GHEORGHE ROMANESCU, MONICA ANCA CRETU, IOAN GABRIEL SANDU, ELENA PAUN, ION SANDU* CHEMISM OF STREAMS WITHIN THE SIRET AND PRUT DRAINAGE BASINS: WATER RESOURCES AND MANAGEMENT This study aims to underline the importance of water reserves in the life of local communities and to quantify the value of certain basic elements that can affect their chemical properties. Most waters in eastern Romania are affected by a relatively high degree of salinity, they have high hardness, or are practically polluted. There is a positive relationship between geologic deposits and salt concentration. Additionally, there is a correlation between the salt waters (Mg and K salts) and an increase in the pH of rivers in the Carpathians and the Curvature Subcarpathians areas. The water salinity within the Moldavian Plateau is due to the dissolution of the salts within the marls and the clays of the geologic substrate and their transportation towards the topographic surface through the capillarity process. Freshwater is used for households and in the industrial sphere.