MT. PLEASANT WATER USERS ASSOCIATION

SAN JOSE, CA · ~300 people served

Check your exact address → SAN JOSE overview

100

Excellent

PurityRadar safety score

PWSID

CA4300563

State

California

City

SAN JOSE

Population served

300

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

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2018. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved

Monitoring & reporting · Total coliform began Jun 2014 Resolved

Monitoring & reporting · EPA contaminant 1006 began Jul 2013 Resolved

Monitoring & reporting · Total coliform began Jul 2013 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2000 Resolved

Monitoring & reporting · Total coliform began Nov 1996 Resolved

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

Monitoring & reporting · Total coliform began Feb 1994 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

State action · SOX Jun 2018
State action · SFL Apr 2018
State action · SOX Feb 2018
State action · SOX Feb 2018
State action · SFL Aug 2014
State action · SOX Jul 2014
State action · SOX Aug 2013
State action · SFL Aug 2013

This profile is built from EPA public records for system CA4300563 — 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.