PWSID
IL0312010
State
Illinois
City
NILES
Population served
29,350
Primary source
SWP
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
1
Unaddressed
1
Health-based
13
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Sep 2025. Official EPA record →
Recent enforcement actions
- State action · SIA Sep 2025
- State action · SOX Jul 2016
- State action · SIA Jul 2015
- State action · SIF Oct 2014
- State action · SOX Sep 2014
- State action · SIE Sep 2014
- State action · SIA Sep 2014
- State action · SIE Oct 1988
Area water-quality monitoring
Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.
Manganese
1 station · latest Oct 2022
Arsenic
1 station · latest May 2022
Copper
1 station · latest Jun 2022
Fluoride
1 station · latest Oct 2022
Lead
1 station · latest May 2022
Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.
This profile is built from EPA public records for system IL0312010 — 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.