Water Quality Report
Omro, WI
Winnebago County · 3,629 residents · 1 water system
10
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
2
Above health guidelines
Omro drinking water comes from groundwater wells. Based on the most recent monitoring data, 10 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Uranium, and 6 others. PFAS testing has been conducted with no detections.
Contaminants detected in Omro water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0018 / 0.015 mg/L
12% of EPA limit
Nitrate1.3 / 10 mg/L
13% of EPA limit
Radium1.7 / 5 pCi/L
33% of EPA limit
Uranium1.1 / 30 ug/L
4% of EPA limit
Gross Alpha Radiation0.81 / 15 pCi/L
5% of EPA limit
Total Trihalomethanes8.2 / 80 ug/L
10% of EPA limit
Haloacetic Acids (HAA5)1.5 / 60 ug/L
2% of EPA limit
Nickel0.0048 mg/L
UnregulatedInorganic
Fluoride0.457 / 4 mg/L
11% of EPA limit
Barium0.084 / 2 mg/L
4% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)
Water systems serving Omro
Other cities in Winnebago County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Omro, WI tap water safe to drink?
Omro 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. 10 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Uranium, Gross Alpha Radiation. 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 Omro water?
Monitoring has detected 10 contaminants in Omro's water supply: Lead, Nitrate, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Fluoride, Barium. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Omro water have PFAS?
Omro'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 Omro get its drinking water?
Omro'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. Omro is served by one water system: OMRO WATERWORKS.
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