Documentary film "Flow," premiering at the Sundance Film Festival this week, condemns water profiteering, calling for a UN resolution to make access to clean drinking water a human right. The film by French-born director Irena Salina blasts Paris-based Suez and Vivendi Environment for commercializing water systems around the world, as well as Nestle, the world's largest bottled water seller, for draining watersheds. Michel Comte reports.