n IMIESA - Wastewater characteristics : pipes, pumps and valves




Waste from urban and dense settlements generally reaches the larger water environment in four waste streams : sewage waste, grey water, storm water and solid waste / litter. In Africa, the smaller proportion of the population who has in-house water supplies generate more grey water per capita. The more affluent communities generate even more grey water; moreover, the very tiny ratio of Africans who are connected to piped sewerage systems produce more sewage wastewater.


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