Public water system · WY5680090
ActiveYnp-Tower Junction Ranger Station
At a glance
Ynp-Tower Junction Ranger Station (PWSID WY5680090) is an active transient non-community water system in Teton County, Wyoming. It reports serving 940 people through 15 service connections. Its primary water source is groundwater under influence of surface water, 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 January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
940
Service connections
15
Primary source
GU
Groundwater under influence of surface water
System type
TNCWS
Transient non-community water system
System record
How does Ynp-Tower Junction Ranger Station compare with other water systems in Teton County?
By EPA's size categories, Ynp-Tower Junction Ranger Station is a small system (501 to 3,300 people). Teton County has 112 active public water systems. Its population served is about 35% above the county average of 697 people per system, and accounts for 1.2% 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 Ynp-Tower Junction Ranger Station is about 6.5 times 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 under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 24 Wyoming systems (3.1%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Ynp-Tower Junction Ranger Station?
EPA lists Ynp-Tower Junction Ranger Station 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 Ynp-Tower Junction Ranger Station have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in January 2025. By type: 1 required treatment not met. The contaminant or rule involved is Surface Water Treatment Rule. EPA lists 1 as unaddressed. 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 |
|---|---|---|---|---|
| 2025-01-31 | Required treatment not metFailure to Filter (SWTR) · code 42 | Surface Water Treatment Rulecode 0200 | Yes | Unaddressed |
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.
Ynp-Tower Junction Ranger Station: frequently asked questions
Who runs Ynp-Tower Junction Ranger Station?
Ynp-Tower Junction Ranger Station (PWSID WY5680090) 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 Ynp-Tower Junction Ranger Station serve?
Ynp-Tower Junction Ranger Station reports serving 940 people through 15 service connections in Teton County, Wyoming.
Where does Ynp-Tower Junction Ranger Station get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Ynp-Tower Junction Ranger Station have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in January 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 Ynp-Tower Junction Ranger Station'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 January 2025. For current results, consult EPA ECHO, or the WY state drinking water program.
Where can I find Ynp-Tower Junction Ranger Station's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ynp-Tower Junction Ranger Station 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, “Ynp-Tower Junction Ranger Station, PWSID WY5680090, Wyoming”, https://aquacensus.com/water-systems/wyoming/ynp-tower-junction-ranger-station-wy5680090 (data as of October 1, 2026).