Public water system · WY5601674
ActiveLittle Powder School
At a glance
Little Powder School (PWSID WY5601674) is an active non-transient non-community water system in Campbell County, Wyoming. It reports serving 32 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
32
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Little Powder School compare with other water systems in Campbell County?
By EPA's size categories, Little Powder School is a very small system (500 people or fewer). Campbell County has 68 active public water systems. Its population served is well below the county average of 779 people per system, and accounts for less than 0.1% of the 52,981 people reported by systems filed under the county. Across Wyoming, the 775 active systems average 838 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Little Powder School is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Wyoming has 91 active non-transient non-community water systems, 12% 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 Little Powder School?
EPA lists Little Powder School as owned by a state 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. 1 of the 68 active systems in Campbell County (1.5%) are also owned by a state government.
Does Little Powder School have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2017. The violations listed here began between August 2016 and January 2017. By type: 1 required treatment not met and 1 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 2 as resolved. 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 |
|---|---|---|---|---|
| 2017-01-01 | Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2016-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 2 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.
Little Powder School: frequently asked questions
Who runs Little Powder School?
Little Powder School (PWSID WY5601674) is a non-transient non-community water system owned by a state government. It is regulated by the WY state drinking water program.
How many people does Little Powder School serve?
Little Powder School reports serving 32 people through 1 service connection in Campbell County, Wyoming.
Where does Little Powder School 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 Little Powder School have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2017. 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 Little Powder School'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 2 violations for this system; 1 is health-based, and the most recent began in January 2017. For current results, consult EPA ECHO, or the WY state drinking water program.
Where can I find Little Powder School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Little Powder School is a non-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 Campbell County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Gillette, City of | Campbell | 32,222 | Community | Groundwater |
| Wright Water & Sewer District | Campbell | 3,207 | Community | Groundwater |
| Sleepy Hollow Subdivision | Campbell | 2,400 | Community | Groundwater |
| Antelope Valley I&S District (Avisd) | Campbell | 1,280 | Community | Groundwater |
| Fox Park Subdivision | Campbell | 843 | Community | Groundwater |
| Heritage Village Subdivision | Campbell | 750 | 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, “Little Powder School, PWSID WY5601674, Wyoming”, https://aquacensus.com/water-systems/wyoming/little-powder-school-wy5601674 (data as of October 1, 2026).