As they do today, icebergs near Greenland melted thousands of years ago, and the water produced was of a different temperature and salinity than the surrounding seawater. This difference kept the water separate from the surrounding water as it sank to the ocean floor. It now circles the Earth every several thousand years. The Natural Energy Laboratory of Hawaii Authority (NELHA), at Keahole Point, Hawaii, provides access to this deep seawater through a pipeline reaching 3,000 feet (914 meters) into the ocean. Entrepreneurs have begun bottling the desalinated water, mainly to be sold in the Japanese market.
South Korea, Japan, Taiwan, and China also produce refined deep seawater, which usually involves desalination, followed by a mineralization process. Deep sea water contains many minerals, such as Mg, Ca, Cl, Na, K, Se, and V, and it's more abundant in minerals than surface seawater. Deep seawater is technically processed water but making an exotic source of water with a unique mineral composition accessible makes this processing necessary and, in my opinion, different from processing tap water.
