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Water system · PWSID MO4010718

ST MARY PWS

ST MARY, MO · ~350 people served

Check your exact address → ST MARY overview
100
Excellent
PurityRadar safety score

PWSID

MO4010718

State

Missouri

City

ST MARY

Population served

350

Primary source

GWP

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

24

Violations on record

0

Unaddressed

21

Health-based

75

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →

Other · EPA contaminant 7000 began Jul 2025 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2012 Resolved
Monitoring & reporting · Total coliform began May 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2011 Resolved

Recent enforcement actions

  • State action · SOX Dec 2025
  • State action · SIF Jul 2024
  • State action · SOX Mar 2014
  • State action · SOX Jan 2014
  • State action · SOX Dec 2013
  • State action · SIF Oct 2013
  • State action · SIF Aug 2013
  • State action · SOX Aug 2013

This profile is built from EPA public records for system MO4010718 — 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.