The main objectives of this research are to access ground water,a primary source of drinking water in the urban areas of Hawler Erbil and Bnaslawa in northern Iraq, and the non -carcinogenic human health risks of nitrate contamination associated with drinking water quality. For this purpose, twenty seven ground water samples were collected from wells to asses the hydrogeochemical characteristics and ground water quality for both natural and anthropogenic purposes during the wet (May 2020) and dry (September 2020) seasons.During the wet and dry seasons, NO3 in ground water ranged from 14to 61 mg/L and 12 to 60 mg/L with an average value of 35.7 and 29 mg /L, respectively. Approximately 25.92% of the samples exceeded the permissible limit of the WHO (2011) drinking water standard.the ratio of NO3 /Na vs.Cl/Na and SO4/Na vs. NO3 /Na indicate the effect of agricultural activities and waste water leakage from cesspools or septic tanks on the quality of ground water during the wet and dry seasons. The entropy weighted water quality index method ranked 62.5% and 75% of the urban ground water as not recommended for drinking, the remaing samples are moderately suitable in both wet and dry seasons.Due to high nitrate in drinking water, non-carcinogenic human health risk levels vary as infants >child> adults.The main findings obtained from this study can assist policymakers in better understanding the hydrogeochemical properties of ground water in terms of drinking water safety, thereby facilitating the management of water resources to take the necessary measures.