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Water Quality Report

Hillsboro, IL

Montgomery County · 7,120 residents · 3 water systems

12

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

2

Above health guidelines

Hillsboro drinking water comes from surface water. Based on the most recent monitoring data, 12 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Total Trihalomethanes, and 8 others. PFAS testing has been conducted with no detections.

Contaminants detected in Hillsboro water

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

Lead0.0011 / 0.015 mg/L
7% of EPA limit
Nitrate0.14 / 10 mg/L
1% of EPA limit
Copper25.4 / 1300 ug/L
2% of EPA limit
Total Trihalomethanes33.7 / 80 ug/L
42% of EPA limit
54% of EPA limit
Atrazine0.3 / 3 ug/L
10% of EPA limit
2,4-D0.28 / 70 ug/L
0% of EPA limit
Dicamba0.14 ug/L
UnregulatedPesticide
Aldrin0.1 ug/L
Unregulated
Barium0.0637 / 2 mg/L
3% of EPA limit
Fluoride0.85 / 4 mg/L
21% of EPA limit
Toc6.2 mg/L
Unregulated
PFAS (tested — none detected)
Microplastics (not routinely tested)

Other cities in Montgomery County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Hillsboro, IL tap water safe to drink?
Hillsboro 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. 12 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 Hillsboro water?
Monitoring has detected 12 contaminants in Hillsboro's water supply: Lead, Nitrate, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, 2,4-D, Dicamba, Aldrin, Barium, Fluoride, Toc. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Hillsboro water have PFAS?
Hillsboro'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 Hillsboro get its drinking water?
Hillsboro's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Hillsboro is served by 3 water systems, the largest being HILLSBORO (serving 4,402 people).

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