Electronic waste or e-waste is one of the fast growing problems of the world. E-waste consists of variety of components, containing toxic substances which lead to environment and health hazards if not handled properly. It is important to find out what is the main source of this e-waste with the help of GIS and how we can minimize the e-wastage through green technology. This paper provides a concise overview of Mumbai's current e-waste scenario, namely to locate the source of e-wastage, environmental and health hazards, green technology methods to reduce the e-wastage.