Idaho Water Quality Reports

Comprehensive water quality data for 110 cities across Idaho. View EPA-verified contaminant levels and get filter recommendations.

110

Cities

3

Safe

76

Monitor

11

At Risk

8

Limited testing

12

No Test Data

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

Water Quality by County

Explore aggregated water quality scores across Idaho counties. Scores are calculated based on EPA data and weighted by population.

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Data from 90 cities serving 1,107,832 people across 32 counties.

Common Contaminants in Idaho

83 cities in Idaho have at least one contaminant above EPA health guidelines.

Uranium(50 cities)Gross Alpha (Excl. Radon and Uranium)(49 cities)Arsenic(41 cities)Radium, combined (-226 & -228)(38 cities)Gross Alpha Activity(10 cities)Bromodichloromethane(8 cities)

Worried about Uranium in your water?

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Cities in Idaho

Avimor

People Served250K

157 results on file

Above Guidelines3

View Report →

Boise

People Served250K

157 results on file

Above Guidelines3

View Report →

Hidden Springs

People Served250K

157 results on file

Above Guidelines3

View Report →

Meridian

People Served133K

161 results on file

Above Guidelines3

View Report →

Nampa

People Served100K

128 results on file

Above Guidelines3

View Report →

Caldwell

People Served65K

118 results on file

Above Guidelines3

View Report →

Idaho Falls

People Served63K

147 results on file

Above Guidelines3

View Report →

Pocatello

People Served57K

140 results on file

Above Guidelines5

View Report →

Coeur D Alene

People Served54K

147 results on file

Above Guidelines3

View Report →

Dalton Gardens

People Served54K

147 results on file

Above Guidelines3

View Report →

Fernan Lake Village

People Served54K

147 results on file

Above Guidelines3

View Report →

Hayden

People Served54K

147 results on file

Above Guidelines3

View Report →

Huetter

People Served54K

147 results on file

Above Guidelines3

View Report →

Twin Falls

People Served50K

162 results on file

Above Guidelines3

View Report →

Rexburg

People Served41K

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

Above Guidelines0

View Report →

Kuna

People Served32K

103 results on file

Above Guidelines3

View Report →

Moscow

People Served26K

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

Above Guidelines0

View Report →

Lincoln

People Served20K

107 results on file

Above Guidelines3

View Report →

Post Falls

People Served17K

141 results on file

Above Guidelines2

View Report →

Ammon

People Served17K

101 results on file

Above Guidelines4

View Report →

Chubbuck

People Served16K

138 results on file

Above Guidelines5

View Report →

Lewiston

People Served15K

140 results on file

Above Guidelines5

View Report →

Mountain Home

People Served14K

102 results on file

Above Guidelines4

View Report →

Star

People Served14K

103 results on file

Above Guidelines1

View Report →

Garden City

People Served13K

109 results on file

Above Guidelines3

View Report →

Blackfoot

People Served12K

135 results on file

Above Guidelines3

View Report →

Jerome

People Served12K

106 results on file

Above Guidelines3

View Report →

Kootenai

People Served11K

117 results on file

Above Guidelines2

View Report →

Ponderay

People Served11K

117 results on file

Above Guidelines2

View Report →

Sandpoint

People Served11K

117 results on file

Above Guidelines2

View Report →

Hauser

People Served11K

95 results on file

Above Guidelines3

View Report →

Burley

People Served10K

105 results on file

Above Guidelines2

View Report →

Hayden Lake

People Served9K

102 results on file

Above Guidelines3

View Report →

Middleton

People Served9K

103 results on file

Above Guidelines0

View Report →

Rathdrum

People Served8K

126 results on file

Above Guidelines2

View Report →

Hailey

People Served8K

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

Above Guidelines0

View Report →

Fruitland

People Served7K

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

Above Guidelines0

View Report →

Rupert

People Served6K

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

Above Guidelines0

View Report →

Preston

People Served6K

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

Above Guidelines0

View Report →

Eagle

People Served5K

93 results on file

Above Guidelines3

View Report →

American Falls

People Served5K

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

Above Guidelines0

View Report →

Kimberley

People Served4K

108 results on file

Above Guidelines5

View Report →

Kimberly

People Served4K

108 results on file

Above Guidelines5

View Report →

Buhl

People Served4K

138 results on file

Above Guidelines3

View Report →

Gooding

People Served4K

142 results on file

Above Guidelines4

View Report →

Ketchum

People Served4K

139 results on file

Above Guidelines1

View Report →

Sun Valley

People Served3K

139 results on file

Above Guidelines2

View Report →

Bonners Ferry

People Served3K

80 results on file

Above Guidelines2

View Report →

Salmon

People Served3K

6 results on file

Above Guidelines0

View Report →

Grangeville

People Served3K

97 results on file

Above Guidelines1

View Report →

Heyburn

People Served3K

137 results on file

Above Guidelines2

View Report →

Wendell

People Served3K

79 results on file

Above Guidelines2

View Report →

Soda Springs

People Served3K

96 results on file

Above Guidelines3

View Report →

Filer

People Served3K

115 results on file

Above Guidelines3

View Report →

Fort Hall

People Served3K

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

Above Guidelines0

View Report →

Bellevue

People Served3K

6 results on file

Above Guidelines2

View Report →

Spirit Lake

People Served3K

7 results on file

Above Guidelines2

View Report →

Homedale

People Served3K

77 results on file

Above Guidelines1

View Report →

Montpelier

People Served3K

8 results on file

Above Guidelines3

View Report →

Orofino

People Served2K

6 results on file

Above Guidelines1

View Report →

Wallace

People Served2K

4 results on file

Above Guidelines1

View Report →

Malad

People Served2K

10 results on file

Above Guidelines4

View Report →

Priest River

People Served2K

No contaminant results on file

Above Guidelines0

View Report →

Parma

People Served2K

78 results on file

Above Guidelines1

View Report →

Victor

People Served2K

8 results on file

Above Guidelines2

View Report →

Aberdeen

People Served2K

7 results on file

Above Guidelines3

View Report →

Pinehurst

People Served2K

No contaminant results on file

Above Guidelines0

View Report →

New Plymouth

People Served2K

7 results on file

Above Guidelines4

View Report →

Wilder

People Served2K

79 results on file

Above Guidelines1

View Report →

Shoshone

People Served1K

108 results on file

Above Guidelines1

View Report →

Driggs

People Served1K

4 results on file

Above Guidelines2

View Report →

Marsing

People Served1K

78 results on file

Above Guidelines3

View Report →

Hansen

People Served1K

70 results on file

Above Guidelines3

View Report →

Paul

People Served1K

124 results on file

Above Guidelines1

View Report →

Bayview

People Served1K

5 results on file

Above Guidelines2

View Report →

Ucon

People Served1K

3 results on file

Above Guidelines0

View Report →

Lapwai

People Served1K

75 results on file

Above Guidelines0

View Report →

Ashton

People Served1K

8 results on file

Above Guidelines2

View Report →

Arco

People Served1K

6 results on file

Above Guidelines2

View Report →

Genesee

People Served1K

99 results on file

Above Guidelines2

View Report →

Plummer

People Served1K

8 results on file

Above Guidelines2

View Report →

Blanchard

People Served1K

20 contaminants listed, record not matched to an EPA water system

Above Guidelines0

View Report →

Hagerman

People Served1K

67 results on file

Above Guidelines3

View Report →

Cottonwood

People Served1K

89 results on file

Above Guidelines1

View Report →

Grace

People Served1K

78 results on file

Above Guidelines3

View Report →

Challis

People Served1K

10 results on file

Above Guidelines2

View Report →

Greenleaf

People Served1K

82 results on file

Above Guidelines1

View Report →

Moyie Springs

People Served1K

38 results on file

Above Guidelines0

View Report →

Kooskia

People Served1K

72 results on file

Above Guidelines1

View Report →

Dover

People Served1K

13 results on file

Above Guidelines0

View Report →

Mackay

People Served1K

45 results on file

Above Guidelines1

View Report →

Bliss

People Served0K

36 results on file

Above Guidelines2

View Report →

Moreland

People Served0K

37 results on file

Above Guidelines1

View Report →

Bancroft

People Served0K

72 results on file

Above Guidelines3

View Report →

Stites

People Served0K

74 results on file

Above Guidelines2

View Report →

Bennington

People Served0K

72 results on file

Above Guidelines1

View Report →

Hollister

People Served0K

74 results on file

Above Guidelines3

View Report →

White Bird

People Served0K

72 results on file

Above Guidelines1

View Report →

Clearwater

People Served0K

63 results on file

Above Guidelines3

View Report →

Arbon Valley

People Served0K

No contaminant results on file

Above Guidelines0

View Report →

Showing top 100 of 110 cities by population.

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

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