Crawford County · 6,505 residents · 3 water systems
17
Contaminants detected
6
PFAS compounds
280
Hardness (mg/L)
0
Above legal limits
4
Above health guidelines
Prairie Du Chien drinking water comes from groundwater wells. Based on the most recent monitoring data, 17 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 13 others. PFAS compounds have been detected at trace levels in Prairie Du Chien water. Water hardness is 280 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.
Contaminants detected in Prairie Du Chien water
17 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Prairie Du Chien tap water meets EPA legal standards (Maximum Contaminant Levels). However, 4 contaminants are present above independent health guidelines, which are often stricter than legal limits. 17 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Trichloroethylene. View the detailed report for each water system to see specific levels and how they compare to both legal limits and health guidelines.
What contaminants are in Prairie Du Chien water?
Monitoring has detected 17 contaminants in Prairie Du Chien's water supply: Lead, Nitrate, Arsenic, Copper, Trichloroethylene, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Selenium, PFHpA (Perfluoroheptanoic Acid), Toluene, Styrene, Thallium, Barium, Fluoride, Di(2-ethylhexyl) phthalate, PFBA (Perfluorobutanoic Acid). Additionally, 6 PFAS compounds have been detected at trace levels. 4 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Prairie Du Chien water have PFAS?
Yes. 6 PFAS compounds have been detected in Prairie Du Chien's water supply at trace levels. PFAS are sometimes called "forever chemicals" because they do not break down in the environment. The EPA has set Maximum Contaminant Levels for several PFAS compounds. View the detailed report for specific concentrations.
Is Prairie Du Chien water hard?
Yes. Prairie Du Chien water has a hardness of 280 mg/L (very hard). Hard water is not a health concern but can cause scale buildup in water heaters and appliances, reduce soap effectiveness, and leave mineral deposits. Water softeners or conditioning systems can address hardness.
Where does Prairie Du Chien get its drinking water?
Prairie Du Chien's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Wisconsin DNR and EPA requirements before distribution. Prairie Du Chien is served by 3 water systems, the largest being PRAIRIE DU CHIEN WATERWORKS (serving 6,005 people).
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