Duquoin, Illinois Water Quality Report
Water quality data for 3 water systems serving 9,462 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
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Compliance & Violations
Active Violations (26)
4H
Jul 2, 2025
4H
Jul 2, 2025
2E
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
Violation
Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
Resolved Violations (47)
75
Aug 22, 2025
75
Aug 22, 2025
3A
Jul 1, 2025 — Jul 31, 2025
27
Jul 1, 2025 — Jul 31, 2025
27
Jul 1, 2023 — Sep 30, 2023
+ 42 more resolved violations
Frequently Asked Questions
Is Duquoin tap water safe to drink?
Duquoin'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 Duquoin tap water?
1 contaminants have been detected in Duquoin's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in Duquoin?
Install a water filter rated for the specific contaminants found in Duquoin's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Duquoin have any water quality violations?
Yes, Duquoin currently has 26 active violations. See the violations section above for details.