Montana Water Quality Reports

Comprehensive water quality data for 102 cities across Montana. View EPA-verified contaminant levels and get filter recommendations.

102

Cities

2

Safe

58

Monitor

22

At Risk

1

Limited testing

19

No Test Data

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Montana water quality ranking EPA-certified testing labs Water utilities in Montana

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 81 cities serving 503,802 people across 43 counties.

Common Contaminants in Montana

79 cities in Montana have at least one contaminant above EPA health guidelines.

Dichloroacetic Acid (DCA)(49 cities)Bromodichloromethane(46 cities)Arsenic(35 cities)Gross Alpha (Excl. Radon and Uranium)(29 cities)Uranium(28 cities)Radium, combined (-226 & -228)(14 cities)

Worried about Dichloroacetic Acid (DCA) in your water?

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Cities in Montana

Billings

People Served114K

166 results on file

Above Guidelines3

View Report →

Missoula

People Served68K

175 results on file

Above Guidelines3

View Report →

Great Falls

People Served60K

163 results on file

Above Guidelines3

View Report →

Bozeman

People Served56K

146 results on file

Above Guidelines4

View Report →

Butte

People Served33K

162 results on file

Above Guidelines2

View Report →

Kalispell

People Served25K

23 results on file

Above Guidelines1

View Report →

Belgrade

People Served10K

146 results on file

Above Guidelines2

View Report →

Whitefish

People Served10K

143 results on file

Above Guidelines2

View Report →

West Yellowstone

People Served10K

144 results on file

Above Guidelines2

View Report →

Havre

People Served10K

128 results on file

Above Guidelines2

View Report →

Miles City

People Served10K

128 results on file

Above Guidelines3

View Report →

Anaconda

People Served7K

86 results on file

Above Guidelines2

View Report →

Bigfork

People Served6K

23 contaminants listed, only PFAS results from EPA's UCMR 5 on file

Above Guidelines0

View Report →

Sidney

People Served5K

148 results on file

Above Guidelines4

View Report →

Big Sky

People Served4K

136 results on file

Above Guidelines2

View Report →

Hardin

People Served4K

133 results on file

Above Guidelines2

View Report →

Glasgow

People Served3K

106 results on file

Above Guidelines3

View Report →

Lame Deer

People Served3K

No contaminant results on file

Above Guidelines0

View Report →

Poplar

People Served3K

No contaminant results on file

Above Guidelines0

View Report →

Wolf Point

People Served3K

No contaminant results on file

Above Guidelines0

View Report →

Deer Lodge

People Served3K

110 results on file

Above Guidelines4

View Report →

Deerlodge

People Served3K

110 results on file

Above Guidelines4

View Report →

Lolo

People Served3K

129 results on file

Above Guidelines3

View Report →

Conrad

People Served3K

10 results on file

Above Guidelines2

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Ronan

People Served2K

14 results on file

Above Guidelines4

View Report →

Colstrip

People Served2K

125 results on file

Above Guidelines3

View Report →

Forsyth

People Served2K

114 results on file

Above Guidelines3

View Report →

East Helena

People Served2K

11 results on file

Above Guidelines4

View Report →

Troy

People Served2K

4 results on file

Above Guidelines0

View Report →

Pablo

People Served2K

6 results on file

Above Guidelines1

View Report →

Red Lodge

People Served2K

8 results on file

Above Guidelines3

View Report →

Townsend

People Served2K

5 results on file

Above Guidelines3

View Report →

Eureka

People Served2K

9 results on file

Above Guidelines1

View Report →

Stevensville

People Served2K

11 results on file

Above Guidelines4

View Report →

Thompson Falls

People Served2K

4 results on file

Above Guidelines0

View Report →

Columbus

People Served2K

12 results on file

Above Guidelines4

View Report →

Roundup

People Served2K

15 results on file

Above Guidelines6

View Report →

Three Forks

People Served2K

11 results on file

Above Guidelines4

View Report →

Baker

People Served2K

4 results on file

Above Guidelines1

View Report →

Malta

People Served2K

11 results on file

Above Guidelines3

View Report →

Manhattan

People Served2K

12 results on file

Above Guidelines4

View Report →

Plentywood

People Served2K

11 results on file

Above Guidelines2

View Report →

Choteau

People Served2K

9 results on file

Above Guidelines3

View Report →

Big Timber

People Served2K

10 results on file

Above Guidelines4

View Report →

Seeley Lake

People Served2K

7 results on file

Above Guidelines2

View Report →

Fort Benton

People Served2K

12 results on file

Above Guidelines4

View Report →

Virginia City

People Served2K

10 results on file

Above Guidelines3

View Report →

Boulder

People Served1K

11 results on file

Above Guidelines3

View Report →

Ennis

People Served1K

7 results on file

Above Guidelines3

View Report →

Philipsburg

People Served1K

102 results on file

Above Guidelines4

View Report →

Plains

People Served1K

13 results on file

Above Guidelines3

View Report →

Chinook

People Served1K

107 results on file

Above Guidelines3

View Report →

Crow Agency

People Served1K

No contaminant results on file; open health-based EPA violation on record

Above Guidelines0

View Report →

Black Eagle

People Served1K

66 results on file

Above Guidelines2

View Report →

Lakeside

People Served1K

7 results on file

Above Guidelines2

View Report →

Absarokee

People Served1K

10 results on file

Above Guidelines3

View Report →

Harlowton

People Served1K

6 results on file

Above Guidelines1

View Report →

Scobey

People Served1K

120 results on file

Above Guidelines5

View Report →

Fairview

People Served1K

115 results on file

Above Guidelines3

View Report →

White Sulphur Springs

People Served1K

12 results on file

Above Guidelines3

View Report →

Ballantine

People Served1K

125 results on file

Above Guidelines6

View Report →

Culbertson

People Served1K

114 results on file

Above Guidelines3

View Report →

Gardiner

People Served1K

104 results on file

Above Guidelines4

View Report →

Circle

People Served1K

107 results on file

Above Guidelines1

View Report →

Medicine Lake

People Served1K

14 results on file

Above Guidelines2

View Report →

Lodge Grass

People Served0K

122 results on file

Above Guidelines2

View Report →

Broadus

People Served0K

114 results on file

Above Guidelines1

View Report →

Froid

People Served0K

14 results on file

Above Guidelines2

View Report →

St Marie

People Served0K

15 results on file

Above Guidelines2

View Report →

Ashland

People Served0K

112 results on file

Above Guidelines2

View Report →

Ekalaka

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Bainville

People Served0K

15 results on file

Above Guidelines2

View Report →

Nashua

People Served0K

14 results on file

Above Guidelines2

View Report →

Hysham

People Served0K

110 results on file

Above Guidelines3

View Report →

Hinsdale

People Served0K

107 results on file

Above Guidelines1

View Report →

Fort Peck

People Served0K

104 results on file

Above Guidelines3

View Report →

Huntley

People Served0K

128 results on file

Above Guidelines5

View Report →

Basin

People Served0K

121 results on file

Above Guidelines1

View Report →

Richey

People Served0K

104 results on file

Above Guidelines1

View Report →

Saco

People Served0K

103 results on file

Above Guidelines2

View Report →

Lambert

People Served0K

117 results on file

Above Guidelines2

View Report →

Opheim

People Served0K

113 results on file

Above Guidelines3

View Report →

Ramsay

People Served0K

117 results on file

Above Guidelines5

View Report →

Flaxville

People Served0K

115 results on file

Above Guidelines4

View Report →

Box Elder

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

East Missoula

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Emigrant

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Florence

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Four Corners

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Great Fall

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Harlem

People Served0K

13 results on file

Above Guidelines5

View Report →

Hartland Colony

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Havre North

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

King Arthur Park

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Lincoln

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Malmstrom AFB

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Malmstrom Air Force Base

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Martin City

People Served0K

2 results on file

Above Guidelines1

View Report →

Orchard Homes

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Superior

People Served0K

12 results on file

Above Guidelines2

View Report →

Showing top 100 of 102 cities by population.

Use the search box above to find any city in Montana.

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