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Water Quality Report

Lone Rock, WI

Richland County · 895 residents · 1 water system

12

Contaminants detected

0

PFAS compounds

217

Hardness (mg/L)

0

Above legal limits

3

Above health guidelines

Lone Rock drinking water comes from groundwater wells. Based on the most recent monitoring data, 12 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 8 others. Water hardness is 217 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

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
Nitrate7.7 / 10 mg/L
77% of EPA limit
Arsenic0.0008 / 0.01 mg/L
8% of EPA limit
Copper170 / 1300 ug/L
13% of EPA limit
Radium0.5 / 5 pCi/L
10% of EPA limit
Uranium1.7 / 30 ug/L
6% of EPA limit
Gross Alpha Radiation5.4 / 15 pCi/L
36% of EPA limit
4% of EPA limit
6% of EPA limit
Atrazine0.016 / 3 ug/L
1% of EPA limit
Barium0.0093 / 2 mg/L
0% of EPA limit
PFBA (Perfluorobutanoic Acid)3.2 ng/L
UnregulatedPFAS
Microplastics (not routinely tested)

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, 3 contaminants are present above independent health guidelines, which are often stricter than legal limits. 12 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 Lone Rock water?
Monitoring has detected 12 contaminants in Lone Rock's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Barium, PFBA (Perfluorobutanoic Acid). 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Is Lone Rock water hard?
Yes. Lone Rock water has a hardness of 217 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 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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