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Water system · PWSID IL1971100

WILMINGTON

WILMINGTON, IL · ~5,700 people served

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

PWSID

IL1971100

State

Illinois

City

WILMINGTON

Population served

5,700

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 Sep 2025). Levels in parts per trillion (ppt).

PFBA

5.7 ppt

limit —

No federal limit

PFPeA

4.5 ppt

limit —

No federal limit

PFHxA

4 ppt

limit —

No federal limit

PFBS

3.1 ppt

limit —

No federal limit

Violations & enforcement

62

Violations on record

1

Unaddressed

5

Health-based

109

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Monitoring & reporting · EPA contaminant 1006 began Feb 2025 Resolved
Monitoring · Lead & Copper Rule began Feb 2025 Resolved
Monitoring & reporting · EPA contaminant 0300 began Feb 2024 Resolved
Monitoring & reporting · EPA contaminant 0200 began Jan 2024 Resolved
Monitoring & reporting · EPA contaminant 0300 began Jan 2024 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2023 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2022 Resolved
Monitoring & reporting · Bromate began Jan 2022 Resolved
Monitoring & reporting · EPA contaminant 0300 began Feb 2016 Resolved

Recent enforcement actions

  • State action · SIF Aug 2025
  • State action · SIF Aug 2025
  • State action · SIE Jul 2025
  • State action · SIA Jul 2025
  • State action · SOX Apr 2025
  • State action · SIA Mar 2025
  • State action · SIA Mar 2025
  • State action · SIE Mar 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

1 station · latest Oct 2022

22.5 · max 85 ug/L · 54

Arsenic

1 station · latest Sep 2022

1.23 · max 2.83 ug/L · 50

Fluoride

1 station · latest Oct 2022

0.16 · max 0.19 mg/L · 28

Atrazine

1 station · latest Oct 2022

0.14 · max 4 ug/L · 21

Copper

1 station · latest Dec 2021

1.1 · max 3.32 ug/L · 18

Lead

1 station · latest Dec 2021

1.22 · max 2.19 ug/L · 9

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 IL1971100 — 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.