CALHOUN COUNTY RWD

HARDIN, IL · ~4,675 people served

Check your exact address → HARDIN overview

100

Excellent

PurityRadar safety score

PWSID

IL0130010

State

Illinois

City

HARDIN

Population served

4,675

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

Latest detections from EPA’s UCMR5 monitoring (through Nov 2025). Levels in parts per trillion (ppt).

Lithium

36,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2020. Official EPA record →

Other · EPA contaminant 7500 began Sep 2020 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2020 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2008 Resolved

Monitoring & reporting · Total coliform began Dec 2007 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2007 Resolved

Monitoring & reporting · Total coliform began Jun 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2006 Resolved

Monitoring & reporting · Nitrate began Jan 2002 Resolved

Recent enforcement actions

State action · SFK Nov 2020
State action · SIA Oct 2020
State action · SOX Oct 2020
State action · SIF Sep 2020
State action · SOX Sep 2020
State action · SFJ Aug 2020
State action · SIE Aug 2020
State action · SIA Aug 2020

This profile is built from EPA public records for system IL0130010 — 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.