What's in TINLEY PARK's water?

TINLEY PARK's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 56,703 people get their water from it, across 20,816 connections.

TINLEY PARK's record against the rest of the country

TINLEY PARK has 12 violations on record in total, 0 of thems health-based - ranking it 10,304th of 12,903 systems by violation count, the 20th percentile nationally.

Against the IL average

Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - TINLEY PARK's 0 is at or below that. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

TINLEY PARK's most recent violation on record is dated 2025-02-07. Last reported to EPA: 05/27/2026.

What TINLEY PARK's record does not cover

Everything on this page is TINLEY PARK's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 0 health-based violations on file for TINLEY PARK - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.