Filtered water is like giving your tap water a nice spring cleaning. It runs through a filter (like a Brita pitcher or a fridge filter) that catches big stuff—like chlorine, dirt, and weird tastes. It’s like using a colander to drain pasta; the water stays, but the nasty bits get trapped.
You drink it, and it tastes cleaner. It’s fresher. But here’s the thing: it still has minerals like calcium and magnesium. That’s a good thing—it’s what gives water that "natural" feel.