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Water system · PWSID CA1710005

LUCERNE WATER CO. - CAL WATER SERVICE

SAN JOSE, CA · ~2,129 people served

Check your exact address → SAN JOSE overview
100
Excellent
PurityRadar safety score

PWSID

CA1710005

State

California

City

SAN JOSE

Population served

2,129

Primary source

Surface water

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

Lithium

14,000 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

0

Unaddressed

3

Health-based

8

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2007. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2006 Resolved
Treatment technique · EPA contaminant 2257 health-based began Nov 2002 Resolved
Treatment technique · EPA contaminant 0300 health-based began Nov 2002 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SOX Sep 2007
  • State action · SFL Aug 2007
  • State action · SOX Aug 2007
  • State action · SFL Sep 2006
  • State action · SOX Dec 2003
  • State action · SFL Dec 2002
  • EPA/federal action · EOX Mar 2000
  • EPA/federal action · EF! Sep 1995

This profile is built from EPA public records for system CA1710005 — 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.