Public water system · WY5601375
ActiveDevil'S Tower Trading Post
At a glance
Devil'S Tower Trading Post (PWSID WY5601375) is an active transient non-community water system in Crook County, Wyoming. It reports serving 215 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
215
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Devil'S Tower Trading Post compare with other water systems in Crook County?
By EPA's size categories, Devil'S Tower Trading Post is a very small system (500 people or fewer). Crook County has 27 active public water systems. Its population served is about 34% below the county average of 328 people per system, and accounts for 2.4% of the 8,854 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 Devil'S Tower Trading Post is about 49% above 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 Devil'S Tower Trading Post?
EPA lists Devil'S Tower Trading Post as privately owned. 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. 16 of the 27 active systems in Crook County (59%) are also privately owned.
Does Devil'S Tower Trading Post have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between April 1996 and July 2025. By type: 3 monitoring and reporting, 1 reporting and 1 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 3 as archived and 2 as resolved. 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. 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 |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Archived |
| 2022-04-10 | ReportingReport Startup Procedures Cert Form (RTCR) · code 4C | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1997-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1996-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 5 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.
Devil'S Tower Trading Post: frequently asked questions
Who runs Devil'S Tower Trading Post?
Devil'S Tower Trading Post (PWSID WY5601375) is a transient non-community water system privately owned. It is regulated by the WY state drinking water program.
How many people does Devil'S Tower Trading Post serve?
Devil'S Tower Trading Post reports serving 215 people through 2 service connections in Crook County, Wyoming.
Where does Devil'S Tower Trading Post 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 Devil'S Tower Trading Post have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 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 Devil'S Tower Trading Post'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 5 violations for this system; none is health-based, and the most recent began in July 2025. For current results, consult EPA ECHO, or the WY state drinking water program.
Where can I find Devil'S Tower Trading Post's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Devil'S Tower Trading Post 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 Crook County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Devils Tower National Monument | Crook | 3,071 | Transient non-community | Groundwater |
| Sundance, City of | Crook | 1,279 | Community | Groundwater |
| Moorcroft, Town of | Crook | 1,009 | Community | Groundwater |
| Devils Tower Koa-Campstool | Crook | 516 | Transient non-community | Groundwater |
| Pine Haven, Town of | Crook | 498 | Community | Groundwater |
| Hulett, Town of | Crook | 420 | 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, “Devil'S Tower Trading Post, PWSID WY5601375, Wyoming”, https://aquacensus.com/water-systems/wyoming/devil-s-tower-trading-post-wy5601375 (data as of October 1, 2026).