Groundwater Pollution and Public Health Risk Analysis in the Vicinity of Reppi Solid Waste Dumping Site, Addis Ababa City Ethiopia
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Date
2007-08
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Addis Ababauniversity
Abstract
Background: The daily waste generation in Addis Ababa city from each individual is expected to be 0.252Kg. Current waste generation in the city is 2,940 m3/day of which 80% is colleted and disposed on dumping site every day. This open dumping site has no liner system and other groundwater pollution and public health risks control mechanism.
Objective: To analyze groundwater pollution and public health risks in the vicinity of Reppi solid waste dumping site Addis Ababa City, Ethiopia.
Methods: A cross sectional study was conducted in Reppi solid waste dumping site from April 10 to 25/ 2007 to analyze associated risks to the groundwater and the public health in its vicinity. For groundwater issue leachate, nearby well water and far away spring water samples were collected based on the distance difference and for public health issue. Based on standard sampling procedures 316 in the near by community and 316 from the controlled group were used for the study. Extreme care was taken to avoid alteration of chemical composition of samples during sampling. The study parameters for leachate, and groundwater quality were determined in Addis Ababa City Environmental Protection Authority and Ethiopian Geological Survey Water Laboratories. It includes physicochemical parameters such as PH, chloride, total hardness, alkalinity, TDS, TSS, DO, BOD, COD, Nitrate, Ammonia, Phosphate and trace metals. Standard methods were used for the analysis of the samples. The public health parameters were collected using pre designed questionnaires.
Result and discussion: Physicochemical analysis of leachate and groundwater showed that more than 95% of parameters in nearby well water analysis is more higher than the far away spring water and much exceeded WHO drinking water quality standard. This may be due to contaminants transport from dumping site to ground water. More than 95% risk ratio Public health risks were found in the nearby residents.
Conclusion: From this study we can conclude that there is an increase in risk to ground water and public health that is reported near Reppi solid waste dumping site. There fore the concerned authority should take appropriate intervention measures to groundwater and the health of the community
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Groundwater Pollutio