OCCIDENTAL COMMUNITY SERVICES DISTRICT

OCCIDENTAL, CA · ~533 people served

Check your exact address → OCCIDENTAL overview

100

Excellent

PurityRadar safety score

PWSID

CA4900536

State

California

City

OCCIDENTAL

Population served

533

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 2018. Official EPA record →

Monitoring · Lead & Copper Rule began Sep 2018 Resolved

Other began Jul 2014 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved

Treatment technique · EPA contaminant 0200 health-based began Sep 2003 Resolved

Monitoring & reporting · Total coliform began Jan 2001 Resolved

Monitoring & reporting · EPA contaminant 0200 began Jul 1999 Resolved

Treatment technique · EPA contaminant 0200 health-based began Mar 1995 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jan 1995 Resolved

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

Recent enforcement actions

State action · SOX Nov 2018
State action · SFL Oct 2018
State action · SOX Mar 2018
State action · SOX Jun 2017
State action · SOX Jun 2017
State action · SFO Apr 2016
State action · SOX Sep 2008
State action · SFL Sep 2008

This profile is built from EPA public records for system CA4900536 — 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.