Home/ Directory/ IL/ EJ WATER COOPERATIVE

Water system · PWSID IL0790010

EJ WATER COOPERATIVE

DIETERICH, IL · ~29,720 people served

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

PWSID

IL0790010

State

Illinois

City

DIETERICH

Population served

29,720

Primary source

Surface water

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

Latest detections from EPA’s UCMR5 monitoring (through Jun 2024). Levels in parts per trillion (ppt).

PFBA

6.2 ppt

limit —

No federal limit

Violations & enforcement

26

Violations on record

1

Unaddressed

1

Health-based

51

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Monitoring & reporting · EPA contaminant 3015 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 3014 began Apr 2025 Resolved
Monitoring & reporting · EPA contaminant 0100 began Apr 2025 Resolved
Monitoring & reporting · EPA contaminant 3015 began Apr 2025 Resolved
Monitoring & reporting · EPA contaminant 0100 began Dec 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Dec 2024 Resolved
Monitoring & reporting · EPA contaminant 0100 began Nov 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Nov 2024 Resolved
Monitoring & reporting · EPA contaminant 1009 began Nov 2024 Resolved
Monitoring & reporting · EPA contaminant 3015 began Nov 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Oct 2024 Resolved

Recent enforcement actions

  • State action · SIF Oct 2025
  • State action · SIF Oct 2025
  • State action · SIA Sep 2025
  • State action · SIA Sep 2025
  • State action · SIE Sep 2025
  • State action · SIE Sep 2025
  • State action · SIF Aug 2025
  • State action · SIF Aug 2025

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.

ContaminantMedian · max · samples

Manganese

29 stations · latest Oct 2022

132 · max 1,330 ug/L · 247

Arsenic

26 stations · latest Sep 2022

1.44 · max 59.7 ug/L · 222

Copper

11 stations · latest May 2022

1.33 · max 55.6 ug/L · 94

Lead

11 stations · latest Jun 2022

1.33 · max 59.4 ug/L · 72

Fluoride

24 stations · latest Jul 2022

0.2 · max 0.32 mg/L · 37

Atrazine

4 stations · latest Jul 2022

0.82 · max 2.2 ug/L · 11

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 IL0790010 — 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.