Public water system · NM3501033
ActiveGrants Koa
At a glance
Grants Koa (PWSID NM3501033) is an active transient non-community water system in Cibola County, New Mexico. It reports serving 122 people through 40 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in May 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
122
Service connections
40
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Grants Koa compare with other water systems in Cibola County?
By EPA's size categories, Grants Koa is a very small system (500 people or fewer). Cibola County has 18 active public water systems. Its population served is well below the county average of 1,117 people per system, and accounts for 0.6% of the 20,114 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 Grants Koa is about 15% below 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 Grants Koa?
EPA lists Grants Koa 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. 3 of the 18 active systems in Cibola County (17%) are also privately owned.
Does Grants Koa have drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in May 2025. The violations listed here began between January 2005 and May 2025. By type: 3 contaminant level above the legal limit, 1 public notice, recordkeeping or other, 1 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2025-05-22 | Public notice, recordkeeping or otherFailure to Consult with State · code 20 | Groundwater Rulecode 0700 | No | Resolved |
| 2016-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2009-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
All 6 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.
Grants Koa: frequently asked questions
Who runs Grants Koa?
Grants Koa (PWSID NM3501033) is a transient non-community water system privately owned. It is regulated by the NM state drinking water program.
How many people does Grants Koa serve?
Grants Koa reports serving 122 people through 40 service connections in Cibola County, New Mexico.
Where does Grants Koa 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 Grants Koa have any drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in May 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 Grants Koa'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 6 violations for this system; 3 are health-based, and the most recent began in May 2025. For current results, consult EPA ECHO, or the NM state drinking water program.
Where can I find Grants Koa's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Grants Koa 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 Cibola County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grants Domestic Water System | Cibola | 10,523 | Community | Groundwater |
| Milan Community Water System | Cibola | 3,409 | Community | Groundwater |
| Acomita Rest Area | Cibola | 2,501 | Transient non-community | Groundwater |
| San Rafael Water & Sanitation District | Cibola | 1,060 | Community | Groundwater |
| Bluewater Water and Sanitation District | Cibola | 492 | Community | Groundwater |
| Bluewater Acres Wua | Cibola | 331 | 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, “Grants Koa, PWSID NM3501033, New Mexico”, https://aquacensus.com/water-systems/new-mexico/grants-koa-nm3501033 (data as of October 1, 2026).