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The Effects of Iron in Water

Although iron is one of the earth's most abundant resources, when too much of it is present in drinking water, it poses a few concerns. While not considered dangerous to your health, water too rich in iron may still require treatment to improve the taste.

  1. Forms

    • Typically, iron exists in water in two different forms, soluble ferrous or insoluble ferric. Soluble ferrous iron is dissolved in the water and thus clear, while insoluble ferric iron will be very visible.

    Problems

    • Excessive amounts of iron in water (more than ten parts per million) will give food and drink a very unpleasant, metallic flavor. Additionally, water with too much iron could stain clothing and appliances if spilled.

    Appearance

    • If excessive iron is found in water, it will contain a reddish tint, indicating that the iron is not dissolved.

    Health Concerns

    • Iron is not a hazard to health, so there are no health-related risks involved when water contains too much iron. It is classified as a secondary (or aesthetic) contaminant by the Department of Natural Resources because it impacts taste and appearance in a negative way.

    Treatment

    • After doing a water test to determine that there is a problem with iron, there are many treatment options available, such as aeration, filtration, softening and ozonation.

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