CHEYENNE – The amount of fluoride in Cheyenne’s drinking water has declined from an average of 0.7 milligrams per liter to 0.5 mg/L, according to the Board of Public Utilities.
Fluoride in Cheyenne’s drinking water comes from two sources. The first is natural minerals found in Cheyenne’s surface water and groundwater resources. The second is supplemental fluoride added at the Sherard Water Treatment Plant by BOPU.
Cheyenne’s drinking water normally contains around 0.7 mg/L of fluoride, which is the amount of fluoride recommended by the U.S. Department of Health and Human Services to prevent tooth decay and promote dental health. The fluoride concentrations are lower (between 0.4 mg/L and 0.6 mg/L) because BOPU’s supplier of supplemental fluoride is unable to procure the raw minerals necessary to produce the fluoride it uses.
Currently, Cheyenne’s water only contains the natural fluoride found in surface water and groundwater.
This smaller amount of fluoride does not pose a health risk for Cheyenne’s water users, and the city’s water continues to be safe, according to BOPU.
“Fluoride is in the water to promote dental health. With a smaller amount of fluoride, there is less protection against tooth decay. We are notifying our customers so they can make informed decisions about their dental health,” Brad Brooks, BOPU director, said in the release.
Cheyenne dentists also have been notified of the change in fluoride levels. Customers concerned about the decrease in fluoride should consult their dental care provider and maintain recommended dental hygiene practices.