Public water system · WY5680111
ActiveGtnp-Amk Ranch
At a glance
Gtnp-Amk Ranch (PWSID WY5680111) is an active transient non-community water system in Teton County, Wyoming. It reports serving 25 people through 7 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list one violation for this system; it is health-based, and the most recent began in July 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
7
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Gtnp-Amk Ranch compare with other water systems in Teton County?
By EPA's size categories, Gtnp-Amk Ranch is a very small system (500 people or fewer). Teton County has 112 active public water systems. Its population served is well below the county average of 697 people per system, and accounts for less than 0.1% of the 78,057 people reported by systems filed under the county. Across Wyoming, the 775 active systems average 838 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Gtnp-Amk Ranch is well 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. Wyoming has 352 active transient non-community water systems, 45% of the state's 775 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 585 Wyoming systems (75%) list groundwater as their primary source.
Who owns and regulates Gtnp-Amk Ranch?
EPA lists Gtnp-Amk Ranch as owned by the federal government. The WY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 32 of the 112 active systems in Teton County (29%) are also owned by the federal government.
Does Gtnp-Amk Ranch have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 2006. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 as archived. 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 |
|---|---|---|---|---|
| 2006-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
The one violation in EPA's records.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.
Gtnp-Amk Ranch: frequently asked questions
Who runs Gtnp-Amk Ranch?
Gtnp-Amk Ranch (PWSID WY5680111) is a transient non-community water system owned by the federal government. It is regulated by the WY state drinking water program.
How many people does Gtnp-Amk Ranch serve?
Gtnp-Amk Ranch reports serving 25 people through 7 service connections in Teton County, Wyoming.
Where does Gtnp-Amk Ranch 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 Gtnp-Amk Ranch have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 2006. 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 Gtnp-Amk Ranch'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 one violation for this system; it is health-based, and the most recent began in July 2006. For current results, consult EPA ECHO, or the WY state drinking water program.
Where can I find Gtnp-Amk Ranch's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Gtnp-Amk Ranch 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 Teton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Jackson, Town of | Teton | 24,760 | Community | Groundwater |
| Ynp-Old Faithful | Teton | 7,675 | Community | Surface water |
| Ynp - Lake Village | Teton | 5,925 | Community | Groundwater under influence of surface water |
| Gtnp-Colter Bay Village | Teton | 4,514 | Community | Groundwater |
| Ynp-Grant Village | Teton | 3,513 | Transient non-community | Surface water |
| Grand Targhee Resort | Teton | 2,500 | Non-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, “Gtnp-Amk Ranch, PWSID WY5680111, Wyoming”, https://aquacensus.com/water-systems/wyoming/gtnp-amk-ranch-wy5680111 (data as of October 1, 2026).