JEFFERSON COUNTY WATER AUTHORITY

FESTUS, MO · ~25 people served

Check your exact address → FESTUS overview

100

Excellent

PurityRadar safety score

PWSID

MO6071352

State

Missouri

City

FESTUS

Population served

Primary source

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2011. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2011 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2011 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2010 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2010 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2010 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2010 Resolved

Recent enforcement actions

State action · SOX Sep 2011
State action · SIF Aug 2011
State action · SIE Aug 2011
State action · SIA Aug 2011
State action · SIF Jun 2011
State action · SIE Jun 2011
State action · SIA Jun 2011
State action · SIF Mar 2011

This profile is built from EPA public records for system MO6071352 — 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.