Orange stains in the toilet, rusty laundry, water that tastes like metal. Iron is one of the most common problems in North Carolina wells, and it's fixable.
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Quick answer
With an iron filter installed ahead of the water softener. Water that comes out clear but stains orange carries dissolved ferrous iron, which oxidizes when it meets air. A softener removes only small amounts, and iron fouls its resin over time. Iron is mainly an aesthetic problem, but manganese often comes with it, so test first.
Iron is one of the most common complaints from North Carolina well owners. As groundwater moves through soil and rock, it dissolves iron and manganese along the way, and the clay-heavy soils across the Piedmont carry plenty of both. NC DHHS lists iron and manganese among the contaminants many North Carolina wells have too much of.
Manganese usually travels with iron. NC State researchers found that over a million people across the southeastern Piedmont use well water with manganese above recognized water-quality standards, with the highest levels in shallower wells and clustered over the Carolina Slate Belt.
What you see at the tap tells you what kind of iron you have, and that decides the fix.
The iron is dissolved, so water comes out clear and turns orange or brown after sitting in a glass or toilet tank. This is the most common type in NC wells.
The iron has already oxidized into particles before it reaches you. Water looks cloudy or rusty straight from the faucet.
Bacteria that feed on iron leave slimy deposits in toilet tanks and a musty or swampy smell. They need to be treated at the well, not only filtered.
Black or dark brown stains on fixtures and laundry, and black specks in the water, usually mean manganese rather than iron.
| Level | What it means |
|---|---|
| Iron above 0.3 mg/L | EPA secondary standard. Above this you start to see orange staining and taste metal. |
| Manganese above 0.05 mg/L | EPA secondary standard. Black staining and bitter taste begin. |
| Manganese above 0.3 mg/L | EPA lifetime health advisory level for drinking water. |
Beyond stains, iron builds up inside pipes, water heaters, dishwashers and washing machines, clogs well pumps and pressure tanks, and turns white laundry orange. It also fouls water softeners, which are not built to handle more than small amounts of it.
Our Iron & Sulfur Filter uses air injection to oxidize dissolved iron, manganese and sulfur into particles, traps them in the media bed, and flushes them out automatically during backwash. No chemicals. It handles up to 15 ppm iron, 5 ppm manganese and 5 ppm sulfur.
Most wells with iron have other problems too, like hardness, sediment or bacteria. Our Well Water System puts iron removal, sediment filtration, softening and UV sterilization in one install.
Iron itself is mainly an aesthetic problem: stains, metallic taste and damage to plumbing and appliances. Manganese is different. Above 0.3 mg/L, the EPA advises against long-term drinking, and it often shows up alongside iron. A test tells you which you have.
Only small amounts of dissolved iron, and it fouls the softener resin over time. Wells with noticeable iron need an iron filter ahead of the softener.
That is ferrous (dissolved) iron. It is invisible until it meets air, then oxidizes into the orange particles you see in sinks, toilets and laundry.
We test for iron free during an in-home visit. NC DHHS also recommends a lab test for metals every two years through your county health department or a certified lab.
We test your iron and manganese free, then install the filter that fits. Lifetime warranty.