Let’s be real: for most everyday stuff, like topping off your iron or mixing baby formula, both are fine. Your coffee maker won’t explode if you use deionised water instead of distilled. Your car battery won’t file a complaint. But if you need water that’s sterile (like for contact lenses), stick with distilled.
If you’re a plant parent, you might prefer distilled. Some plants, like carnivorous Venus flytraps, are super sensitive to minerals. Deionised water can work, but it might actually pull minerals out of the soil, causing problems. So for your leafy friends, distilled is the safer, kinder choice.
And for making the world’s best cup of tea? Honestly, just use filtered tap water. Both distilled and deionised can make tea taste like sad, watery regret. Save the ultra-pure stuff for chemistry sets and steam irons!
