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Water system · PWSID IL1710010

EXETER-MERRITT WATER COOP

WINCHESTER, IL · ~820 people served

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

PWSID

IL1710010

State

Illinois

City

WINCHESTER

Population served

820

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

10

Violations on record

0

Unaddressed

5

Health-based

31

Enforcement actions

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

Other · EPA contaminant 7500 began Mar 2025 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2024 Resolved
Monitoring & reporting · Total coliform began Jun 2014 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2010 Resolved
Monitoring & reporting · Total coliform began Jun 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2010 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1995 Resolved

Recent enforcement actions

  • State action · SIF May 2025
  • State action · SOX May 2025
  • State action · SIA Apr 2025
  • State action · SOX Mar 2025
  • State action · SIA Dec 2024
  • State action · SIE Dec 2024
  • State action · SFL Nov 2024
  • State action · SIF Sep 2024

This profile is built from EPA public records for system IL1710010 — 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.