Well owner guides

Rust Stains From Well Water: Stop the Orange Staining

Orange rings in the toilet, brown streaks in the tub, whites that come out of the wash dingy orange: iron. The fix depends on which of its three forms your well is sending you, and the toilet tank tells you which.

The three forms of iron

Dissolved iron rides invisibly in clear water and oxidizes into orange when it meets air, which is why the stains bloom in toilets, on fixtures, and in laundry. Particulate iron arrives as rust specks, often from corroding pipes or a corroding casing. And iron bacteria are the living form: colonies that eat dissolved iron and build the slimy orange biofilm covered in our iron bacteria guide. Most stained houses in iron country have the first and third together, because the bacteria follow the food.

Match the fix to the form

Dissolved and particulate iron are filtration jobs: an iron filter or, for light amounts, a softener, plus fixing any corroding pipe the specks come from. A low pH that is dissolving your own plumbing shows up as a metallic taste alongside the stains. Iron bacteria are a cleaning job, and doing the cleaning first protects the filter you buy second: a colony in the well fouls new equipment in months.

Stains plus slime means the well needs cleaning first.

Answer a few questions and we pull your well's dimensions from your state's official well record, then pack a chlorine dioxide kit to those exact numbers from $399. A contractor charges $1,500 to $3,000 for the same cleaning.

Find my well See what's in the kit

Clean the source, then filter

The order that works: shock the well to kill the colony and strip its biofilm, following how to shock a well, then size filtration for the dissolved iron that remains. Our kit handles the first half with chlorine dioxide at the manufacturer's published 20 ppm shock dose, which penetrates biofilm per SMT's data instead of scorching its surface the way bleach does, and the included residual test proves the treatment held before you spend a dollar on filters.

Straight answers

What removes rust stains from well water fixtures?

For the stains already there, an oxalic-acid cleaner (the classic rust removers) beats bleach, which can actually set iron stains darker. For the stains that keep coming, the fix is upstream: treat the iron in the water, because scrubbing is a subscription until you do.

Why does my white laundry turn orange on well water?

Dissolved iron oxidizes in the wash and settles into fabric, and chlorine bleach makes it worse by oxidizing the iron faster. Wash with iron-safe detergent until the water is treated, and skip bleach on whites entirely.

How do I know if it is plain iron or iron bacteria?

Plain dissolved iron makes hard, thin rust stains and clear water that turns orange after standing. Iron bacteria add slime: fluffy orange buildup in the toilet tank, a sheen on standing water, and stains that come with gunk. The toilet tank is the honest witness, so lift the lid.

Will a water softener remove iron?

A softener removes small amounts of dissolved iron, roughly up to a few parts per million, and it does nothing for iron bacteria, which foul the softener's own resin bed. Heavier iron wants a dedicated iron filter, and living iron wants the well cleaned first.

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