This report has been several years in themaking, in part because of the challenges ofcollecting data, developing methods andapproaches, and assembling the pieces, and in partbecause of the difficulty of finding funders who trulyunderstand the importance of conservation andefficiency for water policy and planning. Many peopleat the Pacific Institute played a role in preparing thisanalysis and paper. Peter H. Gleick was lead authoroverall. Gary Wolff had principal responsibility forthe economic analysis and Section 5. Amar Mann andVeena Srinivasan performed much of the residentialand commercial, institutional, and industrial (CII)economic analysis, respectively. Dana Haasz workedextensively on all the indoor and outdoor residentialanalyses. Veena Srinivasan and Christine Henges-Jeckhad principal responsibility for the CII analyses inSection 4, though Katherine Kao Cushing also playedan instrumental role in getting the funding for thispart of the work, finding the data, and analyzing it.