Is ST CHARLES PWS's water safe to drink?

ST CHARLES PWS's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 78,961 people get their water from it, across 27,427 connections.

ST CHARLES PWS's record against the rest of the country

5 total violations and 0 health-based ones put ST CHARLES PWS at the 14th percentile nationally for violation burden, rank 11,088 of 12,903.

Against the MO average

ST CHARLES PWS's 0 health-based violations sit within the MO average of 6.1, across 327 systems statewide. See the lead and copper guide for why lead counts differently.

Most recent violation on record

ST CHARLES PWS's most recent violation on record is dated 2024-01-10. Last reported to EPA: 06/16/2026.

What ST CHARLES PWS's record does not cover

Everything on this page is ST CHARLES PWS'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 PWS's customers' taps is household plumbing, invisible to a system-level record ranked 11,088th of 12,903 by violation count. The guide to what this data misses covers that gap.