What is sparkling water? 
First things first: What exactly is sparkling water? Essentially, it’s water with added carbonation. 
“Sparkling water” has become an umbrella term for most any fizzy water. Sparkling water could be carbonated tap water, carbonated well water or, if you’re drinking Mountain Valley Sparkling Water, carbonated spring water sourced directly from our protected, all-natural spring in the verdant heart of Arkansas’s Ouachita Mountains.