Iron in Water
Reddish-brown staining on fixtures and laundry is the classic sign of iron in the water.
Short answer: Iron typically causes reddish-brown staining and a metallic taste. It's most common on private wells but can also appear in aging public-system plumbing. It's generally a nuisance issue addressed through targeted filtration, not a health emergency.
Common signs
- Reddish-brown staining on sinks, tubs, and toilet tanks
- Rust-colored spots on laundry
- Metallic taste
- Sediment buildup in aerators and appliances
Step-by-step
- Test for iron to confirm the level rather than assuming from staining color alone.
- If you're on a private well, see Private Wells for testing guidance.
- If you're on public water, check your CCR and consider whether the issue is house-wide or limited to older interior plumbing.
- Choose treatment (oxidation/filtration, water softening) matched to the level and form of iron found.
Common mistakes
- Assuming staining color alone confirms iron without testing
- Buying treatment before understanding whether the source is your plumbing or the water supply
Official sources
- U.S. EPA secondary drinking-water standards
- NJ-certified laboratories for testing
Related
Is iron in water a health risk?
For most households, iron is an aesthetic (nuisance) concern affecting taste, color, and staining rather than an acute health risk. Test to confirm your specific level.
This page provides general educational information and is not medical or laboratory advice.
Last reviewed: 2026-07-11. Report a correction.