Surface Water Treatment Rule (SWTR) violations in Minnesota
21 active public water systems in Minnesota had a Surface Water Treatment Rule (SWTR) violation in the past three years, 3 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 |
|---|---|---|---|---|
|
Grand Portage County |
820 | 13 | 3 | |
|
Gunflint Lodge Cook County |
180 | 3 | 0 | |
|
Grand Superior Lodge Lake County |
92 | 3 | 0 | |
|
Americinn of Tofte Cook County |
200 | 2 | 0 | |
|
YMCA Camp Menogyn Cook County |
150 | 4 | 1 | |
|
Flag Island Resort Lake of the Woods County |
120 | 4 | 1 | |
|
Sunset Lodge Lake of the Woods County |
110 | 5 | 1 | |
|
Temperance River State Park/upper Cpgrd. Cook County |
100 | 4 | 0 | |
|
Thunderbird Lodge Koochiching County |
100 | 3 | 0 | |
|
Wilderness Canoe Base the Island Cook County |
100 | 4 | 1 | |
|
Cliff Dweller Cook County |
68 | 4 | 0 | |
|
Arrowhead Lodge and Resort St. Louis County |
60 | 4 | 1 | |
|
Lake Vermilion State Park St. Louis County |
60 | 3 | 0 | |
|
Gunflint Pines Resort Cook County |
50 | 1 | 0 | |
|
Voyageur Canoe Outfitters Cook County |
50 | 3 | 0 | |
|
Harmony Beach Resort & Lodge St. Louis County |
40 | 3 | 1 | |
|
Lake View Lodge St. Louis County |
38 | 4 | 1 | |
|
Wilderness Bay Lodge Lake County |
35 | 2 | 0 | |
|
North Star Resort St. Louis County |
28 | 3 | 1 | |
|
Harmony Beach Resort & Lodge Villas St. Louis County |
25 | 3 | 1 | |
|
Knife Island Campground Showerhouse Carlton County |
25 | 4 | 1 |
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 Minnesota 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.