Water supply and water scarcityWater supply and water scarcity Εισαγωγή Επιμελητή Editorial 2021-05-212020enThis paper provides an overview of the Special Issue on water supply and water scarcity. The papers selected for publication include review papers on water history, on water management issues under water scarcity regimes, on rainwater harvesting, on water quality and degradation, and on climatic variability impacts on water resources. Overall, the issue underscores the need for a revised water management, especially in areas with demographic change and climate vulnerability towards sustainable and secure water supply. Moreover, general guidelines and possible solutions, such as the adoption of advanced technological solutions and practices that improve water use efficiency and the use of alternative (non-conventional) water resources are highlighted and discussed to address growing environmental and health issues and to reduce the emerging conflicts among water users.http://creativecommons.org/licenses/by/4.0/Water129Tzanakakis_et_al_Water_12(9)_2020.pdfChania [Greece]Library of TUC2021-05-21application/pdf604.9 kBfree Tzanakakis Vasileios A. Paranychianakis Nikolaos Παρανυχιανακης Νικολαος Angelakis, Andreas N MDPI Water management Water scarcity regime Water reuse Water use efficiency Rain harvesting Desalination