Ontonagon County, Michigan
5 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Rockland Township | 350 | Groundwater | 21 | 0 |
| Interior Township | 200 | Groundwater | 20 | 0 |
| Mcmillan Township | 391 | Groundwater | 11 | 0 |
| Ontonagon | 2,607 | Surface Water | 7 | 0 |
| Bergland Township | 210 | Groundwater | 0 | 0 |