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Water system · PWSID CA1500374

CWS-GRAND OAKS WATER SYSTEM

SAN JOSE, CA · ~122 people served

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

PWSID

CA1500374

State

California

City

SAN JOSE

Population served

122

Primary source

Groundwater

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

4

Violations on record

0

Unaddressed

2

Health-based

6

Enforcement actions

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

Max contaminant level (MCL) · Total coliform health-based began Nov 1996 Resolved
Monitoring & reporting · Total coliform began Mar 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1993 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SOX Jan 2019
  • EPA/federal action · EOX Dec 2003
  • State action · SOX Dec 1996
  • State action · SFJ Dec 1996
  • State action · SOX Dec 1993
  • State action · SFJ Dec 1993

This profile is built from EPA public records for system CA1500374 — 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.