MAGNOLIA-EDEN ISLES

DES PERES, MO · ~10,155 people served

Check your exact address → DES PERES overview

100

Excellent

PurityRadar safety score

PWSID

LA1103013

State

Missouri

City

DES PERES

Population served

10,155

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

Latest detections from EPA’s UCMR5 monitoring (through Oct 2024). Levels in parts per trillion (ppt).

Lithium

11,300 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2017. Official EPA record →

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

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

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

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

Other · EPA contaminant 7000 began Oct 1999 Resolved

Recent enforcement actions

State action · SOX Jul 2017
State action · SIF Dec 2014
State action · SIA Nov 2014
State action · SIE Nov 2014
State action · SOX Sep 2014
State action · SIF Apr 2013
State action · SIE Mar 2013
State action · SIA Mar 2013

This profile is built from EPA public records for system LA1103013 — 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.