City overview · Saint Charles County
PFAS in Saint Charles, MO
Low LevelEPA UCMR 5 tested 1 public water system serving the Saint Charles area across 2 ZIP codes. Only trace PFAS were detected across Saint Charles's tested systems.
Plain English
01What this means for Saint Charles
The water systems serving the Saint Charles area measured only low, trace concentrations of PFAS — well below the EPA's Maximum Contaminant Levels. For most residents this represents minimal risk from drinking water. Review your specific ZIP below, and check your utility's annual Consumer Confidence Report for year-over-year trends.
By utility
02Water systems serving Saint Charles
By ZIP code
03Find your exact result
Contamination can differ block to block. Select your ZIP code for the precise reading at the utility that serves your address.
Source & Methodology
About this data
City-level figures aggregate the individual public water systems tested under EPA UCMR 5 whose service area falls within the Saint Charles area. Values reflect water quality at the treatment plant; your home's plumbing can affect what reaches your tap. Select your ZIP above for the utility-specific reading.