STANFORD UNIVERSITY

STANFORD, CA · ~35,853 people served

Check your exact address → STANFORD overview

100

Excellent

PurityRadar safety score

PWSID

CA4310013

State

California

City

STANFORD

Population served

35,853

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 Feb 2018. Official EPA record →

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2016 Resolved

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

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

Recent enforcement actions

State action · SOX Feb 2018
State action · SFL Jan 2017
State action · SOX Jul 2000
State action · SFL Apr 1997
State action · SOX Apr 1995
State action · SIA Apr 1995
State action · SO8 Apr 1993
State action · SFL Apr 1992

This profile is built from EPA public records for system CA4310013 — 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.