B. Abida, S. Harikrishna, K. Irfanulla, M. Ramaiah, K. Veena and K. Vinutha, “Analysis of Flouride Level in Water and Fish Species of Sankey, Bellandur and Madivala Lakes of Bangalore. Rasayan,” Journal of Chemistry, Vol. 1, No. 3, 2008, pp. 596-601.
 W. C. Mullié, P. J. Verwey, A. G. Berends, J. W. Everts, F. Sene and J. H. Koeman, “The Impact of Pesticides on Palearctic Migratory Birds in the Western Sahel,” ICBP Technical, 1991, Cambridge, pp. 37-61.
 R. P. Richards and D. B. Baker, “Pesticide Concentration Patterns in Agricultural Drainage Networks in the Lake Erie Basin,” Environmental Toxicology and Chemistry, Vol. 12, No. 1, 1992, pp. 13-26. doi:10.1002/etc.5620120104
 D. Chapman, “Assessment of Injury to Fish Populations: Clark Fork River NPL Sites, Montana,” In: J. Lipton, Ed., Aquatic Resources Injury Assessment Report, Upper Clark Fork Riverm Basin, Montana Natural Resource Damage Assessment Program, Helena, Mont, 1993.
 K. P. Singh, A. Malik and S. Minha, “Water Quality and Apportionment of Pollution Sources of Gomti River (India) Using Multivariate Statistical Techniques—Case Study,” Analytica Chimica Acta, Vol. 538, No. 1-2, 2005, pp. 355-374. doi:10.1016/j.aca.2005.02.006
 H. Chang, “Spatial and Temporal Variations of Water Quality in the Han River and Its Tributaries, 1993-2002,” Water, Air, and Soil Pollution, Vol. 161, No. 1-4, 2005, pp. 267-284. doi:10.1007/s11270-005-4286-7
 J. C. Akan, E. A. Moses and V. O. Ogugbuaja, “Determination of Pollutant Levels in Mario Jose Tannery Effluents from Kano Metropolis, Nigeria,” Journal of Applied Science, Vol. 7, No. 4, 2007, pp. 527-530. doi:10.3923/jas.2007.527.530
 M. V. Ahipathy and E. T. Puttaiah, “Ecological Characteristics of Vrishabhavathy River in Banglore (India),” Environmental Geology, Vol. 49, No. 8, 2006, pp. 12171222. doi:10.1007/s00254-005-0166-0
 P. Helen, M. Neal, J. Alison, H. Linda and H. Wickham, “Water Quality of Treated Sewage Effluent in a Rural Area of the Upper Thames Basin, Southern England, and the Impacts of Such Effluents on Riverrine Phosphorus Concentrations,” Journal of Hydrology, Vol. 304, No. 4, 2005, pp. 103-117.
 A. Luiza, V. Alex, L. Reynaldo, B. Plinio and P. B. De Camargo, “Effects of Sewage on the Chemical Composition of Piracicaba River Brazil,” Water, Air, and Soil Pollution, Vol. 110, 1999, pp. 67-79.
 A. A. Olajire and F. E. Imeokparia, “Water Quality Assessment of Osun River: Studies on Inorganic Nutrients,” Environmental Monitoring and Assessment, Vol. 69, No. 1, 2001, pp. 17-28. doi:10.1023/A:1010796410829
 N. Mladenov, K. Strzepek and O. M. Serumola, “Water Quality Assessment and Modeling of an Effluentdominated Stream, the Notwane River, Botswana,” Environmental Monitoring and Assessment, Vol. 109, No. 1-3, 2005, pp. 97-121. doi:10.1007/s10661-005-5842-8
 K. Ravindra, M. Ameena, R. Monika and A. Kaushik, “Seasonal Variations in Physoico-Chemical Characteristics of River Yamuna in Haryana and Its Ecological Best Design Use,” Journal of Environmental Monitoring, Vol. 5, No. 3, 2005, pp. 419-426. doi:10.1039/b301723k
 K. Fytianos, A. Siumka, G. A. Zachariadis and S. Beltsios, “Assessment of the Quality Characteristics of Pinios River, Greece,” Water, Air, and Soil Pollution, Vol. 136, 2001, pp. 317-327. doi:10.1023/A:1015299130443
 K. Maya, K. N. Babu, D. Pabdmalal and P. Seralathan, “Hydrochemistry and Dissolved Nutrient Flux of Two Small Catchments Rivers, South-Western India,” Journal of Chemical Ecology, Vol. 23, No. 1, 2007, pp. 13-27. doi:10.1080/02757540601084029
 B. Anglin-Brown, A. Armour-Brown and G. C. Lalor, “Heavy Metal Pollution in Jamaica 1: Survey of Cadmium, Lead and Zinc Concentrations in the Kintyre and Hope Flat Districts,” Environmental Geochemistry and Health, Vol. 17, 1995, pp. 51-56.
 USEPA, “Risk Assessment: Technical Background Information,” 2002. http://www.epa.gov./reg3hwmd/risk
 A. J. L. Gomez, I. Giráldez, D. Sánchez-rodas and E. Morales, “Comparison of the Feasibility of Three Extraction Procedures for Trace Metal Partitioning in Sediments from South West Spain,” Science of the Total Environment, Vol. 246, No. 2-3, 2000, pp. 271-283. doi:10.1016/S0048-9697(99)00468-4
 W. J. Green, D. E. Canfield, G. F. Lee and R. A. Jones, “Mn, Fe, Cu and Cd Distribution and Residence Times in Closed Basin Lake Vanada (Wright Vally, Antatica),” Hydrobiologia, Vol. 134, No. 3, 1986, pp. 237-248. doi:10.1007/BF00008492
 M. Hutton, R. L. Chaney, C. R. Krishna, M. Murti, A. Olade and A. L. Page, “Groups Report,” In: T. C. Hutchinson and K. M. Meena, Eds., Lead, Mercury, Cadmium and Arsenic in the Environment, John Wiley, New York, 1999, pp. 35-41.
 I. M. Banat, E. S. Hassan, M. S. El-Shahawi and A. H. Abu-Hilal, “Postgulf-War Assessment of Nutrients, Heavy Metal Ions, Hydrocarbons, and Bacterial Pollution Levels in the United Arab Emirates Coastal Waters,” Environment International, Vol. 24, No. 2, 1998, pp. 109116. doi:10.1016/S0160-4120(97)00127-X
 R. Srikanth, A. M. Rao, C. S. Kumar and A. Khanum, “Lead, Cadmium, Nickel, and Zinc Contamination of Ground Water around Hussain Sagar Lake, Hyderabad, India,” Bulletin of Environmental Contamination and Toxicology, Vol. 50, No. 1, 1993, pp. 138-143. doi:10.1007/BF00196552
 N. Rajmohan and L. Elango, “Distribution of Iron, Manganese, Zinc and Atrazine in Groundwater in Parts of Palar and Cheyyar River Basins, SouthIndia,” Environmental Monitoring and Assessment, Vol. 107, No. 1-3, 2005, pp. 115-131. doi:10.1007/s10661-005-5307-0