CITY OF SAN JOSE - NSJ/ALVISO

SAN JOSE, CA · ~45,559 people served

Check your exact address → SAN JOSE overview

100

Excellent

PurityRadar safety score

PWSID

CA4310019

State

California

City

SAN JOSE

Population served

45,559

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 Sep 2023). Levels in parts per trillion (ppt).

Lithium

9,200 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Apr 2008 Resolved

Monitoring & reporting · Total coliform began Dec 2005 Resolved

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

Treatment technique · EPA contaminant 0200 health-based began Apr 1992 Resolved

Recent enforcement actions

State action · SOX Jan 2019
State action · SOX May 2008
State action · SFL Apr 2008
State action · SFL Apr 1997
State action · SOX Apr 1995
State action · SIA Apr 1995
State action · SIA Sep 1993
State action · SFL Apr 1993

This profile is built from EPA public records for system CA4310019 — 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.