<p>Cluster and Factor analysis were performed on 55 well representative groundwater samples taken from Water Authority open files and samples during 2011. A total of 12 water variables data including, Na, Ca, K, Mg, CI, HCO₃, SO₄ and NO3 beside to chemical analysis like TC, TDS and PH were analyzed. The study finds that there are 2 factor&nbsp; model variation : factor one include concentration of Na , k, Mg ,Cl , EC, TDS ,NO₃ ,HCO₃, Ca and SO_{4 ,}where as factor 2 includes TC and PH . These 2 factor explains 79.8% of the total groundwater quality variation. A two main hydrochemical groups were demonstrated using Q- mode cluster analysis , the first group shows the similarity between_,K, Mg, NO₃and Na ,which probably represent the effects of weathering of the rich feldspare and mica , in addition to agriculture fertilizers. The second cluster is Cl and HCO₃ dominated but also contains low concentration of SO₄.</p>