AVISTON: EPA violation history, explained

AVISTON has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 2,545 people through 1,032 service connections.

Ranked against every other system in this dataset

27 total violations and 2 health-based ones put AVISTON at the 53th percentile nationally for violation burden, rank 6,122 of 12,903.

Against the IL average

AVISTON's 2 health-based violations sit within the IL average of 5.0, across 560 systems statewide. See the lead and copper guide for why lead counts differently.

Most recent violation on record

AVISTON's most recent violation on record is dated 2018-01-07, with the most recent health-based one dated 1999-01-10. Last reported to EPA: 05/27/2026.

The concern categories on record

AVISTON'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:

• Lead & copper - flagged from: Lead and Copper Rule

The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.

What AVISTON's record does not cover

This is what AVISTON 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. Between the utility's meter and AVISTON's customers' taps is household plumbing, invisible to a system-level record ranked 6,122th of 12,903 by violation count. The guide to what this data misses covers that gap.