| dc.description.abstract | This paper presents the findings of a study carried out to investigate the efficiency of selected
common water filters in the removal of Escherichia coli, organic matter and fluoride. Additionally,
the Total Suspended Solids, Turbidity and colour were also considered for assessing the
performance of the filters in ensuring safe water provision. The results showed that various filters
performed differently at particular retention times. Removal of Escherichia coli, was found to be
100%, 75%, 96%, 96.5, 98.5%forbio-sand, slow sand, ceramic, bone char and membrane purifier
respectively. Organic matter removal was found to be 47%, 43%, 53%, 43.4% for bio-sand, slow
sand, ceramic and membrane purifier respectively, while, fluoride removal was found to be 95.5%
for bone char filter. Furthermore, filters were also assessed in terms of media availability, buying
costs, operation, benefits/ effectiveness towards major pollutants, and drawbacks.
The study concluded that filters currently present in the market especially in Arusha are effective
towards specific pollutants. To remove multiple pollutants, an integrated filter would be needed
for optimized performance | en_US |
