MARENGO

MARENGO, IL · ~7,572 people served

Check your exact address → MARENGO overview

100

Excellent

PurityRadar safety score

PWSID

IL1110650

State

Illinois

City

MARENGO

Population served

7,572

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

PFBS

7.1 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2009. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2009 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2000 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1993 Resolved

Recent enforcement actions

State action · SOX Dec 2009
State action · SIA Oct 2009
State action · SOX Jun 2001
State action · SOX Dec 1995
State action · SIE Sep 1983
State action · SIA Sep 1983
State action · SIA Sep 1983
State action · SIE Sep 1983

This profile is built from EPA public records for system IL1110650 — 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.