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Water system · PWSID MO5048992

WALKER MHP

HOLLISTER, MO · ~52 people served

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

PWSID

MO5048992

State

Missouri

City

HOLLISTER

Population served

52

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

15

Violations on record

1

Unaddressed

6

Health-based

50

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Monitoring & reporting · EPA contaminant 3014 began Apr 2023 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2014 Resolved
Other · EPA contaminant 7500 began Nov 2013 Resolved
Monitoring & reporting · EPA contaminant 3014 began Oct 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2013 Resolved
Monitoring & reporting · Total coliform began Jul 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2009 Resolved
Monitoring & reporting · Total coliform began Aug 2003 Resolved
Monitoring & reporting · Total coliform began Oct 1999 Resolved
Monitoring & reporting · Total coliform began Jun 1995 Resolved

Recent enforcement actions

  • State action · SIF May 2023
  • State action · SIA Apr 2023
  • State action · SIE Apr 2023
  • State action · SOX Apr 2023
  • State action · SOX Apr 2023
  • State action · SIA Nov 2021
  • State action · SOX Mar 2015
  • State action · SIF Jan 2015

This profile is built from EPA public records for system MO5048992 — 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.