PALO ALTO PARK MUTUAL WATER COMPANY

EAST PALO ALTO, CA · ~2,900 people served

Check your exact address → EAST PALO ALTO overview

100

Excellent

PurityRadar safety score

PWSID

CA4110020

State

California

City

EAST PALO ALTO

Population served

2,900

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2021. Official EPA record →

Monitoring & reporting · EPA contaminant 3014 began Jun 2018 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2015 Resolved

Monitoring & reporting · Total coliform began Jul 2001 Resolved

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

Recent enforcement actions

State action · SOX Aug 2021
State action · SOX Aug 2021
State action · SFL Jun 2018
State action · SFL Aug 2015
State action · SIA Feb 2009
State action · SOX Aug 2001
State action · SFJ Aug 2001
EPA/federal action · EOX Mar 2000

This profile is built from EPA public records for system CA4110020 — 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.