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Water system · PWSID MI0006320

ST. LOUIS, CITY OF

ST. LOUIS, MI · ~6,976 people served

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

PWSID

MI0006320

State

Michigan

City

ST. LOUIS

Population served

6,976

Primary source

SWP

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

Latest detections from EPA’s UCMR5 monitoring (through Jan 2025). Levels in parts per trillion (ppt).

Lithium

10,000 ppt

limit —

No federal limit

Violations & enforcement

3

Violations on record

0

Unaddressed

1

Health-based

18

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2018. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2001 Resolved

Recent enforcement actions

  • State action · SOX Sep 2018
  • State action · SIF Jun 2018
  • State action · SIE Mar 2018
  • State action · SIA Mar 2018
  • State action · SIA Feb 2016
  • State action · SOX Feb 2016
  • State action · SIF Apr 2002
  • State action · SOX Aug 2001

This profile is built from EPA public records for system MI0006320 — 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.