Cheyenne Water Hardness & Quality Report (2026)
Water Hardness
5.1 grains per gallon
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
153.7 mg/L
Est. Daily Cost
$0.23
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Cheyenne, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Cheyenne | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.7 yrs | 8.5 yrs | -21% |
| Washing Machine | 10.4 yrs | 12 yrs | -13% |
| Water Heater | 12.1 yrs | 15 yrs | -19% |
Regional Water Comparison
How Cheyenne compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Cheyenne, Wyoming | 87.5 mg/L | 1.4 ppt | 🟡 Moderately Hard | reservoir |
| Fort Collins, Colorado | 129 mg/L | 4.5 ppt | 🟠 Hard | reservoir |
| Windsor, Colorado | 67.5 mg/L | 2.6 ppt | 🟡 Moderately Hard | reservoir |
| Greeley, Colorado | 149.5 mg/L | 5.2 ppt | 🟠 Hard | reservoir |
| Evans, Colorado | 119 mg/L | 4.2 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Cheyenne compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Cheyenne | 87.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Cheyenne's Water Unique?
Local geology and source profile
Cheyenne, Wyoming, the state capital and Laramie County seat at the junction of Interstates 25 and 80 — the highest state capital in the United States by elevation (6,063 feet) and the hub of southeastern Wyoming — draws its municipal water supply from a blend of Crow Creek and Granite Creek (Laramie Mountains watershed) reservoirs and the Laramie River pipeline via the Cheyenne Board of Public Utilities Water Division, treating mountain stream and reservoir water for the Cheyenne metropolitan area. Water hardness in Cheyenne measures 87.5 mg/L — classified as moderately soft.
Cheyenne's moderately soft supply reflects the Laramie Mountains watershed's crystalline bedrock geology. The Crow Creek and Granite Creek watersheds in the Laramie Mountains drain the Precambrian Sherman Granite (a distinctive Proterozoic rapakivi granite — the light-colored massive granite of the Laramie arch) and the Precambrian Laramie Anorthosite complex. These Precambrian crystalline formations are highly resistant to chemical weathering and contribute minimal dissolved calcium. The Laramie Range snowmelt runoff through granite terrain produces moderately soft natural water at 87.5 mg/L — considerably softer than the very hard groundwater supplies of the Wyoming Permian evaporite terrain used by some Wyoming communities.
With hardness at 87.5 mg/L, Cheyenne residents enjoy moderately soft water with minimal scale challenges. Cheyenne Board of Public Utilities Water Division consistently delivers water meeting all Wyoming DEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from Crow Creek, Granite Creek, and Laramie Mountains reservoirs via the Cheyenne Board of Public Utilities Water Division — the Laramie Mountains Precambrian granite–gneiss complex and Wyoming Great Plains Cretaceous calcareous formations drainage of Laramie County; moderately soft supply at 87.5 mg/L in Laramie County.