PWSID
WI2671738
State
Illinois
City
NORTHBROOK
Population served
250
Primary source
Groundwater
Score history
No change since tracking began Jun 18, 2026.
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
3
Violations on record
0
Unaddressed
1
Health-based
10
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Nov 2023. Official EPA record →
Recent enforcement actions
- State action · SOX Nov 2023
- State action · SIA Nov 2023
- State action · SOX Nov 2023
- State action · SIA Nov 2023
- State action · SOX Oct 2011
- State action · SIF Oct 2011
- State action · SIE Oct 2011
- State action · SFH Oct 2011
This profile is built from EPA public records for system WI2671738 — 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.