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Water system · PWSID IL0312190

OAK FOREST

OAK FOREST, IL · ~27,478 people served

Check your exact address → OAK FOREST overview
100
Excellent
PurityRadar safety score

PWSID

IL0312190

State

Illinois

City

OAK FOREST

Population served

27,478

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

Latest detections from EPA’s UCMR5 monitoring (through Aug 2024). Levels in parts per trillion (ppt).

PFBA

9.3 ppt

limit —

No federal limit

Violations & enforcement

8

Violations on record

2

Unaddressed

0

Health-based

22

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 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 Dec 2020 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Other · EPA contaminant 7000 began Jul 2009 Resolved
Other · EPA contaminant 7000 began Sep 2008 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved

Recent enforcement actions

  • State action · SIA Sep 2025
  • State action · SIE Jul 2025
  • State action · SIA Jul 2025
  • State action · SOX Feb 2021
  • State action · SIA Jan 2021
  • State action · SIA Oct 2019
  • State action · SOX Jul 2019
  • State action · SOX Aug 2016

This profile is built from EPA public records for system IL0312190 — 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.