PFAS
PFAS (combined) in your water
Health effects
PFAS are a large family of synthetic "forever chemicals" that resist breaking down and accumulate in people and the environment. As a group they are associated with cancer, immune suppression, hormone disruption, and developmental harm. Several individual PFAS now carry federal drinking-water limits.
The guideline vs. the legal limit
The federal legal limit is the maximum allowed by law. The EWG health guideline is what independent scientists consider safe — it is often far stricter.
Health guideline (EWG)
1 ppt
Federal legal limit (MCL)
No federal limit set
Source: EWG Tap Water Database & EPA MCLs · 2026
What removes PFAS (combined)
Waterdrop · Reverse Osmosis Systems
Waterdrop G3P800 Tankless RO (800 GPD)
- gpd
- 800
- stages
- 7
- tankless
- true
GE Appliances (Haier) · Reverse Osmosis Systems
GE GXRV40TBN 5-Stage Reverse Osmosis
- gpd
- 14.76
- stages
- 5
- antimicrobial
- true
A.O. Smith · Reverse Osmosis Systems
A.O. Smith AO-US-RO-4000 4-Stage RO
- gpd
- 50
- stages
- 4
- fluoride pct
- 99
Aquasana · Reverse Osmosis Systems
Aquasana OptimH2O Reverse Osmosis + Claryum
- gpd
- 35
- stages
- 3
- fluoride pct
- 95
Aquasana · Reverse Osmosis Systems
Aquasana SmartFlow Reverse Osmosis
- stages
- multi
- tankless
- true
- efficiency
- high-recovery
Home Master (Perfect Water) · Reverse Osmosis Systems
Home Master TMAFC-ERP Artesian Full Contact RO
- gpd
- 75
- stages
- 7
- membrane
- DOW 50gpd
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Is PFAS (combined) in your water?
Check your city's public record, then book a free 30-minute test to confirm what's in your home.