الملخص

This study examined groundwater in five villages located south of Nineveh Governorate, northern Iraq, which are (Asfiya, Harara, Al-Rasif, Al-Na'ana, and Tal Wai). One well was selected from each village during the autumn, winter and spring seasons for studying it and showing its quality by studying its physical and chemical properties and compared results with the upper limits allowed by the World Health Organization and the application of the water quality index (WQI). to determine the suitability of the studied water for drinking and various domestic uses.The study indicated that the pH rates ranged between (7.75) in the water of village Al-Na'ana to (8.08) in the water of village Al-Rasif, and the values of the total dissolved solids (TDS) ranged between (1123) mg/l in the water of village Tal Wai and (1933) mg/l in the water of village Asfiya. The total alkaline rates ranged between (220-490) mg/l, and the study areas recorded an increase in the total hardness values As far as the limits allowed by World Health Organization, their rates ranged between (1100-1660) mg/l, and the concentrations of calcium ions ranged between (214-492) mg/lWhile the results of the water quality index (WQI) indicated that the WQI values of the studied groundwater ranged between (51) in the water of villages Harara and Al-Na'ana and (60) in the water of village Al-Rasif, which indicates that the studied water is of poor use for drinking and various domestic uses.