Public water system · MT0000458
ActiveAshland Water and Sewer Dist
At a glance
Ashland Water and Sewer Dist (PWSID MT0000458) is an active community water system in Rosebud County, Montana. It reports serving 400 people through 98 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in February 2026.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
98
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Ashland Water and Sewer Dist compare with other water systems in Rosebud County?
By EPA's size categories, Ashland Water and Sewer Dist is a very small system (500 people or fewer). Rosebud County has 15 active public water systems, and Ashland Water and Sewer Dist is the 6th-largest of them by population served. Its population served is about 19% below the county average of 494 people per system, and accounts for 5.4% of the 7,415 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 Ashland Water and Sewer Dist 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. 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 Ashland Water and Sewer Dist?
EPA lists Ashland Water and Sewer Dist as owned by a local 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. 4 of the 15 active systems in Rosebud County (27%) are also owned by a local government.
Does Ashland Water and Sewer Dist have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in February 2026. The violations listed here began between July 2021 and February 2026. By type: 7 monitoring and reporting, 2 monitoring, 2 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Fluoride (4 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 |
|---|---|---|---|---|
| 2026-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-08-10 | Required treatment not metTreatment Technique, Corrective/Expedited Actions (RTCR) · code 2C | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2023-05-25 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2022-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2022-05-31 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2021-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | 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.
Ashland Water and Sewer Dist: frequently asked questions
Who runs Ashland Water and Sewer Dist?
Ashland Water and Sewer Dist (PWSID MT0000458) is a community water system owned by a local government. It is regulated by the MT state drinking water program.
How many people does Ashland Water and Sewer Dist serve?
Ashland Water and Sewer Dist reports serving 400 people through 98 service connections in Rosebud County, Montana.
Where does Ashland Water and Sewer Dist 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 Ashland Water and Sewer Dist have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in February 2026. 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 Ashland Water and Sewer Dist'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, one is health-based, and the most recent began in February 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Ashland Water and Sewer Dist's water quality report?
As a community water system, Ashland Water and Sewer Dist 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 Rosebud County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Colstrip City of | Rosebud | 2,350 | Community | Surface water |
| Forsyth City of | Rosebud | 2,260 | Community | Surface water |
| St Labre Indian School | Rosebud | 650 | Community | Groundwater |
| Wb Hathaway Rest Area | Rosebud | 600 | Transient non-community | Groundwater |
| East Bound Hathaway Rest Area | Rosebud | 600 | Transient non-community | Groundwater |
| Western Energy Company | Rosebud | 200 | Non-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, “Ashland Water and Sewer Dist, PWSID MT0000458, Montana”, https://aquacensus.com/water-systems/montana/ashland-water-and-sewer-dist-mt0000458 (data as of October 1, 2026).