Minimalist IAS
2018 GS Paper III

UPSC CSE (Main) 2018 · GS Paper III · Question 6

What are the impediments in disposing the huge quantities of discarded solid wastes which are continuously…

Syllabus line: Conservation, pollution & EIA — “Conservation, environmental pollution and degradation, environmental impact assessment.”

GS Paper III 2018 · Q6

10 marks · 150 words Conservation, pollution & EIA

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?

Approach · directive: “what / how”

What it asks · State the obstacles to disposing of ever-growing solid waste, and describe safe ways to remove the toxic and hazardous waste that has built up around us.

The question has 2 parts — answer each

  1. What: the impediments to disposing of the huge and growing quantities of solid waste
  2. How: safe ways to remove the toxic wastes that have accumulated in the habitable environment

Open with · Cities generate waste faster than they can collect, segregate and treat it, and toxic waste adds a threat to groundwater, soil and health.

Cover

  • Impediments: no segregation at source, so mixed waste cannot be composted or recycled; weak collection and transport; and cities running short of land for sanitary landfills.
  • Institutional gaps: weak finances of urban local bodies, poor enforcement of the rules, low technology, informal waste-pickers left out, and local resistance to plants near homes.
  • Costs of neglect: open dumps and burning cause leachate, methane, fires and air pollution, and legacy dumps hold years of waste.
  • Solid waste solutions: segregation at source (four streams under the 2026 rules), decentralised composting and biomethanation, recycling with waste-pickers included, and engineered landfills only for residue.
  • Polluter pays: user fees, extended producer responsibility for plastics and packaging, and environmental compensation for violations.
  • Toxic waste: track hazardous, biomedical and e-waste through manifests under the 2016 rules; treat it at authorised facilities (secure landfills, incineration, co-processing); take back batteries and electronics.
  • Clean-up and control: remediation of contaminated sites, monitoring by pollution control boards, and the Basel Convention to curb the trade in hazardous waste.

Close with · The remedy is to reduce, segregate, recycle and treat waste close to its source, with strict handling of hazardous waste and public participation; landfill should be the last resort.

Add value (verified)

Question: UPSC's CS (Main) 2018, GS Paper III — paper ↗. Approach: Minimalist IAS, checked 30 Sept 2026 (how we verify) — UPSC publishes no model answers. ·

Model answer · 234 words (UPSC limit 150) · Minimalist IAS

Indian cities generate waste faster than they collect, segregate and treat it; open dumps leak leachate and methane, while hazardous, biomedical and electronic waste adds toxins to soil, water and air.

Impediments to disposal

  • No segregation at source: mixed waste can be neither composted nor recycled, so it ends up in dumps.
  • Weak collection and transport, no land left for sanitary landfills, and residents who resist treatment plants near their homes.
  • Institutional gaps: cash-strapped urban local bodies, poor enforcement of the Solid Waste Management Rules, 2016, and informal waste-pickers left outside the system.
  • Legacy dumps hold years of waste; open burning and leachate poison air and groundwater.

Safe removal of toxic waste

  • Track and treat: hazardous, biomedical and e-waste move under manifests to authorised facilities under the 2016 rules, through secure landfills, incineration and co-processing; producers take back batteries and electronics.
  • Polluter pays: extended producer responsibility for plastics and packaging, user fees and environmental compensation for violators.
  • Clean-up and control: remediation of legacy dumps and contaminated sites, monitoring by pollution control boards, and the Basel Convention to curb hazardous-waste imports.
  • Decentralised handling: segregation at source, composting and biomethanation, recycling with waste-pickers included, and landfills only for residue (since then, the SWM Rules, 2026 mandate four-stream segregation).

Reduce, segregate and treat waste near its source, and handle hazardous waste under strict control with public participation; the landfill must be the last resort, not the first.

Written by Minimalist IAS from facts checked at source (how we verify) — a little fuller than exam length, so every part of the question is covered; in the hall, keep the structure and trim the detail. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.

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