Walworth County · 8,541 residents · 3 water systems
12
Contaminants detected
4
PFAS compounds
—
Hardness (mg/L)
1
Above legal limits
4
Above health guidelines
Delavan 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, Radium, and 8 others. PFAS compounds have been detected at trace levels in Delavan water.
Contaminants detected in Delavan water
12 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Delavan tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 4 above independent health guidelines. 12 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, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Delavan water?
Monitoring has detected 12 contaminants in Delavan's water supply: Lead, Nitrate, Copper, Radium, Uranium, Gross Alpha Radiation, Trichloroethylene, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Fluoride, Barium. Additionally, 4 PFAS compounds have been detected at trace levels. 1 of these are above EPA legal limits. 4 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Delavan water have PFAS?
Yes. 4 PFAS compounds have been detected in Delavan'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 Delavan get its drinking water?
Delavan'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. Delavan is served by 3 water systems, the largest being DELAVAN WATERWORKS (serving 8,451 people).
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