Aremu, M. O.Sangari, D. U.Musa, B. Z.Chaanda, M. S.2023-12-142023-12-142008-08-02Mohan, S. V.; Nithila, P.; Reddy, S. J. 1996. Estimation of heavy metal in drinking water and development of heavy metal pollution index. J. Enviro. Sci. and Health, A31 (2): 283 286. Mombershora, C. O.; Osibanjo, O.; Ajayi, S. O. 1983. Pollution studies on Nigerian Rivers; the onset of lead pollution of surface waters in Ibadan. Environ. Int., 9:81-84. Health and Disease. Lea and febiger, Philadelphia, USA. In: Nutrition. Eds. Nieman D. C.; Butterworth, D. E.; Nieman, C. N. WmCBrown Publishers, Dubuque, USA, pp. 276 282. Tareq, S. M.; Rahman, S. H. 2002. Potable water quality of Jahangimagar University Campus, Savar. Banglandesh U. J. Sci., 25:147 152. Templeton, R. G. 1984. Freshwater fisheries management fishing News Books Limited, Famham, Survey, pp. 183. US Environmental Protection Agency 1992. Interim guidance on interpretation and implementation of aquatic life criteria for metals. (USEPA, Health and Ecological Criteria Division, Office of Science and Technology). US Environmental Protection Agency, 2002. Current drinking water standards. (Office of Groundwater and Drinking Water. Government Printing Office,- Washington DC). Nriagu, ]. O.; Pacyna, J. M. 1980. Quantitative assessment of worldwide contamination of air, water and soil with trace metals. Nature, 333:134 139. Obaje, N. G.; Nzegbuna, A. I.; Moumouni, A.; Ukaonu, C. E.2005. Geology and mineral resources of Nasarawa State. Bulletin of Department of Geology and Mining, Nasarawa State University, Keffi, Nigeria. Ogunawo, C. O. 2004. Coping with domestic water supply problems in Nigeria Urban Centres. The Ijebu- Ode City experience. Int. J. Env. Issues, 7(1&2):21 Okedi, C.; Oni, O. O. 1997. Basic Water Treatment Operations, edited by outreach Department, Published by National Water Resources Institute, Kaduna, pp. 1 90 Okoye, B. C. 0.1991. Heavy metals and organisms in the Lagos Lagoon. Int. J. Environ. Stud., 37: 285 292. Okuo, J. M.; Okonji, E. I.; Omoyerere, F. R. 2007. Hydrophysico-chemical assessment of the warn coastal aquifer, southern, Nigeria. J. Chem. Soc., Nigeria, 32(2): 53 64. Olaofe, O.; Sanni, C. O.; 1988. Mineral contents of agriculture products. Food Chem., 30:73 77. Oludare, A. C.; Adedepo, O. J.; Balogun, O. 2002. Environmental Safety, Protection and Policy for Sustainable Development. Environ. Rev., 4(1): 515 527. Oshodi, A. A.; Ipinmoroti, K. 0.1990. Determination of some nutritionally valuable minerals in Irvingla gabonensis, Ghana J. Chem., 1(2): 138 142. Osibanjo, O.; Ajayi, S. 0.1980. Trace metal levels in the tree barks as an indication of pollution. Environ. Int., 4:236 244. Oyebande, L. 1986. Satisfaction of basic needs in Nigeria, Potable water supply for domestic needshttps://keffi.nsuk.edu.ng/handle/20.500.14448/5540Water samples collected from nine sampling points of three different sources (Well, Bore-hole and Stream) within Toto Local Government Area of Nasarawa State, Nigeria were analysed for trace metals and physico-chemical properties. The trace metals Na, K, Cu, Mg, Fe, Ca, Zn, Pb, Cd, As, Se, Cr and Hg were analysed using atomic absorption spectrophotometric method. Alkalinity, pH, temperature, turbidity, conductivity, total solids, total dissolved solids, suspended solids and soluble anions such as phosphate, chloride, nitrate and bicarbonate were the physico-chemical parameters analysed using standard techniques. The results showed that Cd and Hg were not at detectable range for all the water samples. High spatial variations in the concentrations of the metals and physico-chemical parameters determined were recorded. The trace heavy metals were below the deleterious level while the physico-chemical properties of the water were within the required standard limits set by World Health Organisation (WHO) for drinking water except phosphate ion. However source protection is proposed for these waters for the benefit of mankindesGround-water, stream, trace metals, physico-Keywords: chemical properties.ASSESSMENT OF GROUND-WATER AND STREAM QUALITY FOR TRACE METALS AND PHYSICO-CHEMICAL CONTAMINATIONS IN TOTO LOCAL GOVERNMENT AREA OF NASARAWA STATE, NIGERIAArticle