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Water system · PWSID LA1117127

SANDSTONE LAKE WATER SUPPLY

DES PERES, MO · ~25 people served

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

PWSID

LA1117127

State

Missouri

City

DES PERES

Population served

25

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

22

Violations on record

1

Unaddressed

1

Health-based

49

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2021 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Other · EPA contaminant 7000 began Jul 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2020 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2018 Resolved
Other · EPA contaminant 7500 began Dec 2017 Resolved
Other · EPA contaminant 7000 began Oct 2017 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2017 Resolved
Other · EPA contaminant 7500 began May 2017 Resolved

Recent enforcement actions

  • State action · SOX Dec 2024
  • State action · SOX Dec 2024
  • State action · SIA Nov 2024
  • State action · SOX Nov 2024
  • State action · SIA Nov 2021
  • State action · SOX Dec 2020
  • State action · SIF Oct 2020
  • State action · SIA Aug 2020

This profile is built from EPA public records for system LA1117127 — 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.