Water Quality Report
Lone Rock, WI
Richland County · 895 residents · 1 water system
9
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
2
Above health guidelines
Lone Rock drinking water comes from groundwater wells. Based on the most recent monitoring data, 9 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 5 others.
Contaminants detected in Lone Rock water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0011 / 0.015 mg/L
7% of EPA limit
Nitrate6.5 / 10 mg/L
65% of EPA limit
Arsenic0.0008 / 0.01 mg/L
8% of EPA limit
Copper170 / 1300 ug/L
13% of EPA limit
Total Trihalomethanes3.1 / 80 ug/L
4% of EPA limit
Haloacetic Acids (HAA5)3.7 / 60 ug/L
6% of EPA limit
Atrazine0.016 / 3 ug/L
1% of EPA limit
PFBA (Perfluorobutanoic Acid)3.2 ng/L
UnregulatedPFAS
Barium0.0103 / 2 mg/L
1% of EPA limit
Microplastics (not routinely tested)
Water systems serving Lone Rock
Other cities in Richland County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Lone Rock, WI tap water safe to drink?
Lone Rock tap water meets EPA legal standards (Maximum Contaminant Levels). However, 2 contaminants are present above independent health guidelines, which are often stricter than legal limits. 9 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes. 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 Lone Rock water?
Monitoring has detected 9 contaminants in Lone Rock's water supply: Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, PFBA (Perfluorobutanoic Acid), Barium. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Lone Rock get its drinking water?
Lone Rock'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. Lone Rock is served by one water system: LONE ROCK WATERWORKS.
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