Iron & Staining
Those orange-brown stains on your sinks, tubs, and laundry aren’t dirt — they’re iron. Even trace amounts leave a lasting mark. Here’s what’s causing it and how to get rid of it for good.
Where Does Iron Come From?
Iron is one of the most abundant elements in the earth’s crust — which means it finds its way into groundwater easily. As rainwater seeps through iron-bearing rock and soil, it picks up dissolved iron and carries it into your well or water supply.
Northeast Iowa’s geology makes iron contamination especially common. Private well owners are most frequently affected, though iron can show up in municipal supplies too.
The EPA’s recommended limit for iron in drinking water is 0.3 mg/L (0.3 ppm) — and even at that level, staining and taste problems are already noticeable. Many Iowa wells test significantly higher.
Iron that’s dissolved in the water — you can’t see it when the water first comes out of the tap. It’s “clear water iron.” But once exposed to air or heat, it oxidizes and turns that familiar orange-brown color.
Iron that’s already oxidized — visible as rust-colored particles in the water. It settles and stains quickly. Often appears as reddish-brown sediment in toilet tanks and water heaters.
Where You’ll See Iron’s Damage
Iron leaves its mark everywhere water flows, sits, or evaporates in your home.
Toilets & Tanks
Orange or brown rings inside the bowl that scrubbing can’t remove. Rust-colored buildup inside the tank on the float, flapper, and walls. Staining reappears within days of cleaning.
Sinks & Tubs
Persistent orange-brown stains along drains and around faucets. Porcelain and enamel surfaces are especially prone to deep staining that becomes permanent over time if not addressed.
Laundry
Rust stains on white fabrics that appear after washing. Yellowing of light-colored clothing. Staining that gets set in permanently by the dryer’s heat if not caught early.
Yard & Irrigation
Orange staining on sidewalks, driveways, and siding from irrigation systems. Rusty streaks on fences and outdoor fixtures. Staining that’s nearly impossible to remove once it sets.
Taste & Smell
A metallic or blood-like taste in drinking water and ice. The flavor affects coffee, tea, and anything cooked with tap water. Even low iron levels that don’t stain can still affect taste.
Appliances & Plumbing
Iron deposits accumulate inside water heaters, dishwashers, and washing machines — clogging valves, fouling heating elements, and shortening appliance life.
Iron Bacteria — When Iron Gets Worse
Iron bacteria are naturally occurring microorganisms that feed on iron in the water. They’re not considered a health risk on their own, but they create a slimy, gelatinous buildup inside pipes and fixtures that’s difficult to remove and causes its own set of problems.
Signs of iron bacteria include a reddish-brown slime in toilet tanks, a musty or swampy odor from faucets, and staining that seems heavier than the iron level alone would cause.
Iron bacteria are particularly common in well water systems. Addressing them usually requires a combination of filtration and periodic disinfection — something our team can advise on during a free water test.
Signs You May Have Iron Bacteria
- Reddish-brown slime inside toilet tank
- Musty, swampy, or oily odor from tap
- Staining worse than iron level suggests
- Clogged well screens or pump components
- Slippery feel to water
How We Treat Iron Problems
The right treatment depends on the type of iron, the concentration, and whether other issues like hardness or bacteria are present. A water test tells us exactly what we’re dealing with.
Air Induction Filters
The EVFE and EVS use air to oxidize iron before filtering it out — chemical-free and highly effective for ferrous iron and sulfur. No additives, no salt, just clean water.
Learn More →Evolve Conditioners
The EV1 and EV2 use Crystal-Right™ media to simultaneously soften water and remove iron and manganese in a single unit — ideal when hard water and iron coexist.
Learn More →Water Softeners
For low to moderate ferrous iron levels, a quality water softener with the right resin can remove dissolved iron along with hardness minerals in a single step.
Learn More →Tired of the Stains?
A free water test will show us exactly how much iron is in your water, what type it is, and what solution will clear it up for good. No cost, no obligation, no guessing.