Does Mesa, CO tap water have any EPA-reported violations?

As of June 2026, EPA SDWIS records show 16 violation(s) across the community water systems serving Mesa, of which 0 are classified by the EPA as health-based. Most older violations have returned to compliance; see the per-system list.

Where does Mesa, CO tap water come from?

Mesa is served by 1 active community water system(s). Their primary sources, per EPA records, are: surface water.

CO / Mesa

CO · Tap water records

Mesa tap water, in plain English

Here is what the EPA's own data shows about tap water in Mesa. According to EPA SDWIS data retrieved June 2026, Mesa is served by 1 active community water system, together reported to serve about 330 people.

As of June 2026, EPA records show 16 violations across the community water system(s) serving Mesa, going back to the earliest EPA record. None were health-based; the records are monitoring or reporting violations (a required test or report was late or missed). Each is listed by system below, with its status.

1

Community water system
~330

People served (EPA-reported)
June 2026

EPA records reviewed through

What the EPA has on record, by system

Mesa Wsd

330 served · surface water · PWSID CO0139505

Monitoring Total Haloacetic Acids (HAA5): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 7 times between January 2015 and January 2023. EPA records do not show all of these as returned to compliance.
Monitoring Long Term 2 Enhanced Surface Water Treatment Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in July 2017. All have since returned to compliance, per EPA records.
Monitoring TTHM: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in January 2016. All have since returned to compliance, per EPA records.
Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 5 times between January 1998 and October 2006. 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.