ST CHARLES COUNTY PWSD 2: EPA violation history, explained
ST CHARLES COUNTY PWSD 2 has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 100,587 people get their water from it, across 39,978 connections.
How this compares nationally
ST CHARLES COUNTY PWSD 2 has 5 violations on record in total, 2 of thems health-based - ranking it 6,834th of 12,903 systems by violation count, the 47th percentile nationally.
Against the MO average
Among the 327 MO systems in this dataset, the average is 6.1 health-based violations - ST CHARLES COUNTY PWSD 2's 2 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
ST CHARLES COUNTY PWSD 2's most recent violation on record is dated 2025-01-06, with the most recent health-based one dated 2007-01-09. Last reported to EPA: 06/16/2026.
The concern categories on record
ST CHARLES COUNTY PWSD 2'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 ST CHARLES COUNTY PWSD 2's record does not cover
Everything on this page is ST CHARLES COUNTY PWSD 2'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 COUNTY PWSD 2's customers' taps is household plumbing, invisible to a system-level record ranked 6,834th of 12,903 by violation count. The guide to what this data misses covers that gap.