What is the recommended concentration of fluoride in community water supplies?

The recommended concentration of fluoride in community water supplies is set at 0.7 parts per million (ppm). This level has been established based on extensive research that indicates it is effective in preventing dental caries (cavities) while minimizing the risk of dental fluorosis, a condition that can occur from excessive fluoride exposure during early childhood. This concentration strikes a balance, ensuring that the maximum benefits of fluoride in enhancing enamel remineralization and reducing decay occur without increasing the likelihood of adverse effects.

Community water fluoridation at this level supports public health initiatives aimed at improving oral health, especially for populations that may not have regular access to dental care. Other concentrations listed, such as 0.5 ppm, 1.0 ppm, and 2.0 ppm, do not provide the same level of effectiveness or safety as 0.7 ppm, hence they are not the recommended standard.