Water Quality Report
Coloma, WI
Waushara County · 454 residents · 1 water system
8
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
1
Above health guidelines
Coloma drinking water comes from groundwater wells. Based on the most recent monitoring data, 8 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Total Trihalomethanes, and 4 others. PFAS testing has been conducted with no detections.
Contaminants detected in Coloma water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0017 / 0.015 mg/L
11% of EPA limit
Nitrate6.8 / 10 mg/L
68% of EPA limit
Copper190 / 1300 ug/L
15% of EPA limit
Total Trihalomethanes0 / 80 ug/L
0% of EPA limit
Haloacetic Acids (HAA5)0.1 / 60 ug/L
0% of EPA limit
Atrazine0.022 / 3 ug/L
1% of EPA limit
Nickel0.001 mg/L
UnregulatedInorganic
Deethylatrazine0.04 ug/L
UnregulatedPesticide
PFAS (tested — none detected)
Microplastics (not routinely tested)
Water systems serving Coloma
Other cities in Waushara County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Coloma, WI tap water safe to drink?
Coloma tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 8 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5). 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 Coloma water?
Monitoring has detected 8 contaminants in Coloma's water supply: Lead, Nitrate, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Nickel, Deethylatrazine. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Coloma water have PFAS?
Coloma'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 Coloma get its drinking water?
Coloma'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. Coloma is served by one water system: COLOMA WATERWORKS.
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