Bacteriological and Chemical study on different types of Drinking Water


The aim of this study is to evaluate the effects of the quality and bacteriological content of water on the health of consumer . Locally prepared bottled water was stored at room temperature for three months and undergone bacteriological examination monthly for three successive months . Household RO and tap waters also examined bacteriologically . pH ,EC, TDS , total hardness , minerals(Mg , Ca) and chlorides were determined in each type of water . Household RO water has given to male rats for two months and three animals were sacrificed at two weeks intervals. Liver , kidney and heart were removed and pathologically studied . It was found that bottled water was not sterile and contain low number of bacteria that naturally present or accedentaly introduced during processing . Household RO water showed pathological changes in sacrified animals studied .