OWENS VALLEY WATER RESOURCES, INC.

CLAREMONT, CA · ~311 people served

Check your exact address → CLAREMONT overview

100

Excellent

PurityRadar safety score

PWSID

CA1400005

State

California

City

CLAREMONT

Population served

311

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

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2016. Official EPA record →

Monitoring & reporting · Total coliform began Feb 2016 Resolved

Monitoring & reporting · Total coliform began Jan 2016 Resolved

Monitoring & reporting · Total coliform began Feb 2013 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2009 Resolved

Monitoring & reporting · Total coliform began Aug 2009 Resolved

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

Recent enforcement actions

State action · SFL Apr 2016
State action · SOX Mar 2016
State action · SFJ Mar 2013
State action · SOX Mar 2013
State action · SOX Sep 2009
State action · SOX Sep 2009
State action · SO8 Sep 2009
State action · SO8 Sep 2009

This profile is built from EPA public records for system CA1400005 — 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.