The melt water of the glaciers of the Main Caucasian Ridge has been passing through a natural filter for centuries, through the mountain layer, enriched with useful trace elements (such as Mg, Ca, Na), and comes to the surface at the foot of Mount Tbau. It is from here that tanker trucks for bottling to the Bavaria plant transport it. It is known that water, which is enriched with calcium, is useful for strengthening bones. Magnesium is necessary for the normal functioning of the cardiovascular and nervous systems. It is important that the spring water «TBAU» contains a minimum amount of sodium. The Water Resources Center analyzed this water for three years and presented the conclusion that it is stable. It means that the product remains unchanged regardless of external circumstances.