Water Quality Report
Dousman, WI
Waukesha County · 2,580 residents · 3 water systems
13
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
5
Above health guidelines
Dousman drinking water comes from groundwater wells. Based on the most recent monitoring data, 13 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 9 others.
Contaminants detected in Dousman water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0023 / 0.015 mg/L
15% of EPA limit
Nitrate0.057 / 10 mg/L
1% of EPA limit
Arsenic0.0038 / 0.01 mg/L
38% of EPA limit
Copper1000 / 1300 ug/L
77% of EPA limit
Radium4.8 / 5 pCi/L
95% of EPA limit
Uranium0.394 / 30 ug/L
1% of EPA limit
Gross Alpha Radiation10.2 / 15 pCi/L
68% of EPA limit
Total Trihalomethanes0.39 / 80 ug/L
0% of EPA limit
Haloacetic Acids (HAA5)0.25 / 60 ug/L
0% of EPA limit
Nickel0.0021 mg/L
UnregulatedInorganic
Nitrite0.024 / 1 mg/L
2% of EPA limit
Barium0.099 / 2 mg/L
5% of EPA limit
Fluoride0.23 / 4 mg/L
6% of EPA limit
Microplastics (not routinely tested)
Other cities in Waukesha County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Dousman, WI tap water safe to drink?
Dousman tap water meets EPA legal standards (Maximum Contaminant Levels). However, 5 contaminants are present above independent health guidelines, which are often stricter than legal limits. 13 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Radium. 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 Dousman water?
Monitoring has detected 13 contaminants in Dousman's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Nitrite, Barium, Fluoride. 5 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Dousman get its drinking water?
Dousman'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. Dousman is served by 3 water systems, the largest being DOUSMAN WATER UTILITY (serving 2,350 people).
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