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La presente etude porte sur la qualite de l’eau consommee dans 7 villages de la commune d’Adjohoun. Les differents entretiens avec la population ont revele que l’eau consommee dans cette localite a toujours ete source de graves maladies telles que : la diarrhee, la bilharziose, le cholera. Des analyses physico - chimiques comme le pH, la conductivite, la couleur, le calcium, le chlore ont ete effectues avec un multiparametre de marque COMBO BY HANNA et la recherche des coliformes totaux, des coliformes fecaux et des streptocoques fecaux sont effectuees par les methodes d’ensemencement sur milieux de culture. Les resultats des analyses physicochimiques ont revele que la conductivite varie entre 20 et 64 μs/cm; le pH se situe entre 4,77 et 6,55. La couleur tres elevee varie entre 57 et 226 UC, le chlore entre 10,65mg/l et 320 mg/l ; le calcium entre 0,8 l et 8,817 mg/l. L’analyse bacteriologique des eaux revele que le taux de coliformes totaux (17600 ; 14400 ; 22320 ; 3500 UFC /100 ml), de coliformes fecaux (1000 ; 1200 ; 3200 ; 250 UFC /100 ml), et de streptocoques fecaux (600 ; 660 ; 900 ; 200 UFC /100 ml) ne sont pas conformes aux normes d’une eau de boisson. Cette contamination est d’origine fecale et s’explique par les nombreux cas de maladies hydriques enregistrees. © 2018 International Formulae Group. All rights reserved. Mots cles: Qualite, eau de consommation, commune d’Adjohoun, Benin English Abstract This study examines water quality consumed in seven municipalities of Adjohoun. Various interviews with population revealed that water consumed has always been the cases of serious diseases such as: diarrhea, bilharzia, cholera in these localities. Physico - chemical analysis such as pH, conductivity, la color, calcium, chloride were done with Hanna multiparameter. Bacteriological analysis such as total coliforms, fecal coliforms and fecal streptocoques fecaux were also done. Results shown that conductivity varied from 20 to 64 μs /cm; pH was between 4.77 and 6.55. Water color was very high and varied from 57 to 226 US. Chlorine was between 10.65 mg / l and 320 mg / l ; calcium between 0.8 l and 8.817 mg / l. Bacteriological analysis of the water revealed that total coliforms (17600, 14400, 22320, 3500 UFC /100 ml), faecal coliforms (1000, 1200, 3200, 250 UFC/100 ml) and faecal streptococci (600; 660; 900; are higher than standards drinking water. These fecal contamination could explain numerous diseases registered in theses localities. © 2018 International Formulae Group. All rights reserved. Keywords: Consumed water quality, Adjohoun, Benin

Etude de la qualité des eaux consommées dans la commune d’Adjohoun au Bénin