OAKMONT WATER SYSTEM

STOCKTON, CA · ~61 people served

Check your exact address → STOCKTON overview

100

Excellent

PurityRadar safety score

PWSID

CA4300526

State

California

City

STOCKTON

Population served

Primary source

SWP

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 2021. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2020 Resolved

Monitoring & reporting · Total coliform began Aug 2008 Resolved

Monitoring & reporting · Total coliform began Sep 1994 Resolved

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

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

Recent enforcement actions

State action · SOX Jun 2021
State action · SFL Nov 2020
State action · SOX Dec 2008
State action · SFL Oct 2008
EPA/federal action · EOX Mar 2000
State action · SOX Oct 1994
State action · SIA Oct 1994
State action · SIE Jul 1993

This profile is built from EPA public records for system CA4300526 — 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.