Wilmington, Illinois Water Quality Report
Water quality data for 2 water systems serving 6,492 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 |
| PFBS | 0.003 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFPeA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Compliance & Violations
Active Violations (5)
4H
Jul 2, 2025
4H
Jul 2, 2025
4H
Jul 2, 2025
4H
Jul 2, 2025
72
Jul 1, 2025
Resolved Violations (495)
27
Jul 1, 2025 — Sep 30, 2025
27
Apr 1, 2025 — Jun 30, 2025
27
Apr 1, 2025 — Jun 30, 2025
27
Apr 1, 2025 — Jun 30, 2025
3A
Feb 1, 2025 — Feb 28, 2025
+ 490 more resolved violations
Frequently Asked Questions
Is Wilmington tap water safe to drink?
Wilmington's water meets all EPA maximum contaminant levels. However, 4 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Wilmington tap water?
4 contaminants have been detected in Wilmington's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Wilmington?
Install a water filter rated for the specific contaminants found in Wilmington's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Wilmington have any water quality violations?
Yes, Wilmington currently has 49 active violations. See the violations section above for details.