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Water system · PWSID IL1115750

WONDER LAKE

WONDER LAKE, IL · ~3,870 people served

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

PWSID

IL1115750

State

Illinois

City

WONDER LAKE

Population served

3,870

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

10

Violations on record

1

Unaddressed

1

Health-based

35

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jul 2025 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Apr 2025 Resolved
Other · EPA contaminant 7500 began Feb 2024 Resolved
Treatment technique · Lead & Copper Rule health-based began Apr 2023 Resolved
Monitoring & reporting · Nitrate began Jan 2022 Resolved
Other · EPA contaminant 7500 began Mar 2005 Resolved
Other · EPA contaminant 7500 began Mar 2005 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2004 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2004 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2004 Resolved

Recent enforcement actions

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

This profile is built from EPA public records for system IL1115750 — 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.