The cypermethrin degrading bacteria was isolated from a pesticide contaminated soil(Agriculture field) by enrichment technique with the sole carbon source and energy. Morphological, physiological and biochemical characterization of the bacterium identified Pseudomonas species. Biodegradation of waste water containing cypermethrin at different concentrations like 25, 50,75 and 100 mg/l by Pseudomonas sp. has maximum reduction of COD at 89.60% and 26 % respectively. The Cypermethrin analysed by HPLC indicated that the isolated bacterium can be used to clean the contaminated pesticide waste water in the environment.