In many parts of the world, health problems have often been caused by untreated wastewater. The objective of this study was to determine the pollution level of wastewater in Abidjan city and to evaluate their impact on marine environment. Thus, wastewater samples were collected and analyzed according to French Association of Standardization (FANOR). The results showed that the values of these parameters are ranged on average between 14500 and 18500 mg/L for Biological Oxygen Demand (BOD 5), between 36000 and 41800 mg/L for Carbon Oxygen Demand (COD) and between 75 and 145.5 mg/L for Suspended Matters (SM). All these values are beyond World Health Organization recommendations for wastewater discharge. However, the analysis of the ratios between the COD and BOD 5 of the different effluents showed that it is ranged on average between 1.44 and 2.60. That means that wastewaters have a domestic character and are therefore easily biodegradable. So, the government should build a sewage treatment plant in Abidjan city to minimize health and environmental risks.
The emergence of pathologies and their impacts on the health of the populations were studied in the municipalities of Yopougon, Abobo, and Treichville. This study highlights the conditions of noxious life and the health of the populations. To achieve this, a transverse investigation with the households was conducted on 300 households in 2013. It is concerned with the sources of water supply. It was noticed that 80% of the households from the municipality of Abobo, 90% from Yopougon, and 85% from Treichville use the water from public adduction network. Besides, in these municipalities, the mode of management of waste water is to eliminate the waste through autonomous works, collective works or nature. So in these municipalities, a retrospective study was made on these sanitary data registered in health centers during these years. So, in the municipality of Yopougon, the data of year 2006 produced 124446 cases of malaria, acute respiratory infections and diarrheic diseases. To Treichville, 28547 cases of morbidity were collected during the year 2008. For Abobo, the sanitary data of the year 2008 showed 89280 cases of morbidity. The children of less than 5 years of these municipalities are exposed to a lot of diarrheic diseases; with 56.58% cases in Yopougon, 40.47% in Treichville and 42.03% in Abobo.
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