First up: oxygen and carbon dioxide. Your RO membrane is a total champ at blocking salts and heavy metals, but it’s a terrible bouncer when it comes to gases. Tiny gas molecules just waltz right through the membrane pores.
That means your filtered water is still full of dissolved oxygen. Why does that matter? Because that oxygen gives water a crisp, fresh taste—the kind that makes you say, “Ahhh.” Without it, water would taste flat and dead, like you’re sipping from a plastic bottle left in a hot car.
So thank your RO system for removing the junk, but thank Mother Nature for letting the fizz stick around. It’s the unsung hero of a refreshing glass of water.
