TWAIN HARTE COMMUNITY SERVICES DISTRICT

TWAIN HARTE, CA · ~2,378 people served

Check your exact address → TWAIN HARTE overview

100

Excellent

PurityRadar safety score

PWSID

CA5510005

State

California

City

TWAIN HARTE

Population served

2,378

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 Sep 2025. Official EPA record →

Monitoring · Lead & Copper Rule began Apr 2025 Resolved

Treatment technique · Bromate health-based began Jul 2004 Resolved

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

Recent enforcement actions

State action · SOX Sep 2025
State action · SFJ Aug 2025
State action · SOX Aug 2005
State action · SFJ Aug 2005
State action · SOX Apr 1995
State action · SFJ Apr 1995

This profile is built from EPA public records for system CA5510005 — 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.