Colorado Tap Water Quality
Explore tap water quality data for counties across Colorado. View water system reports, track violations, monitor drinking water safety, and check fluoridation status in your community.
Total Counties
86
Communities with public water systems
Total Population
7,060,485
Residents served by public water systems
Water Systems
1,027
Public water systems statewide
Serious Violators
5
Systems with serious violations
Counties
86
With water systems
Population
7,060,485
Served by water systems
Water Systems
1,027
Total water systems
Violators
5
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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Colorado Counties
Adams
Population: 681,491
Water Systems: 57
Alamosa
Population: 12,969
Water Systems: 4
Arapahoe
Population: 811,315
Water Systems: 26
Archuleta
Population: 13,358
Water Systems: 8
Aurora
Population: 873
Water Systems: 2
Baca
Population: 2,504
Water Systems: 6
Bayfield
Population: 200
Water Systems: 1
Bent
Population: 3,061
Water Systems: 4
Berthoud
Population: 157
Water Systems: 1
Boulder
Population: 420,669
Water Systems: 38
Broomfield
Population: 108,783
Water Systems: 3
Canon City
Population: 166
Water Systems: 1
Chaffee
Population: 14,787
Water Systems: 18
Cheyenne
Population: 1,265
Water Systems: 3
Clear Creek
Population: 18,507
Water Systems: 11
Colorado Springs
Population: 4,782
Water Systems: 7
Conejos
Population: 4,465
Water Systems: 8
Cortez
Population: 200
Water Systems: 1
Costilla
Population: 2,378
Water Systems: 8
Crested Butte
Population: 47
Water Systems: 1
Crowley
Population: 2,942
Water Systems: 7
Custer
Population: 2,059
Water Systems: 4
Delta
Population: 25,942
Water Systems: 25
Denver
Population: 1,310,697
Water Systems: 4
Dolores
Population: 1,287
Water Systems: 2
Douglas
Population: 406,780
Water Systems: 26
Eagle
Population: 83,216
Water Systems: 23
El Paso
Population: 736,240
Water Systems: 67
Elbert
Population: 9,311
Water Systems: 15
Evans
Population: 1,025
Water Systems: 1
Fremont
Population: 52,348
Water Systems: 12
Garfield
Population: 50,239
Water Systems: 52
Gilpin
Population: 18,917
Water Systems: 2
Glendale
Population: 4,400
Water Systems: 1
Glenwood Springs
Population: 161
Water Systems: 2
Golden
Population: 1,250
Water Systems: 2
Grand
Population: 30,291
Water Systems: 23
Grand Junction
Population: 67
Water Systems: 1
Gunnison
Population: 20,660
Water Systems: 18
Hesperus
Population: 154
Water Systems: 1
Hinsdale
Population: 654
Water Systems: 2
Huerfano
Population: 5,722
Water Systems: 10
Jackson
Population: 652
Water Systems: 2
Jefferson
Population: 529,239
Water Systems: 44
Kiowa
Population: 884
Water Systems: 4
Kit Carson
Population: 7,491
Water Systems: 6
La Plata
Population: 53,292
Water Systems: 51
Lake
Population: 9,023
Water Systems: 6
Larimer
Population: 480,436
Water Systems: 40
Las Animas
Population: 13,880
Water Systems: 9
Lincoln
Population: 7,725
Water Systems: 6
Littleton
Population: 0
Water Systems: 1
Logan
Population: 16,847
Water Systems: 9
Longmont
Population: 1,319
Water Systems: 2
Loveland
Population: 842
Water Systems: 1
Mesa
Population: 158,174
Water Systems: 21
Mineral
Population: 2,051
Water Systems: 2
Moffat
Population: 10,084
Water Systems: 5
Montezuma
Population: 27,839
Water Systems: 9
Montrose
Population: 56,042
Water Systems: 22
Morgan
Population: 28,893
Water Systems: 8
Otero
Population: 20,209
Water Systems: 23
Ouray
Population: 3,854
Water Systems: 5
Paonia
Population: 390
Water Systems: 6
Parachute
Population: 425
Water Systems: 1
Park
Population: 3,138
Water Systems: 9
Phillips
Population: 3,545
Water Systems: 3
Pitkin
Population: 41,174
Water Systems: 27
Prowers
Population: 12,802
Water Systems: 10
Pueblo
Population: 161,541
Water Systems: 17
Rio Blanco
Population: 5,046
Water Systems: 4
Rio Grande
Population: 7,112
Water Systems: 8
Routt
Population: 36,584
Water Systems: 23
Saguache
Population: 5,988
Water Systems: 6
San Juan
Population: 2,387
Water Systems: 1
San Miguel
Population: 20,954
Water Systems: 12
Sedgwick
Population: 1,711
Water Systems: 3
Silt
Population: 60
Water Systems: 1
Summit
Population: 71,334
Water Systems: 23
Teller
Population: 18,003
Water Systems: 23
Thornton
Population: 5,553
Water Systems: 6
Trinidad
Population: 276
Water Systems: 4
Washington
Population: 2,979
Water Systems: 2
Weld
Population: 357,469
Water Systems: 48
Woodland Park
Population: 100
Water Systems: 1
Yuma
Population: 6,799
Water Systems: 5