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Water system · PWSID CA3901474

FREMONT ONE

STOCKTON, CA · ~39 people served

Check your exact address → STOCKTON overview
100
Excellent
PurityRadar safety score

PWSID

CA3901474

State

California

City

STOCKTON

Population served

39

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

3

Violations on record

0

Unaddressed

3

Health-based

6

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2010. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jan 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2009 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2009 Resolved

Recent enforcement actions

  • State action · SOX Feb 2010
  • State action · SIE Feb 2010
  • State action · SOX Jul 2009
  • State action · SIE Jul 2009
  • State action · SOX Jun 2009
  • State action · SIE Jun 2009

This profile is built from EPA public records for system CA3901474 — 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.