[header] How to filter fluoride from water [title] Purchase and install the filtration system. [step] Ro filters are large filtration systems that will need to be installed beneath your sink. While you can have a professional install the filter, they're relatively easy to install over the course of an afternoon. 
You'll need to assemble the filter mechanisms, and hook the system's hoses up to your tap beneath your kitchen sink. Many filtration systems also come with a small faucet that you'll need to install, typically by removing the side sprayer.