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Water system · PWSID IL0970200

FOX LAKE

86
Excellent
PurityRadar safety score

PWSID

IL0970200

State

Illinois

City

INGLESIDE

Population served

11,780

Primary source

Groundwater

Score history

▼ 14 points — the score moved from 100 to 86 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 86

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).

PFOS

Perfluorooctanesulfonic acid

5 ppt

limit 4 ppt

Above EPA limit · 1.3×

Lithium

9,930 ppt

limit —

No federal limit

PFPeA

3.5 ppt

limit —

No federal limit

Violations & enforcement

8

Violations on record

1

Unaddressed

1

Health-based

28

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Jul 2005 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2981 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jan 2003 Resolved
Monitoring & reporting · Nitrate began Jan 1993 Resolved
Monitoring & reporting · Nitrite began Jan 1993 Resolved
Treatment technique · Lead & Copper Rule health-based began Dec 1992 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SOX Jan 2006
  • State action · SIA Jan 2006
  • State action · SIF Jun 2003
  • State action · SIF Jun 2003
  • State action · SIF Jun 2003
  • State action · SIA May 2003
  • State action · SIA May 2003

This profile is built from EPA public records for system IL0970200 — 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.