Abstract: In this paper, greywater treatment methods has been studied, which include physiochemical, biological, and advanced oxidation process (AOP) for greywater treatment technologies. These are the technologies that are utilized to eliminate organic pollutants and surfactants that are found in greywater. Comparison of several treatment methods for removing pollutants from greywater will be the primary focus of this research. Comparisons will be made between each technique in terms of its positives and negativesaspects , as well as its potential for use in the development of greywater treatment technologies.