Tinley Park, Illinois Water Quality Report
Water quality data for 1 water system serving 56,703 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (20)
72
Jul 1, 2025
52
Oct 1, 2024
52
Oct 1, 2024
52
Oct 1, 2024
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (22)
4H
Jul 2, 2025
4H
Jul 2, 2025
4H
Jul 2, 2025
71
Jul 1, 2019
71
Jul 1, 2019
+ 17 more resolved violations
Frequently Asked Questions
Is Tinley Park tap water safe to drink?
Tinley Park'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 Tinley Park tap water?
0 contaminants have been detected in Tinley Park's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Tinley Park?
Install a water filter rated for the specific contaminants found in Tinley Park's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Tinley Park have any water quality violations?
Yes, Tinley Park currently has 20 active violations. See the violations section above for details.