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Water system · PWSID IL0975736

ELM OAK MUTUAL WATER SYSTEM

LAKE FOREST, IL · ~50 people served

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

PWSID

IL0975736

State

Illinois

City

LAKE FOREST

Population served

50

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

68

Violations on record

0

Unaddressed

45

Health-based

223

Enforcement actions

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

Other · EPA contaminant 7500 began Feb 2024 Resolved
Other · EPA contaminant 7500 began Feb 2024 Resolved
Monitoring & reporting · Uranium began Jan 2020 Resolved
Other · EPA contaminant 7500 began Nov 2019 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2019 Resolved
Other · EPA contaminant 7500 began Jul 2019 Resolved
Other · EPA contaminant 7500 began Jul 2019 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2019 Resolved
Monitoring & reporting · Combined radium-226/228 began Apr 2019 Resolved
Monitoring & reporting · Uranium began Apr 2019 Resolved
Monitoring & reporting · Uranium began Jan 2019 Resolved
Monitoring · Lead & Copper Rule began Jun 2018 Resolved

Recent enforcement actions

  • State action · SIF Jul 2025
  • State action · SIF Jul 2025
  • State action · SOX Jul 2025
  • State action · SOX Jul 2025
  • State action · SIA Mar 2024
  • State action · SIA Mar 2024
  • State action · SOX Jul 2023
  • State action · SIE Feb 2023

This profile is built from EPA public records for system IL0975736 — 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.