Public water system · MT0001682
ActiveBig Timber Koa
Transient non-community water system in Sweet Grass County, Montana, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
57
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | 2D | 8000 | Yes | Unaddressed |
| 2025-07-01 | 3A | 8000 | No | Archived |
| 2022-08-01 | 3A | 8000 | No | Resolved |
| 2022-04-02 | 2D | 8000 | Yes | Resolved |
| 2022-01-01 | 03 | 1038 | No | Resolved |
| 2021-07-01 | 3A | 8000 | No | Resolved |
| 2020-06-02 | 4C | 8000 | No | Resolved |
| 2016-06-02 | 2D | 8000 | Yes | Resolved |
| 2008-09-01 | 23 | 3100 | No | Resolved |
| 2008-05-01 | 23 | 3100 | No | Resolved |
| 2007-09-01 | 23 | 3100 | No | Resolved |
| 2006-09-01 | 23 | 3100 | No | Resolved |
Big Timber Koa: frequently asked questions
Is Big Timber Koa's water safe to drink?
Big Timber Koa is an active transient non-community water system regulated under the Safe Drinking Water Act, overseen by the MT state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs Big Timber Koa?
Big Timber Koa (PWSID MT0001682) is a private-owned transient non-community water system, regulated by the MT state drinking water program.
How many people does Big Timber Koa serve?
Big Timber Koa reports serving 600 people through 57 service connections in Sweet Grass County, Montana.
Where does Big Timber Koa get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in Sweet Grass County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Greycliff Rest Area Eastbound | Sweet Grass | 2,500 | Transient non-community | Groundwater |
| Big Timber City of | Sweet Grass | 1,650 | Community | Surface water |
| Greycliff Rest Area Westbound | Sweet Grass | 1,000 | Transient non-community | Groundwater |
| Stillwater East Boulder | Sweet Grass | 380 | Non-transient non-community | Groundwater |
| Town Pump 1033 Big Timber # 2 | Sweet Grass | 318 | Transient non-community | Groundwater |
| Clydehurst Christian Ranch | Sweet Grass | 175 | Transient non-community | Groundwater |