Public water system · MT0000301
ActiveOpheim Town of
At a glance
Town of Opheim (PWSID MT0000301) is an active community water system in Valley County, Montana. It reports serving 111 people through 69 service connections. Its primary water source is purchased surface water, 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 September 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
111
Service connections
69
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Town of Opheim compare with other water systems in Valley County?
By EPA's size categories, Town of Opheim is a very small system (500 people or fewer). Valley County has 13 active public water systems. Its population served is well below the county average of 466 people per system, and accounts for 1.8% of the 6,060 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 Town of Opheim 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 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 Town of Opheim?
EPA lists Town of Opheim 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. 8 of the 13 active systems in Valley County (62%) are also owned by a local government.
Does Town of Opheim have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2021. The violations listed here began between January 2020 and September 2021. By type: 10 monitoring and reporting, 1 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 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 |
|---|---|---|---|---|
| 2021-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2020-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2020-01-01 | 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.
Town of Opheim: frequently asked questions
Who runs Town of Opheim?
Town of Opheim (PWSID MT0000301) is a community water system owned by a local government. It is regulated by the MT state drinking water program.
How many people does Town of Opheim serve?
Town of Opheim reports serving 111 people through 69 service connections in Valley County, Montana.
Where does Town of Opheim 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 Town of Opheim 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 September 2021. 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 Town of Opheim'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 September 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Town of Opheim's water quality report?
As a community water system, Town of Opheim 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 Valley County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Glasgow City of | Valley | 3,253 | Community | Surface water |
| Fort Peck Rural County Water District | Valley | 663 | Community | Purchased surface water |
| North Valley County Water and Sewer Dist | Valley | 450 | Community | Purchased surface water |
| Nashua Town of | Valley | 300 | Community | Purchased surface water |
| Hinsdale Water Department | Valley | 250 | Community | Groundwater |
| Vandalia Glasgow West Rest Area | Valley | 250 | 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, “Opheim Town of, PWSID MT0000301, Montana”, https://aquacensus.com/water-systems/montana/opheim-town-of-mt0000301 (data as of October 1, 2026).