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Water system · PWSID IL1790100

CREVE COEUR

CREVE COEUR, IL · ~4,934 people served

Check your exact address → CREVE COEUR overview
100
Excellent
PurityRadar safety score

PWSID

IL1790100

State

Illinois

City

CREVE COEUR

Population served

4,934

Primary source

Groundwater

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 Oct 2025). Levels in parts per trillion (ppt).

Lithium

12,000 ppt

limit —

No federal limit

Violations & enforcement

10

Violations on record

0

Unaddressed

2

Health-based

43

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2017. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2017 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2015 Resolved
Monitoring & reporting · Total coliform began Nov 2014 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2014 Resolved
Monitoring & reporting · Total coliform began Mar 2014 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2014 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2012 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2008 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2005 Resolved

Recent enforcement actions

  • State action · SOX Jan 2017
  • State action · SIA Jan 2017
  • State action · SIF Nov 2015
  • State action · SIA Oct 2015
  • State action · SIE Oct 2015
  • State action · SOX Oct 2015
  • State action · SIF Apr 2015
  • State action · SIF Apr 2015

This profile is built from EPA public records for system IL1790100 — 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.