Water Quality Report
Gresham, WI
Sheboygan County · 534 residents · 1 water system
12
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
1
Above legal limits
2
Above health guidelines
Gresham 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, Copper, Radon, and 8 others.
Contaminants detected in Gresham water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.00093 / 0.015 mg/L
6% of EPA limit
Nitrate0.95 / 10 mg/L
10% of EPA limit
Copper200 / 1300 ug/L
15% of EPA limit
Radon3060 pCi/L
UnregulatedRadionuclide
Radium2.4 / 5 pCi/L
48% of EPA limit
Uranium3.3 / 30 ug/L
11% of EPA limit
Gross Alpha Radiation51.3 / 15 pCi/L
150% of EPA limit
Total Trihalomethanes25.7 / 80 ug/L
32% of EPA limit
Haloacetic Acids (HAA5)8 / 60 ug/L
13% of EPA limit
Barium0.028 / 2 mg/L
1% of EPA limit
Fluoride0.87 / 4 mg/L
22% of EPA limit
Gross Beta3.6 / 50 pCi/L
7% of EPA limit
Microplastics (not routinely tested)
Water systems serving Gresham
Other cities in Sheboygan County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Gresham, WI tap water safe to drink?
Gresham tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 2 above independent health guidelines. 12 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radon, Radium. View the detailed report for each water system to see specific levels, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Gresham water?
Monitoring has detected 12 contaminants in Gresham's water supply: Lead, Nitrate, Copper, Radon, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium, Fluoride, Gross Beta. 1 of these are above EPA legal limits. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Gresham get its drinking water?
Gresham'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. Gresham is served by one water system: GRESHAM WATERWORKS.
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