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Study of the underground water of Monrovia and its environs for potability

JA Kolawole
FG Miller
S Mulbah


Access to potable water, in Monrovia (Liberia) and environ is majorly through hand-pump-fitted boreholes (HPFB). The study to evaluate the potability of these waters with reference to safety involved thirty three communities of Monrovia and its environs from which thirty four samples of drinking water was obtained from hand-pump-fitted boreholes. The samples were stored at 4˚C and later analyzed. Total dissolved solids (TDS), conductivity and pH were three physical parameters analyzed along with the concentration for twelve heavy metals (arsenic, cobalt, cadmium, lead, silver, potassium, manganese, sodium, iron, magnesium, calcium and aluminum) using Atomic Absorption Spectrophotometry. All the samples complied with WHO specification for TDS and pH while 97.05% of the samples complied with conductivity requirement. The values of sodium, potassium, calcium, manganese, silver and cadmium were within the WHO specification for drinking water while 58.83%, 97.05%, and 88.24% of samples complied for magnesium, aluminium and lead respectively. All the samples except two (5.89%) complied with arsenic standard.

Keywords: Arsenic; Water quality; Heavy metals; Monrovia; Liberia.

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eISSN: 0189-8442