Abstract: Groundwater is a valuable resource both in the united state and throughout the world. Where surface water, such as lakes and rivers, are scare or inaccessible. The volume of ground water in storage is decreasing in many areas of the united states in response to pumping. ground water depletion is primarily caused by sustained groundwater pumping. The water shortage problem is the lack of sufficient available water resources to meet water needs within a region. It affects every region and around 2.8 billion people around the world at least one month out of every year. More than 1.2 billion people lack access to clean drinking water.