Sweet Grass County, Montana
15 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Greycliff Rest Area Eastbound | 2,500 | Groundwater | 25 | 11 |
| Greycliff Rest Area Westbound | 1,000 | Groundwater | 17 | 7 |
| Spring Creek Cg and Trout Ranch | 64 | Groundwater | 16 | 5 |
| Big Timber Koa | 600 | Groundwater | 12 | 4 |
| Camp Mimanagish | 50 | Groundwater | 14 | 2 |
| Big Timber City of | 1,650 | Surface Water | 4 | 2 |
| Town Pump 1033 Big Timber # 2 | 318 | Groundwater | 7 | 1 |
| Town Pump Big Timber Super 8 | 63 | Groundwater | 7 | 1 |
| Cottonwood Estates | 50 | Groundwater | 11 | 0 |
| Camp on the Boulder | 150 | Groundwater | 10 | 0 |
| Greycliff Mill | 150 | Groundwater | 5 | 0 |
| Stillwater East Boulder | 380 | Groundwater | 3 | 0 |
| Lazy K Bar Ranch | 69 | Groundwater | 3 | 0 |
| Clydehurst Christian Ranch | 175 | Groundwater | 2 | 0 |
| Strobel Trailer Court | 60 | Groundwater | 0 | 0 |