2018 · GS Paper 3 · Q6 · 10 marks

What are the impediments in disposing the huge quantities of discarded solid wastes which are continuously being generated? How do we remove safely the toxic wastes that have been accumulating in our habitable environment?

In short

Solid waste disposal is blocked by unsegregated waste, weak and underfunded local bodies, scarce landfill land and mismatched technology, while accumulated toxic waste needs polluter-funded containment, treatment and remediation. About 337 tonnes of Union Carbide waste were moved from Bhopal to the Pithampur facility in 2025 and incinerated.

Model answer

Ghissu Editorial · Verified 4 Oct 2026

Introduction
Indian cities generate nearly 1,62,000 tonnes of municipal waste a day, and 2,479 dumpsites hold about 25 crore tonnes of legacy waste (PIB, 2026), with toxic residues inside habitable areas.
Impediments in Disposing Solid Waste
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No segregation

Mixed wet, dry and hazardous waste cannot be composted or recycled, so it ends up in landfills despite the source segregation mandate of the Solid Waste Management Rules, 2016.

•

Weak local bodies

The CAG found that only 3 of 45 test-checked ULBs in Uttar Pradesh had waste plans, and that GHMC paid ₹313.20 crore for dry waste never processed.

•

Land and technology

No land for sanitary landfills turns dumps into hazards like Ghazipur, which partly collapsed in 2017, while waste-to-energy plants fail on wet, low-calorific waste and informal waste pickers stay outside the system.

Removing Accumulated Toxic Waste Safely
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Polluter pays

In Indian Council for Enviro-Legal Action (1996), the Bichhri case, the Supreme Court made polluting units fund remediation of the toxic sludge they left behind.

•

Engineered destruction

About 337 tonnes of Union Carbide waste were moved from Bhopal to the Pithampur facility in 2025 and incinerated under court supervision.

•

Biological and biomining routes

Bioremediation treats contaminated soil cheaply, and Indore's Devguradia dumpsite was biomined and reclaimed, with 459 dumpsites remediated in 2025.

This model answer is indicative and the model can make mistakes; please verify key facts independently.

Hand-drawn diagram: Why Solid Waste Piles Up. Why Solid Waste Piles Up. Diagram (fishbone): Why Solid Waste Piles Up; Disposal failure; No segregation; Weak municipal capacity; No land for landfills; Mismatched technology; Informal pickers excluded
Diagram: Why Solid Waste Piles Up
Hand-drawn diagram: Safe Removal of Toxic Waste. Safe Removal of Toxic Waste. Flow: Map contaminated site → Contain and isolate → Treat on site → Destroy at TSDF → Monitor groundwater
Diagram: Safe Removal of Toxic Waste

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Question from the official UPSC Civil Services (Main) Examination 2018 paper. Answer written by Ghissu's engine and checked against our editorial standards. Found an error? Tell us and we correct it within 48 hours.

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