Iron in Well Water: Orange Stains and How to Fix Them
Signs
Orange or rusty stains, metallic taste, and water that turns cloudy or orange after standing.
Limits
EPA's secondary limit and Health Canada's aesthetic objective are both 0.3 mg/L. These are about taste and staining, not health.
Types
Dissolved (ferrous) iron is clear when it comes out of the tap; oxidized (ferric) iron is already orange. Iron bacteria leave slimy red-brown deposits in toilet tanks. Ask the lab for both total and dissolved iron.
Treatment
Options include softeners for low dissolved iron, oxidizing filters, and aeration or chlorination plus filtration for higher levels. Iron bacteria may need shock chlorination.
Sources
- EPA: Secondary drinking water standards
- Health Canada: Guidelines for Canadian Drinking Water Quality, summary table
- Penn State Extension: Iron and manganese in private water systems
Questions
Is iron in well water dangerous?
Not at usual levels. It's an aesthetic problem. But treatment choice matters, so test before buying equipment.
Free well water safety checklist
15 family-friendly steps based on CDC and EPA guidance. Print it, keep it on the fridge, and know when to call a certified lab.
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