ISKLD is sourced in a pristine area south of Åbenrå Fjord. The water is typical for the region. The water is crystal clear. It has a refreshing taste with a slightly sweet aftertaste, it is alkalic, and has a high oxygen content.

Due to its high content of calcium and magnesium, the water has a pleasant, milky mouthfeel.

The source is artesian. It has been known for its taste and drinkability since 1561 when Duke Hans the Elder of Schleswig-Holstein appropriated it after tasting it at a local inn.

The landscape in Southeast Jutland is dominated by moraine hills, partly covered by pristine woodlands of beach and oak.

The hills were formed when the glaciers retreated at the end of the last ice-age, 10.000 years ago. They are made of interlaced sediments of quartz-sand, clay, and soil. Water sieves through the soil and sand and is trapped between layers of clay, thus forming the basis for artesian sources.

The geological conditions for artesian wells are only found in a few places in Denmark and the producer is fortunate to be able to tap into one of them.