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Water system · PWSID MO1010123

CALHOUN PWS

CALHOUN, MO · ~324 people served

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

PWSID

MO1010123

State

Missouri

City

CALHOUN

Population served

324

Primary source

SWP

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

9

Violations on record

0

Unaddressed

5

Health-based

35

Enforcement actions

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

Monitoring · Lead & Copper Rule began Jun 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2009 Resolved
Monitoring & reporting · Total coliform began Aug 2005 Resolved
Monitoring & reporting · Total coliform began Feb 2001 Resolved
Monitoring & reporting · Total coliform began Apr 1999 Resolved

Recent enforcement actions

  • State action · SIF Jun 2020
  • State action · SOX Jan 2020
  • State action · SIE Jul 2019
  • State action · SIA Jul 2019
  • State action · SOX Jan 2017
  • State action · SIF Dec 2016
  • State action · SFJ Nov 2016
  • State action · SIE Nov 2016

This profile is built from EPA public records for system MO1010123 — 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.