BAR-LEN MWC

BARSTOW, CA · ~126 people served

Check your exact address → BARSTOW overview

Excellent

PurityRadar safety score

PWSID

CA3600025

State

California

City

BARSTOW

Population served

126

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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

Lithium

79,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7500 began Dec 2025 Unaddressed

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed

Monitoring & reporting · Lead & Copper Rule began Oct 2023 Unaddressed

Other · EPA contaminant 7000 began Jul 2022 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2021 Addressed

Monitoring & reporting · Arsenic began Jan 2012 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

State action · SOX Jul 2025
State action · SFL Oct 2022
State action · SFL Nov 2021
State action · SOX Jun 2012
State action · SFL Jun 2011
EPA/federal action · EOX Sep 2005

This profile is built from EPA public records for system CA3600025 — 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.