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Water system · PWSID IL1970200

CHANNAHON

CHANNAHON, IL · ~13,380 people served

Check your exact address → CHANNAHON overview
72
Good
PurityRadar safety score

PWSID

IL1970200

State

Illinois

City

CHANNAHON

Population served

13,380

Primary source

Groundwater

Score history

▼ 28 points — the score moved from 100 to 72 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 72

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 Dec 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

5.4 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFOA

Perfluorooctanoic acid

4.6 ppt

limit 4 ppt

Above EPA limit · 1.1×

Lithium

62,000 ppt

limit —

No federal limit

PFBS

17 ppt

limit —

No federal limit

PFPeA

13 ppt

limit —

No federal limit

PFBA

9.9 ppt

limit —

No federal limit

PFHxA

8.6 ppt

limit —

No federal limit

Violations & enforcement

18

Violations on record

0

Unaddressed

16

Health-based

80

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2024. Official EPA record →

Other · EPA contaminant 7000 began Jul 2023 Resolved
Other · EPA contaminant 7000 began Jul 2016 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 Jul 2004 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2004 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2004 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2003 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2003 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2003 Resolved
Max contaminant level (MCL) · Uranium health-based began Jan 2003 Resolved
Max contaminant level (MCL) · Uranium health-based began Oct 2002 Resolved

Recent enforcement actions

  • State action · SOX Jan 2024
  • State action · SIA Dec 2023
  • State action · SOX Jun 2017
  • State action · SIA Jul 2016
  • State action · SIE May 2005
  • State action · SIA May 2005
  • State action · SIF May 2005
  • State action · SOX Apr 2005

This profile is built from EPA public records for system IL1970200 — 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.