Abstract
Life is a water dependent process, however, pristine water for the consumption of the living organisms remains a big challenge in many countries. In Zanzibar, groundwater is a major source for drinking and other domestic purposes. However, the quality of water sources seems to deteriorate mainly due to anthropogenic activities. Therefore, assessment of ground water quality is extremely important to ascertain its safety for human consumption. In June 2014, water samples from shallow wells were collected from two different areas (Kilima-hewa and Mtoni) in Zanzibar Island.
Highlights
Groundwater is the main source of water in Zanzibar Island, it is necessary for different domestic purposes
Materials and Methods In June 2014, water samples were collected from shallow wells of two areas of Zanzibar Island namely Kilima-hewa and Mtoni, in which five water samples from each area were taken
The lowest concentration of calcium was recorded from Kilima-hewa area, while the highest level of calcium was measured for sample collected from Mtoni area. (Table 2 & Figure 1)
Summary
Groundwater is the main source of water in Zanzibar Island, it is necessary for different domestic purposes. The potential nonpoint and point sources of groundwater pollution depends on factors such the depth and pumping rate of the well, the size of the source area and local hydro-geologic conditions. Animal waste, municipal landfill leachate is among the potential sources which cause groundwater contamination [1]. Due to long-range transport process and the driving force of atmospheric precipitation, contaminants can migrate to the groundwater sources. Inside the aquifers, they can still be transported horizontally through permeable soils to very remote areas where they can result in to serious and unexpected heath effects
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