In this study, Very Low Frequency Electromagnetic Field (VLF-EM) method has been integrated with hydrogeochemical method to characterise the aquifers in the study area and also to determine the extent of groundwater pollution in the region.  For the VLF-EM, a total of 12 traverses were established in the W–E directions, with traverse lengths of 200 m (although one of the traverses was 360m) with regular station intervals of 20 m.  A total of 128 station positions were occupied for VLF-EM profiling using the Scintrex-EM equipment.  And for the Hydrogeochemical analyses, 12 water points (boreholes and wells) were sampled for physiochemical analyses.  Ultimately, the Inphase, Quadrature, Fraser Filter profiles and the Karous Hjelt pseudo sections from the VLF-EM survey of the area revealed high groundwater potential in the area.  The VLF-EM interpretation also shows that the soil and groundwater at shallow depth in some part of the area have been polluted.  This is in line with the results from the physicochemical analysis which revealed that the soil and groundwater quality in the region have been affected by oil spillage and improper disposal of untreated effluents from petroleum products.  Finally, from the results of Geophysical and Water Quality Analyses, the following recommendations are suggested among other things; a total overhaul of environmental procedures of the refinery in Rido should be embarked upon.  Also, there should be a clean-up  and remediation of the Rido ecosystem, plus a welfare/rehabilitation project of the host community-Bioremediation and Phyto-remediation should be employed.