A: “Reverse osmosis systems remove fluoride from household drinking water as well as the protective effects that fluoridated water has on oral health. Water softeners use an ion exchange resin that replaces calcium ion within hard water with a sodium ion that results in softer water. So, water softeners do not affect fluoride levels. “
– Angela Kennedy, PE, Former Texas Department of State Health Services, Water Fluoridation Project, Engineer
Home water filtration systems, like Pur or Brita, remove contaminants but do not advertise they remove fluoride or its protective benefits from water.