GenX (HFPO-DA)
Category: pfas
EPA MCL
10 ppt
Status
EPA Regulated
NSF Standard
NSF/ANSI 53, NSF/ANSI 58
Health Effects
Associated with liver toxicity, kidney effects, developmental toxicity, and cancer in animal studies. Developed as a replacement for PFOA but raises similar health concerns.
Where It Comes From
Short-chain PFAS compound used as a replacement for PFOA in fluoropolymer manufacturing. A processing aid in production of non-stick and fluoropolymer products.
Where It's Commonly Found
Communities near fluorochemical manufacturing plants, notably in North Carolina (Fayetteville area) and other industrial zones. Less widespread than PFOA/PFOS but increasingly detected.
Detected in hundreds of public water systems under UCMR 5 monitoring. Note: EPA announced intent in May 2025 to rescind the MCL for GenX while keeping PFOA/PFOS limits in place; regulatory status may change.
How to Remove It
Effective Technologies
- reverse osmosis
- ion exchange
- nanofiltration
- activated carbon
Does NOT Remove It
- UV
- water softener
- mechanical filtration
Filters That Address GenX (HFPO-DA)
5 filters in our database list GenX (HFPO-DA) reduction.
Epic Water Filters Nano
pitcher
$82
$138/yr filters
Price checked Apr 2026
Berkey Big Berkey
gravity
$367
$10/yr filters
Price checked Apr 2026
ProOne Big+
gravity
$183.96
$126.32/yr filters
Price checked Apr 2026
AquaTru Classic
countertop
$449
$114/yr filters
Price checked Apr 2026
AquaTru Carafe
countertop
$349
$104/yr filters
Price checked Apr 2026
Official Sources
Related Contaminants
Learn More
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Enter Your ZIP Code →Informational guidance based on EPA data and NSF standards - not medical advice.