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Water system · PWSID IL0950450

RIO

RIO, IL · ~265 people served

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

PWSID

IL0950450

State

Illinois

City

RIO

Population served

265

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

24

Violations on record

0

Unaddressed

1

Health-based

45

Enforcement actions

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

Monitoring & reporting · Total coliform began Nov 2008 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 1995 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1994 Resolved
Monitoring & reporting · EPA contaminant 2969 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2977 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2979 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2980 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2981 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2982 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2983 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2984 began Apr 1994 Resolved
Monitoring & reporting · EPA contaminant 2987 began Apr 1994 Resolved

Recent enforcement actions

  • State action · SIF Dec 2009
  • State action · SOX Jun 2009
  • State action · SIE Dec 2008
  • State action · SIA Dec 2008
  • State action · SOX Jan 1997
  • EPA/federal action · EFJ Oct 1995
  • State action · SOX Dec 1994
  • State action · SOX Nov 1994

This profile is built from EPA public records for system IL0950450 — 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.