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Water Quality Report

Platteville, WI

Grant County · 12,268 residents · 1 water system

17

Contaminants detected

1

PFAS compounds

326

Hardness (mg/L)

0

Above legal limits

3

Above health guidelines

Platteville drinking water comes from groundwater wells. Based on the most recent monitoring data, 17 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 13 others. PFAS compounds have been detected at trace levels in Platteville water. Water hardness is 326 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

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
Nitrate0.008 / 10 mg/L
0% of EPA limit
Arsenic0.0008 / 0.01 mg/L
8% of EPA limit
Copper1250 / 1300 ug/L
96% of EPA limit
Radium3.8 / 5 pCi/L
75% of EPA limit
Uranium0.22 / 30 ug/L
1% of EPA limit
Gross Alpha Radiation4.8 / 15 pCi/L
32% of EPA limit
5% of EPA limit
9% of EPA limit
Selenium0.002 / 0.05 mg/L
4% of EPA limit
Xylenes0.87 / 10000 ug/L
0% of EPA limit
Fluoride0.717 / 4 mg/L
18% of EPA limit
Ethylbenzene0.48 / 700 ug/L
0% of EPA limit
Toluene0.59 / 1000 ug/L
0% of EPA limit
Barium0.0572 / 2 mg/L
3% of EPA limit
Mibk1 ug/L
Unregulated
Mercury (inorganic)0.0001 / 0.002 mg/L
5% of EPA limit
PFAS (1 compounds detected)
Microplastics (not routinely tested)

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, 3 contaminants are present above independent health guidelines, which are often stricter than legal limits. 17 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 17 contaminants in Platteville's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Selenium, Xylenes, Fluoride, Ethylbenzene, Toluene, Barium, Mibk, Mercury (inorganic). Additionally, 1 PFAS compounds have been detected at trace levels. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Platteville water have PFAS?
Yes. 1 PFAS compounds have been detected in Platteville's water supply at trace levels. PFAS are sometimes called "forever chemicals" because they do not break down in the environment. The EPA has set Maximum Contaminant Levels for several PFAS compounds. View the detailed report for specific concentrations.
Is Platteville water hard?
Yes. Platteville water has a hardness of 326 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 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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