Distilled water is boiled. Deionized water is zapped with magnets. Both are super clean, but they get there by very different paths. Think of distillation as a slow, careful trip on a train, and deionization as a high-speed chase in a sports car. Both arrive at the station labeled “Pure,” but one took its time and the other was a little intense.
The next time you’re standing in that grocery aisle, just remember: if you need water that won’t leave residue and you want the simple, foolproof option, grab the distilled. If you need the ultimate, science-lab-level purity and you don’t mind a little bit of water sass, go deionized. And if you’re just thirsty, tap water is fine. Your kettle won’t judge you.
So relax. Water is water. Unless it’s the really picky kind. And now you know exactly why.
