The sixteenth SMAGUA International Water Exhibition, and the Sixth Environment Exhibition will be jointly held at the Zaragoza Trade Fair Centre in Spain from 17–20 February 2004. These international biennial events feature the most recent innovations in water and environmental management. Both will bring together many professionals involved in those sectors, who will be able to examine the broadest array of systems and equipment for water management and environmental care. SMAGUA 2004 will showcase the most advanced water technology for the efficient water management, from prospecting to distribution to delivery to treatment. SMAGUA is structured into six major areas, namely prospecting and extraction, channelling, transport and storage, treatment and purification, irrigation, miscellaneous equipment and engineering and trade publications. The Environment Exhibition is sub-divided into the following sectors: energy environment, water environment, air environment, waste treatment, environmental engineering and miscellaneous environmental activities