Public water system · WY5680235
ActiveShoshone Nf-Island Lake Cg
At a glance
Shoshone Nf-Island Lake Cg (PWSID WY5680235) is an active transient non-community water system in Park County, Wyoming. It reports serving 75 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
75
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Shoshone Nf-Island Lake Cg compare with other water systems in Park County?
By EPA's size categories, Shoshone Nf-Island Lake Cg is a very small system (500 people or fewer). Park County has 49 active public water systems. Its population served is well below the county average of 777 people per system, and accounts for 0.2% of the 38,068 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 Shoshone Nf-Island Lake Cg is about half of 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 Shoshone Nf-Island Lake Cg?
EPA lists Shoshone Nf-Island Lake Cg 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. 14 of the 49 active systems in Park County (29%) are also owned by the federal government.
Does Shoshone Nf-Island Lake Cg have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Shoshone Nf-Island Lake Cg. For the latest compliance status, check EPA ECHO for current compliance history.
Shoshone Nf-Island Lake Cg: frequently asked questions
Who runs Shoshone Nf-Island Lake Cg?
Shoshone Nf-Island Lake Cg (PWSID WY5680235) 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 Shoshone Nf-Island Lake Cg serve?
Shoshone Nf-Island Lake Cg reports serving 75 people through 1 service connection in Park County, Wyoming.
Where does Shoshone Nf-Island Lake Cg 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 Shoshone Nf-Island Lake Cg have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Shoshone Nf-Island Lake Cg'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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the WY state drinking water program.
Where can I find Shoshone Nf-Island Lake Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Shoshone Nf-Island Lake Cg 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 Park County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cody, City of | Park | 10,224 | Community | Purchased surface water |
| Northwest Rural Water District | Park | 7,330 | Community | Purchased surface water |
| Powell, City of | Park | 6,310 | Community | Purchased surface water |
| Ynp-Canyon Village | Park | 4,300 | Non-transient non-community | Surface water |
| Ynp-Mammoth Hot Springs | Park | 2,600 | Community | Surface water |
| Ynp-Norris | Park + 1 more | 1,515 | Transient non-community | 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, “Shoshone Nf-Island Lake Cg, PWSID WY5680235, Wyoming”, https://aquacensus.com/water-systems/wyoming/shoshone-nf-island-lake-cg-wy5680235 (data as of October 1, 2026).