CALIFORNIA WATER SERVICE - LIVERMORE

SAN JOSE, CA · ~60,414 people served

Check your exact address → SAN JOSE overview

Fair

PurityRadar safety score

PWSID

CA0110003

State

California

City

SAN JOSE

Population served

60,414

Primary source

SWP

Score history

▼ 54 points — the score moved from 100 to 46 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 46

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 Jul 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

12 ppt

limit 4 ppt

Above EPA limit · 3.0×

PFOA

Perfluorooctanoic acid

4.8 ppt

limit 4 ppt

Above EPA limit · 1.2×

PFHxS

Perfluorohexanesulfonic acid

9.8 ppt

limit 10 ppt

Near EPA limit

Lithium

9,060 ppt

limit —

No federal limit

PFBS

4.2 ppt

limit —

No federal limit

PFHxA

3.8 ppt

limit —

No federal limit

PFPeA

3.5 ppt

limit —

No federal limit

Violations & enforcement

No violations are on record for this system in EPA’s SDWIS/ECHO data.

This profile is built from EPA public records for system CA0110003 — 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.