PREFACE

The authors and the University of Arizona’s Water Resources Research Center gratefully acknowledge the financial support of the U.S. Bureau of Reclamation, Phoenix Area Office, and the City of Phoenix. This research would not have been possible without the assistance and expertise of Tom Babcock of the City of Phoenix. Thanks to the City of Tucson Water Department for their assistance and cooperation, and to Aquacraft Engineering, Inc. Thanks also to Kyle Carpenter of the NSF Center for Sustainability of Semi-Arid Hydrology and Riparian Areas (SAHRA) at the University of Arizona for front cover design and graphics assistance.

The results of this study are based on monitoring of household water use and on customer response to a survey. Ratings of customer satisfaction with toilet function are not to be considered an endorsement of any particular toilet manufacturer, toilet model, or flush valve type. These ratings and the results of data logging are not to be used in advertising, or for any other commercial purposes.