||Technical and educational organization of 38,000 individual members and 75 affiliated member associations representing water quality professionals around the world. WEF members, member associations, and staff proudly work to achieve our mission to provide bold leadership, champion innovation, connect water professionals, and leverage knowledge to support clean and safe waterworldwide. WEF's annual conference and exhibition WEFTEC, located in the USA each october, has grown into the largest annual event on water quality in the world. WEF publishes a variety of technical publications, including newsletters, manuals of practices and other books, magazines, and journals. WEF publications cover a wide variety of topics and reach both U.S. and international audiences.