Does East Palo Alto, CA tap water have any EPA-reported violations?

As of June 2026, EPA SDWIS records show 3 violation(s) across the community water systems serving East Palo Alto, of which 2 are classified by the EPA as health-based. Most older violations have returned to compliance; see the per-system list.

Where does East Palo Alto, CA tap water come from?

East Palo Alto is served by 2 active community water system(s). Their primary sources, per EPA records, are: surface water, groundwater.

CA / East Palo Alto

CA · Tap water records

East Palo Alto tap water, in plain English

Here is what the EPA's own data shows about tap water in East Palo Alto. According to EPA SDWIS data retrieved June 2026, East Palo Alto is served by 2 active community water systems, together reported to serve about 32,419 people.

As of June 2026, EPA records show 3 violations across the community water system(s) serving East Palo Alto, going back to the earliest EPA record. 2 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.

2

Community water systems
~32,419

People served (EPA-reported)
June 2026

EPA records reviewed through

What the EPA has on record, by system

City Of East Palo Alto

29,519 served · surface water · PWSID CA4110024

Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in March 2015. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.

Palo Alto Park Mutual Water Company

2,900 served · groundwater · PWSID CA4110020

Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in July 2015. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
Monitoring E. COLI: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in June 2018. All have since returned to compliance, per EPA records.

What this means

A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.

This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.

Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.