Waste is slowly poisoning the earth. The waste especially in developing countries, which manufacture and consume more products and resources, is leading to a lot of hazards. Chemicals, metals, pesticides, domestic waste, sewage and agricultural wastes are dumped into the environment. Solid and liquid wastes are dumped in the landfills and released into rivers and seas. Bhopal gas tragedy is one of the world's most disastrous environmental tragedies. In fact, between 1980 and 1990, about 15 gas releases took place in the USA which were more toxic and acute than Bhopal gas. Since none of them were in a densely populated area, like Bhopal, they did not cause as much death and loss. However, the chances for disaster are always there.

There is need to identify the hazards of waste and understand the nuances of proper waste management, it is important to identify how waste is generated and the various sources of waste. Research shows that in India waste generation is expected to increase to a mammoth figure of 300 million by 2047 i.e., from the present 500 grams to 945 grams per capita. The estimated land requirement for disposal of such huge quantum of waste would be 169.6 sq. kms. as compared to 20.2 sq. kms. in 1997. This reveals a shocking scenario. Against this background, we need to understand the role, of the individual, community as well as government and private bodies in the process of waste management. The three R's concept in the management of waste must be implemented.