Water Quality Report
Milton, WI
Rock County · 5,788 residents · 2 water systems
11
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
3
Above health guidelines
Milton drinking water comes from groundwater wells. Based on the most recent monitoring data, 11 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 7 others. PFAS testing has been conducted with no detections.
Contaminants detected in Milton water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0015 / 0.015 mg/L
10% of EPA limit
Nitrate0.477 / 10 mg/L
5% of EPA limit
Arsenic0.001 / 0.01 mg/L
10% of EPA limit
Copper70.3 / 1300 ug/L
5% of EPA limit
Radium1.9 / 5 pCi/L
39% of EPA limit
Gross Alpha Radiation3.1 / 15 pCi/L
20% of EPA limit
Total Trihalomethanes6.4 / 80 ug/L
8% of EPA limit
Haloacetic Acids (HAA5)0.62 / 60 ug/L
1% of EPA limit
Fluoride0.82 / 4 mg/L
21% of EPA limit
Barium0.0546 / 2 mg/L
3% of EPA limit
Gross Beta2.4 / 50 pCi/L
5% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)
Other cities in Rock County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Milton, WI tap water safe to drink?
Milton 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. 11 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 Milton water?
Monitoring has detected 11 contaminants in Milton's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Fluoride, Barium, Gross Beta. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Milton water have PFAS?
Milton'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.
Where does Milton get its drinking water?
Milton'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. Milton is served by 2 water systems, the largest being MILTON WATERWORKS (serving 5,588 people).
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