What's in ARCOLA's water?
ARCOLA had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 2,927 people get their water from it, across 1,330 connections.
How this compares nationally
Out of 12,903 systems in this dataset, ARCOLA ranks 3,104th by violation burden (76th percentile) - 20 violations total, 6 health-baseds.
Against the IL average
ARCOLA's 6 health-based violations sit above 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
ARCOLA's most recent violation on record is dated 2026-01-03, with the most recent health-based one dated 2022-10-11. Last reported to EPA: 05/27/2026.
The concern categories on record
ARCOLA'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 ARCOLA's record does not cover
Everything on this page is ARCOLA's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 6 health-based violations on file for ARCOLA - 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.