Municipal Solid Waste (MSW) is the trash or garbage that is discarded day to day in a human settlement. According to the Municipal Solid Waste Management Rules, 2016:

“solid waste” means and includes solid or semi-solid domestic waste including sanitary waste, commercial waste, institutional waste, catering and market waste and other non-residential wastes, street sweepings, silt removed or collected from the surface drains, horticulture waste, construction and demolition waste and treated bio-medical waste excluding industrial hazardous waste, bio-medical waste and e-waste generated in an area under urban local body.

Based on the types of generators, MSW is classified into various categories. The categories are further elaborated on in the Table below.

WASTE GENERATORS CATEGORIES /TYPES OF WASTE
Domestic Household Waste-Kitchen, house cleaning, old papers, packing, bottles, crockery wares, furnishing materials, garden trimmings etc.,
Commercial Waste generated at business premises, shops, offices, markets, departmental stores(paper, packing material, spoiled, discarded goods)organic, inorganic, chemically reactive and hazardous waste
Institutional Schools, Colleges, Hospitals, large hotels and restaurants, markets selling vegetables, fruits, fish etc., community halls, religious places, function sites etc.,
Street Sweeping Unconcerned throwing, littering made by pedestrian traffic, vehicular traffic, stray animals, roadside tree leaves, rubbish from drain cleaning, debris etc.,
Industrial/Trade Waste generated through manufacturing and material processing.
Debris/Construction Comprises earth, brickbats, stones, wooden logs etc.,
Bio Medical Animal waste such as animal tissues, organs, body parts, carcasses, bleeding parts, fluid, blood, waste generated by veterinary hospitals, colleges, discharge from hospitals, animal houses and Microbiology/ biotechnology laboratories, Waste sharps viz., needles, syringes, scalpels, blades, glass etc. that may cause puncture and cuts. This includes both used and unused sharps etc.,
Hazardous Waste with properties that make it dangerous or potentially harmful to human health or environment. Waste listed in Hazardous waste management rules 1989 - batteries, cleaning fluids, pesticides etc.)
Sewage Sewage is the liquid waste containing some solids produced by humans which typically consists of washing water, faeces, urine, laundry waste and other material.

Solid Waste Management (SWM) is a science associated with the management of solid waste using the best principles and practices of public health, economics, engineering, conservation, aesthetics and other environmental conditions. It refers to a systematic process that comprises of solid waste segregation at source, primary collection, cleaning of streets and surface drains, secondary storage, transportation, processing and the disposal of solid waste at the facilities set up by the urban local body on their own or through an agency or an operator of a facility.