Does Upland, CA tap water have any EPA-reported violations?

As of June 2026, EPA SDWIS records show 7 violation(s) across the community water systems serving Upland, of which 3 are classified by the EPA as health-based. Most older violations have returned to compliance; see the per-system list.

Where does Upland, CA tap water come from?

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

CA / Upland

CA · Tap water records

Upland tap water, in plain English

Here is what the EPA's own data shows about tap water in Upland. According to EPA SDWIS data retrieved June 2026, Upland is served by 2 active community water systems, together reported to serve about 81,817 people.

As of June 2026, EPA records show 7 violations across the community water system(s) serving Upland, going back to the earliest EPA record. 3 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
~81,817

People served (EPA-reported)
June 2026

EPA records reviewed through

What the EPA has on record, by system

Upland, City Of

78,376 served · surface water · PWSID CA3610050

Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in October 2019. All have since returned to compliance, per EPA records.
Monitoring Nitrate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in January 2015. All have since returned to compliance, per EPA records.

San Antonio Water Company

3,441 served · groundwater · PWSID CA3610085

Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in November 2015. The EPA record for these does not include a measured level. 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.