Caratterizzazione idrogeochimica e qualità delle acque di un acquifero ospitato entro rocce metamorfiche nella Calabria nord occidentale

This paper illustrates the results of an hydrogeological and geochemical study of an aquifer hosted intometamorphic rocks in north-western Calabria. The characteristics of the aquifer were investigated through chemicalanalyses of 35 samples of spring water, 23 samples of stream water and 4 samples of rain water. On the basis of Langelier-Ludwig classification diagram, most of the analyzed samples show a Ca-HCO3 composition; few samples fall inthe Na-Cl field suggesting immature composition typical of coastal areas. This is confirmed by the salinity values rangingfrom 0.2-0.7 meq/l from rain waters to 12-17 meq/l from fluvial and spring waters. The knowledge of the complexhydrogeological environment, the chemical composition of waters and the interpretation of geochemical maps allow usto define flow domain, groundwater quality and degradation processes affecting the studied aquifer.