The Segura Basin in Spain is the driest in Europe. With 365 mm of annual rainfall, this basin has the lowest rainfall in the European Union. Nevertheless, it is also a region which exports fruit and vegetables. The Segura River is thus the main water sources for irrigation. In 1986, when Spain became a member of the European Union, the production of agriculture and canned food significantly increased. As a consequence, a rise in wastewater discharges and lack of water in the already water-stressed Segura River brought extreme deterioration of the water-related ecosystem and a strong social discontent.