Liquid Death is just as hydrating as any other water. The still version is mountain water in a can, and the sparkling version is carbonated mountain water. Neither contains anything that would reduce your body’s ability to absorb and use the fluid. The edgy branding is purely marketing; the product itself is straightforward water.
Sparkling vs. Still: Both Hydrate Equally
The most common version of this question comes from people drinking Liquid Death’s sparkling water and wondering if the carbonation changes anything. It doesn’t, in any meaningful way. Dr. Colleen Muñoz, director of the Hydration Health Center at the University of Hartford, has noted that sparkling water “can contribute beautifully” to total daily fluid intake. The carbon dioxide that creates the bubbles doesn’t interfere with water absorption in your gut.
If anything, sparkling water can help people who struggle to drink enough plain water throughout the day. The fizz and flavor make it easier to reach for another can instead of a soda. From a hydration standpoint, a can of Liquid Death sparkling water counts the same as a glass of tap water.
What About the Flavored Versions?
Liquid Death sells flavored sparkling waters with 10 calories, 2 grams of sugar, and no artificial sweeteners per can. These numbers are low enough that they won’t meaningfully affect hydration one way or the other. For comparison, a regular soda has around 39 grams of sugar per 12 ounces. At 2 grams, you’re getting a hint of flavor without the sugar load that can slow gastric emptying and make you feel sluggish.
The company also makes an iced tea line with a bit more substance: 20 calories, 4 grams of sugar, and a boost of caffeine per can. Caffeine is a mild diuretic, meaning it makes you urinate slightly more, but at moderate amounts the water in the beverage more than compensates for any fluid lost. You’d need to consume large amounts of caffeine (well beyond what’s in a single iced tea) before the diuretic effect started to meaningfully offset hydration. The iced tea line contains about 75% less sugar than leading non-diet iced teas, which typically pack 17 to 44 grams per 12 ounces.
Mineral Content and Water Retention
One factor that actually works in favor of some bottled waters, including mineral-rich options, is electrolyte content. Minerals like sodium, potassium, and magnesium help your body retain the water you drink rather than simply passing it through. As Dr. Muñoz has explained, without enough minerals throughout the day, “whatever plain water we drink, we’ll just pee out.” Liquid Death sources its water from limestone-filtered mountain springs, which naturally contain trace minerals. It’s not an electrolyte drink, but it’s not stripped-down distilled water either.
The Carbonation and pH Question
Carbonated water is more acidic than still water because dissolved carbon dioxide forms a weak acid. Lab testing of Liquid Death’s sparkling water found a pH of 5.23, compared to the average bottled water pH of around 7. This sometimes raises concerns, but acidity at this level has no effect on hydration. Your stomach acid is far more acidic (around pH 1.5 to 3.5), and your body tightly regulates blood pH regardless of what you drink.
The only practical consideration with the lower pH is dental health. Mildly acidic beverages can soften tooth enamel over time if you’re sipping constantly throughout the day. This applies to all sparkling water, not just Liquid Death. Drinking it with meals or in reasonable sessions rather than nursing a single can for hours minimizes any concern.
Does the Aluminum Can Matter?
Liquid Death’s tall aluminum cans are a big part of the brand’s identity, and they do have one minor practical effect on hydration: temperature. Aluminum conducts heat very efficiently, so the cans get cold faster in a fridge or cooler than plastic bottles do. They also warm up faster once you’re holding them. Cold water tends to feel more refreshing, which can encourage you to drink more, but the difference is small. The can itself has no effect on the water’s composition or how your body processes it.
How It Compares to Other Water Options
There’s no hydration advantage or disadvantage to choosing Liquid Death over tap water, filtered water, or another brand of bottled water. The still water hydrates identically to what comes out of your faucet. The sparkling water hydrates identically to other sparkling waters. The flavored and tea products hydrate about as well as any low-sugar beverage.
Where Liquid Death does differ from many competitors is in what it replaces. The brand explicitly markets itself as an alternative to soda, energy drinks, and alcohol. If reaching for a tallboy can of water instead of a beer or a Coke means you’re drinking more water throughout the day, the net hydration benefit is real, even if the water itself is nothing special.