CS FLAGSTAFF RANCH WATER COMPANY

DES PERES, MO · ~350 people served

Check your exact address → DES PERES overview

100

Excellent

PurityRadar safety score

PWSID

AZ0403088

State

Missouri

City

DES PERES

Population served

350

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

Violations on record

Unaddressed

Health-based

140

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed

Monitoring & reporting · Arsenic began Jul 2025 Resolved

Other · EPA contaminant 7000 began Jul 2025 Resolved

Monitoring & reporting · Arsenic began Jul 2025 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2025 Resolved

Other · EPA contaminant 7500 began Dec 2024 Resolved

Reporting · EPA contaminant 5200 began Oct 2024 Resolved

Other · EPA contaminant 7000 began Oct 2024 Resolved

Other · EPA contaminant 7500 began Oct 2024 Resolved

Monitoring & reporting · Arsenic began Jul 2024 Resolved

Other · EPA contaminant 7500 began Apr 2024 Resolved

Recent enforcement actions

State action · SIE Oct 2025
State action · SIA Oct 2025
State action · SOX Oct 2025
State action · SIE Oct 2025
State action · SIA Oct 2025
State action · SIE Oct 2025
State action · SIA Oct 2025
State action · SIA Oct 2025

This profile is built from EPA public records for system AZ0403088 — 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.