St. Clair County · 9,144 residents · 2 water systems
4
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
5
Above health guidelines
Mascoutah drinking water comes from surface water. Based on the most recent monitoring data, 4 contaminants have been detected in the water supply, including Lead, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5). PFAS testing has been conducted with no detections.
Contaminants detected in Mascoutah water
4 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Mascoutah tap water meets EPA legal standards (Maximum Contaminant Levels). However, 5 contaminants are present above independent health guidelines, which are often stricter than legal limits. 4 contaminants have been detected in the water supply, including Lead, 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 Mascoutah water?
Monitoring has detected 4 contaminants in Mascoutah's water supply: Lead, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5). 5 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Mascoutah water have PFAS?
Mascoutah'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 Mascoutah get its drinking water?
Mascoutah's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Mascoutah is served by 2 water systems, the largest being MASCOUTAH (serving 8,759 people).
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