Skip to main content
WaterVerge
Alerts Cities States PFAS Tracker Guides News Maps Glossary Methodology

Montana ZIP Code Water Quality

143 ZIP codes with water quality data · State average grade: C+

ZIP Codes
143
Avg Grade
C+
A or B
39%
D or F
50%
Grade Distribution

How Montana ZIP codes scored

12%
27%
10%
20%
31%
A
17
12%
Excellent
B
39
27%
Good
C
15
10%
Fair
D
28
20%
Poor
F
44
31%
Failing
All ZIP Codes

All 143 ZIP codes in Montana

ZIP Code Primary City Grade Score Score Cities
59001 Absarokee
B+
 83.4
1
59003 Ashland
D+
 50
1
59004 Ashland
D+
 50
1
59006 Ballantine
C+
 65.2
2
59011 Big Timber
B+
 81.8
1
59014 Bridger
A-
 87.4
1
59019 Columbus
D
 46
1
59022 Crow Agency
D
 49
1
59029 Fromberg
C
 63.6
1
59030 Gardiner
A
 90.4
1
59034 Hardin
F
 44
1
59036 Harlowton
C+
 68.5
1
59037 Huntley
B+
 83.2
1
59041 Joliet
A-
 85.5
1
59043 Lame Deer
F
 44
1
59044 Laurel
C+
 65.3
1
59047 Livingston
D
 47.2
1
59068 Red Lodge
B
 77.2
1
59072 Roundup
C+
 69.8
1
59088 Ballantine
C+
 65.2
2
59101 Billings
F
 39.6
1
59102 Billings
F
 39.6
1
59104 Billings
F
 39.6
1
59105 Billings
F
 39.6
1
59106 Billings
F
 39.6
1
59107 Billings
F
 39.6
1
59108 Billings
F
 39.6
1
59115 Billings
F
 39.6
1
59116 Billings
F
 39.6
1
59117 Billings
F
 39.6
1
59201 Wolf Point
B
 77.8
1
59215 Circle
A-
 86.9
1
59218 Culbertson
B+
 84.2
1
59221 Fairview
B+
 80.1
1
59230 Glasgow
C+
 65
1
59247 Medicine Lake
B
 79
1
59254 Plentywood
B+
 84.8
1
59255 Poplar
B
 75
1
59263 Scobey
A-
 88.1
1
59270 Sidney
F
 41.2
1
59301 Miles City
C+
 67
1
59313 Baker
D+
 50
1
59323 Colstrip
A-
 85.2
1
59327 Forsyth
A-
 85.2
1
59330 Glendive
D
 46.2
1
59353 Wibaux
D+
 50
1
59401 Great Falls
F
 34.5
1
59403 Vaughn
B+
 82.4
1
59404 Great Falls
F
 34.5
2
59405 Great Falls
F
 34.5
1
59406 Great Falls
F
 34.5
1
59412 Belt
B+
 83.8
1
59414 Black Eagle
B
 75.2
1
59417 Browning
F
 41
1
59421 Cascade
A
 94.3
1
59422 Choteau
B-
 73.9
1
59425 Conrad
D
 45
1
59427 Cut Bank
D
 49
1
59436 Fairfield
B-
 73.3
1
59442 Fort Benton
B+
 81.2
1
59457 Lewistown
D
 49
1
59472 Sand Coulee
C-
 55.6
1
59474 Shelby
D
 47.2
1
59479 Stanford
C-
 57.8
1
59482 Sunburst
B
 79.9
1
59486 Valier
B
 75.4
1
59487 Vaughn
B+
 82.4
1
59501 Havre
F
 42.2
1
59520 Big Sandy
A
 90.4
1
59521 Box Elder
B-
 72.9
1
59522 Chester
D
 47
1
59523 Chinook
B
 77
1
59526 Harlem
D
 47
1
59538 Malta
D
 46
1
59601 Helena
F
 39.1
1
59602 Helena
F
 39.1
1
59623 Helena
F
 39.1
1
59624 Helena
F
 39.1
1
59625 Helena
F
 39.1
1
59626 Helena
F
 39.1
1
59632 Boulder
B+
 81.7
1
59634 Clancy
F
 42
1
59635 East Helena
D+
 50
1
59644 Townsend
B
 79.5
1
59645 White Sulphur Springs
D+
 51
1
59701 Butte
B+
 82.8
1
59702 Butte
B+
 82.8
1
59703 Butte
B+
 82.8
1
59707 Butte
B+
 82.8
1
59711 Butte
B+
 82.8
2
59714 Belgrade
F
 44.5
1
59715 Bozeman
F
 43.4
1
59716 Big Sky
F
 43.5
1
59718 Bozeman
F
 43.4
1
59719 Bozeman
F
 43.4
1
59722 Anaconda
D+
 53.9
2
59725 Dillon
F
 41.2
1
59727 Butte
B+
 82.8
1
59729 Ennis
B+
 83.9
1
59730 Big Sky
F
 43.5
1
59741 Manhattan
D+
 50
1
59748 Butte
B+
 82.8
1
59749 Sheridan
C-
 58.6
1
59750 Butte
B+
 82.8
1
59752 Three Forks
A
 92.3
1
59755 Virginia City
C+
 68.4
1
59756 Anaconda
D+
 53.9
2
59758 West Yellowstone
D
 47.2
1
59759 Whitehall
D+
 52
1
59762 Anaconda
D+
 53.9
1
59801 Missoula
F
 42.6
1
59802 Missoula
F
 42.6
1
59803 Missoula
F
 42.6
1
59804 Lolo
D+
 52
1
59808 Missoula
F
 42.6
1
59812 Missoula
F
 42.6
1
59820 Alberton
A-
 86.6
1
59829 Darby
C
 60.2
1
59840 Hamilton
D+
 53
1
59841 Pinesdale
B
 79.5
1
59845 Hot Springs
A-
 89
1
59847 Lolo
D+
 52
1
59855 Pablo
F
 43
1
59858 Philipsburg
F
 42
1
59859 Plains
B+
 84.8
1
59860 Polson
D+
 51.2
1
59864 Ronan
C-
 56.5
1
59868 Seeley Lake
B+
 82.1
1
59870 Stevensville
B-
 70.9
1
59872 Superior
A
 93.2
1
59873 Thompson Falls
B+
 80.6
1
59901 Kalispell
F
 40.1
1
59904 Kalispell
F
 40.1
1
59911 Bigfork
A-
 87
1
59912 Columbia Falls
D
 45.5
1
59917 Eureka
C-
 56.8
1
59919 Hungry Horse
A-
 88.6
1
59922 Lakeside
B+
 82.9
1
59923 Libby
F
 40
1
59932 Somers
A-
 89.7
1
59935 Troy
B+
 80.5
1
59936 West Glacier
A
 91.1
1
59937 Whitefish
F
 42
1
← All states ZIP directory Montana water overview Montana water alerts →