There are many kinds of water capacity, the most common ones are 18.9 liters and 19 liters. Among them, 18.9 liters of bottled water is produced and sold according to the specifications set by the United States, and 19 liters of bottled water is produced and sold according to the specifications set by Chinese national standards.

The capacity of bottled water is generally used for commercial and domestic purposes, such as drinking, cooking and cleaning. With the enhancement of people's awareness of healthy drinking water in recent years, bottled water has gradually become an indispensable part of people's lives, especially in some areas with poor tap water quality.