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

 

EPA standards for maximum nitrate contaminant level is 10mg/L.

 
 

 

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.

 
 
 

Arsenic (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