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Water system · PWSID IL1870150

MONMOUTH

MONMOUTH, IL · ~8,902 people served

Check your exact address → MONMOUTH overview
100
Excellent
PurityRadar safety score

PWSID

IL1870150

State

Illinois

City

MONMOUTH

Population served

8,902

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 Dec 2023). Levels in parts per trillion (ppt).

Lithium

190,000 ppt

limit —

No federal limit

Violations & enforcement

27

Violations on record

0

Unaddressed

26

Health-based

162

Enforcement actions

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

Other · EPA contaminant 7500 began Nov 2024 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2024 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2005 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Jul 2005 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Apr 2005 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2005 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2005 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Jan 2005 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2004 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2004 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2004 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2004 Resolved

Recent enforcement actions

  • State action · SOX Mar 2025
  • State action · SIF Dec 2024
  • State action · SIA Dec 2024
  • State action · SOX Nov 2024
  • State action · SFJ Nov 2024
  • State action · SIA Oct 2024
  • State action · SIE Oct 2024
  • State action · SIF Oct 2005

This profile is built from EPA public records for system IL1870150 — 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.