This study aims to assess the quality of groundwater in the aquifer system of the Kandi Sedimentary Basin (BSK). The methodological approach adopted is based on the evaluation by the dosage of physico-chemical parameters of groundwater and the calculation of water quality indices (IQE). The results obtained show that the values of electrical conductivity, pH, dissolved solids rate (06ppm and 584 ppm) and temperature (29_32.8 C) are within the quality standards with the exception of EPP samples LOLO and Drogine. The quality of groundwater in a (BSK) is assessed from different criteria. The calculation of water quality indices made it possible to identify the classes of groundwater quality and the different possible uses. Overall, the waters are of good quality and can be used for drinking, irrigation and industry.