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
National symbols of Lithuania his capital. The Iron Wolf Mechanised Infantry Brigade ("motorizuotoji pėstininkų brigada 'Geležinis vilkas"') is now the core unit of the Lithuanian Army. The bear is an ancient symbol of Samogitia, one of the regions of Lithuania, and appears in the coat of arms of Šiauliai district. A moose is shown in the Lazdijai district municipality coat of arms and the aurochs is featured in the Kaunas coat of arms. The national plant is rue ("rūta"). A bride traditionally wears a little crown made of rue, which is a symbol of maidenhood. During the wedding the crown is burned, symbolizing the