The most common packaging material for single-serve, non-carbonated bottled water in the United States and Europe is polyethylene terephthalate (PET) plastic. Marked in many countries with resin identification code number “1,” PET is 100% recyclable, though recycling rates vary by region. In 2014, approximately 1.8 billion pounds of post-consumer PET bottles were collected in the United States and 1.75 million metric tons (approximately 3.9 billion pounds) were collected in the European Union, making it the most recycled plastic in both the United States and Europe. In the United States, the recycling rate for PET packaging was 32% in 2014; in the European Union, the recycling rate for PET packaging for the same period was approximately 52%.