HENRY: EPA violation history, explained

HENRY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 2,230 people through 1,158 service connections.

Ranked against every other system in this dataset

Out of 12,903 systems in this dataset, HENRY ranks 5,257th by violation burden (59th percentile) - 11 violations total, 3 health-baseds.

Against the IL average

Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - HENRY's 3 is at or below that. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

HENRY's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 2006-01-03. Last reported to EPA: 05/27/2026.

The concern categories on record

HENRY's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:

• Microbial contamination / treatment technique - flagged from: Coliform (TCR)
• Nitrate / nitrite - flagged from: Nitrate

The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.

What HENRY's record does not cover

This is what HENRY reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. This record - 3 health-based violations on file for HENRY - 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.