Public water system · MT0004861
ActiveBig Sky Sd Ophir Elementary School
At a glance
Big Sky Sd Ophir Elementary School (PWSID MT0004861) is an active non-transient non-community water system in Gallatin County, Montana. It reports serving 175 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in November 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
175
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Big Sky Sd Ophir Elementary School compare with other water systems in Gallatin County?
By EPA's size categories, Big Sky Sd Ophir Elementary School is a very small system (500 people or fewer). Gallatin County has 207 active public water systems. Its population served is well below the county average of 713 people per system, and accounts for 0.1% of the 147,534 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Big Sky Sd Ophir Elementary School is about 59% below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Montana has 319 active non-transient non-community water systems, 13% 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 Big Sky Sd Ophir Elementary School?
EPA lists Big Sky Sd Ophir Elementary School 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. 12 of the 207 active systems in Gallatin County (5.8%) are also owned by a local government.
Does Big Sky Sd Ophir Elementary School have drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in November 2024. The violations listed here began between April 2015 and November 2024. By type: 3 monitoring and reporting, 2 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2022-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2019-01-09 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2018-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 6 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.
Big Sky Sd Ophir Elementary School: frequently asked questions
Who runs Big Sky Sd Ophir Elementary School?
Big Sky Sd Ophir Elementary School (PWSID MT0004861) is a non-transient non-community water system owned by a local government. It is regulated by the MT state drinking water program.
How many people does Big Sky Sd Ophir Elementary School serve?
Big Sky Sd Ophir Elementary School reports serving 175 people through 1 service connection in Gallatin County, Montana.
Where does Big Sky Sd Ophir Elementary School 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 Big Sky Sd Ophir Elementary School have any drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in November 2024. 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 Big Sky Sd Ophir Elementary School'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 6 violations for this system; 1 is health-based, and the most recent began in November 2024. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Big Sky Sd Ophir Elementary School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Big Sky Sd Ophir Elementary School is a non-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 Gallatin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bozeman City of | Gallatin | 56,000 | Community | Surface water |
| Montana State University Bozeman | Gallatin | 19,200 | Non-transient non-community | Purchased surface water |
| Belgrade City of | Gallatin | 10,460 | Community | Groundwater |
| West Yellowstone Town of | Gallatin | 9,899 | Community | Groundwater |
| North Star Zoot Water | Gallatin | 4,323 | Community | Groundwater |
| River Rock County Water and Sewer Dist | Gallatin | 4,200 | 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, “Big Sky Sd Ophir Elementary School, PWSID MT0004861, Montana”, https://aquacensus.com/water-systems/montana/big-sky-sd-ophir-elementary-school-mt0004861 (data as of October 1, 2026).