First up: the big, scary stuff. Lead. Mercury. Arsenic. Yeah, those heavy metals you hear about in news reports. RO waves a little magic membrane and says, “Nope, not today.” It yanks them out with shocking efficiency.
It also gets rid of fluoride. Which is a whole other conversation—some people love it for teeth, some hate it. RO removes it anyway. It’s an equal-opportunity remover.
And chlorine? That pool-water taste you hate? Gone. RO strips it out like a bad habit. Your water suddenly tastes like… nothing. Which is actually the goal.
Wait, Does It Remove Everything?
Not everything. Don’t panic. It doesn’t remove dissolved gases, like some volatile organic compounds (VOCs) that can sneak through. And it won’t catch tiny bacteria if the membrane has a pinhole. But that’s rare. Usually, it’s a fortress.
It also takes out salt. Yes, salt. If you accidentally drank seawater? RO could save your life. It desalinates. No joke. That’s how powerful this thing is.
And pesticides, herbicides, and pharmaceuticals? Yup. Those tiny drug molecules your neighbors flushed? RO stops them. It’s basically a superhero cape for your faucet.