Montana Water Quality Reports
Comprehensive water quality data for 102 cities across Montana. View EPA-verified contaminant levels and get filter recommendations.
102
Cities
7
Safe
32
Monitor
63
At Risk
Water Quality by County
Explore aggregated water quality scores across Montana counties. Scores are calculated based on EPA data and weighted by population.
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Data from 68 cities serving 834,766 people across 28 counties.
Common Contaminants in Montana
95 cities in Montana have at least one contaminant above EPA health guidelines.
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Upload my testCities in Montana
Billings
People Served135K
Contaminants Tested891
Above Guidelines27
View Report β
Missoula
People Served73K
Contaminants Tested1626
Above Guidelines19
View Report β
Malmstrom AFB
People Served69K
Contaminants Tested201
Above Guidelines6
View Report β
Orchard Homes
People Served68K
Contaminants Tested300
Above Guidelines5
View Report β
East Missoula
People Served68K
Contaminants Tested163
Above Guidelines4
View Report β
Bozeman
People Served64K
Contaminants Tested937
Above Guidelines18
View Report β
Black Eagle
People Served62K
Contaminants Tested372
Above Guidelines9
View Report β
Great Falls
People Served62K
Contaminants Tested712
Above Guidelines11
View Report β
Great Fall
People Served60K
Contaminants Tested165
Above Guidelines4
View Report β
Butte
People Served33K
Contaminants Tested263
Above Guidelines3
View Report β
Whitefish
People Served15K
Contaminants Tested1000
Above Guidelines21
View Report β
Belgrade
People Served12K
Contaminants Tested533
Above Guidelines15
View Report β
Havre
People Served11K
Contaminants Tested485
Above Guidelines9
View Report β
West Yellowstone
People Served10K
Contaminants Tested370
Above Guidelines7
View Report β
Miles City
People Served10K
Contaminants Tested161
Above Guidelines5
View Report β
Malmstrom Air Force Base
People Served9K
Contaminants Tested36
Above Guidelines2
View Report β
Anaconda
People Served9K
Contaminants Tested262
Above Guidelines8
View Report β
Sidney
People Served5K
Contaminants Tested158
Above Guidelines7
View Report β
Big Sky
People Served5K
Contaminants Tested275
Above Guidelines6
View Report β
Box Elder
People Served4K
Contaminants Tested0
Above Guidelines0
View Report β
Culbertson
People Served4K
Contaminants Tested211
Above Guidelines5
View Report β
Hardin
People Served4K
Contaminants Tested277
Above Guidelines2
View Report β
Glasgow
People Served3K
Contaminants Tested257
Above Guidelines5
View Report β
Lame Deer
People Served3K
Contaminants Tested0
Above Guidelines0
View Report β
Lolo
People Served3K
Contaminants Tested397
Above Guidelines4
View Report β
Poplar
People Served3K
Contaminants Tested0
Above Guidelines0
View Report β
Wolf Point
People Served3K
Contaminants Tested0
Above Guidelines0
View Report β
Deer Lodge
People Served3K
Contaminants Tested122
Above Guidelines5
View Report β
Conrad
People Served3K
Contaminants Tested20
Above Guidelines5
View Report β
Ronan
People Served2K
Contaminants Tested20
Above Guidelines9
View Report β
Colstrip
People Served2K
Contaminants Tested140
Above Guidelines4
View Report β
Forsyth
People Served2K
Contaminants Tested139
Above Guidelines3
View Report β
King Arthur Park
People Served2K
Contaminants Tested132
Above Guidelines1
View Report β
East Helena
People Served2K
Contaminants Tested20
Above Guidelines9
View Report β
Deerlodge
People Served2K
Contaminants Tested123
Above Guidelines5
View Report β
Troy
People Served2K
Contaminants Tested20
Above Guidelines0
View Report β
Pablo
People Served2K
Contaminants Tested20
Above Guidelines2
View Report β
Red Lodge
People Served2K
Contaminants Tested20
Above Guidelines8
View Report β
Townsend
People Served2K
Contaminants Tested20
Above Guidelines4
View Report β
Eureka
People Served2K
Contaminants Tested20
Above Guidelines4
View Report β
Stevensville
People Served2K
Contaminants Tested20
Above Guidelines8
View Report β
Thompson Falls
People Served2K
Contaminants Tested20
Above Guidelines0
View Report β
Columbus
People Served2K
Contaminants Tested20
Above Guidelines8
View Report β
Roundup
People Served2K
Contaminants Tested20
Above Guidelines13
View Report β
Three Forks
People Served2K
Contaminants Tested20
Above Guidelines10
View Report β
Baker
People Served2K
Contaminants Tested20
Above Guidelines1
View Report β
Havre North
People Served2K
Contaminants Tested223
Above Guidelines5
View Report β
Malta
People Served2K
Contaminants Tested20
Above Guidelines8
View Report β
Manhattan
People Served2K
Contaminants Tested20
Above Guidelines10
View Report β
Plentywood
People Served2K
Contaminants Tested20
Above Guidelines11
View Report β
Choteau
People Served2K
Contaminants Tested20
Above Guidelines7
View Report β
Big Timber
People Served2K
Contaminants Tested20
Above Guidelines10
View Report β
Seeley Lake
People Served2K
Contaminants Tested20
Above Guidelines5
View Report β
Fort Benton
People Served2K
Contaminants Tested20
Above Guidelines11
View Report β
Virginia City
People Served2K
Contaminants Tested20
Above Guidelines7
View Report β
Boulder
People Served1K
Contaminants Tested20
Above Guidelines8
View Report β
Chinook
People Served1K
Contaminants Tested143
Above Guidelines3
View Report β
Ennis
People Served1K
Contaminants Tested20
Above Guidelines5
View Report β
Philipsburg
People Served1K
Contaminants Tested137
Above Guidelines5
View Report β
Plains
People Served1K
Contaminants Tested20
Above Guidelines7
View Report β
Crow Agency
People Served1K
Contaminants Tested0
Above Guidelines0
View Report β
Ballantine
People Served1K
Contaminants Tested273
Above Guidelines11
View Report β
Lakeside
People Served1K
Contaminants Tested20
Above Guidelines3
View Report β
Absarokee
People Served1K
Contaminants Tested20
Above Guidelines7
View Report β
Ashland
People Served1K
Contaminants Tested285
Above Guidelines7
View Report β
Harlowton
People Served1K
Contaminants Tested20
Above Guidelines5
View Report β
Lincoln
People Served1K
Contaminants Tested33
Above Guidelines5
View Report β
Scobey
People Served1K
Contaminants Tested139
Above Guidelines5
View Report β
Fairview
People Served1K
Contaminants Tested133
Above Guidelines3
View Report β
White Sulphur Springs
People Served1K
Contaminants Tested20
Above Guidelines8
View Report β
Fort Peck
People Served1K
Contaminants Tested158
Above Guidelines6
View Report β
Gardiner
People Served1K
Contaminants Tested385
Above Guidelines13
View Report β
Four Corners
People Served1K
Contaminants Tested147
Above Guidelines3
View Report β
Circle
People Served1K
Contaminants Tested131
Above Guidelines2
View Report β
Medicine Lake
People Served1K
Contaminants Tested22
Above Guidelines3
View Report β
Lodge Grass
People Served0K
Contaminants Tested125
Above Guidelines3
View Report β
Broadus
People Served0K
Contaminants Tested140
Above Guidelines2
View Report β
Froid
People Served0K
Contaminants Tested18
Above Guidelines2
View Report β
St Marie
People Served0K
Contaminants Tested18
Above Guidelines2
View Report β
Bainville
People Served0K
Contaminants Tested23
Above Guidelines2
View Report β
Nashua
People Served0K
Contaminants Tested18
Above Guidelines2
View Report β
Ekalaka
People Served0K
Contaminants Tested131
Above Guidelines2
View Report β
Hysham
People Served0K
Contaminants Tested131
Above Guidelines3
View Report β
Kalispell
People Served0K
Contaminants Tested278
Above Guidelines3
View Report β
Hinsdale
People Served0K
Contaminants Tested124
Above Guidelines1
View Report β
Huntley
People Served0K
Contaminants Tested152
Above Guidelines6
View Report β
Basin
People Served0K
Contaminants Tested141
Above Guidelines1
View Report β
Emigrant
People Served0K
Contaminants Tested137
Above Guidelines1
View Report β
Richey
People Served0K
Contaminants Tested121
Above Guidelines1
View Report β
Saco
People Served0K
Contaminants Tested138
Above Guidelines2
View Report β
Lambert
People Served0K
Contaminants Tested147
Above Guidelines3
View Report β
Yellowtail
People Served0K
Contaminants Tested132
Above Guidelines4
View Report β
Opheim
People Served0K
Contaminants Tested143
Above Guidelines4
View Report β
Ramsay
People Served0K
Contaminants Tested133
Above Guidelines6
View Report β
Bigfork
People Served0K
Contaminants Tested144
Above Guidelines4
View Report β
Flaxville
People Served0K
Contaminants Tested134
Above Guidelines5
View Report β
Terry
People Served0K
Contaminants Tested149
Above Guidelines3
View Report β
Hartland Colony
People Served0K
Contaminants Tested133
Above Guidelines1
View Report β
Florence
People Served0K
Contaminants Tested136
Above Guidelines1
View Report β
Harlem
People Served0K
Contaminants Tested20
Above Guidelines10
View Report β
Showing top 100 of 102 cities by population.
Use the search box above to find any city in Montana.
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