Greywater in ecological sanitation is source separated from toilet systems, allowing for simpler treatment systems than conventional sewage treatment plants. Successful management of greywater includes both technical methods and user participation in running and maintaining the system. All parts of the system, from the point of origin to the final discharge, should be considered when planning. This paper talks about how to set up a greywater management system, as well as the vaious treatments, filters, applications and uses of greywater.