Minnesota County Water Quality Reports

Aitkin County, MN: 1 Health Violation — 65/100 (2026)

2026 report: Aitkin County, MN scores 65/100 (Grade C). 9 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter picks.

Anoka County, MN: 6 Violations — 64/100 (2026)

2026 report: Anoka County, MN scores 64/100 (Grade C). 43 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter picks.

Becker County, MN: 20 Health Violations — 49/100 (2026)

2026 report: Becker County, MN scores 49/100 (Grade D). 10 ZIP codes analyzed. 35 EPA violations found. Free report with contaminant data and filter picks.

Beltrami County, MN: 1 Health Violation — 62/100 (2026)

2026 report: Beltrami County, MN scores 62/100 (Grade C). 13 ZIP codes analyzed. 28 EPA violations found. Free report with contaminant data and filter p...

Benton County, MN: 4 Violations — 59/100 (2026)

2026 report: Benton County, MN scores 59/100 (Grade C). 15 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Big Stone County, MN: 6 Violations — 61/100 (2026)

2026 report: Big Stone County, MN scores 61/100 (Grade C). 6 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter pi...

Blue Earth County, MN: 1 Health Violation — 62/100 (2026)

2026 report: Blue Earth County, MN scores 62/100 (Grade C). 12 ZIP codes analyzed. 15 EPA violations found. Free report with contaminant data and filter...

Brown County, MN: High Radon Risk — 56/100 (2026)

2026 report: Brown County, MN scores 56/100 (Grade C). 7 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Carlton County, MN: 7 Violations — 70/100 (2026)

2026 report: Carlton County, MN scores 70/100 (Grade B). 12 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Carver County, MN: 1 Health Violation — 52/100 (2026)

2026 report: Carver County, MN scores 52/100 (Grade D). 22 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Cass County, MN: 5 Violations — 69/100 (2026)

2026 report: Cass County, MN scores 69/100 (Grade C). 11 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Chippewa County, MN: 1 Violation — 61/100 (2026)

2026 report: Chippewa County, MN scores 61/100 (Grade C). 5 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter picks.

Chisago County, MN: 2 Health Violations — 72/100 (2026)

2026 report: Chisago County, MN scores 72/100 (Grade B). 12 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filter pi...

Clay County, MN: 2 Health Violations — 63/100 (2026)

2026 report: Clay County, MN scores 63/100 (Grade C). 13 ZIP codes analyzed. 23 EPA violations found. Free report with contaminant data and filter picks.

Clearwater County, MN Water Safety: 67/100 (2026)

2026 report: Clearwater County, MN scores 67/100 (Grade C). 6 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Cook County, MN: 3 Violations — 59/100 (2026)

2026 report: Cook County, MN scores 59/100 (Grade C). 4 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter picks.

Cottonwood County, MN: 1 Violation — 66/100 (2026)

2026 report: Cottonwood County, MN scores 66/100 (Grade C). 6 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter pi...

Crow Wing County, MN: 8 Violations — 68/100 (2026)

2026 report: Crow Wing County, MN scores 68/100 (Grade C). 18 ZIP codes analyzed. 8 EPA violations found. Free report with contaminant data and filter p...

Dakota County, MN: 8 Health Violations — 58/100 (2026)

2026 report: Dakota County, MN scores 58/100 (Grade C). 18 ZIP codes analyzed. 23 EPA violations found. Free report with contaminant data and filter picks.

Dodge County, MN: 5 Violations — 64/100 (2026)

2026 report: Dodge County, MN scores 64/100 (Grade C). 7 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Douglas County, MN: 6 Violations — 58/100 (2026)

2026 report: Douglas County, MN scores 58/100 (Grade C). 11 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter picks.

Faribault County, MN: 2 Violations — 61/100 (2026)

2026 report: Faribault County, MN scores 61/100 (Grade C). 11 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter p...

Fillmore County, MN: 10 Violations — 61/100 (2026)

2026 report: Fillmore County, MN scores 61/100 (Grade C). 13 ZIP codes analyzed. 10 EPA violations found. Free report with contaminant data and filter p...

Freeborn County, MN: 3 Health Violations — 61/100 (2026)

2026 report: Freeborn County, MN scores 61/100 (Grade C). 12 ZIP codes analyzed. 13 EPA violations found. Free report with contaminant data and filter p...

Goodhue County, MN: 1 Health Violation — 63/100 (2026)

2026 report: Goodhue County, MN scores 63/100 (Grade C). 10 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Grant County, MN: High Radon Risk — 66/100 (2026)

2026 report: Grant County, MN scores 66/100 (Grade C). 5 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Hennepin County, MN: 68 Violations — 64/100 (2026)

2026 report: Hennepin County, MN scores 64/100 (Grade C). 107 ZIP codes analyzed. 68 EPA violations found. Free report with contaminant data and filter ...

Houston County, MN: 3 Violations — 56/100 (2026)

2026 report: Houston County, MN scores 56/100 (Grade C). 8 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter picks.

Hubbard County, MN: 5 Violations — 53/100 (2026)

2026 report: Hubbard County, MN scores 53/100 (Grade D). 8 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Isanti County, MN Water Safety: 68/100 (2026)

2026 report: Isanti County, MN scores 68/100 (Grade C). 5 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Itasca County, MN: 7 Violations — 69/100 (2026)

2026 report: Itasca County, MN scores 69/100 (Grade C). 24 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Jackson County, MN: 1 Health Violation — 64/100 (2026)

2026 report: Jackson County, MN scores 64/100 (Grade C). 6 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filter picks.

Kanabec County, MN: 1 Health Violation — 62/100 (2026)

2026 report: Kanabec County, MN scores 62/100 (Grade C). 3 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Kandiyohi County, MN: 13 Health Violations — 61/100 (2026)

2026 report: Kandiyohi County, MN scores 61/100 (Grade C). 10 ZIP codes analyzed. 37 EPA violations found. Free report with contaminant data and filter ...

Kittson County, MN: 14 Health Violations — 52/100 (2026)

2026 report: Kittson County, MN scores 52/100 (Grade D). 10 ZIP codes analyzed. 32 EPA violations found. Free report with contaminant data and filter pi...

Koochiching County, MN: 3 Violations — 63/100 (2026)

2026 report: Koochiching County, MN scores 63/100 (Grade C). 12 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter...

Lac qui Parle County, MN: 6 Violations — 66/100 (2026)

2026 report: Lac qui Parle County, MN scores 66/100 (Grade C). 6 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filte...

Lake County, MN: 8 Violations — 61/100 (2026)

2026 report: Lake County, MN scores 61/100 (Grade C). 7 ZIP codes analyzed. 8 EPA violations found. Free report with contaminant data and filter picks.

Lake of the Woods County, MN: 3 Violations — 66/100 (2026)

2026 report: Lake of the Woods County, MN scores 66/100 (Grade C). 3 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and f...

Le Sueur County, MN: 3 Violations — 61/100 (2026)

2026 report: Le Sueur County, MN scores 61/100 (Grade C). 9 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter picks.

Lincoln County, MN: High Radon Risk — 67/100 (2026)

2026 report: Lincoln County, MN scores 67/100 (Grade C). 5 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Lyon County, MN: 1 Violation — 61/100 (2026)

2026 report: Lyon County, MN scores 61/100 (Grade C). 8 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter picks.

Mahnomen County, MN: 4 Violations — 53/100 (2026)

2026 report: Mahnomen County, MN scores 53/100 (Grade D). 4 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Marshall County, MN: Lead Above EPA Limits — 55/100 (2026)

2026 report: Marshall County, MN scores 55/100 (Grade C). 12 ZIP codes analyzed. 3 EPA violations found. Lead above EPA limits. Free report with contami...

Martin County, MN: 1 Health Violation — 62/100 (2026)

2026 report: Martin County, MN scores 62/100 (Grade C). 8 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

McLeod County, MN: 3 Health Violations — 64/100 (2026)

2026 report: McLeod County, MN scores 64/100 (Grade C). 8 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Meeker County, MN: 4 Health Violations — 64/100 (2026)

2026 report: Meeker County, MN scores 64/100 (Grade C). 7 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Mille Lacs County, MN: 12 Violations — 73/100 (2026)

2026 report: Mille Lacs County, MN scores 73/100 (Grade B). 9 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filter ...

Morrison County, MN: 1 Health Violation — 73/100 (2026)

2026 report: Morrison County, MN scores 73/100 (Grade B). 12 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter pi...

Mower County, MN: 1 Health Violation — 60/100 (2026)

2026 report: Mower County, MN scores 60/100 (Grade C). 13 ZIP codes analyzed. 18 EPA violations found. Free report with contaminant data and filter picks.

Murray County, MN: Lead Above EPA Limits — 62/100 (2026)

2026 report: Murray County, MN scores 62/100 (Grade C). 10 ZIP codes analyzed. 7 EPA violations found. Lead above EPA limits. Free report with contamina...

Nicollet County, MN: 3 Health Violations — 61/100 (2026)

2026 report: Nicollet County, MN scores 61/100 (Grade C). 6 ZIP codes analyzed. 18 EPA violations found. Free report with contaminant data and filter pi...

Nobles County, MN: 3 Health Violations — 64/100 (2026)

2026 report: Nobles County, MN scores 64/100 (Grade C). 10 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Norman County, MN: 1 Health Violation — 60/100 (2026)

2026 report: Norman County, MN scores 60/100 (Grade C). 10 ZIP codes analyzed. 15 EPA violations found. Free report with contaminant data and filter picks.

Olmsted County, MN: 19 Violations — 60/100 (2026)

2026 report: Olmsted County, MN scores 60/100 (Grade C). 12 ZIP codes analyzed. 19 EPA violations found. Free report with contaminant data and filter pi...

Otter Tail County, MN: 27 Health Violations — 57/100 (2026)

2026 report: Otter Tail County, MN scores 57/100 (Grade C). 19 ZIP codes analyzed. 32 EPA violations found. Free report with contaminant data and filter...

Pennington County, MN: 1 Health Violation — 53/100 (2026)

2026 report: Pennington County, MN scores 53/100 (Grade D). 3 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter p...

Pine County, MN: 7 Violations — 71/100 (2026)

2026 report: Pine County, MN scores 71/100 (Grade B). 9 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Pipestone County, MN: 2 Violations — 64/100 (2026)

2026 report: Pipestone County, MN scores 64/100 (Grade C). 8 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter pi...

Polk County, MN: Lead Above EPA Limits — 56/100 (2026)

2026 report: Polk County, MN scores 56/100 (Grade C). 15 ZIP codes analyzed. 25 EPA violations found. Lead above EPA limits. Free report with contaminan...

Pope County, MN: 8 Violations — 60/100 (2026)

2026 report: Pope County, MN scores 60/100 (Grade C). 7 ZIP codes analyzed. 8 EPA violations found. Free report with contaminant data and filter picks.

Red Lake County, MN: 1 Violation — 57/100 (2026)

2026 report: Red Lake County, MN scores 57/100 (Grade C). 5 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter picks.

Redwood County, MN: 8 Violations — 59/100 (2026)

2026 report: Redwood County, MN scores 59/100 (Grade C). 14 ZIP codes analyzed. 8 EPA violations found. Free report with contaminant data and filter picks.

Renville County, MN: Lead Above EPA Limits — 60/100 (2026)

2026 report: Renville County, MN scores 60/100 (Grade C). 9 ZIP codes analyzed. 3 EPA violations found. Lead above EPA limits. Free report with contamin...

Rice County, MN: 1 Health Violation — 56/100 (2026)

2026 report: Rice County, MN scores 56/100 (Grade C). 11 ZIP codes analyzed. 25 EPA violations found. Free report with contaminant data and filter picks.

Rock County, MN: 4 Violations — 59/100 (2026)

2026 report: Rock County, MN scores 59/100 (Grade C). 8 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Roseau County, MN: 22 Violations — 51/100 (2026)

2026 report: Roseau County, MN scores 51/100 (Grade D). 10 ZIP codes analyzed. 22 EPA violations found. Free report with contaminant data and filter picks.

Scott County, MN: 1 Health Violation — 65/100 (2026)

2026 report: Scott County, MN scores 65/100 (Grade C). 6 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Sherburne County, MN: 3 Violations — 63/100 (2026)

2026 report: Sherburne County, MN scores 63/100 (Grade C). 6 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter pi...

Sibley County, MN: 16 Health Violations — 59/100 (2026)

2026 report: Sibley County, MN scores 59/100 (Grade C). 8 ZIP codes analyzed. 18 EPA violations found. Free report with contaminant data and filter picks.

St. Louis County, MN: Lead Above EPA Limits — 67/100 (2026)

2026 report: St. Louis County, MN scores 67/100 (Grade C). 54 ZIP codes analyzed. 28 EPA violations found. Lead above EPA limits. Free report with conta...

Stearns County, MN: 2 Health Violations — 58/100 (2026)

2026 report: Stearns County, MN scores 58/100 (Grade C). 26 ZIP codes analyzed. 17 EPA violations found. Free report with contaminant data and filter pi...

Steele County, MN: 1 Health Violation — 59/100 (2026)

2026 report: Steele County, MN scores 59/100 (Grade C). 4 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Stevens County, MN: 9 Health Violations — 58/100 (2026)

2026 report: Stevens County, MN scores 58/100 (Grade C). 5 ZIP codes analyzed. 21 EPA violations found. Free report with contaminant data and filter picks.

Swift County, MN: 2 Violations — 57/100 (2026)

2026 report: Swift County, MN scores 57/100 (Grade C). 7 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter picks.

Todd County, MN: Lead Above EPA Limits — 56/100 (2026)

2026 report: Todd County, MN scores 56/100 (Grade C). 11 ZIP codes analyzed. 6 EPA violations found. Lead above EPA limits. Free report with contaminant...

Traverse County, MN: 6 Health Violations — 56/100 (2026)

2026 report: Traverse County, MN scores 56/100 (Grade C). 6 ZIP codes analyzed. 10 EPA violations found. Free report with contaminant data and filter pi...

Wabasha County, MN: 6 Violations — 61/100 (2026)

2026 report: Wabasha County, MN scores 61/100 (Grade C). 9 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter picks.

Wadena County, MN: 1 Violation — 55/100 (2026)

2026 report: Wadena County, MN scores 55/100 (Grade C). 5 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter picks.

Waseca County, MN: 1 Violation — 66/100 (2026)

2026 report: Waseca County, MN scores 66/100 (Grade C). 4 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter picks.

Washington County, MN: 21 Violations — 55/100 (2026)

2026 report: Washington County, MN scores 55/100 (Grade C). 20 ZIP codes analyzed. 21 EPA violations found. Free report with contaminant data and filter...

Watonwan County, MN: 4 Violations — 60/100 (2026)

2026 report: Watonwan County, MN scores 60/100 (Grade C). 7 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Wilkin County, MN: 6 Violations — 57/100 (2026)

2026 report: Wilkin County, MN scores 57/100 (Grade C). 6 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter picks.

Winona County, MN: 3 Health Violations — 63/100 (2026)

2026 report: Winona County, MN scores 63/100 (Grade C). 8 ZIP codes analyzed. 10 EPA violations found. Free report with contaminant data and filter picks.

Wright County, MN: 16 Health Violations — 62/100 (2026)

2026 report: Wright County, MN scores 62/100 (Grade C). 30 ZIP codes analyzed. 98 EPA violations found. Free report with contaminant data and filter picks.

Yellow Medicine County, MN: High Radon Risk — 63/100 (2026)

2026 report: Yellow Medicine County, MN scores 63/100 (Grade C). 6 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter p...