Public water system · WY5680077
ActiveYnp-Grant Village
At a glance
Ynp-Grant Village (PWSID WY5680077) is an active transient non-community water system in Teton County, Wyoming. It reports serving 3,513 people through 175 service connections. Its primary water source is surface water, and EPA lists it as owned by the federal government. EPA's records list one violation for this system; it is not health-based, and the most recent began in July 1991.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,513
Service connections
175
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Ynp-Grant Village compare with other water systems in Teton County?
By EPA's size categories, Ynp-Grant Village is a medium system (3,301 to 10,000 people). Teton County has 112 active public water systems, and Ynp-Grant Village is the 5th-largest of them by population served. Its population served is about 5 times the county average of 697 people per system, and accounts for 4.5% 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-Grant Village is about 24 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 50 Wyoming systems (6.5%) list surface water as their primary source.
Who owns and regulates Ynp-Grant Village?
EPA lists Ynp-Grant Village 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-Grant Village have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 1991. By type: 1 monitoring and reporting. 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 |
|---|---|---|---|---|
| 1991-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | 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.
Ynp-Grant Village: frequently asked questions
Who runs Ynp-Grant Village?
Ynp-Grant Village (PWSID WY5680077) 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-Grant Village serve?
Ynp-Grant Village reports serving 3,513 people through 175 service connections in Teton County, Wyoming.
Where does Ynp-Grant Village get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Ynp-Grant Village have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 1991. 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-Grant Village'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 not health-based, and the most recent began in July 1991. For current results, consult EPA ECHO, or the WY state drinking water program.
Where can I find Ynp-Grant Village's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ynp-Grant Village 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 |
| Grand Targhee Resort | Teton | 2,500 | Non-transient non-community | Groundwater |
| Rendezvous (R) Park | Teton | 2,006 | 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-Grant Village, PWSID WY5680077, Wyoming”, https://aquacensus.com/water-systems/wyoming/ynp-grant-village-wy5680077 (data as of October 1, 2026).