Physicochemical studies and bacteriological assay of Sachet Water samples marketed in Kogi state University Compound, Anyigba.

peter kimmy onoja, olalekan w salawu



Fifteen samples made of five (5)brands of sachet packaged water samples labelled as A,B,C,D and E commonly found in the Kogi State University,Anyigba were examined for bacteriological and physic-chemical properties to determine the potability if the sachet water are to be used in the school. Standard conventional methods were employed for the detection of coliforms and other bacteria. Physical examination for organoleptic qualitysuch as taste, color, odour,microscopic examination for sediments and other debris and/or bacteria, protozoa and fungal hyphae as well as chemical and biochemical analysis. Bacteriological examination of samples revealed the presence of the following pathogens: Yeast, staphylococcus species, streptococcus species, E,coli, Bacillus species, micrococcus species, pseudomonas species Actinomycetes, Klebsiell., Chemical analysis revealed the presence of metals ranging from lead (Pb), iron (Fe), and chromium (Cr). Absence of nickel, cadmium and copper was apparent from the study. Physical examination of samples showed a variable level of turbidity, colour, PH, hardness, acidity and alkalinity. The result also revealed variable level of taste but none had objectionable odour. In conclusion, bacteriological and physicochemical indices of contamination detected from majority of the samples are indications that sachet water available in the University environment do not meet, neither the NAFDAC (2004), SON (2003) nor WHO (2012), standard and so may not be suitable for drinking purposes.


Keywords: Sachet water, physicochemical, Biochemical and Bacteriological studies, organoleptic quality, coliform bacteria.

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