Iron in Water - 8 Common Water Problems—and Their Cures - Bob Vila
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Iron (and Manganese)
Problem: Iron and manganese, often found in ground water supplies, give water a cloudy or rusty appearance. They also cause dark brown or rust-colored stains on plumbing fixtures, cookware and laundry, and have a metallic or astringent taste.
Management: A conventional water softener can remove up to 5 PPM of ferrous iron, but some have specialized iron removers that target this element. Oxidizing filters and colloidal iron filters provide even heavier duty coverage.