Here’s the deal: yes, soda water absolutely counts as water. It’s literally just water with carbon dioxide dissolved in it. No magic, no subtraction. Your kidneys don’t care if the water is fancy or flat.
But wait—doesn’t the carbonation mess things up? That’s what I always worried about. Spoiler alert: it doesn’t. Your body breaks down those bubbles into the same H₂O molecules. You drink it, you hydrate. Period.
But what about the “acid” panic?
I know, I know—someone once told you soda water is acidic and will dissolve your bones. That’s a fun mental image, but not reality. Yes, carbonated water is slightly acidic (think pH 4–5), but your stomach acid is way stronger. Like, 100 times stronger.
Your body is a master pH balancer. You’d have to drink gallons of soda water every day for years to even dent your teeth enamel. And even then, it’s less damaging than orange juice. So chill out and enjoy the fizz.