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Water system · PWSID IL0735200

OSCO MUTUAL WATER SUPPLY COMPANY, INC.

OSCO, IL · ~80 people served

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

PWSID

IL0735200

State

Illinois

City

OSCO

Population served

80

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

12

Violations on record

2

Unaddressed

0

Health-based

64

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Apr 2011 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2008 Resolved
Monitoring & reporting · Total coliform began Feb 2007 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2007 Resolved
Other · EPA contaminant 7500 began Oct 2005 Resolved
Other · EPA contaminant 7500 began Aug 2005 Resolved
Other · EPA contaminant 7500 began Aug 2005 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2004 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2004 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 1993 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SIA Jul 2025
  • State action · SIE Jul 2025
  • State action · SOX Apr 2011
  • State action · SIA Dec 2008
  • State action · SOX Dec 2008
  • State action · SOX Nov 2007
  • State action · SIF Sep 2007

This profile is built from EPA public records for system IL0735200 — 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.