SodaStream's ad claims that each of its units results in 2,000 fewer plastic bottles being used by the average family in one year. The ad does not specify the specific country used by the source to attain this number, but we've contacted SodaStream asking for clarification and await its response. Meanwhile, SodaStream also worked with The Carbon Trust to measure its carbon footprint throughout the lifecycle of its product. That study showed that SodaStream's footprint was 75% smaller than those of its competitors in the beverage aisle.