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Water Quality Report

Clinton, WI

Rock County · 2,119 residents · 1 water system

13

Contaminants detected

0

PFAS compounds

300

Hardness (mg/L)

0

Above legal limits

3

Above health guidelines

Clinton 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. PFAS testing has been conducted with no detections. Water hardness is 300 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Clinton water

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

Lead0.00029 / 0.015 mg/L
2% of EPA limit
Nitrate0.064 / 10 mg/L
1% of EPA limit
Arsenic0.0014 / 0.01 mg/L
14% of EPA limit
Copper690 / 1300 ug/L
53% of EPA limit
Radium3.1 / 5 pCi/L
61% of EPA limit
Uranium0.485 / 30 ug/L
2% of EPA limit
Gross Alpha Radiation7 / 15 pCi/L
47% of EPA limit
Total Trihalomethanes3 / 80 ug/L
4% of EPA limit
Haloacetic Acids (HAA5)0.88 / 60 ug/L
1% of EPA limit
Nickel0.0013 mg/L
UnregulatedInorganic
Fluoride0.11 / 4 mg/L
3% of EPA limit
Thallium0.0011 / 0.002 mg/L
55% of EPA limit
Barium0.27 / 2 mg/L
14% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Water systems serving Clinton

CLINTON WATERWORKS

2,119 servedGroundwater13 contaminants3 above guidelines
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Other cities in Rock County

Water quality reports for nearby Wisconsin communities.

BeloitEdgertonEvansvilleFootvilleJanesvilleMiltonOrfordville

Frequently asked questions

Is Clinton, WI tap water safe to drink?
Clinton 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. 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 Clinton water?
Monitoring has detected 13 contaminants in Clinton's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Fluoride, Thallium, Barium. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Clinton water have PFAS?
Clinton's water has been tested for PFAS compounds with no detections. Testing was conducted as part of the EPA's Unregulated Contaminant Monitoring Rule (UCMR5) program.
Is Clinton water hard?
Yes. Clinton water has a hardness of 300 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 Clinton get its drinking water?
Clinton'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. Clinton is served by one water system: CLINTON WATERWORKS.

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