HILLSIDE: EPA violation history, explained

HILLSIDE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 8,200 people through 2,465 service connections.

Ranked against every other system in this dataset

Out of 12,903 systems in this dataset, HILLSIDE ranks 8,377th by violation burden (35th percentile) - 8 violations total, 1 health-based.

Against the IL average

HILLSIDE's 1 health-based violations sit within the IL average of 5.0, across 560 systems statewide. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

HILLSIDE's most recent violation on record is dated 2013-01-07, with the most recent health-based one dated 1993-01-01. Last reported to EPA: 05/27/2026.

The concern categories on record

HILLSIDE'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)

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 HILLSIDE's record does not cover

This is what HILLSIDE 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 8 logged violations can see. The guide to what this data misses covers that gap.