This study describes the role of water in the human body, the norm of water consumption and, specifically, this paper is based on the study of the PH parameter and the potential of redox (ORP). After studying the OPR of water in different districts of Chisinau, we found out that the quality of the potable water does not correspond to the norms. The redox of water in each district show high positive value. This thing may cause several functional disorders in human body, as well as trigger diverse pathologies.