There are four different ways to remove fluoride from tap water: activated alumina filters, distillation, reverse osmosis, and anion exchange. No treatment method will remove all of the fluoride. Consult with the manufacturers on the amount of fluoride their products can remove.
The most effective whole house filtration method for removing fluoride is reverse osmosis which has up to 80-90% efficiency. Water distillation systems remove up to 100% of fluoride, and bottled water does not generally contain fluoride.
The following products or procedures will NOT remove fluoride:
- Activated carbon filters
- Water softeners
- Boiling water - concentrates fluoride rather than reduces it.
- Refrigerating or freezing water - has no effect on the concentration of fluoride in the water