IONE BAND OF MIWOK INDIANS

PLYMOUTH, CA · ~40 people served

Check your exact address → PLYMOUTH overview

100

Excellent

PurityRadar safety score

PWSID

CA0300078

State

California

City

PLYMOUTH

Population served

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 Jul 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2022 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2013 Resolved

Monitoring & reporting · Total coliform began Sep 2006 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2006 Resolved

Recent enforcement actions

State action · SOX Jul 2024
State action · SFL Nov 2022
State action · SOX Nov 2013
State action · SIA Oct 2013
State action · SOX Oct 2006
State action · SIA Oct 2006
State action · SOX Aug 2006
State action · SIA Jul 2006

This profile is built from EPA public records for system CA0300078 — 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.