CS OAK CREEK PUBLIC SERVICE LLC

DES PERES, MO · ~650 people served

Check your exact address → DES PERES overview

100

Excellent

PurityRadar safety score

PWSID

AZ0413042

State

Missouri

City

DES PERES

Population served

650

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

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

126

Violations on record

Unaddressed

Health-based

146

Enforcement actions

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

Monitoring & reporting · Arsenic began Jul 2025 Resolved

Monitoring & reporting · Arsenic began Jan 2024 Resolved

Other · EPA contaminant 7000 began Oct 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2023 Resolved

Reporting · Lead & Copper Rule began May 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2023 Resolved

Reporting · Lead & Copper Rule began Sep 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2020 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2018 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2018 Resolved

Recent enforcement actions

State action · SOX Nov 2025
State action · SIE Oct 2025
State action · SIA Oct 2025
State action · SOX Jun 2024
State action · SOX Jun 2024
State action · SIA May 2024
State action · SOX Feb 2024
State action · SIA Feb 2024

This profile is built from EPA public records for system AZ0413042 — 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.