Surface Water Treatment Rule (SWTR) violations in Michigan
8 active public water systems in Michigan had a Surface Water Treatment Rule (SWTR) violation in the past three years, 1 of them in the latest quarter of EPA's data. What Surface Water Treatment Rule (SWTR) is and why it matters.
Systems with a Surface Water Treatment Rule (SWTR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Papin's Resort Chippewa County |
45 | 3 | 0 | |
|
Flat Rock Flat Rock · Wayne County |
10,541 | 2 | 0 | |
|
Muskegon Heights Muskegon Heights · Muskegon County |
9,917 | 3 | 0 | |
|
River Rouge River Rouge · Wayne County |
7,224 | 4 | 2 | |
|
Keweenaw Mountain Lodge Keweenaw County |
485 | 2 | 0 | |
|
Zeba County |
350 | 1 | 0 | |
|
Dnr-Fayette State Park Delta County |
250 | 2 | 0 | |
|
Great Lakes Water Authority Detroit · Wayne County |
0 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Surface Water Treatment Rule (SWTR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Surface Water Treatment Rule (SWTR) alone.
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.