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Water system · PWSID MO3010155

CHAMOIS PWS

CHAMOIS, MO · ~396 people served

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

PWSID

MO3010155

State

Missouri

City

CHAMOIS

Population served

396

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

36

Violations on record

0

Unaddressed

4

Health-based

41

Enforcement actions

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

Monitoring · Lead & Copper Rule began Sep 2023 Resolved
Monitoring · Lead & Copper Rule began Apr 2023 Resolved
Treatment technique · EPA contaminant 0400 health-based began Nov 2022 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2021 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2021 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2020 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Monitoring & reporting · Total coliform began Jan 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2004 Resolved
Other · EPA contaminant 7000 began Jul 2003 Resolved

Recent enforcement actions

  • State action · SOX Sep 2024
  • State action · SOX Aug 2024
  • State action · SIF Jan 2024
  • State action · SIF Jan 2024
  • State action · SIF Jan 2024
  • State action · SOX Jan 2024
  • State action · SIE Dec 2023
  • State action · SIA Dec 2023

This profile is built from EPA public records for system MO3010155 — 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.