Water Quality Report
Horicon, WI
Dodge County · 3,682 residents · 1 water system
11
Contaminants detected
1
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
2
Above health guidelines
Horicon drinking water comes from groundwater wells. Based on the most recent monitoring data, 11 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 7 others. PFAS compounds have been detected at trace levels in Horicon water.
Contaminants detected in Horicon water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0032 / 0.015 mg/L
21% of EPA limit
Nitrate0.079 / 10 mg/L
1% of EPA limit
Copper430 / 1300 ug/L
33% of EPA limit
Radium4.2 / 5 pCi/L
85% of EPA limit
Uranium0.379 / 30 ug/L
1% of EPA limit
Gross Alpha Radiation10.1 / 15 pCi/L
67% of EPA limit
Total Trihalomethanes1.1 / 80 ug/L
1% of EPA limit
Nickel0.0015 mg/L
UnregulatedInorganic
Fluoride0.815 / 4 mg/L
20% of EPA limit
1,4-Dichlorobenzene0.29 / 75 ug/L
0% of EPA limit
Barium0.1 / 2 mg/L
5% of EPA limit
PFAS (1 compounds detected)
Microplastics (not routinely tested)
Water systems serving Horicon
Other cities in Dodge County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Horicon, WI tap water safe to drink?
Horicon 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. 11 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, Uranium. 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 Horicon water?
Monitoring has detected 11 contaminants in Horicon's water supply: Lead, Nitrate, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Nickel, Fluoride, 1,4-Dichlorobenzene, Barium. Additionally, 1 PFAS compounds have been detected at trace levels. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Horicon water have PFAS?
Yes. 1 PFAS compounds have been detected in Horicon'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.
Where does Horicon get its drinking water?
Horicon'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. Horicon is served by one water system: HORICON WATERWORKS.
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