Sami Kamel, R., Rashid Mauff, K. and Abbas Hassan, A. 2018. Assessment of some groundwater wells in the west of Al Najaf city for by Water Quality Index (WQI). Al-Qadisiyah Journal of Pure Science. 23, 2 (May 2018), 177 - 189. DOI:https://doi.org/10.29350/jops.2018.23.2.751.