The Efficient Use of Water Scientific Program (EUW) operates from IRTA-L1eida, a semi-arid basin in Catalonia with the largest fruit growing/production areas and where most of the irrigation districts are located. The EUW conducts strategic and applied research improving knowledge and facilitating efficient technology transfer both to growers (fruit trees, field crops and vineyards) and water managers (irrigation districts, water agencies, engineer offices and consultants). The programme is composed of a group of experienced researchers and technicians devoted to working in close collaboration with farmers to narrow the gap between advances in science and applied solutions in the field.