Public water system · NN3500239
ActiveWhitehorse Lake NTUA
At a glance
Whitehorse Lake NTUA (PWSID NN3500239) is an active community water system in New Mexico. It reports serving 277 people through 81 service connections. Its primary water source is purchased surface water, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
277
Service connections
81
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Whitehorse Lake NTUA compare with other water systems in New Mexico?
By EPA's size categories, Whitehorse Lake NTUA is a very small system (500 people or fewer). Across New Mexico, the 1,165 active systems average 1,885 people each. Nationally, the average active community water system reports serving 6,703 people, so Whitehorse Lake NTUA is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New Mexico has 645 active community water systems, 55% of the state's 1,165 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 47 New Mexico systems (4%) list purchased surface water as their primary source.
Who owns and regulates Whitehorse Lake NTUA?
EPA lists Whitehorse Lake NTUA as Native American-owned. The NN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Whitehorse Lake NTUA have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2016. The violations listed here began between January 2010 and April 2016. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrite (2 of them). EPA lists 10 as resolved and 2 as unaddressed. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2016-04-01 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Unaddressed |
| 2014-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | No | Resolved |
| 2014-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 2014-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,3,7,8-TCDD (dioxin)code 2063 | No | Resolved |
| 2014-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Glyphosatecode 2034 | No | Resolved |
| 2013-10-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Unaddressed |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2012-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Antimonycode 1074 | Yes | Resolved |
| 2010-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | 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.
Whitehorse Lake NTUA: frequently asked questions
Who runs Whitehorse Lake NTUA?
Whitehorse Lake NTUA (PWSID NN3500239) is a community water system Native American-owned. It is regulated by the NN state drinking water program.
How many people does Whitehorse Lake NTUA serve?
Whitehorse Lake NTUA reports serving 277 people through 81 service connections in New Mexico.
Where does Whitehorse Lake NTUA get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Whitehorse Lake NTUA 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 April 2016. 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 Whitehorse Lake NTUA'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 April 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the NN state drinking water program.
Where can I find Whitehorse Lake NTUA's water quality report?
As a community water system, Whitehorse Lake NTUA must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in New Mexico
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Albuquerque Water System | Bernalillo | 560,326 | Community | Surface water |
| Rio Rancho Water & Ww Services | Sandoval | 107,350 | Community | Purchased surface water |
| Las Cruces Municipal Water System | Dona Ana | 98,175 | Community | Groundwater |
| Santa Fe Water System (City of) | Santa Fe | 90,810 | Community | Surface water |
| Roswell Municipal Water System | Chaves | 54,025 | Community | Groundwater |
| Farmington Water System | San Juan | 47,655 | Community | Surface water |
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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, “Whitehorse Lake NTUA, PWSID NN3500239, New Mexico”, https://aquacensus.com/water-systems/new-mexico/whitehorse-lake-ntua-nn3500239 (data as of October 1, 2026).