PWSID
CO0149685
State
Illinois
City
NORTHBROOK
Population served
200
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
116
Violations on record
1
Unaddressed
2
Health-based
114
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Feb 2026. Official EPA record →
Recent enforcement actions
- State action · SOX Feb 2026
- State action · SOX Feb 2026
- State action · SIE Jan 2026
- State action · SIA Jan 2026
- State action · SOX Jan 2026
- State action · SIE Jan 2026
- State action · SOX Jan 2026
- State action · SIA Jan 2026
This profile is built from EPA public records for system CO0149685 — 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.