This would represent a water use saving of about 5.2% in total household indoor water consumption. For instance, in Atlanta, messages such as “We need to start looking at the glass as half empty,” and “Don’t wait until the tap runs dry” are spread in a video public service announcement. Beside rebates for two types of water-efficient purchases, the Metropolitan Water District of Southern California also proposes a webpage (www.bewaterwise.com) with water saving tips, information on public education program designed to educate Californians on the state’s water challenges or technical information (with visual support) on the water reserve levels. These impacts differ depending on the water source (groundwater or surface water). However, if managed in a sustainable way, groundwater extraction can continue to aid regional economic development, in particular in many arid or semi-arid parts of the world. In Italy, for example, the latter has taken place due to excessive abstraction (Massarutto, 1999).