Michigan
Ontonagon County drinking water quality
26 active public water systems serve 5,345 people in Ontonagon County. 13 are compliant, 13 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
5 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ontonagon Ontonagon |
2,607 | 0 | 0 | |
|
McMillan Township Ewen |
391 | 0 | 0 | |
|
Rockland Township Rockland |
350 | 4 | 0 | |
|
Bergland Township Bergland |
210 | 0 | 0 | |
|
Interior Township Trout Creek |
200 | 3 | 0 |
Non-community systems (21: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
North Coast Adventures Campground |
180 | 1 | 0 | |
|
Settlers Cooperative |
150 | 0 | 0 | |
|
Stannard Township Hall |
127 | 0 | 0 | |
|
Ontonagon County Park |
120 | 2 | 0 | |
|
Char's Cafe |
100 | 0 | 0 | |
|
Tige's Bar |
100 | 1 | 0 | |
|
Bruce's Tap House |
80 | 0 | 0 | |
|
Dollar General Bruce Crossing #19570 |
75 | 0 | 0 | |
|
Logger's Alley |
75 | 0 | 0 | |
|
Mdot Ewen Pines Wayside, P152 |
75 | 0 | 0 | |
|
Pit Stop Bar & Grill |
70 | 1 | 0 | |
|
Miller's Cottages |
60 | 1 | 0 | |
|
Rousseau Bar |
60 | 1 | 0 | |
|
Ajs Lodge & Oven |
50 | 2 | 0 | |
|
BP #129171 Mass City |
50 | 2 | 0 | |
|
Hoop N Holler Tavern |
50 | 1 | 0 | |
|
St. Paul's Lutheran Church Mass City |
50 | 0 | 0 | |
|
Greenland Twp Community Center |
30 | 1 | 0 | |
|
Mdot Military Hill Wayside, P150 |
30 | 0 | 0 | |
|
Paulding General Store |
30 | 1 | 0 | |
|
Mdot Agate Falls Wayside, P153 |
25 | 0 | 0 |
Inactive systems (63, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Michigan records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.