Antioch, Illinois Water Quality Report
Water quality data for 3 water systems serving 14,200 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 13.4 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 134% | Above guideline |
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Compliance & Violations
Active Violations (26)
75
Jul 12, 2025
72
Jul 1, 2025
72
Jul 1, 2025
75
Apr 12, 2025
52
Jan 1, 2025
52
Jan 1, 2025
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Resolved Violations (138)
03
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
52
Oct 1, 2023
52
Oct 1, 2023
52
Oct 1, 2023
+ 133 more resolved violations
Frequently Asked Questions
Is Antioch tap water safe to drink?
Antioch'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 Antioch tap water?
1 contaminants have been detected in Antioch's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in Antioch?
Install a water filter rated for the specific contaminants found in Antioch's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Antioch have any water quality violations?
Yes, Antioch currently has 26 active violations. See the violations section above for details.