Abstract
Study was carried out in Ifewara, Osun state with an objective of evaluating the quality and suitability of local groundwater for domestic purposes. Twenty six groundwater samples from hand dug wells and one borehole sample and were subjected to physicochemical analysis. Results from the study shows that the cationic and anionic concentrations vary as follows: Na+(0.2-3.5 mg/l), K+ (0.1-15.1 mg/l) Ca2+ (16-96 mg/l), HCO3 - (16-176 mg/l), Mg2+ (3- 104 mg/l), NO3 -(0.18-11.43 mg/l), SO4 2-,(1.24-21.3 mg/l), Cl- (2-52 mg/l), and PO4(0.01-0.75 mg/l).The study also shows that the water is fresh with TDS value (avg. 93.8 mg/l) and a neutral pH (avg. 6.8) within the permissible range (6.5-8.5).Hydrogeochemical evaluation of the groundwater reveals that it is predominantly of the CaHCO3 type while others belong to the Mixed CaMgCl type. The water chemistry was observed to have been influenced by the dilution and weathering processes at shallow depth.KEYWORDS: Groundwater quality, fresh water, hydrogeochemical evaluation,
Highlights
Sustainable provision of portable and adequate water resource for immediate and future use are of regional to global concern
Fresh water resource in most communities is under threat due to immense natural and anthropogenic influences as a result of factors such as overpopulation and activities which are capable of producing run-offs and leachate which could infiltrate into and pollute groundwater formation
The aim of this study is to investigate the water quality and hydrogeochemical process of water resource in Ifewara
Summary
Sustainable provision of portable and adequate water resource for immediate and future use are of regional to global concern. The quality of water available for the population is often a function of natural as well as anthropogenic activities (Sajjad, et al, 1998). Fresh water resource in most communities is under threat due to immense natural and anthropogenic influences as a result of factors such as overpopulation and activities (including agriculture, indiscriminate refuse disposal and use of septic tanks, soak away and latrines) which are capable of producing run-offs and leachate which could infiltrate into and pollute groundwater formation.
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