NORTH REGIONAL WATER FAC

DARIEN, IL · ~770 people served

Check your exact address → DARIEN overview

100

Excellent

PurityRadar safety score

PWSID

IL0435850

State

Illinois

City

DARIEN

Population served

770

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 1996. Official EPA record →

Treatment technique · Lead & Copper Rule health-based began Jun 1995 Resolved

Treatment technique · Lead & Copper Rule health-based began Nov 1994 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1994 Resolved

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

Recent enforcement actions

State action · SOX Jun 1996
State action · SOX Aug 1994
State action · SIA Dec 1990
State action · SIE Dec 1990
State action · SIA Nov 1990
State action · SIE Nov 1990
State action · SFG Jun 1990
State action · SIA Mar 1990

This profile is built from EPA public records for system IL0435850 — 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.