Tapcensus

Groundwater Rule (GWR) violations in Minnesota

16 active public water systems in Minnesota had a Groundwater Rule (GWR) violation in the past three years, 11 of them in the latest quarter of EPA's data. What Groundwater Rule (GWR) is and why it matters.

Health effects: Protects against enteric viruses, which can contaminate groundwater via cracked well casings, failing septic systems, or animal waste. Viruses persist longer in groundwater than in surface water. Hepatitis A and norovirus are the primary pathogens of concern.

Systems with a Groundwater Rule (GWR) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Redby/red Lake
County
2,099 8 2
Vermilion
County
450 5 1
Ponemah
County
371 9 1
Nett Lake
County
295 6 1
Palisade
Aitkin County
166 3 1
Dunmire's on the Lakes
Crow Wing County
100 2 2
Shangri-La Resort
St. Louis County
55 1 0
All Craft Exteriors
Olmsted County
50 3 2
Jack's Shack
Aitkin County
50 1 1
Aspenwood Townhomes
Cook County
25 3 1
Holiday Stationstore No. 3517
Cook County
25 2 1
Split Rock Lighthouse Historic Site
Lake County
967 1 0
Sunset Resort, Inc.
St. Louis County
140 2 0
Northern Tier High Adventure-Bsa
Lake County
110 3 1
Myrtle Lake Resort
St. Louis County
70 3 1
Timber's Edge Grill and Bar
St. Louis County
25 3 1
About this data

A system is counted once if any of its violations in the past three years involved Groundwater Rule (GWR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Groundwater Rule (GWR) 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.