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Water Quality Report

Williamsville, IL

Sangamon County · 6,198 residents · 1 water system

4

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

0

Above health guidelines

Williamsville 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 Williamsville water

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

Lead0 / 0.015 mg/L
0% of EPA limit
Copper56.5 / 1300 ug/L
4% of EPA limit
Total Trihalomethanes47.8 / 80 ug/L
60% of EPA limit
Haloacetic Acids (HAA5)29.9 / 60 ug/L
50% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Water systems serving Williamsville

WILLIAMSVILLE

6,198 servedSurface water4 contaminants
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Other cities in Sangamon County

Water quality reports for nearby Illinois communities.

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Frequently asked questions

Is Williamsville, IL tap water safe to drink?
Williamsville tap water meets EPA legal standards (Maximum Contaminant Levels) and independent health guidelines. 4 contaminants have been detected in the water supply, including Lead, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5). Detection does not necessarily mean unsafe levels. View the detailed report for each water system to see specific levels.
What contaminants are in Williamsville water?
Monitoring has detected 4 contaminants in Williamsville's water supply: Lead, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5). See individual system reports for concentrations relative to EPA limits.
Does Williamsville water have PFAS?
Williamsville'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 Williamsville get its drinking water?
Williamsville's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Williamsville is served by one water system: WILLIAMSVILLE.

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