Stones In Fresh Drinking Water. Background Stock Image

Fresh water is the only one source of life on our planet Earth. Fresh water is opposite to sea water, covers that part of the available water of the earth in which salts are contained in minimal quantities. Water whose salinity does not exceed 0.1%, even in the form of steam or ice, is called fresh water. Fresh water exists in rivers, streams, underground waters, fresh lakes, and also in clouds. According to various estimates, the share of fresh water in the total water on Earth is 2.5-3%. In the nearest future a lot of people will stay without a water, of will meet a problem of thirst.