Public water system · NM3576623
ActiveHofheins/Marcel Thomas Assoc Coop Inc.
At a glance
Hofheins/Marcel Thomas Assoc Coop Inc. (PWSID NM3576623) is an active community water system in Sandoval County, New Mexico. It reports serving 98 people through 36 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, none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
98
Service connections
36
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hofheins/Marcel Thomas Assoc Coop Inc. compare with other water systems in Sandoval County?
By EPA's size categories, Hofheins/Marcel Thomas Assoc Coop Inc. is a very small system (500 people or fewer). Sandoval County has 62 active public water systems. Its population served is well below the county average of 2,181 people per system, and accounts for less than 0.1% of the 135,215 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 community water system reports serving 6,703 people, so Hofheins/Marcel Thomas Assoc Coop Inc. 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. 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 Hofheins/Marcel Thomas Assoc Coop Inc.?
EPA lists Hofheins/Marcel Thomas Assoc Coop Inc. 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. 31 of the 62 active systems in Sandoval County (50%) are also privately owned.
Does Hofheins/Marcel Thomas Assoc Coop Inc. have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between January 2000 and October 2025. By type: 9 monitoring and reporting and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 9 as resolved, 2 as archived and 1 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. 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. 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 |
|---|---|---|---|---|
| 2025-10-25 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2024-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2017-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2016-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2002-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Hofheins/Marcel Thomas Assoc Coop Inc.: frequently asked questions
Who runs Hofheins/Marcel Thomas Assoc Coop Inc.?
Hofheins/Marcel Thomas Assoc Coop Inc. (PWSID NM3576623) is a community water system privately owned. It is regulated by the NM state drinking water program.
How many people does Hofheins/Marcel Thomas Assoc Coop Inc. serve?
Hofheins/Marcel Thomas Assoc Coop Inc. reports serving 98 people through 36 service connections in Sandoval County, New Mexico.
Where does Hofheins/Marcel Thomas Assoc Coop Inc. 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 Hofheins/Marcel Thomas Assoc Coop Inc. have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 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 Hofheins/Marcel Thomas Assoc Coop Inc.'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, none is health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the NM state drinking water program.
Where can I find Hofheins/Marcel Thomas Assoc Coop Inc.'s water quality report?
As a community water system, Hofheins/Marcel Thomas Assoc Coop Inc. 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 Sandoval County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rio Rancho Water & Ww Services | Sandoval | 107,350 | Community | Purchased surface water |
| Bernalillo Water System | Sandoval | 10,948 | Community | Groundwater |
| Cuba Water System | Sandoval | 1,789 | Community | Groundwater |
| Jemez Springs Dwua | Sandoval | 1,385 | Community | Groundwater |
| Regina Mdwca | Sandoval | 705 | Community | Groundwater |
| Pena Blanca Water & Sanitation District | Sandoval | 700 | 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, “Hofheins/Marcel Thomas Assoc Coop Inc., PWSID NM3576623, New Mexico”, https://aquacensus.com/water-systems/new-mexico/hofheins-marcel-thomas-assoc-coop-inc-nm3576623 (data as of October 1, 2026).