Waste disposal in urban areas are a problem due to the following reasons:

• Lack of dumping spaces, due to population density in certain urban areas.
• Financial constraints on part of the local municipal bodies
• Poor waste management policies
• Environmental problems that arise when disposing of certain types of wastes especially those from industrial areas.

For more relevant articles refer to the links given below:

• UPSC Environment and Ecology Questions
• International Union for Conservation of Nature (IUCN)
• UPSC Environment and Ecology