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Institut de l'Aigua de la Universitat de Barcelona, Laboratori d'Edafologia, Facultat de Farmàcia, Institut de Recerca de l'Aigua, Universitat de Barcelona, Joan XXIII, s/n. 08028 Barcelona, Spain (e-mail: M. Salgot: salgot{at}ub.edu)
In an era of increasing contest for limited water resources, the wise joint management of conventional and non-conventional water resources must be considered. Water scarcity is aggravated in coastal zones which are often characterized by high population densities and intense economic activities making heavy seasonal water demands. In this context, the use of non-conventional water increases the availability of water supplies. Non-conventional water resources of lower quality could be directed to meet additional needs. As a consequence, significantly more potable water would be available to meet human demand for safe water.
Non-conventional water resources are described: waste water reclamation and reuse, and its potential application for increasing groundwater resources, as well as several practical applications.