Public water system · MT0003675
ActiveJasper & Japser LLC
At a glance
Jasper & Japser LLC (PWSID MT0003675) is an active transient non-community water system in Mineral County, Montana. It reports serving 50 people through 2 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 January 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Jasper & Japser LLC compare with other water systems in Mineral County?
By EPA's size categories, Jasper & Japser LLC is a very small system (500 people or fewer). Mineral County has 37 active public water systems. Its population served is well below the county average of 454 people per system, and accounts for 0.3% of the 16,812 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 Jasper & Japser LLC 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 Jasper & Japser LLC?
EPA lists Jasper & Japser LLC 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. 26 of the 37 active systems in Mineral County (70%) are also privately owned.
Does Jasper & Japser LLC have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2020. The violations listed here began between July 1999 and January 2020. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (9 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 |
|---|---|---|---|---|
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2019-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-07-01 | 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 |
| 2000-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-07-01 | 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.
Jasper & Japser LLC: frequently asked questions
Who runs Jasper & Japser LLC?
Jasper & Japser LLC (PWSID MT0003675) is a transient non-community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Jasper & Japser LLC serve?
Jasper & Japser LLC reports serving 50 people through 2 service connections in Mineral County, Montana.
Where does Jasper & Japser LLC 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 Jasper & Japser LLC 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 January 2020. 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 Jasper & Japser LLC'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 January 2020. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Jasper & Japser LLC's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Jasper & Japser LLC 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 Mineral County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Quartz Flat Rest Stop West | Mineral | 3,301 | Transient non-community | Groundwater |
| Quartz Flat Rest Stop East | Mineral | 3,301 | Transient non-community | Groundwater |
| Dena Mora Saltese East Rest | Mineral | 3,000 | Transient non-community | Groundwater |
| Dena Mora Saltese West Rest | Mineral | 2,000 | Transient non-community | Groundwater |
| Superior Town of | Mineral | 1,100 | Community | Groundwater |
| Lincolns Silver Dollar Bar | Mineral | 520 | 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, “Jasper & Japser LLC, PWSID MT0003675, Montana”, https://aquacensus.com/water-systems/montana/jasper-japser-llc-mt0003675 (data as of October 1, 2026).