Winnetka drinking water comes from surface water. 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 compounds have been detected at trace levels in Winnetka water. Water hardness is 130 mg/L (hard), which is within a typical range for the region.
Contaminants detected in Winnetka water
8 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Winnetka 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 Winnetka water?
Monitoring has detected 8 contaminants in Winnetka's water supply: Lead, Nitrate, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium, Fluoride, Toc. Additionally, 2 PFAS compounds have been detected at trace levels. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Winnetka water have PFAS?
Yes. 2 PFAS compounds have been detected in Winnetka'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.
Is Winnetka water hard?
Yes. Winnetka water has a hardness of 130 mg/L (hard). Hard water is not a health concern but can cause scale buildup in water heaters and appliances, reduce soap effectiveness, and leave mineral deposits. Water softeners or conditioning systems can address hardness.
Where does Winnetka get its drinking water?
Winnetka's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Winnetka is served by one water system: WINNETKA.
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