RESORT IMPROVEMENT DISTRICT #1

WHITETHORN, CA · ~803 people served

Check your exact address → WHITETHORN overview

100

Excellent

PurityRadar safety score

PWSID

CA1210022

State

California

City

WHITETHORN

Population served

803

Primary source

Surface water

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 Jun 2019. Official EPA record →

Monitoring · Lead & Copper Rule began May 2019 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jan 2006 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 · SFJ Jun 2019
State action · SFL Jun 2019
State action · SOX May 2019
State action · SOX Mar 2018
State action · SIE May 2006
EPA/federal action · EOX Mar 2000
State action · SFK Jul 1994

This profile is built from EPA public records for system CA1210022 — 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.