Home/ Directory/ MO/ CS TIERRA MESA ESTATES WATER COMPANY

Water system · PWSID AZ0414080

CS TIERRA MESA ESTATES WATER COMPANY

DES PERES, MO · ~632 people served

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

PWSID

AZ0414080

State

Missouri

City

DES PERES

Population served

632

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 Sep 2023). Levels in parts per trillion (ppt).

Lithium

153,000 ppt

limit —

No federal limit

Violations & enforcement

148

Violations on record

0

Unaddressed

1

Health-based

162

Enforcement actions

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

Other · EPA contaminant 7500 began Jun 2025 Resolved
Other · EPA contaminant 7500 began Jun 2025 Resolved
Other · EPA contaminant 7500 began Feb 2025 Resolved
Monitoring & reporting · Combined radium-226/228 began Jan 2025 Resolved
Other · EPA contaminant 7500 began Nov 2024 Resolved
Monitoring & reporting · Combined radium-226/228 began Oct 2024 Resolved
Monitoring · Lead & Copper Rule began Jan 2024 Resolved
Monitoring & reporting · Combined radium-226/228 began Jan 2024 Resolved
Other · EPA contaminant 7500 began Apr 2023 Resolved
Other · EPA contaminant 7500 began Oct 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2022 Resolved
Other · EPA contaminant 7500 began Jul 2022 Resolved

Recent enforcement actions

  • State action · SIA Sep 2025
  • State action · SIA Sep 2025
  • State action · SOX Sep 2025
  • State action · SOX Sep 2025
  • State action · SOX Sep 2025
  • State action · SOX Jul 2025
  • State action · SIA May 2025
  • State action · SIA Mar 2025

This profile is built from EPA public records for system AZ0414080 — 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.