Water from the tap contains less fluoride than it normally does.
Cheyenne’s water normally contains approximately 0.7 milligrams per liter (mg/L) of fluoride. It is the amount recommended by U.S. Department of Health and Human Services to prevent tooth decay and promote dental health. Cheyenne’s drinking water currently contains between 0.3 mg/L and 0.4 mg/L.
The lower amount of fluoride does not pose a health risk for Cheyenne’s water users and Cheyenne’s water continues to be safe.
“The fluoride is in the water to promote dental health. Less fluoride means the water provides less protection to prevent tooth decay. We felt notifying our customers of the change allows customers to make informed decisions about their dental health,” said Craig Kisse, water treatment manager for the City of Cheyenne Board of Public Utilities.
The fluoride concentrations are lower because the BOPU is unable to supplement fluoride into the water. The BOPU’s supplier ran out of fluoride that meets BOPU specifications and is compatible with water treatment plant equipment. Instead of using a lower-grade fluoride, the BOPU is searching for another supplier that can meet specifications.
Even though the BOPU is currently unable to supplement fluoride into the water, Cheyenne’s water sources naturally contain some fluoride. Fluoride is commonly found in minerals and soils. As water travels over the surface of the land or through the ground it dissolves these naturally occurring minerals. Water from Cheyenne’s surface and ground water resources naturally provide approximately 0.3 to 0.4 milligrams per liter of fluoride.
Customers concerned about the decrease in fluoride should consult with their dental care provider and maintain recommended dental hygiene practices.