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Paper title
Comparative Study of Shelf Life of Some Brands of Bottled Water Sold in Oko

Paper author
Chukwu Adaugo

Author Email
[email protected]

Supply of clean, safe and hygienic drinking water is a health imperative. Five brands of bottle water were bought from open shops in Oko and examined for 3days (Day 1 Day5 and Day10). Three of the bottled water samples had PH which lies within the acceptable PH standard for drinking water which is 6.5 to 8.5 recommended by WHO. The five (5) bottled water samples examined in this study were all positive for the presumptive, confirmatory and complete test. The contaminants were found to be Staphylococcus aureus and Escherichia coli. The lowest Total bacteria count was for sample IV with 4.6 x 102cfu/ml. The Total bacteria count and Total coliform count for all the water samples increased after day 10 on the shelve and the lowest coliform count was 5.2 x 10 cfu/ml for sample IV and highest was 2.8 x 103 cfu/ml for Sample II. Sample IV had the least Total Bacteria count and Total Coliform count after 10 days in the shelve so can be said to have the best shelve life from this study.

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