Public water system · MT0003840
ActiveWestern Energy Company
At a glance
Western Energy Company (PWSID MT0003840) is an active non-transient non-community water system in Rosebud County, Montana. It reports serving 200 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Western Energy Company compare with other water systems in Rosebud County?
By EPA's size categories, Western Energy Company is a very small system (500 people or fewer). Rosebud County has 15 active public water systems. Its population served is about 60% below the county average of 494 people per system, and accounts for 2.7% of the 7,415 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Western Energy Company is about half of 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. Montana has 319 active non-transient non-community water systems, 13% of the state's 2,378 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,994 Montana systems (84%) list groundwater as their primary source.
Who owns and regulates Western Energy Company?
EPA lists Western Energy Company as privately owned. The MT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 15 active systems in Rosebud County (53%) are also privately owned.
Does Western Energy Company have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2018. The violations listed here began between January 2002 and October 2018. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (8 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2015-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2009-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2007-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2003-01-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2002-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2002-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2002-01-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
The 12 most recent 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.
Western Energy Company: frequently asked questions
Who runs Western Energy Company?
Western Energy Company (PWSID MT0003840) is a non-transient non-community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Western Energy Company serve?
Western Energy Company reports serving 200 people through 3 service connections in Rosebud County, Montana.
Where does Western Energy Company 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 Western Energy Company have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2018. 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 Western Energy Company'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2018. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Western Energy Company's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Western Energy Company 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 Rosebud County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Colstrip City of | Rosebud | 2,350 | Community | Surface water |
| Forsyth City of | Rosebud | 2,260 | Community | Surface water |
| St Labre Indian School | Rosebud | 650 | Community | Groundwater |
| Wb Hathaway Rest Area | Rosebud | 600 | Transient non-community | Groundwater |
| East Bound Hathaway Rest Area | Rosebud | 600 | Transient non-community | Groundwater |
| Ashland Water and Sewer Dist | Rosebud | 400 | 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, “Western Energy Company, PWSID MT0003840, Montana”, https://aquacensus.com/water-systems/montana/western-energy-company-mt0003840 (data as of October 1, 2026).