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Water system · PWSID MI0040497

THREE MILE LAKE TRAILER PARK

CHICAGO, IL · ~112 people served

Check your exact address → CHICAGO overview
100
Excellent
PurityRadar safety score

PWSID

MI0040497

State

Illinois

City

CHICAGO

Population served

112

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

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

8

Violations on record

0

Unaddressed

5

Health-based

50

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2016. Official EPA record →

Monitoring & reporting · Total coliform began Aug 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2001 Resolved
Monitoring & reporting · Total coliform began Aug 1997 Resolved

Recent enforcement actions

  • State action · SIA Jan 2016
  • State action · SIE Jan 2016
  • State action · SIF Dec 2015
  • State action · SOX Sep 2015
  • State action · SOX Jul 2015
  • State action · SIA Jul 2015
  • State action · SIE Jul 2015
  • State action · SFH Jul 2015

This profile is built from EPA public records for system MI0040497 — 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.