Purification efficacy of different parts of Mangifera indica on water samples from contaminated drinking water sources in chanchaga local government area of Niger State, Nigeria

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Abstract The use of natural coagulant in water purification has gain popularities owing to the public health consequences of consuming untreated water and the carcinogenic properties of synthetic coagulant. In the present study, the leaf, stem, seed and bark powdered samplesMangifera indicawere used to treat contaminated river, stream and pond water at concentrations of 0.1, 0.2, 0.3, 0.4 and 0.5 g/L. Microbial quality and physicochemical properties of the water samples were investigated after 0, 12 and 24 h of treatment. The results showed that the addition ofM. indicaconsiderably decreases or even eliminated (in most cases) the aerobic heterotrophic bacteria, coliforms, salmonella and shigella in the water samples. All parts ofM. indicatested decreased the pH, dissolve oxygen, total dissolved solid, calcium, nitrate, turbidity and chemical oxygen demand contents of the water samples when compared with untreated water. The activities of the plant materials increase with increase treatment time and concentrations. In conclusion, the raw surface water (stream, river and pond) used for the study fall short of standard.Mangifera indicaleaf, stem, seed and bark materials improved the quality of the raw surface water based on the maximum permissible limit of microbial load and physicochemical parameters. This could serve as a cheaper and safer alternative to the synthetic coagulant.

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