Oregon Tap Water Quality
Explore tap water quality data for counties across Oregon. View water system reports, track violations, monitor drinking water safety, and check fluoridation status in your community.
Total Counties
36
Communities with public water systems
Total Population
3,718,715
Residents served by public water systems
Water Systems
931
Public water systems statewide
Serious Violators
18
Systems with serious violations
Counties
36
With water systems
Population
3,718,715
Served by water systems
Water Systems
931
Total water systems
Violators
18
Systems with serious violations
Searching by your address yields the most accurate results. Searching by town or water system may not show all systems due to how the EPA categorizes data. Some towns may be listed under counties, and water system boundaries don't always align with town boundaries.
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Oregon Counties
Baker
Population: 12,226
Water Systems: 9
Benton
Population: 69,249
Water Systems: 14
Clackamas
Population: 362,806
Water Systems: 85
Clatsop
Population: 39,666
Water Systems: 21
Columbia
Population: 37,720
Water Systems: 35
Coos
Population: 48,437
Water Systems: 24
Crook
Population: 15,001
Water Systems: 18
Curry
Population: 16,688
Water Systems: 12
Deschutes
Population: 186,390
Water Systems: 68
Douglas
Population: 84,197
Water Systems: 33
Gilliam
Population: 1,381
Water Systems: 3
Grant
Population: 4,449
Water Systems: 8
Harney
Population: 4,518
Water Systems: 3
Hood River
Population: 21,858
Water Systems: 6
Jackson
Population: 170,838
Water Systems: 71
Jefferson
Population: 19,925
Water Systems: 4
Josephine
Population: 42,557
Water Systems: 34
Klamath
Population: 48,762
Water Systems: 28
Lake
Population: 3,671
Water Systems: 3
Lane
Population: 299,815
Water Systems: 72
Lincoln
Population: 58,586
Water Systems: 33
Linn
Population: 104,381
Water Systems: 41
Malheur
Population: 20,264
Water Systems: 8
Marion
Population: 332,383
Water Systems: 75
Morrow
Population: 9,185
Water Systems: 8
Multnomah
Population: 845,486
Water Systems: 25
Polk
Population: 50,429
Water Systems: 12
Sherman
Population: 1,264
Water Systems: 4
Tillamook
Population: 27,472
Water Systems: 35
Umatilla
Population: 61,406
Water Systems: 34
Union
Population: 20,084
Water Systems: 10
Wallowa
Population: 4,683
Water Systems: 5
Wasco
Population: 22,166
Water Systems: 21
Washington
Population: 583,854
Water Systems: 28
Wheeler
Population: 747
Water Systems: 3
Yamhill
Population: 86,171
Water Systems: 38