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Water system · PWSID MO3024164

COLE COUNTY PWSD 5

ST THOMAS, MO · ~260 people served

Check your exact address → ST THOMAS overview
100
Excellent
PurityRadar safety score

PWSID

MO3024164

State

Missouri

City

ST THOMAS

Population served

260

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

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

17

Violations on record

1

Unaddressed

7

Health-based

48

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2023. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Other · EPA contaminant 7500 began Aug 2023 Resolved
Monitoring · Lead & Copper Rule began Jun 2022 Resolved
Monitoring · Lead & Copper Rule began Apr 2022 Resolved
Treatment technique · Lead & Copper Rule health-based began Nov 2017 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2010 Resolved
Monitoring & reporting · Total coliform began Sep 2008 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2002 Resolved

Recent enforcement actions

  • State action · SIF Oct 2023
  • State action · SOX Oct 2023
  • State action · SIA Aug 2022
  • State action · SIE Aug 2022
  • State action · SOX Jul 2022
  • State action · SIF Jun 2022
  • State action · SOX Jun 2022
  • State action · SIE May 2022

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

Nitrate

1 station · latest Oct 2023

0.271 · max 0.6 mg/l as N · 42

Lead

1 station · latest Dec 2023

0.15 · max 0.44 ug/l · 11

Arsenic

1 station · latest Dec 2023

1.2 · max 1.6 ug/l · 9

Copper

1 station · latest Dec 2023

0.92 · max 1.3 ug/l · 9

Fluoride

1 station · latest Dec 2023

0.1 · max 0.13 mg/l · 9

Manganese

1 station · latest Dec 2023

20.7 · max 70.1 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 MO3024164 — 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.