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Physicochemical properties of pure water samples in South Western Nigeria Ashaye O. A, Couple A. A, Afolabi O.O and Fasoyiro S. B Abstract Pure water samples were evaluated for their physicochemical properties. Samples 5 gave higher values of K(15 ppm), mg(6.75 ppm) and Zn (0.04 ppm). While sample 6 was high in P (4.85 ppm). The pH value of samples 8 (7.65) was also higher. Biochemical oxygen demand (B.O.D), Chemical Oxygen demand (COD) and Total suspended matter were not detected in all the samples. However the total dissolved solids of sample 3 (0.012%) was very low. The colour of samples 1, 2, 4, 5, 7 and 8 are not significantly different from each other, while samples 3 and 6 are significantly different from each other. The taste of samples 2 and 5 were objectionable while the odours of samples (2-8) were objectionable. It is apparent from this study that the quality of the pure water samples could improve if a better water treatment is adopted. Keywords Pure water, physicochemical and treatment

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