Is ST CHARLES's water safe to drink?
ST CHARLES has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 33,103 people get their water from it, across 12,690 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, ST CHARLES ranks 5,227th by violation burden (59th percentile) - 11 violations total, 3 health-baseds.
Against the IL average
ST CHARLES's 3 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
ST CHARLES's most recent violation on record is dated 2026-01-01, with the most recent health-based one dated 1995-01-07. Last reported to EPA: 05/27/2026.
The concern categories on record
ST CHARLES'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)
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
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 ST CHARLES's record does not cover
Everything on this page is ST CHARLES's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and ST CHARLES's customers' taps is household plumbing, invisible to a system-level record ranked 5,227th of 12,903 by violation count. The guide to what this data misses covers that gap.