Public water system · NM3504221
ActiveMesa Shopping Center
At a glance
Mesa Shopping Center (PWSID NM3504221) is an active non-transient non-community water system in Rio Arriba County, New Mexico. It reports serving 28 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
28
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mesa Shopping Center compare with other water systems in Rio Arriba County?
By EPA's size categories, Mesa Shopping Center is a very small system (500 people or fewer). Rio Arriba County has 63 active public water systems. Its population served is well below the county average of 463 people per system, and accounts for less than 0.1% of the 29,192 people reported by systems filed under the county. Across New Mexico, the 1,165 active systems average 1,885 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Mesa Shopping Center is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. New Mexico has 151 active non-transient non-community water systems, 13% of the state's 1,165 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,009 New Mexico systems (87%) list groundwater as their primary source.
Who owns and regulates Mesa Shopping Center?
EPA lists Mesa Shopping Center as privately owned. The NM state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 12 of the 63 active systems in Rio Arriba County (19%) are also privately owned.
Does Mesa Shopping Center have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in January 2026. The violations listed here began between January 2021 and January 2026. By type: 4 public notice, recordkeeping or other, 4 required treatment not met, 1 contaminant level above the legal limit, 1 monitoring and reporting, 1 reporting and 1 monitoring. The contaminant or rule involved most often is Public Notice (4 of them). EPA lists 6 as resolved, 5 as unaddressed and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Uraniumcode 4006 | Yes | Archived |
| 2025-12-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-09-04 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2024-09-04 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2024-09-04 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2022-09-15 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2021-08-07 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2021-01-23 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Mesa Shopping Center: frequently asked questions
Who runs Mesa Shopping Center?
Mesa Shopping Center (PWSID NM3504221) is a non-transient non-community water system privately owned. It is regulated by the NM state drinking water program.
How many people does Mesa Shopping Center serve?
Mesa Shopping Center reports serving 28 people through 1 service connection in Rio Arriba County, New Mexico.
Where does Mesa Shopping Center get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Mesa Shopping Center have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in January 2026. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Mesa Shopping Center's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in January 2026. For current results, consult EPA ECHO, or the NM state drinking water program.
Where can I find Mesa Shopping Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mesa Shopping Center is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Rio Arriba County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Espanola Water System | Rio Arriba | 12,012 | Community | Groundwater |
| Chama Water System | Rio Arriba | 1,573 | Community | Surface water |
| Agua Sana Wua | Rio Arriba | 1,514 | Community | Groundwater |
| El Rito Regional Water & Waste Water Asn | Rio Arriba | 1,200 | Community | Groundwater |
| Greater Chimayo Mdwca | Rio Arriba | 1,050 | Community | Groundwater |
| Alcalde Mdwca | Rio Arriba | 927 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Mesa Shopping Center, PWSID NM3504221, New Mexico”, https://aquacensus.com/water-systems/new-mexico/mesa-shopping-center-nm3504221 (data as of October 1, 2026).