International Journal of Life Science and Agriculture Research

Najaf is a biggest city an agricultural the result of this study carried to evaluate the quality of groundwater for drinking and agricultural purposes. To evaluate the quality of well water in the southern and western Najaf region, 27 water wells located in the area were selected and some chemical and physical parameters (pH, electrical conductivity, total dissolved solids, total hardness, calcium, magnesium, sodium, potassium, chloride, bicarbonate, and sulfate) were tested to calculate the water quality index for drinking water. The obtained values ​​for water quality parameters were compared with the World Health Organization (WHO) guidelines. Seven irrigation test parameters were also selected to calculate the water quality index such as: EC, SSP, SAR, MAR, PI, KR, and PS, which were used in the traditional way. The results showed that the groundwater of most samples was suitable for drinking according to the WHO guidelines (2011). Whatever, the calculated DWQI for drinking use showed that 10% of the water samples were founded good, 40% were very poor, and 50% were unfit for drinking. For irrigation purposes, most of the samples were fit table for irrigation. The calculated IWQI showed that 15% of the water samples were excellent, and 45% were good. Most of the groundwater samples in this area are suitable for irrigation according to WHO guidelines (22).

physical and chemical parameters, Groundwater wells, Water quality indexes for Drinking DWQI , irrigation IWQI.

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