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Water system · PWSID MO3010720

ST ROBERT PWS

ST ROBERT, MO · ~5,192 people served

Check your exact address → ST ROBERT overview
67
Fair
PurityRadar safety score

PWSID

MO3010720

State

Missouri

City

ST ROBERT

Population served

5,192

Primary source

Groundwater

Score history

▼ 33 points — the score moved from 100 to 67 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 67

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 Dec 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

10 ppt

limit 4 ppt

Above EPA limit · 2.5×

Violations & enforcement

27

Violations on record

2

Unaddressed

19

Health-based

76

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2025. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Jul 2024 Unaddressed
Other · EPA contaminant 7500 began Jul 2025 Resolved
Monitoring · Lead & Copper Rule began Jun 2024 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2014 Resolved
Other · EPA contaminant 7000 began Jul 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2006 Resolved

Recent enforcement actions

  • State action · SIF Sep 2025
  • State action · SOX Sep 2025
  • State action · SFJ Nov 2024
  • State action · SIA Jul 2024
  • State action · SIE Jul 2024
  • State action · SOX Jul 2024
  • State action · SOX Nov 2023
  • State action · SFJ Oct 2023

This profile is built from EPA public records for system MO3010720 — 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.