An etiological investigation of cholera has been conducted in the city of Kisangani, to the township of Lubunga (Province of the Tshopo). A sample 528 households were chosen there. 504 households have been kept after the criteria of inclusion and only 480 had obeyed the criteria of non-inclusion; either a rate of exploitable answers of 95,2%. This allowed us to identify the reasons of the repetition of the cholera epidemics while verifying its 4 factors of risk there through the customs of the population living for more than 3 years and, having accepted to answer the questionnaires of the investigation correctly. These reasons are: Consumption of infected water, non-hand washing, mismanagement of excreta, existence of unhygienic latrines, poor handling of corpses and flooding. This survey shows that 83.3% of households consume untreated river water. Drinking water management utensils are insufficient in number or on average two utensils per household. And 63.0% of these utensils are poorly cleaned (sand, ash, handmade or river water). 59.5% of households do not practice the technique of washing hands properly before eating. 56.2% of households have unhygienic latrines and 24.1% of households live without latrines. 59.5% of households practice the mishandling of corpses during cholera epidemics according to their customary ritual, and 39.5% of households mismanage their latrine excreta.