Our planet is 70% water, 97.5% of that is saltwater.
This means only 2.5% is available for the 6 billion people on the planet today.
We get our water from the 30% of freshwater that exists in underground lakes and aquifers - mainly by digging wells. Many communities in developing nations often have a plentiful supply of clean water just below the ground, but no way to get to it. Here's where we, and our partner organizations come in.

The idea of Clean H2O, and the new site www.CleanH2O.org was conceived after more than 15 years of silent giving to clean water (H2O) projects around the world by Nelson Foundation’s founder, M. Nelson.
Keith Nelson, the only sibling of Nelson Foundation founder, Michael E. Nelson, currently resides in Barcelona, Spain, where his lifetime of charitable work continues as a logistics coordinator for the International NGO, Doctors without Borders.   During a visit to Barcelona, Spain, in the early summer of 2008, Michael and Keith had the opportunity to visit a small village in the interior of Spain where EU (European Union) infrastructure improvements and Micro-Finance loans are creating clean and safe drinking water for villages and creating jobs. 
The Nelson Foundation has recently helped another fundraising effort in Barcelona raise needed money for Charity = Water, see this link for more information:  http://www.youtube.com/watch?v=MzjH8ZOoRJA
http://www.amiando.com/twestivalbarcelona.html

Harvesting Ground Water
Often times, even in arid or semi-arid regions, there are days or brief "seasons" when rain does fall. Collecting this water quickly and efficiently is essential to eliminating water scarcity. Construction of small check dams in gullies or dry stream beds can harvest huge quantities of water for use in the non-rainy periods. The issue is not that there is no water to drink, but rather there is no way to capture and use it.
It may seem simple to us, who have the resources we need, but in situations of extreme poverty, even the limited money needed to construct such a dam is rarely available. You can help!

Water scarcity falls into two major categories, they are...
Physical Scarcity
Physical water scarcity is what it sounds like. Physical access to water is limited. When the demand outstrips the lands ability to provide the needed water you have physical scarcity. For the most part, dry parts of the world or arid regions are most often associated with physical scarcity. However, there are an increasing number of regions in the world where physical scarcity is a man-made condition. The Colorado river basin in the United States is an excellent example of a seemingly abundant source of water being overused and over managed, leading to very serious physical water scarcity downstream.

Economic Scarcity
Economic water scarcity is by far the most disturbing form of water scarcity because it is almost entirely a lack of compassion and good governance that allows the condition to persist. Economic water scarcity exists when a population does not have the necessary monetary means to utilize an adequate source of water. Economic water scarcity is about a unequal distribution of resources for many reasons, including political and ethnic conflict. Much of sub-Saharan Africa suffers under the effects of this type of water scarcity.

Without question, economic water scarcity in an issue that can be addressed quickly and effectively. The CleanH2O.org key goal is to provide the means necessary for communities suffering from it to find relief. Access to clean water can be as simple as building small dams to catch rain water, or rain collection systems to collect rain from rooftops. It simply takes some money, a bit of engineering and some local construction efforts.