Public water system · MT0003809
ActiveMountain Acres Mb Hm Pk
At a glance
Mountain Acres Mb Hm Pk (PWSID MT0003809) is an active community water system in Fergus County, Montana. It reports serving 320 people through 201 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
320
Service connections
201
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Mountain Acres Mb Hm Pk compare with other water systems in Fergus County?
By EPA's size categories, Mountain Acres Mb Hm Pk is a very small system (500 people or fewer). Fergus County has 21 active public water systems, and Mountain Acres Mb Hm Pk is the 5th-largest of them by population served. Its population served is about 40% below the county average of 533 people per system, and accounts for 2.9% of the 11,187 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active community water system reports serving 6,703 people, so Mountain Acres Mb Hm Pk is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Montana has 853 active community water systems, 36% of the state's 2,378 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 104 Montana systems (4.4%) list purchased groundwater as their primary source.
Who owns and regulates Mountain Acres Mb Hm Pk?
EPA lists Mountain Acres Mb Hm Pk 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. 15 of the 21 active systems in Fergus County (71%) are also privately owned.
Does Mountain Acres Mb Hm Pk have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in January 2025. The violations listed here began between September 2011 and January 2025. By type: 5 public notice, recordkeeping or other, 4 monitoring and reporting, 2 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 10 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2024-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2012-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2012-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2011-11-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-11-01 | Public notice, recordkeeping or otherFailure to Notify Other PWS · code 73 | Groundwater Rulecode 0700 | No | Resolved |
| 2011-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2011-10-01 | Public notice, recordkeeping or otherFailure to Notify Other PWS · code 73 | Groundwater Rulecode 0700 | No | Resolved |
| 2011-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2011-09-01 | Public notice, recordkeeping or otherFailure to Notify Other PWS · code 73 | Groundwater Rulecode 0700 | 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.
Mountain Acres Mb Hm Pk: frequently asked questions
Who runs Mountain Acres Mb Hm Pk?
Mountain Acres Mb Hm Pk (PWSID MT0003809) is a community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Mountain Acres Mb Hm Pk serve?
Mountain Acres Mb Hm Pk reports serving 320 people through 201 service connections in Fergus County, Montana.
Where does Mountain Acres Mb Hm Pk get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Mountain Acres Mb Hm Pk have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in January 2025. 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 Acres Mb Hm Pk'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, 2 are health-based, and the most recent began in January 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Mountain Acres Mb Hm Pk's water quality report?
As a community water system, Mountain Acres Mb Hm Pk must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Fergus County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lewistown City of | Fergus | 5,923 | Community | Groundwater |
| Lehrkinds Big Spring Water | Fergus | 2,575 | Non-transient non-community | Purchased groundwater |
| Eddies Corner | Fergus | 503 | Transient non-community | Groundwater |
| K-M Scout Ranch Water System | Fergus | 325 | Transient non-community | Groundwater |
| Winifred Town of | Fergus | 274 | Community | Groundwater |
| Denton Town of | Fergus | 255 | Community | Surface water |
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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, “Mountain Acres Mb Hm Pk, PWSID MT0003809, Montana”, https://aquacensus.com/water-systems/montana/mountain-acres-mb-hm-pk-mt0003809 (data as of October 1, 2026).