Public water system · NM3590324
ActiveChaco Culture National Historic Park
At a glance
Chaco Culture National Historic Park (PWSID NM3590324) is an active non-transient non-community water system in San Juan County, New Mexico. It reports serving 250 people through 21 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
21
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Chaco Culture National Historic Park compare with other water systems in San Juan County?
By EPA's size categories, Chaco Culture National Historic Park is a very small system (500 people or fewer). San Juan County has 22 active public water systems. Its population served is well below the county average of 4,715 people per system, and accounts for 0.2% of the 103,721 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 Chaco Culture National Historic Park is about 42% 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 Chaco Culture National Historic Park?
EPA lists Chaco Culture National Historic Park 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. 2 of the 22 active systems in San Juan County (9.1%) are also owned by the federal government.
Does Chaco Culture National Historic Park have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2024. The violations listed here began between September 2019 and October 2024. By type: 4 public notice, recordkeeping or other, 4 monitoring and reporting, 3 required treatment not met and 1 reporting. The contaminant or rule involved most often is Public Notice (3 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 |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2024-08-16 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2020-08-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2020-02-16 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Asbestoscode 1094 | No | Resolved |
| 2019-12-21 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2019-12-21 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2019-09-25 | Public notice, recordkeeping or otherFailure to Consult with State · code 20 | Groundwater Rulecode 0700 | No | Resolved |
| 2019-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2019-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | 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.
Chaco Culture National Historic Park: frequently asked questions
Who runs Chaco Culture National Historic Park?
Chaco Culture National Historic Park (PWSID NM3590324) is a non-transient non-community water system owned by the federal government. It is regulated by the NM state drinking water program.
How many people does Chaco Culture National Historic Park serve?
Chaco Culture National Historic Park reports serving 250 people through 21 service connections in San Juan County, New Mexico.
Where does Chaco Culture National Historic Park 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 Chaco Culture National Historic Park have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2024. 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 Chaco Culture National Historic Park'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, 3 are health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the NM state drinking water program.
Where can I find Chaco Culture National Historic Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Chaco Culture National Historic Park 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 San Juan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Farmington Water System | San Juan | 47,655 | Community | Surface water |
| Aztec Domestic Water System | San Juan | 9,673 | Community | Surface water |
| Bloomfield Water Supply System | San Juan | 9,536 | Community | Surface water |
| Lee Hammond Water | San Juan | 8,817 | Community | Surface water |
| Lower Valley Water Users Association | San Juan | 7,615 | Community | Surface water |
| Morningstar Water System | San Juan | 5,694 | Community | Purchased 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, “Chaco Culture National Historic Park, PWSID NM3590324, New Mexico”, https://aquacensus.com/water-systems/new-mexico/chaco-culture-national-historic-park-nm3590324 (data as of October 1, 2026).