Is MESILLA WATER SYSTEM required to publish a Consumer Confidence Report?

Yes. MESILLA WATER SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MESILLA WATER SYSTEM’s next Consumer Confidence Report due?

MESILLA WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

MESILLA, NM · Dona Ana County

MESILLA WATER SYSTEM Water System

Consumer Confidence Report status

MESILLA WATER SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 1 item for MESILLA WATER SYSTEM that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace New Mexico’s official records. Always confirm current status with New Mexico before making decisions based on this information.

System facts

System ID (PWSID): NM3560007
System type: Community Water System
Population served: 2,167
Service connections: 827
Ownership: local government
Water source: groundwater (wells)

MESILLA WATER SYSTEM is one of 140 community water systems in New Mexico in the 501 to 3,300 people size category, serving 2,167 people from groundwater.

As of August 1, 2026, its federal record holds 14 entries between 2005 and 2020, of which 1 remains open; none are health-based.

Of the 14, 6 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Public Notice Rule and Revised PN Rule, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Groundwater Rule.

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
November 18, 2020 – February 11, 2021
Resolved
Monitoring, Regular
—
Asbestos
January 1, 2020 – December 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2019 – June 30, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 8, 2018 – January 31, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 8, 2018 – January 31, 2020
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2017 – November 8, 2018
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
August 25, 2017 – March 5, 2019
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
August 25, 2017 – March 5, 2019
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2016 – June 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2015 – August 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2014 – August 31, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 16, 2013
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
June 27, 2010 – November 9, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2005 – October 31, 2005
Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Period	Violation	Contaminant / rule	Health-based	Status
November 18, 2020 – February 11, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Asbestos	—	Resolved
July 1, 2019 – June 30, 2020	Monitoring and Reporting (DBP)	TTHM	—	Resolved
February 8, 2018 – January 31, 2020	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
February 8, 2018 – January 31, 2020	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2017 – November 8, 2018	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
August 25, 2017 – March 5, 2019	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
August 25, 2017 – March 5, 2019	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
July 1, 2016 – June 30, 2017	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2015 – August 31, 2016	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2014 – August 31, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
May 16, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
June 27, 2010 – November 9, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2005 – October 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

June 26, 2009State Violation/Reminder Notice2 linked violations
June 26, 2009State Public Notification requested2 linked violations
June 9, 2009State Public Notification received2 linked violations
March 11, 2009State Violation/Reminder Notice4 linked violations

Common questions

Is MESILLA WATER SYSTEM required to publish a Consumer Confidence Report?: Yes. MESILLA WATER SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is MESILLA WATER SYSTEM’s next Consumer Confidence Report due?: MESILLA WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MESILLA WATER SYSTEM have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for MESILLA WATER SYSTEM that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

ASTORGA, LORENZO

575-993-2322

MESILLA, NM 88046