County drinking water records
Mackinac County, MI drinking water systems
4 community water systems serve Mackinac County, MI, reporting 3,670 people served in all. A system that also serves other counties counts all of its customers here.
3 of them had at least one health-based violation in the last 10 years. 2 systems still have one unresolved.
2 rely mainly on groundwater and 2 on surface water, counting water bought from other systems.
Their lead service line inventories list 84 lead lines, 242 galvanized lines that must be replaced and 11 lines of unknown material.
- Community water systems
- 4
- People served, sum of each system's own figure
- 3,670
- Systems with a health-based violation, last 10 years
- 3
- Systems with one unresolved
- 2
- Lead service lines in inventories
- 84
Water systems serving Mackinac County
4 systemsPeople served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.
| System | Serves | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| St. Ignace | St. Ignace | 2,987 | Surface water | 1 | 1 | 84 |
| Mackinac Island | Mackinac Island | 583 | Surface water | 0 | 0 | 0 |
| Mack. Co. Housing-Curtis | Outside cities and towns | 50 | Groundwater | 1 | 1 | 0 |
| Mack. Co. Housing-Engadine | Naubinway and land outside it | 50 | Groundwater | 1 | 0 | 0 |
Cities and towns in Mackinac County
3 places- Mackinac Island1 system
- Naubinway1 system
- St. Ignace1 system
Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations