Contributing to the fight against waterborne diseases in the Kakongo sector in the DRC is the overall objective of this research. Water samples taken from sixteen sources in sixteen villages belonging to four groups in this sector were sent to the laboratory in accordance with WHO standards. Indeed, the results of physico-chemical analyzes in the laboratory have shown that almost all the sources of water consumed by the population of this sector is not drinkable. Microbiological analyzes have shown that 50% of the sources are started with Escherichia coli, 81.2% with total germs and 68.7% with faecal coliforms, proof that on the basis of WHO requirements, the waters of these sources are unfit for human consumption. The danger remains open in this sector, it is imperative and urgent to develop these sources, popularize good techniques of household waste management and consider sustainable environmental education among the people of the province of Kongo Central in general and the Kakongo sector in particular, if we want to save a multitude of lives at risk as advocated by the Millennium Development Goals. The consumption of these waters without any treatment presents very serious health risks for the population.