Water quality degradation is one of the major environmental problems in Addis Ababa andrnmunicipal solid waste disposal sites can be sources of groundwater contamination as leachaternmay infiltrate and join the aquifer. In Addis Ababa, there is currently one landfill site at Repirnin the South West of the city located 13kms away from the city center. The Repi landfill siternwas commissioned more than 40 years ago and the only factors that were considered inrnselecting this site were hauling distance and availability of the land. Geophysical surveys,rninvolving 2-D resistivity imaging and vertical electrical sounding were conducted around thernsolid waste landfill for a hydro-geophysical assessment of contamination of groundwater.rnIRIS SYSCAL R1 Plus switch-72 multinode imaging unit was used to acquire data both forrnthe imaging and VES survey. In general 3 traverses for imaging and 3 VES measurementrnpoints along a profile were used for the study.rnThe correlation between the 2-D resistivity imaging and the VES data is outstanding. Thernresults clearly indicate that the underlying layers in this area around the landfill are weakrnincapable of preventing downward movement of the leachate from the landfill to therngroundwater. Hence, the groundwater in this area may have been contaminated. Therefore,rnthe usage of the landfill which is without geologically impermeable ground must berndiscouraged. It is also strongly recommended that a thorough study of any site must be donernbefore any operation so as to know whether the aquifer is naturally sealed or not.rnKeywords: 2-D resistivity imaging, VES, solid waste landfill, lecahate, chemical waste andrngroundwater.