Socio-sanitary and environmental impact of the sanitation network dysfunctions on niangon nord and toit rouge inhabitants (yopougon- Abidjan)

The dysfunction of the sanitation works in Niangon Nord and Toit Rouge, districts of Yopougon (Abidjan), results in the flow and stagnation of domestic wastewater in the households and in the streets. In contact with these kinds of water, the population is exposed to some diseases. The objective of this work is to highlight the socio-sanitary and environmental impacts of wastewater from the dysfunction of the sanitation network on the inhabitants of these districts. In order to do so, the register of customers’ requests of the DRANA maintenance and repair service was consulted, and a sample survey of households in the two districts was carried out. The data collected showed that the dysfunction of the sanitation works in Niangon Nord and Toit Rouge is caused by the bad behavior of the populations on these infrastructures. The wastewater analysis has shown high concentrations of physico-chemical and bacteriological pollutants. There is an average of 204.08 mg/L of Suspended Solids , 8.57 mg/L of (NO_3^-), 38.76 mg/L of de (NH_4^+), 2.46 mg/L of (PO_4^(3-)), 1.73.108 UFC/100 mL of total coliforms, 07.107 UFC/100 mL of fecal coliforms, and 2.39.107 UFC/100 mL of fecal streptococci. These waters near residential areas which are also playgrounds for children constitute a health risk for these families. The bacteriological contamination from these waters, as well as the odors they emit, would particularly cause malaria, typhoid fever, and diarrhea. On the other hand, the presence of nitrogen compounds would constitute a minor risk to human health in case of ingestion of these waters.