Sanitary landfilling is one of the most widely used and scientifically managed methods of solid waste disposal. It involves the systematic placement of waste in layers, compaction to reduce volume, and covering with soil or other materials to minimize environmental hazards. The classification of sanitary landfilling based on the sources of solid waste is important because different waste sources have distinct physical, chemical, and biological characteristics. Proper classification helps in designing appropriate landfill structures, selecting suitable liners and leachate treatment systems, and preventing risks to human health and the environment. Solid waste is generally generated from municipal, industrial, agricultural, biomedical, construction, commercial, and hazardous sources, and each category requires specific landfill considerations. Municipal solid waste is one of the most common sources managed through sanitary landfilling. It includes household garbage, food waste, paper, plastics, textiles, and yard trimmings collected from residential areas. Municipal waste landfills are designed with proper liners, leachate collection systems, and gas management facilities because organic waste decomposes and produces methane and carbon dioxide. These landfills are usually located away from residential zones and water bodies to