ZINNAE, Cluster for the efficient use of water, integrates the main economical agents that are linked with an efficient use of water in the city of Zaragoza: companies of different nature (water saving technology, water measuring and meter reading technology, companies linked with the water supply, sanitation and treatment, water facilities, etc.), the main research and training centres in the region, as well as the local, regional and national water public administrations. ZINNAE was created with the following mission: To promote an efficient and sustainable use of water in Saragossa as well as an associated energy consumption in urbanized areas, getting different public and private actors to collaborate, starting from knowledge generation, demonstrative projects and innovative solutions.