North Dakota County Water Quality Reports

Adams County, ND: High Radon Risk — 59/100 (2026)

2026 report: Adams County, ND scores 59/100 (Grade C). 2 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Barnes County, ND: 5 Violations — 54/100 (2026)

2026 report: Barnes County, ND scores 54/100 (Grade D). 13 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Benson County, ND: 2 Health Violations — 52/100 (2026)

2026 report: Benson County, ND scores 52/100 (Grade D). 9 ZIP codes analyzed. 25 EPA violations found. Free report with contaminant data and filter picks.

Billings County, ND: 2 Violations — 51/100 (2026)

2026 report: Billings County, ND scores 51/100 (Grade D). 2 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter picks.

Bottineau County, ND: Lead Above EPA Limits — 54/100 (2026)

2026 report: Bottineau County, ND scores 54/100 (Grade D). 7 ZIP codes analyzed. 15 EPA violations found. Lead above EPA limits. Free report with contam...

Bowman County, ND: 2 Violations — 57/100 (2026)

2026 report: Bowman County, ND scores 57/100 (Grade C). 4 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter picks.

Burke County, ND: 3 Health Violations — 66/100 (2026)

2026 report: Burke County, ND scores 66/100 (Grade C). 6 ZIP codes analyzed. 11 EPA violations found. Free report with contaminant data and filter picks.

Burleigh County, ND: 2 Violations — 51/100 (2026)

2026 report: Burleigh County, ND scores 51/100 (Grade D). 14 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter pi...

Cass County, ND: 1 Health Violation — 58/100 (2026)

2026 report: Cass County, ND scores 58/100 (Grade C). 37 ZIP codes analyzed. 23 EPA violations found. Free report with contaminant data and filter picks.

Cavalier County, ND: 5 Violations — 50/100 (2026)

2026 report: Cavalier County, ND scores 50/100 (Grade D). 17 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter pi...

Dickey County, ND: 2 Health Violations — 65/100 (2026)

2026 report: Dickey County, ND scores 65/100 (Grade C). 4 ZIP codes analyzed. 21 EPA violations found. Free report with contaminant data and filter picks.

Divide County, ND: 1 Health Violation — 55/100 (2026)

2026 report: Divide County, ND scores 55/100 (Grade C). 4 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Dunn County, ND: 6 Violations — 52/100 (2026)

2026 report: Dunn County, ND scores 52/100 (Grade D). 8 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter picks.

Eddy County, ND: 6 Violations — 63/100 (2026)

2026 report: Eddy County, ND scores 63/100 (Grade C). 2 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter picks.

Emmons County, ND: 15 Violations — 53/100 (2026)

2026 report: Emmons County, ND scores 53/100 (Grade D). 8 ZIP codes analyzed. 15 EPA violations found. Free report with contaminant data and filter picks.

Foster County, ND: 1 Violation — 56/100 (2026)

2026 report: Foster County, ND scores 56/100 (Grade C). 4 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter picks.

Golden Valley County, ND: 4 Violations — 64/100 (2026)

2026 report: Golden Valley County, ND scores 64/100 (Grade C). 3 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filte...

Grand Forks County, ND: 12 Violations — 55/100 (2026)

2026 report: Grand Forks County, ND scores 55/100 (Grade C). 22 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filte...

Grant County, ND: 4 Violations — 60/100 (2026)

2026 report: Grant County, ND scores 60/100 (Grade C). 6 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Griggs County, ND: 4 Violations — 58/100 (2026)

2026 report: Griggs County, ND scores 58/100 (Grade C). 6 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.

Hettinger County, ND: 9 Violations — 54/100 (2026)

2026 report: Hettinger County, ND scores 54/100 (Grade D). 3 ZIP codes analyzed. 9 EPA violations found. Free report with contaminant data and filter pi...

Kidder County, ND: 2 Violations — 52/100 (2026)

2026 report: Kidder County, ND scores 52/100 (Grade D). 5 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter picks.

LaMoure County, ND: 8 Violations — 77/100 (2026)

2026 report: LaMoure County, ND scores 77/100 (Grade B). 7 ZIP codes analyzed. 8 EPA violations found. Free report with contaminant data and filter picks.

Logan County, ND: High Radon Risk — 60/100 (2026)

2026 report: Logan County, ND scores 60/100 (Grade C). 3 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

McHenry County, ND: 1 Health Violation — 49/100 (2026)

2026 report: McHenry County, ND scores 49/100 (Grade D). 14 ZIP codes analyzed. 14 EPA violations found. Free report with contaminant data and filter pi...

McIntosh County, ND: 3 Violations — 61/100 (2026)

2026 report: McIntosh County, ND scores 61/100 (Grade C). 5 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter picks.

McKenzie County, ND: 1 Health Violation — 56/100 (2026)

2026 report: McKenzie County, ND scores 56/100 (Grade C). 5 ZIP codes analyzed. 13 EPA violations found. Free report with contaminant data and filter pi...

McLean County, ND: 8 Violations — 57/100 (2026)

2026 report: McLean County, ND scores 57/100 (Grade C). 11 ZIP codes analyzed. 8 EPA violations found. Free report with contaminant data and filter picks.

Mercer County, ND: 1 Violation — 66/100 (2026)

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

Morton County, ND: 12 Violations — 61/100 (2026)

2026 report: Morton County, ND scores 61/100 (Grade C). 6 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filter picks.

Mountrail County, ND: 12 Violations — 53/100 (2026)

2026 report: Mountrail County, ND scores 53/100 (Grade D). 6 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filter p...

Nelson County, ND: 8 Violations — 59/100 (2026)

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

Oliver County, ND: 3 Violations — 69/100 (2026)

2026 report: Oliver County, ND scores 69/100 (Grade C). 2 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter picks.

Pembina County, ND: 7 Violations — 58/100 (2026)

2026 report: Pembina County, ND scores 58/100 (Grade C). 10 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Pierce County, ND: 2 Violations — 55/100 (2026)

2026 report: Pierce County, ND scores 55/100 (Grade C). 2 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter picks.

Ramsey County, ND: High Radon Risk — 53/100 (2026)

2026 report: Ramsey County, ND scores 53/100 (Grade D). 6 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Ransom County, ND: 2 Violations — 56/100 (2026)

2026 report: Ransom County, ND scores 56/100 (Grade C). 4 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter picks.

Renville County, ND: 2 Violations — 52/100 (2026)

2026 report: Renville County, ND scores 52/100 (Grade D). 6 ZIP codes analyzed. 2 EPA violations found. Free report with contaminant data and filter picks.

Richland County, ND: 10 Violations — 66/100 (2026)

2026 report: Richland County, ND scores 66/100 (Grade C). 14 ZIP codes analyzed. 10 EPA violations found. Free report with contaminant data and filter p...

Rolette County, ND: 1 Health Violation — 55/100 (2026)

2026 report: Rolette County, ND scores 55/100 (Grade C). 6 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.

Sargent County, ND: 3 Health Violations — 50/100 (2026)

2026 report: Sargent County, ND scores 50/100 (Grade D). 7 ZIP codes analyzed. 10 EPA violations found. Free report with contaminant data and filter picks.

Sheridan County, ND: 2 Health Violations — 53/100 (2026)

2026 report: Sheridan County, ND scores 53/100 (Grade D). 5 ZIP codes analyzed. 16 EPA violations found. Free report with contaminant data and filter pi...

Slope County, ND: High Radon Risk — 66/100 (2026)

2026 report: Slope County, ND scores 66/100 (Grade C). 1 ZIP code analyzed. No EPA violations. Free report with contaminant data and filter picks.

Stark County, ND: 7 Violations — 59/100 (2026)

2026 report: Stark County, ND scores 59/100 (Grade C). 8 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter picks.

Steele County, ND: High Radon Risk — 66/100 (2026)

2026 report: Steele County, ND scores 66/100 (Grade C). 2 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Stutsman County, ND: 1 Health Violation — 56/100 (2026)

2026 report: Stutsman County, ND scores 56/100 (Grade C). 16 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter pi...

Towner County, ND: 3 Violations — 49/100 (2026)

2026 report: Towner County, ND scores 49/100 (Grade D). 11 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter picks.

Traill County, ND: 5 Violations — 53/100 (2026)

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

Walsh County, ND: 1 Violation — 56/100 (2026)

2026 report: Walsh County, ND scores 56/100 (Grade C). 8 ZIP codes analyzed. 1 EPA violation found. Free report with contaminant data and filter picks.

Ward County, ND: 20 Violations — 51/100 (2026)

2026 report: Ward County, ND scores 51/100 (Grade D). 17 ZIP codes analyzed. 20 EPA violations found. Free report with contaminant data and filter picks.

Wells County, ND: 2 Health Violations — 53/100 (2026)

2026 report: Wells County, ND scores 53/100 (Grade D). 6 ZIP codes analyzed. 27 EPA violations found. Free report with contaminant data and filter picks.

Williams County, ND: 9 Violations — 56/100 (2026)

2026 report: Williams County, ND scores 56/100 (Grade C). 13 ZIP codes analyzed. 9 EPA violations found. Free report with contaminant data and filter pi...