Oregon County Water Quality Reports

Baker County, OR: 4 Health Violations — 67/100 (2026)

2026 report: Baker County, OR scores 67/100 (Grade C). 15 ZIP codes analyzed. 66 EPA violations found. Free report with contaminant data and filter picks.

Benton County, OR: 3 Health Violations — 90/100 (2026)

2026 report: Benton County, OR scores 90/100 (Grade A). 6 ZIP codes analyzed. 24 EPA violations found. Free report with contaminant data and filter picks.

Clackamas County, OR: 22 Health Violations — 84/100 (2026)

2026 report: Clackamas County, OR scores 84/100 (Grade B). 27 ZIP codes analyzed. 264 EPA violations found. Free report with contaminant data and filter...

Clatsop County, OR: 8 Health Violations — 68/100 (2026)

2026 report: Clatsop County, OR scores 68/100 (Grade C). 7 ZIP codes analyzed. 97 EPA violations found. Free report with contaminant data and filter picks.

Columbia County, OR: 16 Health Violations — 66/100 (2026)

2026 report: Columbia County, OR scores 66/100 (Grade C). 8 ZIP codes analyzed. 195 EPA violations found. Free report with contaminant data and filter p...

Coos County, OR: 4 Health Violations — 81/100 (2026)

2026 report: Coos County, OR scores 81/100 (Grade B). 9 ZIP codes analyzed. 198 EPA violations found. Free report with contaminant data and filter picks.

Crook County, OR: 1 Health Violation — 63/100 (2026)

2026 report: Crook County, OR scores 63/100 (Grade C). 2 ZIP codes analyzed. 18 EPA violations found. Free report with contaminant data and filter picks.

Curry County, OR: 14 Health Violations — 80/100 (2026)

2026 report: Curry County, OR scores 80/100 (Grade B). 8 ZIP codes analyzed. 104 EPA violations found. Free report with contaminant data and filter picks.

Deschutes County, OR: 61 Violations — 89/100 (2026)

2026 report: Deschutes County, OR scores 89/100 (Grade A). 12 ZIP codes analyzed. 61 EPA violations found. Free report with contaminant data and filter ...

Douglas County, OR: 15 Health Violations — 81/100 (2026)

2026 report: Douglas County, OR scores 81/100 (Grade B). 27 ZIP codes analyzed. 202 EPA violations found. Free report with contaminant data and filter p...

Gilliam County, OR: 11 Violations — 71/100 (2026)

2026 report: Gilliam County, OR scores 71/100 (Grade B). 3 ZIP codes analyzed. 11 EPA violations found. Free report with contaminant data and filter picks.

Grant County, OR: PFAS Found in Water — 72/100 (2026)

2026 report: Grant County, OR scores 72/100 (Grade B). 12 ZIP codes analyzed. 46 EPA violations found. PFAS detected. Free report with contaminant data ...

Harney County, OR: 13 Violations — 61/100 (2026)

2026 report: Harney County, OR scores 61/100 (Grade C). 7 ZIP codes analyzed. 13 EPA violations found. Free report with contaminant data and filter picks.

Hood River County, OR: 1 Health Violation — 68/100 (2026)

2026 report: Hood River County, OR scores 68/100 (Grade C). 4 ZIP codes analyzed. 15 EPA violations found. Free report with contaminant data and filter ...

Jackson County, OR: 7 Health Violations — 86/100 (2026)

2026 report: Jackson County, OR scores 86/100 (Grade A). 16 ZIP codes analyzed. 113 EPA violations found. Free report with contaminant data and filter p...

Jefferson County, OR: 3 Violations — 73/100 (2026)

2026 report: Jefferson County, OR scores 73/100 (Grade B). 3 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter pi...

Josephine County, OR: 32 Health Violations — 71/100 (2026)

2026 report: Josephine County, OR scores 71/100 (Grade B). 10 ZIP codes analyzed. 183 EPA violations found. Free report with contaminant data and filter...

Klamath County, OR: 5 Health Violations — 69/100 (2026)

2026 report: Klamath County, OR scores 69/100 (Grade C). 18 ZIP codes analyzed. 79 EPA violations found. Free report with contaminant data and filter pi...

Lake County, OR: 1 Health Violation — 60/100 (2026)

2026 report: Lake County, OR scores 60/100 (Grade C). 11 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filter picks.

Lane County, OR: 20 Health Violations — 83/100 (2026)

2026 report: Lane County, OR scores 83/100 (Grade B). 35 ZIP codes analyzed. 179 EPA violations found. Free report with contaminant data and filter picks.

Lincoln County, OR: 8 Health Violations — 83/100 (2026)

2026 report: Lincoln County, OR scores 83/100 (Grade B). 18 ZIP codes analyzed. 197 EPA violations found. Free report with contaminant data and filter p...

Linn County, OR: 15 Health Violations — 80/100 (2026)

2026 report: Linn County, OR scores 80/100 (Grade B). 19 ZIP codes analyzed. 172 EPA violations found. Free report with contaminant data and filter picks.

Malheur County, OR: 11 Health Violations — 65/100 (2026)

2026 report: Malheur County, OR scores 65/100 (Grade C). 9 ZIP codes analyzed. 52 EPA violations found. Free report with contaminant data and filter picks.

Marion County, OR: 6 Health Violations — 89/100 (2026)

2026 report: Marion County, OR scores 89/100 (Grade A). 30 ZIP codes analyzed. 199 EPA violations found. Free report with contaminant data and filter pi...

Morrow County, OR: 2 Health Violations — 72/100 (2026)

2026 report: Morrow County, OR scores 72/100 (Grade B). 6 ZIP codes analyzed. 46 EPA violations found. Free report with contaminant data and filter picks.

Multnomah County, OR: 7 Health Violations — 79/100 (2026)

2026 report: Multnomah County, OR scores 79/100 (Grade B). 60 ZIP codes analyzed. 154 EPA violations found. Free report with contaminant data and filter...

Polk County, OR: 5 Health Violations — 91/100 (2026)

2026 report: Polk County, OR scores 91/100 (Grade A). 8 ZIP codes analyzed. 65 EPA violations found. Free report with contaminant data and filter picks.

Sherman County, OR: 11 Violations — 79/100 (2026)

2026 report: Sherman County, OR scores 79/100 (Grade B). 4 ZIP codes analyzed. 11 EPA violations found. Free report with contaminant data and filter picks.

Tillamook County, OR: 7 Health Violations — 85/100 (2026)

2026 report: Tillamook County, OR scores 85/100 (Grade A). 14 ZIP codes analyzed. 121 EPA violations found. Free report with contaminant data and filter...

Umatilla County, OR: 1 Health Violation — 74/100 (2026)

2026 report: Umatilla County, OR scores 74/100 (Grade B). 13 ZIP codes analyzed. 71 EPA violations found. Free report with contaminant data and filter p...

Union County, OR: 11 Violations — 78/100 (2026)

2026 report: Union County, OR scores 78/100 (Grade B). 7 ZIP codes analyzed. 11 EPA violations found. Free report with contaminant data and filter picks.

Wallowa County, OR: 42 Violations — 85/100 (2026)

2026 report: Wallowa County, OR scores 85/100 (Grade A). 5 ZIP codes analyzed. 42 EPA violations found. Free report with contaminant data and filter picks.

Wasco County, OR: 12 Health Violations — 72/100 (2026)

2026 report: Wasco County, OR scores 72/100 (Grade B). 8 ZIP codes analyzed. 100 EPA violations found. Free report with contaminant data and filter picks.

Washington County, OR: 6 Health Violations — 74/100 (2026)

2026 report: Washington County, OR scores 74/100 (Grade B). 27 ZIP codes analyzed. 162 EPA violations found. Free report with contaminant data and filte...

Wheeler County, OR Water Safety: 83/100 (2026)

2026 report: Wheeler County, OR scores 83/100 (Grade B). 3 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.

Yamhill County, OR: 5 Health Violations — 72/100 (2026)

2026 report: Yamhill County, OR scores 72/100 (Grade B). 11 ZIP codes analyzed. 150 EPA violations found. Free report with contaminant data and filter p...