Water Quality Report
Oconto Falls, WI
Oconto County · 2,892 residents · 1 water system
11
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
4
Above health guidelines
Oconto Falls drinking water comes from groundwater wells. Based on the most recent monitoring data, 11 contaminants have been detected in the water supply, including Lead, Arsenic, Copper, Radium, and 7 others.
Contaminants detected in Oconto Falls water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.011 / 0.015 mg/L
73% of EPA limit
Arsenic0.0028 / 0.01 mg/L
28% of EPA limit
Copper450 / 1300 ug/L
35% of EPA limit
Radium4.2 / 5 pCi/L
84% of EPA limit
Uranium0.796 / 30 ug/L
3% of EPA limit
Gross Alpha Radiation4.4 / 15 pCi/L
29% of EPA limit
Total Trihalomethanes1.5 / 80 ug/L
2% of EPA limit
Haloacetic Acids (HAA5)0.51 / 60 ug/L
1% of EPA limit
Nickel0.0015 mg/L
UnregulatedInorganic
Fluoride0.14 / 4 mg/L
4% of EPA limit
Barium0.16 / 2 mg/L
8% of EPA limit
Microplastics (not routinely tested)
Water systems serving Oconto Falls
Other cities in Oconto County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Oconto Falls, WI tap water safe to drink?
Oconto Falls 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. 11 contaminants have been detected in the water supply, including Lead, Arsenic, Copper, Radium, Uranium. 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 Oconto Falls water?
Monitoring has detected 11 contaminants in Oconto Falls's water supply: Lead, Arsenic, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Fluoride, Barium. 4 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Oconto Falls get its drinking water?
Oconto Falls'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. Oconto Falls is served by one water system: OCONTO FALLS WATERWORKS.
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