Quantification of groundwater exploitation and assessment of water quality risk perception in the Dar es salaam quaternary aquifer, Tanzania
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
This study quantified groundwater exploitation and assessed water quality risk perception
in the Dar es Salaam quaternary aquifer through a socio-economic survey. Annual total groundwater
exploitation was estimated, using the daily per capita consumption of groundwater derived from
the household survey. A logistic regression analysis was performed to ascertain the influence of
sex, marital status, education level, employment, income, and cost of water on groundwater quality
risk perception. It was revealed that most residents of Dar es Salaam use groundwater as a main
source of water supply. The results of this study further showed that 78% consider groundwater as a
reliable source. Averting strategies for insu cient quantity of groundwater consist of minimizing less
necessary water uses, while for poor quality, buying bottled water and water treatment by boiling and
using chemicals. The chance for water quality risk perception is 0.205 times greater for married than
unmarried household heads, and it is 623 times higher for employed versus unemployed household
heads. To get an overall view of the importance of groundwater for domestic needs in Dar es Salaam
it is imperative to combine a time series data of groundwater and surface water exploitation.
Description
Journal article
Keywords
Household survey, Groundwater quantity, Groundwater importance, Groundwater quality awareness, Quaternary aquifer