Public versus private : does it matter for water conservation ? Insights from California - Kallis, Giorgos (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Ray, Isha (University of California (Berkeley). Energy & Resources Group) ; Fulton, Julian (University of California (Berkeley). Energy & Resources Group) ; McMahon, James E. (Lawrence Berkeley National Laboratory. Energy Analysis Department)