Iceland Spring's natural source is located in a protected area in a nature reserve called "Heiðmörk" near Reykjavik. In order to prevent unauthorized entry the spring water sources are fenced off in a 1.5 million square meter security zone. Reykjavik Water Works, which has been operating in this area since the early twentieth century to secure supplies of cold water to Reykjavik City, is responsible for all quality measures and control of the area.
Reykjavik Water Works became one of the first water utilities in the world to receive ISO 9001 food grade quality certification in 1995.
The Iceland Spring water is produced by rain and snow converted into ice thousands of years ago when no human pollution existed, thus making Iceland Spring one of the best bottled waters.