Groundwater resources are one of the most vulnerable environmental components, increasingly subjected to contamination and degradation, mainly due to human activities; the solution, in the Italian legislation framework, is represented by Human Health Risk Assessment, which helps define the intervention priorities at the affected site by evaluating the potential adverse health and environmental effects deriving from the release of a contaminant. This thesis work was developed to support the realization of a HHRA, second phase of a broader remediation plan of a contaminated site located in Borgaro Torinese (Piedmont, Italy), focused on the assessment of groundwater quality following the detection of heavy metals and chlorinated solvents contamination.