West Chicago, Illinois Water Quality Report
Water quality data for 2 water systems serving 29,742 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 36.8 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 368% | Above guideline |
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Compliance & Violations
Active Violations (20)
4H
Jul 2, 2025
4H
Jul 2, 2025
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Resolved Violations (158)
71
Jul 1, 2021
71
Jul 1, 2021
66
Dec 30, 2020
66
Dec 30, 2020
71
Jul 1, 2020
+ 153 more resolved violations
Frequently Asked Questions
Is West Chicago tap water safe to drink?
West Chicago's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in West Chicago tap water?
1 contaminants have been detected in West Chicago's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in West Chicago?
Install a water filter rated for the specific contaminants found in West Chicago's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does West Chicago have any water quality violations?
Yes, West Chicago currently has 20 active violations. See the violations section above for details.