Our tap water has a very good quality and is in itself quite tasty. The SodaStream brings with individually metered shot of carbon dioxide nor the refreshing pep into it. The two bottles are supplied from seemingly solid glass, closed with a plastic closure. In a bottle, however, a part of the upper edge is broken out after a short time. No longer be used as a bottle by the bed because of the risk of injury. Closes nevertheless reliable. A cartridge holds in our 2-person household about 1 1/2-months (although we drink our water often very quiet).
