Interim Enhanced Surface Water Treatment Rule violations in Minnesota
33 active public water systems in Minnesota had a Interim Enhanced Surface Water Treatment Rule violation in the past three years, 2 of them in the latest quarter of EPA's data. What Interim Enhanced Surface Water Treatment Rule is and why it matters.
Systems with a Interim Enhanced Surface Water Treatment Rule violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Grand Superior Lodge Lake County |
92 | 3 | 0 | |
|
Echo Trail Tavern St. Louis County |
50 | 2 | 1 | |
|
Thief River Falls Pennington County |
8,701 | 1 | 0 | |
|
Eveleth St. Louis County |
3,770 | 2 | 0 | |
|
Silver Bay Lake County |
1,826 | 2 | 1 | |
|
Grand Marais Cook County |
1,344 | 1 | 0 | |
|
Grand Portage County |
820 | 13 | 3 | |
|
Bluefin Bay Cook County |
435 | 3 | 0 | |
|
Camp Kooch-I-Ching Koochiching County |
200 | 2 | 1 | |
|
Judge C.r. Magney State Park Cook County |
200 | 3 | 1 | |
|
Naniboujou Lodge Cook County |
200 | 2 | 0 | |
|
YMCA Camp Menogyn Cook County |
150 | 4 | 1 | |
|
Beaver Bay Lake County |
130 | 1 | 0 | |
|
Flag Island Resort Lake of the Woods County |
120 | 4 | 1 | |
|
Sunset Lodge Lake of the Woods County |
110 | 5 | 1 | |
|
Knife Island Campground Carlton County |
100 | 1 | 0 | |
|
Poplar Haus Cook County |
100 | 3 | 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 | |
|
The Landing at Devil Track Lake Cook County |
80 | 3 | 1 | |
|
Cliff Dweller Cook County |
68 | 4 | 0 | |
|
Birchwood Wilderness Camp Cook County |
65 | 2 | 0 | |
|
Arrowhead Lodge and Resort St. Louis County |
60 | 4 | 1 | |
|
Lake Vermilion State Park St. Louis County |
60 | 3 | 0 | |
|
Church of Victory Pine County |
50 | 2 | 0 | |
|
Lodge of Whispering Pines St. Louis County |
45 | 3 | 1 | |
|
Williams & Hall Outfitters Lake County |
40 | 1 | 0 | |
|
Lake View Lodge St. Louis County |
38 | 4 | 1 | |
|
Knife Island Campground Showerhouse Carlton County |
25 | 4 | 1 | |
|
Sherrick's Wilderness Resort, Inc. St. Louis County |
25 | 3 | 1 | |
|
Temperance Landing Cook County |
25 | 3 | 1 | |
|
Timber Trail Lodge Lake County |
25 | 3 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Interim Enhanced Surface Water Treatment Rule, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Interim Enhanced Surface Water Treatment Rule 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.