Public water system · MT0003493
ActiveMariners Haven Subdivision
At a glance
Mariners Haven Subdivision (PWSID MT0003493) is an active transient non-community water system in Lincoln County, Montana. It reports serving 251 people through 196 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; none is health-based, and the most recent began in April 2012.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
251
Service connections
196
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mariners Haven Subdivision compare with other water systems in Lincoln County?
By EPA's size categories, Mariners Haven Subdivision is a very small system (500 people or fewer). Lincoln County has 92 active public water systems. Its population served is about 19% above the county average of 212 people per system, and accounts for 1.3% of the 19,484 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 Mariners Haven Subdivision is about 74% above 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 Mariners Haven Subdivision?
EPA lists Mariners Haven Subdivision 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. 64 of the 92 active systems in Lincoln County (70%) are also privately owned.
Does Mariners Haven Subdivision have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in April 2012. The violations listed here began between May 1996 and April 2012. By type: 8 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2012-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 8 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.
Mariners Haven Subdivision: frequently asked questions
Who runs Mariners Haven Subdivision?
Mariners Haven Subdivision (PWSID MT0003493) is a transient non-community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Mariners Haven Subdivision serve?
Mariners Haven Subdivision reports serving 251 people through 196 service connections in Lincoln County, Montana.
Where does Mariners Haven Subdivision 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 Mariners Haven Subdivision have any drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in April 2012. 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 Mariners Haven Subdivision'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 8 violations for this system; none is health-based, and the most recent began in April 2012. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Mariners Haven Subdivision's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mariners Haven Subdivision 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 Lincoln County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Libby City of | Lincoln | 4,892 | Community | Surface water |
| Troy City of | Lincoln | 2,100 | Community | Groundwater |
| Eureka Town of | Lincoln | 1,995 | Community | Surface water |
| Bears Country Store | Lincoln | 805 | Transient non-community | Groundwater |
| Fortine Mercantile | Lincoln | 504 | Transient non-community | Groundwater |
| Indian Springs Ranch Sub | Lincoln | 455 | 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, “Mariners Haven Subdivision, PWSID MT0003493, Montana”, https://aquacensus.com/water-systems/montana/mariners-haven-subdivision-mt0003493 (data as of October 1, 2026).