Public water system · MT0004923
ActiveMountain Range Rv Park
At a glance
Mountain Range Rv Park (PWSID MT0004923) is an active transient non-community water system in Stillwater County, Montana. It reports serving 50 people through 31 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
31
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mountain Range Rv Park compare with other water systems in Stillwater County?
By EPA's size categories, Mountain Range Rv Park is a very small system (500 people or fewer). Stillwater County has 30 active public water systems. Its population served is well below the county average of 278 people per system, and accounts for 0.6% of the 8,352 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Mountain Range Rv Park is about 65% below 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. Montana has 1,206 active transient non-community water systems, 51% 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 Mountain Range Rv Park?
EPA lists Mountain Range Rv Park 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. 21 of the 30 active systems in Stillwater County (70%) are also privately owned.
Does Mountain Range Rv Park have drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in October 2024. The violations listed here began between September 2016 and October 2024. By type: 4 monitoring, 2 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (5 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2024-10-19 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2024-09-03 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2017-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2016-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 7 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.
Mountain Range Rv Park: frequently asked questions
Who runs Mountain Range Rv Park?
Mountain Range Rv Park (PWSID MT0004923) is a transient non-community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Mountain Range Rv Park serve?
Mountain Range Rv Park reports serving 50 people through 31 service connections in Stillwater County, Montana.
Where does Mountain Range Rv Park 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 Mountain Range Rv Park have any drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in October 2024. 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 Mountain Range Rv Park'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 7 violations for this system; 1 is health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Mountain Range Rv Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mountain Range Rv Park 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 Stillwater County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Columbus Town of | Stillwater | 1,900 | Community | Groundwater |
| Cenex Zip Trip Num 50 | Stillwater | 1,500 | Transient non-community | Groundwater |
| Absarokee Water and Sewer Dist | Stillwater | 1,100 | Community | Groundwater |
| Columbus Rest Area Eastbound | Stillwater | 800 | Transient non-community | Groundwater |
| Columbus Rest Area Westbound | Stillwater | 800 | Transient non-community | Groundwater |
| Stillwater Mining Company | Stillwater | 630 | Non-transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Mountain Range Rv Park, PWSID MT0004923, Montana”, https://aquacensus.com/water-systems/montana/mountain-range-rv-park-mt0004923 (data as of October 1, 2026).