Water Quality Report
Platteville, WI
Grant County · 12,268 residents · 1 water system
13
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
2
Above health guidelines
Platteville 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.
Contaminants detected in Platteville water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0103 / 0.015 mg/L
69% of EPA limit
Nitrate0.025 / 10 mg/L
0% of EPA limit
Arsenic0.0008 / 0.01 mg/L
8% of EPA limit
Copper267 / 1300 ug/L
21% of EPA limit
Radium1.3 / 5 pCi/L
26% of EPA limit
Uranium0.45 / 30 ug/L
2% of EPA limit
Gross Alpha Radiation3.5 / 15 pCi/L
23% of EPA limit
Total Trihalomethanes4 / 80 ug/L
5% of EPA limit
Haloacetic Acids (HAA5)5.3 / 60 ug/L
9% of EPA limit
Selenium0.002 / 0.05 mg/L
4% of EPA limit
Fluoride0.55 / 4 mg/L
14% of EPA limit
Mercury (inorganic)0.0001 / 0.002 mg/L
5% of EPA limit
Barium0.392 / 2 mg/L
20% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)
Water systems serving Platteville
Other cities in Grant County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Platteville, WI tap water safe to drink?
Platteville 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. 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 Platteville water?
Monitoring has detected 13 contaminants in Platteville's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Selenium, Fluoride, Mercury (inorganic), Barium. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Platteville water have PFAS?
Platteville'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 Platteville get its drinking water?
Platteville'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. Platteville is served by one water system: PLATTEVILLE WATERWORKS.
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