Peter Oluwanishola Mafimisebi, Grace Kikelomo Martins

The study area occurs within the Precambrian basement complex composed of quartzite, quartz-schist, biotite-andbiotite-hornblende-gneiss (migmatite) as the main rock units. Physiochemical assessment of shallow groundwater in Ijokodo area was carried out to determine its suitability for drinking and irrigation purposes. Thirteen (13) groundwater samples were collected and subjected field measurements of physical parameters followed by chemical analyses methods. The results of the physicochemical and the hydrochemical studies show that the Ijokodo stream is slightly alkaline. The trace metals show varied average results in the streams samples of the study area. Results of AF (<1) show that the Ijokodo streams have not been heavily contaminated. The estimated results of geo-accumulation (<0) also confirmed this. The computed values of SAR on the average indicated that the water phase of the Ijokodo streams contain a slight low sodium hazard of 9.5 and this may not be potentially hazardous for irrigation practices. The result of EC, TDS, MR, Kelly’s ratio shows that the water samples are good for irrigation The Gibb’s diagrams suggest that chemical weathering of the rock forming minerals is the main process which contributes the ions concentration in the water while, the Wilcox diagram result reveals that all water samples are within the area of excellent to good.