The hardness of water refers to the amount of calcium and magnesium and up to six other minerals in the water. These minerals can make cleaning with the water “hard” or difficult because the water does not create suds or lather very well. Hard water will also leave white deposits or scale on dishes.
Water that does not contain very much calcium or magnesium is called “soft” water.
As water travels over or through the ground, it dissolves these naturally occurring minerals. Generally, ground water, or water from wells, tends to have more minerals such as calcium or magnesium, because the water is exposed to the minerals longer. Surface water, or water from reservoirs, tends to be softer because it has less contact with the minerals.
Approximately 75 percent of Cheyenne’s water comes from reservoirs and 25 percent from wells. Cheyenne’s water contains about approximately 35 milligrams of calcium carbonate per 100 milliliters of water or approximately 2 grains of hardness. Water containing less than 75 milligrams per 100 milliliters, or about 4.5 grains, is classified as “soft.”

City of Cheyenne Board of Public Utilities (BOPU) crews are transferring approximately 2 million gallons of water per day to Sloans Lake.

While filling the lake, flowing water and fluctuating water levels may impact the ice in Old North Crow Diversion Dam, Sloans Lake, Lake Absarracca and Kiwanis Lake.

Ice over flowing water can be dangerous and regularly has thin sections. If accessing the ice, frequently check ice depth.

To fill the lake, engineering and source of supply crews from the City’s water department will use Cheyenne’s raw water system to move water from North Crow Creek at the Old North Crow Diversion Dam to Lake Absarracca, then to Kiwanis Lake and ultimately to Sloans lake. Crews estimate that it will take approximately one month to fill the lake.
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Once in the sewer pipes or drains, the grease, oil and fat coat the inside of pipes, cool, and congeal. The congealed mass then blocks the pipe. Find out more ...

Get the latetst information on the $3.7 million Carey/Pioneer Avenues Rehabilitation Project. [Additional info...]

If you find large tree debris in the street, public sidewalk, alley, or broken limbs still in a tree, please call City forestry at (307)637-6428, during business hours Monday - Friday, 6:30 AM to 3:00 PM. After hours and on weekends call (911).