Tap Truth EPA drinking water records, in plain English

County drinking water records

Ontonagon County, MI drinking water systems

5 community water systems serve Ontonagon County, MI, reporting 3,758 people served in all.

None of them had a health-based violation in the last 10 years.

4 rely mainly on groundwater and 1 on surface water, counting water bought from other systems.

Their lead service line inventories list 103 lead lines, 45 galvanized lines that must be replaced and 92 lines of unknown material.

Community water systems
5
People served, sum of each system's own figure
3,758
Systems with a health-based violation, last 10 years
0
Systems with one unresolved
0
Lead service lines in inventories
103

Water systems serving Ontonagon County

5 systems

People 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
Ontonagon Ontonagon 2,607 Surface water 0 0 0
McMillan Township Ewen 391 Groundwater 0 0 0
Rockland Township Rockland 350 Groundwater 0 0 15
Bergland Township Bergland 210 Groundwater 0 0 88
Interior Township Outside cities and towns 200 Groundwater 0 0 0

Cities and towns in Ontonagon County

4 places

Back to Michigan

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