Iron in well water treatment: $2,495–$3,495 for a filter
Iron above 0.3 mg/L stains fixtures and tastes metallic, per EPA. Virginia Cooperative Extension matches treatment to the combined iron and manganese level: a softener up to 5 mg/L, aeration and filtration at 5 to 10, an oxidizing filter up to 15. An iron filter costs $2,495–$3,495 before installation, per supplier Mid Atlantic Water.
1,Key figures
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What the limits mean
EPA's secondary standard for iron is 0.3 mg/L and for manganese 0.05 mg/L. They are nuisance limits that EPA does not enforce: above them, iron leaves rusty color, sediment and reddish-orange stains, and manganese leaves black-brown stains and a bitter taste. Virginia Cooperative Extension notes that water below these levels can still stain.
Treatment by level
| Combined iron and manganese | Treatment |
|---|---|
| Up to 3 mg/L | Phosphate feed (keeps it dissolved, does not remove it) |
| 5 mg/L or less | Ion-exchange water softener |
| 5 to 10 mg/L | Aeration followed by filtration |
| Up to 15 mg/L | Oxidizing filter |
| Over 10 mg/L | Chemical oxidation, then filtration |
Extension says to check a softener maker's maximum iron rating before relying on it, and advises against aeration where iron bacteria or organic complexes are present. The chemical route is rare in homes.
Sources2
What it costs
Mid Atlantic Water lists iron filters at $2,495–$3,495 and softeners at $1,495–$2,495, equipment only. Plumber installation runs $500–$1,200. We found no agency price list for iron treatment.
Sources3
Common questions
Will a water softener remove iron?
At low levels. Virginia Cooperative Extension lists an ion-exchange softener for combined iron and manganese of 5 mg/L or less, within the maker's rating.
Is iron in well water a health risk?
EPA treats it as a nuisance contaminant. Its 0.3 mg/L limit is a secondary, unenforced standard set for color, taste and staining.
For the cost of a finished well in your state, see what drilling a well costs.
Sources
- Secondary Drinking Water Standards: Guidance for Nuisance Chemicals , U.S. EPA. Accessed November 9, 2026. Last updated May 26, 2026
- Iron and Manganese in Household Water (Pub. 442-656) , Virginia Cooperative Extension, Virginia Tech. Accessed November 9, 2026. First published Feb 2020; last reviewed July 2025 (listed Aug 1, 2025)
- Whole house water filter system cost: what you'll actually pay in 2026 , Mid Atlantic Water (online supplier). Accessed November 9, 2026. Prices dated October 2, 2026; updated November 5, 2026
How these figures are built: methodology. Updated November 2026.