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L’objectif de cette etude vise a evaluer la qualite physico-chimique et parasitologique des eaux de sources, des puits et du cours d’eau dans la commune d’Akono. L’etude entreprise d’Avril 2017 a Mars 2018 a permis d’effectuer les echantillonnages pour des analyses physico-chimiques et parasitologiques. Les parametres physiques tels que la temperature (T °C), la turbidite, les matieres en suspension (MES) et la couleur et quelques parametres chimiques : le pH, la conductivite, l’oxygene, l’oxydabilite, les nitrates, les nitrites, l’azote ammoniacal ont ete mesures. Les eaux de la commune d’Akono sont legerement acides (Ph=6,1±0,3 UC) et faiblement mineralisees (conductivite=95,5±67,5 µS/Cm). Les teneurs en azote obtenues sont inferieures aux normes. De fortes correlations ont ete mises en evidence entre la conductivite, la turbidite, la couleur, les MES et les densites des oocystes obtenues. Les analyses parasitologiques des echantillons d’eau ont permis d’identifier des oocystes du genre Cryptosporidium sp (141 oocystes/L), de Cyclospora cayetanensis (52 oocystes/L) et d’Isospora belli (40 oocystes/L). Les eaux ont ete soumises a une pollution d’origine fecale dans la commune d’Akono. L’usage de ces eaux pourrait presenter un risque sanitaire pour les populations. The objective of this study is intended to assess the physico-chemical quality and the parasitological quality of spring waters, wells and stream in the Akono city council. The study was carried out from April 2017 to March 2018. Within this time, samples for physicochemical and Parasitological analyses where collected. Physical parameters such as temperature (T °C), turbidity, suspended solids (SS) and the color and some chemical parameters: pH, conductivity, oxygen, the oxidability, nitrates, nitrites, ammonia were measured. The waters of Akono municipality are slightly acidic with an average pH of 6.1±0.3 UC. These waters are lowly mineralized with an average electrical conductivity of 95.5±67.5 µS/cm. The concentrations of nitrogenous compounds obtained are slightly below substandard. Strong correlations were observed between electrical conductivity, turbidity, color, SS by the oocysts and densities obtained. Parasitological analyses were made by observation using an optical microscope 40 X objective. The results reveal the presence of oocysts of Cryptosporidium sp. (141oocysts/L), Cyclospora cayetanensis (52oocysts/L) and Isospora belli (40oocysts/L). The water was subjected to pollution of faecal origin in the Akono municipality. The use of this waters could present a health risk for the population.

european scientific journal

Caractéristique Physico-Chimique Etdynamique des Formes Environnementales des Coccidies Entériques Dans Les Eaux De Sources, Puits et Cours D’eau dans La Commune d’Akono(Cameroun, Afrique Centrale)