In the study, groundwater samples were collected from fifty wells in the northern region of Jordan. These samples have been assessed on the basis of various qualitative parameters. The considered water quality parameters are; pH, electrical conductivity, total dissolved salts, calcium and magnesium, sodium, potassium, carbonate, bicarbonate, chloride, sulphate, fluoride, sodium adsorption ratio, residual sodium carbonate and soluble sodium percentage. Regarding cation and anion constitutes, groundwater is suitable for irrigation and drinking purposes except of few wells. Electrical conductivity, pH, calcium, magnesium, sodium bicarbonate, chloride, sulfate, nitrate and phosphate concentrations are below the usual limit for irrigation water. In addition, the calculated values indicate a good to permissible use of ground water for irrigation.