CALIFORNIA WATER SERVICE CO.-TRAVIS AFB

SAN JOSE, CA · ~18,111 people served

Check your exact address → SAN JOSE overview

100

Excellent

PurityRadar safety score

PWSID

CA4810701

State

California

City

SAN JOSE

Population served

18,111

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

Latest detections from EPA’s UCMR5 monitoring (through Mar 2024). Levels in parts per trillion (ppt).

Lithium

9,900 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2016. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2015 Resolved

Treatment technique · EPA contaminant 0200 health-based began Mar 1999 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 1996 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 1995 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 1994 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 1994 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 1994 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 1993 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 1992 Resolved

Recent enforcement actions

State action · SOX Apr 2016
State action · SFL Dec 2015
State action · SIA May 2000
State action · SOX Apr 1999
State action · SOX Sep 1996
State action · SFJ Aug 1996
State action · SOX Jul 1995
State action · SOX Oct 1994

This profile is built from EPA public records for system CA4810701 — 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.