According to the Flavor and to the bottle size, we offer you a caloric range of Zero, Five and Ten calories Max. According to the Flavor strength that our users demanded for a Real Flavor you an Enjoy, and a healthy beverage, we had to increase some Flavor proportions. While using the most recent FDA guidelines for Nutrition Information in our Water, we had to count 16.9 oz (our biggest bottle) as one single serving. This size, based on the latest, has a maximum of 10 calories for some flavors. This is the max, 10 calories, while, again, profiling a Real Flavor you can Enjoy. Compare this to a 110 to 160 Calories in a fruit juice serving of only 8 Oz for some providers that wanted to give you a similar flavorful experience.