The leading organization of water management professionals in the United States, the American Water Works Association (AWWA) empaneled a committee of 23 experts to compile authoritative definitions and develop this dictionary. This special Technical Advisory Committee (TAC) has worked since 1994 creating this unequaled reference. James M. Symons, Cullen Distinguished Professor Emeritus of Civil Engineering at the University of Houston, served as Project Supervisor and Editor. AWWA has its headquarters in Denver, Colorado.