Madison County · 36,793 residents · 5 water systems
12
Contaminants detected
5
PFAS compounds
382
Hardness (mg/L)
0
Above legal limits
7
Above health guidelines
Edwardsville drinking water comes from a mix of groundwater and surface water sources. Based on the most recent monitoring data, 12 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 8 others. PFAS compounds have been detected at trace levels in Edwardsville water. Water hardness is 382 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.
Contaminants detected in Edwardsville water
12 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Edwardsville tap water meets EPA legal standards (Maximum Contaminant Levels). However, 7 contaminants are present above independent health guidelines, which are often stricter than legal limits. 12 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes. 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 Edwardsville water?
Monitoring has detected 12 contaminants in Edwardsville's water supply: Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), PFHpA (Perfluoroheptanoic Acid), Barium, Fluoride, Netfosaa, Nmefosaa, Phosphorus Total. Additionally, 5 PFAS compounds have been detected at trace levels. 7 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Edwardsville water have PFAS?
Yes. 5 PFAS compounds have been detected in Edwardsville'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 Edwardsville water hard?
Yes. Edwardsville water has a hardness of 382 mg/L (very 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 Edwardsville get its drinking water?
Edwardsville's drinking water comes from a combination of groundwater and surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Edwardsville is served by 5 water systems, the largest being EDWARDSVILLE (serving 26,808 people).
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