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Water Quality Report

Leroy, IL

McLean County · 3,498 residents · 1 water system

9

Contaminants detected

0

PFAS compounds

91

Hardness (mg/L)

1

Above legal limits

2

Above health guidelines

Leroy drinking water comes from groundwater wells. Based on the most recent monitoring data, 9 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 5 others. PFAS testing has been conducted with no detections. Water hardness is 91 mg/L (moderately hard), which is within a typical range for the region.

Contaminants detected in Leroy water

Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.

Lead0.013 / 0.015 mg/L
87% of EPA limit
Nitrate0.73 / 10 mg/L
7% of EPA limit
Arsenic0.0038 / 0.01 mg/L
38% of EPA limit
Copper2.7 / 1.3 mg/L
150% of EPA limit
Total Trihalomethanes32.7 / 80 ug/L
41% of EPA limit
56% of EPA limit
Barium0.027 / 2 mg/L
1% of EPA limit
Fluoride0.302 / 4 mg/L
8% of EPA limit
Orthophosphate920 ug/L
Unregulated
PFAS (tested — none detected)
Microplastics (not routinely tested)

Other cities in McLean County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Leroy, IL tap water safe to drink?
Leroy tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 2 above independent health guidelines. 9 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, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Leroy water?
Monitoring has detected 9 contaminants in Leroy's water supply: Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium, Fluoride, Orthophosphate. 1 of these are above EPA legal limits. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Leroy water have PFAS?
Leroy'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 Leroy get its drinking water?
Leroy's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Leroy is served by one water system: LE ROY.

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