An assessment of the ground water quality was carried out in Qasrr Al Akhiar area, Libya. The study aimed to examining the quality of various samples of ground water as it relates to public health. The purpose of this work is to investigate the physicochemical characteristics to evaluate the quality of ground water in irrigational area whether it is a suitable for drinking purposes or not. Eight sites were selected in northern of Qasrr Al Akhiar region and three samples were taken from each well sites. Physicochemical characteristics of water were carried out, characteristics which were measured are PH, Electrical conductivity EC, Chloride, Total Alkalinity, Total Dissolved Solids (TDS) and Total Hardness. The obtained results were compared with World Health Organization WHO standards and Libyan standards (LS). The average values of physicochemical characteristics were observed as PH 7.6, electrical conductivity 2310.6, TH 606.5 mg/l, total alkalinity 332.5 mg/l, TDS 1502.1 mg/l, chloride 398.4 mg/l. The results revealed that most of measured parameters of water samples were found out of limit according to the above standards.