Lithuania determined by the fact that drinking water comes from deep layers that are protected from pollution on the surface of the earth. Drilling depth usually reaches 30–50 meters, but in Klaipėda Region it even reaches 250 meters. Consequently, Lithuania is one of very few European countries where groundwater is used for centralized water supply. With a large underground fresh water reserves, Lithuania exports mineral-rich water to other countries. Approved mineral water quantity is about 2.7 million cubic meters per year, while production is only 4–5 percent of all mineral water resources. Vilnius is the only Baltic capital that uses centralized
Lithuania Minor of Lithuanian Province. The data from the lists of colonists, which shown their descent, was published by G. Geking, G. Schmoler, A. Skalveit in their researches. The ethnic Lithuanian inhabitants of Lithuania Minor called themselves Lietuvininkai (other form Lietuvninkai). L. Baczko wrote around the end of the 18th century: The historical sources indicate that Lietuvininkai is one of two historical ways to call all Lithuanians. Lietuvninkai ("Литовники") are mentioned in the recording (1341) of the second chronicle of Pskov. In what had been the Grand Duchy of Lithuania, the word "lietuvis" became more popular, while in Lithuania Minor "lietuvininkas" was