26Feb 2018

URBANIZATION AS A DRIVING FORCE IN SURFACE WATER QUALITY DEGRADATION: THE CASE OF KENYA.

  • Rongo University, Department of Environmental studies.
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This study investigates urbanization as a driving force in surface water quality degradation in Kenya. The study is based on the collection of available historical data, supplemented by field observations. Increase in anthropogenic activities which is as a result of urbanization is a major force in changing the hydrological cycle as well as affecting the water quality. Studying the impacts of urbanization on water quality is becoming a wide-focused topic in the region. In this study, the authors attempt to link the urbanization effects such as agricultural development, car wash, industrial effluent management, waste disposal and the subsequent water resources exploitation with the change of water environments in Kenya. Increase in level of industrialization, urbanization, agricultural activities, and population growth have resulted in increased demand for water as well as in an increased flow of contaminants into water bodies. Population increase in urban centres has intensified urban activities which have a direct influence on water quality within hydrographic basins because effluents flow into waterways in many cases without passing through any treatment process. The most significant contamination routes are those related to direct and indirect emissions of treated and untreated sewage, runoff, atmospheric deposition, and pollution. The quality of surface water has become a critical issue in many countries, especially due to concern about the scarcity of water, requiring a program for monitoring the surface and groundwater to protect this resource. In general, the unplanned urban development in Kenya has significantly degraded the region?s water resources and significant actions such as upgrading the sewage waste disposal system, locating other sources of water supply, and strict water management will all be needed to resolve the problems that have arisen. The study suggests an adoption of the environmental management slogan which states ?Our surrounding, our well-being and our prolonged perfect life.?


1. Castilho J?nior, A. B (Coord.). Gerenciamento de res?duos s?lidos urbanos com ?nfase na preserva??o de corpos d??gua: preven??o, gera??o e tratamento de lixiviados de aterros sanit?rios. Rkio de Janeiro: ABES, 2006. 494 p. 2. Christensen, T.H.; Kjeldsen, P. Basic biochemical processes in landfills. In: Sanitary Landfilling: Process, Technology and Environimental Impact. Christensen, T.H.; COSSU, R.; Stegmann, R. (eds.). Academic Press, London, UK, p.29, 1989, Cap. 2.1. 3. Holt, M. S. Sources of chemical contaminants and routes into the freshwater environment. Food and Chemical Toxicolgy, Orlando, v.38, p.21-27, Apr. 2000. Supplement 1. 4. Lanza, V. C. V. Caderno T?cnico de reabilita??o de ?reas degradadas por res?duos s?lidos urbanos. Belo Horizonte: Funda??o Estadual do Meio Ambiente, 2009. 28 p. 5. Markandya A. Water quality issues in developing countries. In: Lopez R, Toman MA, (ed.) Economic Development and Environmental Sustainability. New Policy Options. Oxford University Press, New York, p. 307-344, 2006. 6. Oliveira, S.; Pasqual, A. Avalia??o da qualidade da ?gua subterr?nea a jusante do dep?sito de res?duos s?lidos municipais de Botucatu/SP. Revista Energia na Agricultura, Botucatu, v.16, n.4, p.25-35, 2001. 7. Pesce, S. F.; Wunderlin, D. A. Use of water quality indices to verify the impact of C?rdoba City (Argentina) on Suquia river. Water Research, London, UK, v.34, p.2915-2926, (2000). 8. Pinto, D. B. F. et al. Qualidade da ?gua do Ribeir?o Lavrinha na regi?o Alto Rio Grande ? MG, Brasil. Ci?ncia e Agrotecnologia, Lavras, v.33, n.4, p.1145-1152, jul/ago. 2009. 9. Pokhrel D.; Viraraghavan T. Municipal solid waste management in Nepal: practices and challenges. Waste Management, New York, v.25, n.5, p.555-562, 2005. 10. Ros?ngela Francisca de Paula Vitor Marques1, Ant?nio Marciano da Silva2, Luciano dos Santos Rodrigues3, Gilberto Coelho2 (2012). Impacts of Urban Solid Waste Disposal on the Quality of Surface Water in Three Cities of Minas Gerais ? Brazil. 11. United Nations (2014). World Urbanization Prospects. Retrieved from https://www.google.com/?gws_rd=ssl#q=Urban+and+rural+population+of+the+world%2C+1950%E2%80%932050 7th Dec 2016. 12. Walls, J. S. Protecting groundwater from landfill leachate. Water Sewage Works, Hamilton, v.122, p. 68, 1975. 13. World Bank indicators (2014). Kenya-population Density and Urbanization http://www.tradingeconomics.com/kenya/urban-population-growth-annual-percent-wb-data.html retrieved on 7th Dec. 20016 14. Zanoni, A. E. Ground water pollution and sanitary landfills: a critical study. Ground Water, Westerville, v.10, n.3, p.13, 1972.

[George Ouma Ochola, Daniel Odinde Nyamai and Steve Omari Ngodhe. (2018); URBANIZATION AS A DRIVING FORCE IN SURFACE WATER QUALITY DEGRADATION: THE CASE OF KENYA. Int. J. of Adv. Res. 6 (Feb). 1733-1739] (ISSN 2320-5407). www.journalijar.com


George Ouma Ochola and Steve Omari Ngodhe
Rongo University

DOI:


Article DOI: 10.21474/IJAR01/6613      
DOI URL: https://dx.doi.org/10.21474/IJAR01/6613