The project concerns the implementation of two (2) measures for the protection of water intended for drinking on the island of Lesvos in compliance with the requirements of European Directive 2000/60/EC. “Study of the General Water Plan (Masterplan) of Lesvos, the study and recording of rational, efficient and sustainable ways and methodologies for the management of the water system of D. Lesvos aiming at the quantifiable, qualitatively and environmentally safe, and affordable coverage of the water demand in the area of responsibility of the Municipality of Lesvos, through the appropriate utilisation of water resources available to meet this demand,