999)
- ZeroWater 10-cup pitcher (Pitcher, NSF/ANSI 53, $38)
- ZeroWater 32-cup Ready-Read dispenser (Dispenser, NSF/ANSI 53, $45)
- ZeroWater 52-cup Ready-Read dispenser (2 filters) (Dispenser, NSF/ANSI 53, $65)
See which water filters remove PFAS for the full list with listings and yearly costs.
Sources
Last checked 2026-10-23.