Assessment of microbiological quality of sachet-packaged drinking water in Western Nigeria and its public health significance.

Abstract:

OBJECTIVE:To assess the microbiological quality of sachet-packaged drinking water in Western Nigeria and its impact on public health. STUDY DESIGN:Cross-sectional microbiological testing. METHODS:Ninety-two sachet-packaged water samples were analysed for microbiological and metal qualities. Total bacterial and coliform counts were determined, and the presence of Escherichia coli, an important water quality indicator, was tested. The level of conformity of the water processors with the guidelines of Nigeria's quality regulatory agency was also determined. RESULTS:Varying levels of microbial contamination were recorded in samples from the different sampling locations. The total bacteria count ranged between 2.86 and 3.45log colony-forming units (cfu)/ml. The highest coliform count recorded was 1.62log cfu/ml. Faecal coliform E. coli was detected in one sample from Oke-Iho and one sample from Okaka, representing 2.2% of total samples. Lead and manganese were not found in any of the samples. However, iron was detected and the highest iron concentration (0.10mg/l) was detected in samples from Ikorodu. The bacteria that were identified from the water samples included E. coli, Pseudomonas aeruginosa, Enterobacter aerogenes, Klebsiella sp., Proteus vulgaris, Alcaligenes faecalis, Bacillus cereus, Staphylococcus aureus, Streptococcus lactis, Aeromonas sp. and Micrococcus luteum. Many of the water processors did not comply with the guidelines of the quality regulatory agency. CONCLUSIONS:Some of the sachet-packaged samples of drinking water were of poor quality. The results indicate a need for Nigeria's quality regulatory agency to take appropriate measures in safeguarding public health.

journal_name

Public Health

journal_title

Public health

authors

Olaoye OA,Onilude AA

doi

10.1016/j.puhe.2009.09.015

subject

Has Abstract

pub_date

2009-11-01 00:00:00

pages

729-34

issue

11

eissn

0033-3506

issn

1476-5616

pii

S0033-3506(09)00270-4

journal_volume

123

pub_type

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