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Water system · PWSID IL1090200

COLCHESTER

COLCHESTER, IL · ~1,395 people served

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

PWSID

IL1090200

State

Illinois

City

COLCHESTER

Population served

1,395

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

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

27

Violations on record

0

Unaddressed

23

Health-based

109

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2009. Official EPA record →

Monitoring & reporting · Total coliform began Jan 2009 Resolved
Treatment technique · EPA contaminant 0300 health-based began Mar 2008 Resolved
Other · EPA contaminant 7500 began Feb 2008 Resolved
Treatment technique · EPA contaminant 0300 health-based began Feb 2008 Resolved
Treatment technique · EPA contaminant 0300 health-based began Feb 2008 Resolved
Treatment technique · EPA contaminant 0300 health-based began Dec 2007 Resolved
Treatment technique · EPA contaminant 0300 health-based began Dec 2007 Resolved
Treatment technique · EPA contaminant 0300 health-based began May 2007 Resolved
Treatment technique · EPA contaminant 0300 health-based began Apr 2007 Resolved
Treatment technique · EPA contaminant 0300 health-based began Mar 2007 Resolved
Treatment technique · EPA contaminant 0300 health-based began Mar 2007 Resolved
Treatment technique · EPA contaminant 0300 health-based began Aug 2006 Resolved

Recent enforcement actions

  • State action · SOX Aug 2009
  • State action · SIA Feb 2009
  • State action · SOX May 2008
  • State action · SIF May 2008
  • State action · SIF Apr 2008
  • State action · SIA Apr 2008
  • State action · SIE Apr 2008
  • State action · SO6 Apr 2008

This profile is built from EPA public records for system IL1090200 — 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.