Seneca 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, Total Trihalomethanes, and 7 others. PFAS compounds have been detected at trace levels in Seneca water. Water hardness is 170 mg/L (hard), which is within a typical range for the region.
Contaminants detected in Seneca water
11 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Seneca 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, 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 Seneca water?
Monitoring has detected 11 contaminants in Seneca's water supply: Lead, Nitrate, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Selenium, PFHpA (Perfluoroheptanoic Acid), Styrene, Barium, Fluoride. Additionally, 5 PFAS compounds have been detected at trace levels. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Seneca water have PFAS?
Yes. 5 PFAS compounds have been detected in Seneca'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 Seneca water hard?
Yes. Seneca water has a hardness of 170 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 Seneca get its drinking water?
Seneca'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. Seneca is served by one water system: SENECA SANITARY DIST NO 1.
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