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Water system · PWSID LA1055137

MAGNOLIA-MARKRIDGE PARK SUBDIVISION

DES PERES, MO · ~468 people served

Check your exact address → DES PERES overview
100
Excellent
PurityRadar safety score

PWSID

LA1055137

State

Missouri

City

DES PERES

Population served

468

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

15

Violations on record

0

Unaddressed

1

Health-based

31

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2021. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Apr 2016 Resolved
Other · Lead & Copper Rule began Apr 2016 Resolved
Other · EPA contaminant 7500 began Oct 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2015 Resolved
Other · EPA contaminant 7500 began Mar 2014 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2013 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Sep 2013 Resolved
Other · EPA contaminant 7500 began Jul 2013 Resolved
Monitoring & reporting · EPA contaminant 0600 began Jan 2013 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2013 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2013 Resolved
Treatment technique · EPA contaminant 0700 health-based began Dec 2011 Resolved

Recent enforcement actions

  • State action · SOX Jan 2021
  • State action · SOX Sep 2018
  • State action · SOX Aug 2017
  • State action · SOX Jun 2016
  • State action · SIA May 2016
  • EPA/federal action · EOX Mar 2016
  • State action · SIF Jan 2016
  • State action · SOX Jan 2016

This profile is built from EPA public records for system LA1055137 — 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.