Imagine you have a super picky bouncer at a club, standing in front of a door. Only the tiniest, most innocent molecules—like pure H₂O—get to slide through, while everything else gets the boot. That’s reverse osmosis in a nutshell: it pushes water through a special membrane that acts like that bouncer, blocking almost everything else.
We’re talking about blocking salt, bacteria, viruses, heavy metals, and even some pesticides. Pretty cool, right? But here’s the kicker: it doesn’t just filter water—it pushes it through with pressure, which is why it’s “reverse” (normal osmosis would let the water move the other way).
