Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2006.418.421BhalliJaved A.KhanQaiser M.3200693In present study Tanning industries were selected as to evaluate their ability to cause environmental pollution. Tanning industries are present through out Pakistan being more concentrated in Kasur, Karachi, Sialkot and Faisalabad. Effluent samples were collected from 12 different sections of 6 different industries form Sialkot, Kasur and Faisalabad. These samples were tested for pollution level analysis. Parameters adopted to study pollution levels were pH, Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Solids (TS) and Chromium (Cr) Conc. Tanning industry is the major Cr consuming industry. Much of this Cr comes out in effluents rendering them polluted. Cr is highly mutagenic and carcinogenic, therefore effluents containing Cr as a pollutant are the potential mutagenic and carcinogenic agents. Study was focused on the pollution levels in tanning industry effluents to evaluate the damage caused by these effluents.]]>Anonymous,19891989Anonymous,1998The Gazette of Pakistan Environment and Urban Affair Division,19991999Camp, T.R, A. Dresser and J.E. Mckee,1994Pennsylvania.]]>1994pp: 159162Hanif, M., M.A. Butt and M.A. Khattak,1987pp: 7pp: 7Howard, C.S.,19835411Jirka, A.M. and M.J. Carter,19754713971397Kamal, A.R., F. Bilquis and Z. Mahmood,1990Khawaja, M.A. and S. Nasreen,19931993pp: 159162Kathrine, S. and G. Schwedt,19943503843Rump, H.H. and H. Krist,19922nd Edn.,pp: 89-92pp: 89-92Venier, P., A. Montaldi, L. Busi, C. Gava, L. Zentilin, G. Tecchio, V. Bianchi and A.G. Levis,1985613271335