If you want the quickest, laziest, most effective solution: buy a countertop reverse osmosis filter. It’s around $100–$200, lasts for years, and you’ll never have to think about fluoride again. Just fill, drink, and smile.
If you’re on a tight budget, get a bone char filter (also called a “carbon block with bone char”). It’s like a secret weapon for your wallet.
And if you’re feeling fancy, get a distiller and pretend you’re a cloud. Your call.