Q.Discuss the public health and environmental hazards that arise when municipal solid waste is not properly collected, segregated and disposed of.

When municipal solid waste is not properly collected, segregated and disposed of, several serious hazards result. Contaminated liquid (leachate) from decomposing waste can seep into the ground and pollute groundwater and nearby surface water bodies used for drinking or irrigation. Exposed, uncollected waste attracts disease-carrying pests -- flies, rodents and stray animals -- creating a direct public health hazard and a route for the spread of infectious disease. Decomposing biodegradable waste in an uncontrolled setting releases methane, a potent greenhouse gas that also poses a fire risk if it accumulates. Beyond these direct hazards, unmanaged waste causes foul odours and a generally degraded environment that reduces the quality of life for pe …

Group the hazards by type -- water pollution, disease/public health, air/greenhouse gas, and general quality-of-life -- so the answer covers …

Do not limit the answer to only 'bad smell' or only 'it looks ugly' -- the serious hazards (groundwater contamination, disease s …