If you don’t want the full RO system or a distiller, look for filters that contain activated alumina or bone char carbon. These materials are designed to chemically adsorb fluoride. They’re sold as countertop units or under-sink cartridges. The catch? You have to replace the cartridges more often, and they don’t remove everything else like RO does.
It’s a solid middle ground—better than nothing, cheaper than a whole-house system. Just remember: “better than nothing” is not the same as “fluoride-free.” Test your water afterward if you’re a data nerd like Sarah.
