Public water system · NM3590921
ActiveBrazos Mdwca
At a glance
Brazos Mdwca (PWSID NM3590921) is an active transient non-community water system in Rio Arriba County, New Mexico. It reports serving 360 people through 136 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
360
Service connections
136
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Brazos Mdwca compare with other water systems in Rio Arriba County?
By EPA's size categories, Brazos Mdwca is a very small system (500 people or fewer). Rio Arriba County has 63 active public water systems. Its population served is about 22% below the county average of 463 people per system, and accounts for 1.2% 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 transient non-community water system reports serving 144 people, so Brazos Mdwca is about 150% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. New Mexico has 369 active transient non-community water systems, 32% 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 Brazos Mdwca?
EPA lists Brazos Mdwca 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 Brazos Mdwca have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2025. The violations listed here began between July 2002 and January 2025. By type: 5 monitoring and reporting, 4 public notice, recordkeeping or other, 2 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 12 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2010-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2004-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2003-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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.
Brazos Mdwca: frequently asked questions
Who runs Brazos Mdwca?
Brazos Mdwca (PWSID NM3590921) is a transient non-community water system privately owned. It is regulated by the NM state drinking water program.
How many people does Brazos Mdwca serve?
Brazos Mdwca reports serving 360 people through 136 service connections in Rio Arriba County, New Mexico.
Where does Brazos Mdwca 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 Brazos Mdwca have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2025. 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 Brazos Mdwca'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, one is health-based, and the most recent began in January 2025. For current results, consult EPA ECHO, or the NM state drinking water program.
Where can I find Brazos Mdwca's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Brazos Mdwca is a 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 |
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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, “Brazos Mdwca, PWSID NM3590921, New Mexico”, https://aquacensus.com/water-systems/new-mexico/brazos-mdwca-nm3590921 (data as of October 1, 2026).