MAGNOLIA-TREWHILL

DES PERES, MO · ~207 people served

Check your exact address → DES PERES overview

100

Excellent

PurityRadar safety score

PWSID

LA1055148

State

Missouri

City

DES PERES

Population served

207

Primary source

GWP

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 Aug 2017. Official EPA record →

Monitoring & reporting · Total coliform began May 2014 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2014 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Sep 2013 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2013 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jun 2013 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jun 2013 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Mar 2013 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Mar 2013 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Dec 2012 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Dec 2012 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2012 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Sep 2012 Resolved

Recent enforcement actions

State action · SOX Aug 2017
State action · SOX Sep 2014
State action · SOX Sep 2014
State action · SIF Aug 2014
State action · SIF Aug 2014
State action · SIE Jun 2014
State action · SIA Jun 2014
State action · SIA Jun 2014

This profile is built from EPA public records for system LA1055148 — 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.