Idaho Water Quality

Water hardness and quality data for 24 cities in Idaho, USA.

State average

191mg/L

11.2 gpg

Hardness level

🔴 Very Hard

5 lab-verified

Cities

24

24 with data

Boise

Pop. 235,684

≈ Moderately Hard

60–119 mg/Lreservoir

PFAS: 0 ppt

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Caldwell

Pop. 51,686

120–179 mg/Lgroundwater

PFAS: 0 ppt

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Coeur d'Alene

Pop. 49,122

152.67 mg/Lgroundwater

PFAS: 0 ppt

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Idaho Falls

Pop. 59,184

180+ mg/Lgroundwater

PFAS: 0 ppt

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Lewiston

Pop. 32,544

0–59 mg/Lgroundwater

PFAS: 0 ppt

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Lewiston Orchards

Pop. 31,422

132.5 mg/Lgroundwater

PFAS: 0 ppt

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Meridian

Pop. 90,739

120–179 mg/Lgroundwater

PFAS: 16.6 ppt

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Nampa

Pop. 89,839

120–179 mg/Lgroundwater

PFAS: 0 ppt

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Pocatello

Pop. 54,441

350 mg/Lgroundwater

PFAS: 0 ppt

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Post Falls

Pop. 30,453

120–179 mg/Lgroundwater

PFAS: 0 ppt

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Twin Falls

Pop. 47,468

180+ mg/Lgroundwater

PFAS: 0 ppt

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Ammon

Pop. 14,960

238 mg/Lgroundwater

PFAS: 0 ppt

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Blackfoot

Pop. 11,740

180+ mg/Lgroundwater

PFAS: 0 ppt

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Burley

Pop. 10,436

120–179 mg/Lgroundwater

PFAS: 0 ppt

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Chubbuck

Pop. 14,428

332.1 mg/Lgroundwater

PFAS: 0 ppt

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Conda

Pop. 21,260

120–179 mg/Lreservoir

PFAS: 1.7 ppt

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Eagle

Pop. 23,612

120–179 mg/Lgroundwater

PFAS: 0 ppt

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Garden City

Pop. 11,550

120–179 mg/Lgroundwater

PFAS: 157.2 ppt

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Hayden

Pop. 14,133

120–179 mg/Lgroundwater

PFAS: 0 ppt

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Jerome

Pop. 11,184

180+ mg/Lgroundwater

PFAS: 0 ppt

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Kuna

Pop. 17,226

137.73 mg/Lgroundwater

PFAS: 0 ppt

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Moscow

Pop. 25,060

35.5 mg/Lgroundwater

PFAS: 0 ppt

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Mountain Home

Pop. 13,730

40 mg/Lgroundwater

PFAS: 0 ppt

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Rexburg

Pop. 27,663

180+ mg/Lgroundwater

PFAS: 0 ppt

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