Published April 11, 2019 19:03 Are your carbonating bottles recyclable? Yes they are! Our bottles are made of PET Type 1 plastic, which is easily recycled. Related articles Where can I recycle my CO2 cylinders if I no longer can use them? What items are compatible with my sparkling water maker? If I want to carbonate my water and store it for later, how long can I expect it to store before going flat? Does the glass carafe contain any lead? What's the difference between exchange vs back up carbonating cylinders?