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Water Quality Report

Winfield, IL

DuPage County · 9,835 residents · 1 water system

10

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

1

Above health guidelines

Winfield drinking water comes from surface water. Based on the most recent monitoring data, 10 contaminants have been detected in the water supply, including Lead, Arsenic, Copper, Radium, and 6 others. PFAS testing has been conducted with no detections.

Contaminants detected in Winfield 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
Arsenic0.002 / 0.01 mg/L
20% of EPA limit
Copper35.9 / 1300 ug/L
3% of EPA limit
Radium2.6 / 5 pCi/L
51% of EPA limit
64% of EPA limit
40% of EPA limit
Nickel0.0021 mg/L
UnregulatedInorganic
Barium0.0711 / 2 mg/L
4% of EPA limit
Chromium (total)0.00076 / 0.1 mg/L
1% of EPA limit
Fluoride0.32 / 4 mg/L
8% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Other cities in DuPage County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Winfield, IL tap water safe to drink?
Winfield tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 10 contaminants have been detected in the water supply, including Lead, Arsenic, Copper, Radium, 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 Winfield water?
Monitoring has detected 10 contaminants in Winfield's water supply: Lead, Arsenic, Copper, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Barium, Chromium (total), Fluoride. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Winfield water have PFAS?
Winfield'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 Winfield get its drinking water?
Winfield's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Winfield is served by one water system: WINFIELD.

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