The report discusses the results of a study of defluoridation of drinking water in small communities using either central or point-of-use treatment. The ten sites used for project data collection had natural fluoride in their groundwater supplies in excess of the Maximum Contaminant Levels established in the National Interim Primary Drinking Water Regulations. Treatment methods used were exchange/adsorption with activated alumina, or reverse osmosis. Treatment efficacy summaries are presented for each site. Summaries of bacteriological sampling from point-of-use devices are presented. Capital and operating or maintenance costs are documented and discussed.