PWSID
MO6010719
State
Missouri
City
ST PETERS
Population served
52,575
Primary source
SWP
Score history
▼ 14 points — the score moved from 100 to 86 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Dec 2024). Levels in parts per trillion (ppt).
PFOA
Perfluorooctanoic acid
4.9 ppt
limit 4 ppt
Lithium
36,400 ppt
limit —
PFBA
9.9 ppt
limit —
PFHxA
5.9 ppt
limit —
PFPeA
5.9 ppt
limit —
Violations & enforcement
1
Violations on record
0
Unaddressed
0
Health-based
7
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Nov 2019. Official EPA record →
Recent enforcement actions
- State action · SOX Nov 2019
- State action · SIA Sep 1987
- State action · SIA Sep 1987
- State action · SIE Sep 1987
- State action · SIE Sep 1987
- State action · SIA Sep 1984
- State action · SIA Sep 1984
This profile is built from EPA public records for system MO6010719 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.