Inorganic
Chromium-6 (Hexavalent Chromium) in your water
Health effects
Chromium-6 is the more toxic form of chromium, entering water from industrial pollution and from natural rock. Drinking it over time is linked to an increased risk of cancer. There is no separate federal limit - it is covered only under the broader total-chromium standard.
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)
0.02 ppb
Federal legal limit (MCL)
No federal limit set
Source: EWG Tap Water Database & EPA MCLs · 2026
What removes Chromium-6 (Hexavalent Chromium)
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
APEC Water Systems · Reverse Osmosis Systems
APEC RO-90 Ultimate 5-Stage RO (90 GPD)
- gpd
- 90
- stages
- 5
- membrane
- FILMTEC TFC
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
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Is Chromium-6 (Hexavalent Chromium) in your water?
Check your city's public record, then book a free 30-minute test to confirm what's in your home.