Comparative Study of the Physicochemical and Microbiological Quality of Water from Wells, Boreholes and Springs Consumed in the Massissia District in Brazzaville, Republic of the Congo

The Republic of Congo in the course last two decades has been marked by a strong demographic explosion. increase its population accompanied significant demand for drinking water. Congolese populations order to meet their water needs, have recourse rainwater, surface and groundwater, because it is easy access. city Brazzaville, political capital Congo, also affected this problem. study carried out here aimed assess physicochemical microbiological parameters groundwater (wells, boreholes springs) consumed Massissia district. In work below were evaluated: pH, conductivity, hardness, major ions, undesirable substances as well some toxic elements (Lead, Cadmium, Iron Zinc) thanks techniques colorimetry, potentiometry spectrophotometry. main determined are E. Coli, Staphylococcus, Total Germs, Coliforms, Yeasts Molds. analyzes revealed that these waters acidic with pH values between 5 6.5, nitrate concentration evaluated 50 mg/L 60 mg/L, presence element Cadmium at variants 0.01 0.5 greater than standard required WHO. Microbiological bacteriological contamination coli wells whose origin faecal contamination, yeasts molds, staphylococcus, germs coliforms Ps Aeuginosis all points, making real danger consumers.