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Water system · PWSID IL0970850

LAKE ZURICH

LAKE ZURICH, IL · ~19,759 people served

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

PWSID

IL0970850

State

Illinois

City

LAKE ZURICH

Population served

19,759

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

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

Lithium

21,400 ppt

limit —

No federal limit

PFHxA

3.5 ppt

limit —

No federal limit

PFPeA

3.5 ppt

limit —

No federal limit

Violations & enforcement

37

Violations on record

0

Unaddressed

35

Health-based

142

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2024. Official EPA record →

Monitoring & reporting · Uranium began Oct 2023 Resolved
Monitoring & reporting · Uranium began Jan 2023 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2009 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2009 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2008 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2008 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2008 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2007 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2007 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2007 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2007 Resolved

Recent enforcement actions

  • State action · SOX Dec 2024
  • State action · SOX Oct 2024
  • State action · SIF Jun 2024
  • State action · SIF Jun 2024
  • State action · SIE Jan 2024
  • State action · SIA Jan 2024
  • State action · SIA Jan 2024
  • State action · SIE Jan 2024

This profile is built from EPA public records for system IL0970850 — 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.