Water Hardness in Colorado

64 counties — Average 191 PPM (Very Hard)

2
1
61
Soft (3.1%) Moderate (0.0%) Hard (1.6%) Very Hard (95.3%)

Colorado Water Hardness Map

Soft   Moderate   Hard   Very Hard

Hardest Water Counties

Adams228 PPM
Alamosa194 PPM
Arapahoe260 PPM
Archuleta194 PPM
Baca194 PPM
Bent194 PPM
Broomfield194 PPM
Chaffee194 PPM
Cheyenne194 PPM
Clear Creek194 PPM
Conejos194 PPM
Costilla194 PPM
+49 more
Colorado

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All 64 Counties — By Water Hardness

CountyClassificationHardness
Adams Very Hard 228 PPM
Alamosa Very Hard 194 PPM
Arapahoe Very Hard 260 PPM
Archuleta Very Hard 194 PPM
Baca Very Hard 194 PPM
Bent Very Hard 194 PPM
Boulder Soft 46 PPM
Broomfield Very Hard 194 PPM
Chaffee Very Hard 194 PPM
Cheyenne Very Hard 194 PPM
Clear Creek Very Hard 194 PPM
Conejos Very Hard 194 PPM
Costilla Very Hard 194 PPM
Crowley Very Hard 194 PPM
Custer Very Hard 194 PPM
Delta Very Hard 194 PPM
Denver Very Hard 258 PPM
Dolores Very Hard 194 PPM
Douglas Very Hard 194 PPM
Eagle Very Hard 194 PPM
El Paso Hard 160 PPM
Elbert Very Hard 194 PPM
Fremont Very Hard 194 PPM
Garfield Very Hard 194 PPM
Gilpin Very Hard 194 PPM
Grand Very Hard 194 PPM
Gunnison Very Hard 194 PPM
Hinsdale Very Hard 194 PPM
Huerfano Very Hard 194 PPM
Jackson Very Hard 194 PPM
Jefferson Very Hard 194 PPM
Kiowa Very Hard 194 PPM
Kit Carson Very Hard 194 PPM
La Plata Very Hard 194 PPM
Lake Very Hard 194 PPM
Larimer Soft 17.1 PPM
Las Animas Very Hard 194 PPM
Lincoln Very Hard 194 PPM
Logan Very Hard 194 PPM
Mesa Very Hard 194 PPM
Mineral Very Hard 194 PPM
Moffat Very Hard 194 PPM
Montezuma Very Hard 194 PPM
Montrose Very Hard 194 PPM
Morgan Very Hard 194 PPM
Otero Very Hard 194 PPM
Ouray Very Hard 194 PPM
Park Very Hard 194 PPM
Phillips Very Hard 194 PPM
Pitkin Very Hard 194 PPM
Prowers Very Hard 194 PPM
Pueblo Very Hard 194 PPM
Rio Blanco Very Hard 194 PPM
Rio Grande Very Hard 194 PPM
Routt Very Hard 194 PPM
Saguache Very Hard 194 PPM
San Juan Very Hard 194 PPM
San Miguel Very Hard 194 PPM
Sedgwick Very Hard 194 PPM
Summit Very Hard 194 PPM
Teller Very Hard 194 PPM
Washington Very Hard 194 PPM
Weld Very Hard 194 PPM
Yuma Very Hard 194 PPM

Source: USGS Water Quality Portal

Frequently Asked Questions

How hard is the water in Colorado?

Colorado has an average water hardness of 191 PPM, classified as very hard. Out of 64 counties, 2 have soft water, 0 moderately hard, 1 hard, and 61 very hard.

Which Colorado counties have the hardest water?

Colorado has 61 counties with very hard water (above 180 mg/L). See the county table above for a complete breakdown by hardness level.

How do I check water hardness for my Colorado address?

Enter your ZIP code in the search box above to see your area's estimated water hardness, classification, and water utility information.