If you’re ready to commit to pure water like a serious relationship, meet reverse osmosis (RO). This is the system restaurants and fancy coffee shops use. It pushes water through a very tight membrane that blocks almost everything, including fluoride.
You can get a small under-sink RO unit for around $150–$200. It takes a little DIY spirit to install, but a plumber friend can do it in an hour. The upside? You get water that’s practically pristine for drinking, cooking, and even watering your picky houseplants.
The downside is that it wastes a bit of water (about 3–4 gallons for every gallon you get), so it’s not the most eco-friendly choice for everyone. But if you live in an area with high fluoride or other contaminants, it’s a total game-changer.
