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Water system · PWSID IL0991050

SENECA

SENECA, IL · ~2,353 people served

Check your exact address → SENECA overview
100
Excellent
PurityRadar safety score

PWSID

IL0991050

State

Illinois

City

SENECA

Population served

2,353

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

13

Violations on record

0

Unaddressed

9

Health-based

119

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2017. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Sep 2015 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2005 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2005 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2005 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2005 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2004 Resolved
Monitoring & reporting · Uranium began Jul 2003 Resolved
Monitoring & reporting · Uranium began Jan 2003 Resolved
Max contaminant level (MCL) · Uranium health-based began Sep 2000 Resolved
Max contaminant level (MCL) · Uranium health-based began Aug 1993 Resolved
Max contaminant level (MCL) · Uranium health-based began Aug 1989 Resolved

Recent enforcement actions

  • State action · SIF May 2017
  • State action · SIE Oct 2016
  • State action · SIA Oct 2016
  • State action · SOX Sep 2007
  • State action · SIF Feb 2006
  • State action · SIA Jan 2006
  • State action · SIE Jan 2006
  • State action · SOX Dec 2005

This profile is built from EPA public records for system IL0991050 — 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.