Maryville, Illinois Water Quality Report
Water quality data for 1 water system serving 10,150 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (5)
72
Jul 1, 2025
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (17)
24
Sep 1, 2008 — Sep 30, 2008
24
Sep 1, 2008 — Sep 30, 2008
24
Sep 1, 2008 — Sep 30, 2008
24
Sep 1, 2008 — Sep 30, 2008
24
Jul 1, 2000 — Jul 31, 2000
+ 12 more resolved violations
Frequently Asked Questions
Is Maryville tap water safe to drink?
Maryville's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Maryville tap water?
0 contaminants have been detected in Maryville's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Maryville?
Install a water filter rated for the specific contaminants found in Maryville's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Maryville have any water quality violations?
Yes, Maryville currently has 5 active violations. See the violations section above for details.