Abstract: This study focused on the impacts of leachate from dumpsite on groundwater in Omuooke-Ekiti, Southwest Nigeria. Twelve groundwater samples collected close and far to the dumpsite were subjected to cations determination employing Atomic Absorption Spectrometer while SO42-, Cl- and NO3- were evaluated using Turbidimetric, Mohr’s and Spectrophotometer methods respectively. Portable meter was used to measure in-situ parameters. The pH (5.00 - 6.97) signified acidic groundwater; EC (µs/cm) (480 – 6980) indicated that 33% of the groundwater samples had concentrations above approved standard for drinking water.