Sparkling Watermelon Agua Fresca

"Sparkling Watermelon Agua Fresca is a refreshing sugar-free drink. All you need to make it are 4 ingredients plus ice and a blender! Summer calls for ice cold beverages. Am I right? But many contain a lot of sugar, like lemonade or sweetened iced tea. And while it’s probably okay to have some sugar in moderation, I prefer not to have extra sugar in my beverages, if possible. If you have kids, you probably don’t want them to have too much sugar either. But this Sparkling Watermelon Agua Fresca is delicious, refreshing, and sugar-free!"