Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2006.1652.1658BaghvandA. NabiG.R. MehrdadiN. GivehchiS. ArdestaniM. 8200668Industrial development and misuse of groundwater in Tabriz are the main cause of groundwater metal contamination. In this study concentration of Cr , Pb , Hg , Zn , Cu and Cd in groundwater in industrial area of Tabriz were evaluated. Cluster analysis of data showed that , the concentration of Hg is 82 which is twice as much as standard level. The main reason of high level of Hg was found petrochemical industry in the area.]]>Baghvand, A.,1995Baghvand, A. and S. Givehchi,2005Mahmodian, S.A.,20022002Rand, M.C., E.A. Greenberg and J.T. Michael,1994