Madison County · 17,305 residents · 2 water systems
9
Contaminants detected
2
PFAS compounds
573
Hardness (mg/L)
1
Above legal limits
0
Above health guidelines
Troy drinking water comes from a mix of groundwater and surface water sources. Based on the most recent monitoring data, 9 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Total Trihalomethanes, and 5 others. PFAS compounds have been detected at trace levels in Troy water. Water hardness is 573 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.
Contaminants detected in Troy water
9 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Troy tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels). 9 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, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Troy water?
Monitoring has detected 9 contaminants in Troy's water supply: Lead, Nitrate, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Selenium, Barium, Fluoride, Lithium. Additionally, 2 PFAS compounds have been detected at trace levels. 1 of these are above EPA legal limits. See individual system reports for concentrations relative to EPA limits.
Does Troy water have PFAS?
Yes. 2 PFAS compounds have been detected in Troy'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 Troy water hard?
Yes. Troy water has a hardness of 573 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 Troy get its drinking water?
Troy'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. Troy is served by 2 water systems, the largest being TROY (serving 16,962 people).
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