BIG ROCK C.S.D.

CRESCENT CITY, CA · ~650 people served

Check your exact address → CRESCENT CITY overview

100

Excellent

PurityRadar safety score

PWSID

CA0800532

State

California

City

CRESCENT CITY

Population served

650

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 Dec 2022. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2019 Resolved

Monitoring & reporting · Total coliform began Apr 2004 Resolved

Monitoring & reporting · Total coliform began Apr 2001 Resolved

Monitoring & reporting · Total coliform began Feb 2001 Resolved

Monitoring & reporting · Total coliform began Jun 2000 Resolved

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

Treatment technique · EPA contaminant 0200 health-based began Jun 1993 Resolved

Recent enforcement actions

State action · SOX Dec 2022
State action · SFL Feb 2021
State action · SOX Feb 2018
State action · SIE Aug 2004
State action · SOX May 2004
EPA/federal action · EOX Dec 2003
State action · SIE Jun 2001
State action · SOX May 2001

This profile is built from EPA public records for system CA0800532 — 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.