Neither Hollow-Fibre Membrane Filters nor Activated-Charcoal Filters Remove Fluoride from Fluoridated Tap Water

Date
Background and Objective: Previous reports of the reduction of fluoride concentrations in fluoridated water by domestic water treatment systems have indicated that further supplementation with fluoride is required. However, the absorption of fluoride by filters has not yet been directly identified. If these filters do not absorb fluoride, further fluoride supplementation may increase fluorosis. In this study, we determined whether filtering systems absorb fluoride ions.