Public water system · NM3590331
ActiveCapulin Volcano National Monument
At a glance
Capulin Volcano National Monument (PWSID NM3590331) is an active transient non-community water system in Union County, New Mexico. It reports serving 175 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
175
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Capulin Volcano National Monument compare with other water systems in Union County?
By EPA's size categories, Capulin Volcano National Monument is a very small system (500 people or fewer). Union County has 8 active public water systems, and Capulin Volcano National Monument is the 5th-largest of them by population served. Its population served is well below the county average of 587 people per system, and accounts for 3.7% of the 4,699 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 Capulin Volcano National Monument is about 22% 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 Capulin Volcano National Monument?
EPA lists Capulin Volcano National Monument as owned by the federal government. 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. 1 of the 8 active systems in Union County (13%) are also owned by the federal government.
Does Capulin Volcano National Monument have drinking water violations?
EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in March 2026. The violations listed here began between July 1991 and March 2026. By type: 3 contaminant level above the legal limit, 2 monitoring, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 3 as resolved, 2 as unaddressed and 2 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 |
|---|---|---|---|---|
| 2026-03-29 | Required treatment not metTreatment Technique, Level 2 Assessment (RTCR) · code 2B | Revised Total Coliform Rulecode 8000 | Yes | Unaddressed |
| 2026-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2025-02-21 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2023-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1991-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1991-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 7 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.
Capulin Volcano National Monument: frequently asked questions
Who runs Capulin Volcano National Monument?
Capulin Volcano National Monument (PWSID NM3590331) is a transient non-community water system owned by the federal government. It is regulated by the NM state drinking water program.
How many people does Capulin Volcano National Monument serve?
Capulin Volcano National Monument reports serving 175 people through 1 service connection in Union County, New Mexico.
Where does Capulin Volcano National Monument 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 Capulin Volcano National Monument have any drinking water violations?
EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in March 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 Capulin Volcano National Monument'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. EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in March 2026. For current results, consult EPA ECHO, or the NM state drinking water program.
Where can I find Capulin Volcano National Monument's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Capulin Volcano National Monument 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 Union County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Clayton Municipal Supply | Union | 3,250 | Community | Groundwater |
| Northeast Nm Detention Facility | Union | 703 | Non-transient non-community | Groundwater |
| Des Moines Water System | Union | 218 | Community | Groundwater |
| Clayton Lake State Park | Union | 178 | Transient non-community | Groundwater |
| Sierra Grande Highway Rest Area | Union | 75 | Transient non-community | Groundwater |
| Capulin Rv Park | Union | 55 | Transient non-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, “Capulin Volcano National Monument, PWSID NM3590331, New Mexico”, https://aquacensus.com/water-systems/new-mexico/capulin-volcano-national-monument-nm3590331 (data as of October 1, 2026).