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Water system · PWSID IL1150400

EJ WATER-NIANTIC

DIETERICH, IL · ~648 people served

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

PWSID

IL1150400

State

Illinois

City

DIETERICH

Population served

648

Primary source

GWP

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

11

Violations on record

1

Unaddressed

0

Health-based

41

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2025. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2025 Unaddressed
Other · EPA contaminant 7500 began Oct 2021 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2020 Resolved
Other · EPA contaminant 7000 began Jul 2020 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2020 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2017 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Sep 2017 Resolved
Other · EPA contaminant 7500 began Mar 2006 Resolved
Other · EPA contaminant 7500 began Mar 2006 Resolved
Monitoring & reporting · Total coliform began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2005 Resolved

Recent enforcement actions

  • State action · SIA Jan 2025
  • State action · SIE Jan 2025
  • State action · SOX Jun 2022
  • State action · SIF Jun 2022
  • State action · SIA Nov 2021
  • State action · SOX Nov 2020
  • State action · SIA Oct 2020
  • State action · SIE Oct 2020

This profile is built from EPA public records for system IL1150400 — 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.