Bacteriological quality of water used for ice making in some parts of Kano metropolis, Nigeria

Abstract

A study was carried out on the bacterial counts of water used for commercial production of ice. Total of twenty samples (ten raw water samples and ten ice samples) were collected at random from ten different locations, and subjected to aerobic mesophilic bacterial and coliform counts according to FAO/WHO standard methods for the examination of water and wastewater. The results showed that the raw water had mean aerobic plate count of 2.05 x 10 3 cfu/ml, coliform MPN ranged from <2 to 110coliforms/ml and two samples yielded E. coli. The ice had mean aerobic plate count of 7.90 x 10 3 cfu/ml and coliform MPN ranged from <2 to 130 coliforms/ml and four samples yielded E. coli. It is recommended based on the findings that the commercial ice makers should observe hygienic practices in all their operations, so as to reduce the chances of contamination and possible infection by the microbial contaminants.

Physico-chemical and bacteriological quality of drinking water of different sources, Jimma zone, Southwest Ethiopia

“…The mean AMC of tap water (3.05 log CFU/ml) and protected well water (3.53 log CFU/ml) samples documented in this study, with about 70 % of the water samples having aerobic AMCs greater than 3 log CFU/ml, was in agreement with the earlier report from Nigeria [ 20 ]. Although the observed contamination level with regards to aerobic mesophilic bacteria was not significantly high, their very detection by itself is an indication of high vulnerability of the water sources to microbial contamination, including potential pathogens.…”