Umudike Journal of Engineering and Technology

Dumpsite leachate is a major contributor to groundwater quality degradation. The susceptibility of groundwater contamination around an active dumpsite in Rukpokwo was studied. The study correlated geoelectric and water quality parameters. Vertical Electric Sounding (VES) and laboratory analysis of chemical, heavy metals, and microbial constituents were employed. 3 VES points were examined while standard methods were used to analyze pH, electrical conductivity (EC), total hardness, chloride, nitrate, heavy metals, and total heterotrophic bacteria (THB). The results illustrate that groundwater is acidic within 150 m of the dumpsite. EC (20 - 46S/cm) and total hardness (11.6 – 16.4 mg/l) increased with proximity to the dumpsite. Heavy metal concentrations () remained within WHO acceptable limits except for chromium at 150 m. Microbial count exceeded WHO limits within 150 m of the dumpsite. Longitudinal conductance values ranged from 0.162 to 0.27m/Ω, indicating weak to moderate aquifer protective capacity, while transverse resistance values ranged from 9751.16 to 27157.95  indicating low to moderate EC, consistent with groundwater EC values. The results suggest leachate permeation and selective adsorption of the aquifer protective layer.  The study highlights the need for proper waste management practices and groundwater monitoring and treatment to safeguard public health.