Ndjili River

The Ndjili River is a river in the Democratic Republic of the Congo that flows through the capital city of Kinshasa and joins the Congo River. The river is a significant water source for the city, but is often polluted with human waste, leading to issues with water purification. The river's catchment area has sandy soils and steep topography, leading to soil erosion and sediment pollution, which can shut down water purification plants. Despite these challenges, a project financed by the World Bank in 2009 doubled the capacity of the Ndjili water treatment plant, providing nearly 65% of Kinshasa's water supply.learn more on wikipedia