When carbonating water, we took into account how easily each soda maker allowed us to control the fizz levels with buttons, levers, or presses. We visually observed the overall fizz level and bubble size in the sparkling water from each soda maker. Then we tasted the sparkling water from each machine to compare mouthfeel and flavor (we used filtered water, but CO 2 does add carbonic acid to water, which produces a slight tang). In addition, we noted how much space each soda maker took on the counter, as well as any extra design features.
SodaStream has 13 production facilities worldwide. From 2016, SodaStream's principal manufacturing facility is in Idan HaNegev Industrial Park north of Beersheba , Israel. The plant provides employment for around 1,400 workers, many of them Negev Bedouins .  The cornerstone for the plant was laid in 2011, it opened in 2015.    An additional plant, which began operating in 2011 in Ashkelon , produces SodaStream syrups and flavours. Another plant operated in the Alon Tavor industrial zone near the Israeli city of Afula , between 2011 and 2015, but was closed once the Idan HaNegev facility was opened.