Do a little math and you’ll see that in normal use, a bottle full of carbonated water runs you 49 cents. Aerflo says that’s about 50 percent less than buying commercially available seltzer.

For fans of Topo Chico Mineral Water, Topo Chico Hard Seltzer has now introduced its alcoholic beverage in iconic, 12-oz glass bottles. Available throughout select markets throughout the United ...