Inorganic
Copper in your water
Health effects
Copper enters tap water mainly by corroding household plumbing and fixtures. Short-term high exposure causes stomach and intestinal distress; long-term excess can harm the liver and kidneys, particularly in people with certain genetic conditions.
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)
300 ppb
Federal legal limit (MCL)
1300 ppb
Source: EWG Tap Water Database & EPA MCLs · 2026
What removes Copper
We're still cataloging certified systems for Copper. A free water test is the fastest way to get a matched recommendation.
- 1
See your Water Score
Free, instant, no signup.
- 2
Get your custom fix-it plan
Exactly what your water needs.
- 3
Book your free 30-min test
No pitch, no nonsense.
Is Copper in your water?
Check your city's public record, then book a free 30-minute test to confirm what's in your home.