Global Warming - the main cause of water scarcity

The Oxford-based monthly Global Water Intelligence (GWI) provides coverage and analysis of the world's water markets. It has strong emphasis on desalination and prides itself on having access to exclusive and little-known industry developments. Q&A session between EXECUTIVE representative and GWI publisher Christopher Gasson took place on the topic about what is in store for H2O's future. During their talk, EXECUTIVE asked to Mr. Gasson "Is It Correct To Assume That Global Warming Will Only Increase Pressure on the World's Fresh Water Resources?" And he replies :

Not necessarily. Global warming has a very complicated effect. Virtually none of the models for global warming give us a consistent view of where precipitation will move. It is predicted that by end of the century there will be 14% more moisture in the atmosphere. And that has to fall somewhere. At the moment, people are interpreting this by saying that we are going to see more intense flood events and more droughts. If that occurs, it is terrible for those government agencies planning for water. On the one hand, they have to spend a bunch of money on flood defenses and on the other hand, they have to spend money to protect against droughts. Therefore, it is worse news than if things were just likely to get drier.

In fact, it is wrong to say global warming is the main cause of water scarcity. The main cause of water scarcity is too many people needing too much water in places with few natural resources.