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Your Well?

Common Well Water Issues in South Central Wisconsin

Though most well water is perfectly safe to drink, it may contain some potentially dangerous contaminants like nitrates or arsenic. These chemicals can’t be detected without a water test.

Learn about the common well water issues in your area.

Hard Water

Hard water leaves behind minerals that clog up appliances, leave stains and make your skin dry and your clothes dull and scratchy.

Total Hardness (mg/l as CaCO₃)

AVERAGE BY COUNTY:

Nitrates

Nitrates are an invisible and potentially harmful impurity that can’t be detected without a water test and can cause “Blue Baby” syndrome—a decrease in the oxygen-carrying capacity of hemoglobin, which is often fatal.

Nitrates (mg/l as N)

AVERAGE BY COUNTY:

Arsenic

Arsenic is a naturally occurring element found in soil and bedrock throughout Wisconsin. Under certain conditions, arsenic can be released into groundwater and enter water wells.

Nitrates (ug/l (ppb))*

AVERAGE BY COUNTY:

EPA standards for maximum arsenic contaminant levels is 10 ppb*.

*1 ppb (parts per billion) is one part concentration per one billion parts. For example: A single drop of ink added to gasoline in a large tanker truck would be an ink concentration of 1 ppb. ppb is one of the smallest measurements of concentration.

Source: Wisconsin Department of Natural Resources link to https://dnr.wi.gov/

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