Water gallon is a large-sized drinking water bottle and generally the largest has a capacity of 19 liters. Water gallons have different types of sizes ranging from a capacity of 2 liters to 19 liters. Water gallons are widely used by drinking water companies as bottled drinking water that can be consumed directly by consumers. Judging from its function, a gallon of water must be made of selected materials that are in accordance with the standard of drinking water packaging that has been determined by BPOM. A good gallon water packaging material that is made from materials recommended by BPOM is made of Polyethylene Tereftalat / PET material is a thermoplast plastic polymer resin from a group of polyester.