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Water Quality Report

Wisconsin Dells, WI

Columbia County · 3,507 residents · 5 water systems

22

Contaminants detected

4

PFAS compounds

120

Hardness (mg/L)

3

Above legal limits

10

Above health guidelines

Wisconsin Dells drinking water comes from groundwater wells. Based on the most recent monitoring data, 22 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 18 others. PFAS compounds have been detected at trace levels in Wisconsin Dells water. Water hardness is 120 mg/L (moderately hard), which is within a typical range for the region.

Contaminants detected in Wisconsin Dells water

Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.

Lead0.0017 / 0.015 mg/L
11% of EPA limit
Nitrate2.9 / 10 mg/L
29% of EPA limit
Copper189 / 1300 ug/L
15% of EPA limit
Radium2.2 / 5 pCi/L
44% of EPA limit
Uranium0.11 / 30 ug/L
0% of EPA limit
Gross Alpha Radiation3 / 15 pCi/L
20% of EPA limit
4% of EPA limit
3% of EPA limit
Atrazine0.23 / 3 ug/L
8% of EPA limit
Nickel0.0243 mg/L
UnregulatedInorganic
Selenium0.0017 / 0.05 mg/L
3% of EPA limit
Fluoride0.704 / 4 mg/L
18% of EPA limit
Chromium (total)0.0023 / 0.1 mg/L
2% of EPA limit
Nitrite0.5 / 1 mg/L
50% of EPA limit
Barium0.0125 / 2 mg/L
1% of EPA limit
Gross Beta3.2 / 50 pCi/L
6% of EPA limit
Deethylatrazine0.16 ug/L
UnregulatedPesticide
Di(2-ethylhexyl) phthalate0.63 / 6 ug/L
11% of EPA limit
PFHpA (Perfluoroheptanoic Acid)2 ng/L
UnregulatedPFAS
PFPeS (Perfluoropentane Sulfonate)4 ng/L
UnregulatedPFAS
PFBA (Perfluorobutanoic Acid)4.7 ng/L
UnregulatedPFAS
PFPeA (Perfluoropentanoic Acid)6.3 ng/L
UnregulatedPFAS
PFAS (4 compounds detected)
Microplastics (not routinely tested)

Other cities in Columbia County

Water quality reports for nearby Wisconsin communities.

Frequently asked questions

Is Wisconsin Dells, WI tap water safe to drink?
Wisconsin Dells tap water has 3 contaminants currently measured above EPA legal standards (Maximum Contaminant Levels), and 10 above independent health guidelines. 22 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, Uranium. View the detailed report for each water system to see specific levels, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Wisconsin Dells water?
Monitoring has detected 22 contaminants in Wisconsin Dells's water supply: Lead, Nitrate, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Nickel, Selenium, Fluoride, Chromium (total), Nitrite, Barium, Gross Beta, Deethylatrazine, Di(2-ethylhexyl) phthalate, PFHpA (Perfluoroheptanoic Acid), PFPeS (Perfluoropentane Sulfonate), PFBA (Perfluorobutanoic Acid), PFPeA (Perfluoropentanoic Acid). Additionally, 4 PFAS compounds have been detected at trace levels. 3 of these are above EPA legal limits. 10 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Wisconsin Dells water have PFAS?
Yes. 4 PFAS compounds have been detected in Wisconsin Dells'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.
Where does Wisconsin Dells get its drinking water?
Wisconsin Dells'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. Wisconsin Dells is served by 5 water systems, the largest being WISCONSIN DELLS WATERWORKS (serving 3,232 people).

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