Let’s talk about what won’t work, because I’ve seen way too many blog posts claiming a charcoal stick does the job. It doesn’t. Activated carbon filters are fantastic for chlorine, bad tastes, and some pesticides—but fluoride is too small for carbon to grab.
How to Remove Fluoride from Water: 4 Effective Methods
Then there’s the wild world of “water ionizers”. Some brands claim their machines “filter out fluoride.” Most don’t, unless they have a specific fluoride removal cartridge inside. Read the fine print, friends. Your wallet will thank you.