International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 9, September 2017

International Journal of Science and Technology

Groundwater Quality Assessment in Akoko South East Area of Ondo State, Nigeria

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Author Afuye, G. G., Oloruntade, A. J., Mogaji, K. O.
Volume No. 5
Issue No. 9
Issue Date September 01, 2015
Publishing Date September 01, 2015
Keywords Groundwater quality, shallow well, contamination, coliform, treatment


Water samples from 11 wells representing one shallow well each in the eleven electoral wards of Akoko South East Local Government Area (AKSE) of Ondo State, Nigeria were collected to assess the quality of groundwater in the area. During sample collection, well physical conditions such as diameter, presence of lining, apron and cap/cover, and proximity to source of pollution (e.g. septic tank), were observed. The samples were collected the same day and thereafter taken to the laboratory for physico-chemical and bacteriological analyses. The results showed that many of the wells were neither properly lined nor provided with cover/cap thus exposing them to both runoff and base-flow contamination from nearby pollution sources. Physico-chemical parameters of the samples were within acceptable limits for drinking purposes, nevertheless, the levels of turbidity, EC and TDS, hardness and Fe+ in some samples in the area were high. However, the presence of coliforms in all the samples generally suggested microbial contamination which rendered their consumption without treatment unsafe. Thus, the paper recommended amongst others, strict adherence to standard methods of well construction, good sanitary measures, treatment of water before consumption and good physical planning in the local government area.

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