BIG OAK MOBILE HOME PARK WATER

OAKLEY, CA · ~156 people served

Check your exact address → OAKLEY overview

100

Excellent

PurityRadar safety score

PWSID

CA0707588

State

California

City

OAKLEY

Population served

156

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 Nov 2014. Official EPA record →

Monitoring & reporting · Total coliform began Aug 2014 Resolved

Monitoring & reporting · Thallium began Jan 2012 Resolved

Monitoring & reporting · Total coliform began May 2009 Resolved

Monitoring & reporting · Total coliform began Jul 2008 Resolved

Recent enforcement actions

State action · SFJ Nov 2014
State action · SOX Sep 2014
State action · SOX Dec 2013
State action · SFJ Jan 2013
State action · SOX Jun 2009
State action · SFJ Jun 2009
State action · SOX Aug 2008
State action · SFJ Aug 2008

This profile is built from EPA public records for system CA0707588 — 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.