THORNTON: EPA violation history, explained

THORNTON's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 2,386, over 988 connections.

How this compares nationally

THORNTON has 7 violations on record in total, 0 of thems health-based - ranking it 10,868th of 12,903 systems by violation count, the 16th percentile nationally.

Against the IL average

IL's 560 covered systems average 5.0 health-based violations each; THORNTON carries 0, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

THORNTON's most recent violation on record is dated 2026-01-01. Last reported to EPA: 05/27/2026.

What THORNTON's record does not cover

Everything on this page is THORNTON's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 7 logged violations can see. The guide to what this data misses covers that gap.