Landfill at Antang Tamangapa, Makassar is still an active landfill nowadays. It was constructed in 1995 as an open dumping landfill system. However, due to the huge volume of waste disposal from time to time the system is not used anymore. Volume of disposal in Antang landfill until 2014 reachs 13640 M3/day. This condition become an environmental problem that must be handled. The aim of this study is to figure out the influence of environmental and groundwater system in Tamangapa area. Geoelectric method with Wenner’s and Schlumberger’s configurations is applied and furthermore in RES2DINV 5.54 program in order to analyze in 3- D view. Chemical analysis is used to understand the distribution and quality of groundwater. Groundwater flow analysis shows that the flow direction is Northwest to Southwest. The leachate accumulation is found at the depth of 2 to 8 m. The chemical composition of leachate is nitrate (NO3-N), BOD, COD, and sulfate (SO4).
