This does not increase the salts concentration in the ocean though since most of it precipitates back into the ocean as rain or snow. Some of it is trapped as groundwater at lower depths and some is distributed in soil, lakes, rivers and the atmosphere. This seems like such a small amount for the population on earth but it really is not. The annual precipitation that falls on the land area is more than sufficient to supply the entire earth's population. The problem is that this precipitation is not distributed evenly as anyone in a desert could tell you.
Some areas have an overabundance of fresh waters while others have an insufficient amount.
The other problem is that with the increasing populations, it is becoming more difficult to settle in areas previously not inhabited. Increasing populations also result in a larger demand for the agriculture industry. Eventually economic growth may be limited by a resricted water supply. It has been determined that shipping fresh water to areas in need is uneconomical and is not necessary. Desalination is becoming the solution for areas that are far from a fresh water source, but they are within a reasonable distance from ocean water or brackish ground water.