Public water system · MT0042761
ActiveMakoshika State Park
At a glance
Makoshika State Park (PWSID MT0042761) is an active transient non-community water system in Dawson County, Montana. It reports serving 25 people through 6 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
6
Primary source
SWP
Purchased surface water
System type
TNCWS
Transient non-community water system
System record
How does Makoshika State Park compare with other water systems in Dawson County?
By EPA's size categories, Makoshika State Park is a very small system (500 people or fewer). Dawson County has 32 active public water systems. Its population served is well below the county average of 330 people per system, and accounts for 0.2% of the 10,547 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 Makoshika State Park is well 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 212 Montana systems (8.9%) list purchased surface water as their primary source.
Who owns and regulates Makoshika State Park?
EPA lists Makoshika State Park as owned by a state government. 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. 2 of the 32 active systems in Dawson County (6.3%) are also owned by a state government.
Does Makoshika State Park have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2011. The violations listed here began between May 2003 and July 2011. By type: 7 monitoring and reporting and 5 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (10 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 |
|---|---|---|---|---|
| 2011-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2005-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2003-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Makoshika State Park: frequently asked questions
Who runs Makoshika State Park?
Makoshika State Park (PWSID MT0042761) is a transient non-community water system owned by a state government. It is regulated by the MT state drinking water program.
How many people does Makoshika State Park serve?
Makoshika State Park reports serving 25 people through 6 service connections in Dawson County, Montana.
Where does Makoshika State Park get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Makoshika State Park have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2011. 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 Makoshika State 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. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2011. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Makoshika State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Makoshika State 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 Dawson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Glendive City of | Dawson | 4,873 | Community | Surface water |
| Forest Park Water Rsid 24 | Dawson | 1,200 | Community | Groundwater |
| Town Pump Travel Plaza Glendive | Dawson | 600 | Transient non-community | Groundwater |
| Westgate Cenex | Dawson | 600 | Transient non-community | Groundwater |
| Highland Park Utilities Assn | Dawson | 500 | Community | Groundwater |
| Trail Star Cafe and Truck Stop | Dawson | 400 | Transient non-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, “Makoshika State Park, PWSID MT0042761, Montana”, https://aquacensus.com/water-systems/montana/makoshika-state-park-mt0042761 (data as of October 1, 2026).