Plastic Pollution: Sources, Microplastics, Plastic Waste Management Rules, Single-Use Plastic Ban, EPR and the Global Plastics Treaty (UPSC Notes + PYQs)

Why plastic is a problem

Global plastic use reached about 460 million tonnes in 2019, and only about 9% was recycled; the rest was burnt, landfilled or leaked (OECD Global Plastics Outlook, 2022). Plastic breaks into microplastics (under 5 mm) and nanoplastics found in seas, soil, salt, drinking water and human blood. Burning releases dioxins. Marine animals choke or starve; turtles mistake bags for jellyfish. Plastic also adds to climate change: most is made from fossil fuels.

Hidden plastics

Plastic is not only in bags and bottles. Chewing gum base, cigarette filters (cellulose acetate), car tyres, eyeglass lenses, tea bags, synthetic clothes (which shed microfibres in washing) and cosmetics with microbeads all contain plastic, as two recent Prelims questions (2024, 2025) tested.

India’s rules

• Plastic Waste Management Rules, 2016 (replacing the 2011 rules): duties for local bodies, gram panchayats, waste generators and producers.
• 2021 amendment: ban on 19 identified single-use plastic items (earbuds with plastic sticks, plastic flags, candy and ice-cream sticks, thermocol décor, plates, cups, cutlery, straws, wrapping films for sweet boxes, PVC banners under 100 micron and others) from 1 July 2022; carry bags to be at least 75 micron from September 2021 and 120 micron from 31 December 2022.
• EPR Guidelines, 2022: brand owners, producers and importers must collect and recycle set shares of their packaging, with tradeable EPR certificates on a CPCB portal, minimum recycled content and reuse targets.
• 2024 amendment: rules on compostable and biodegradable plastics and registration of manufacturers.
• Swachh Bharat Mission-Urban 2.0 for garbage-free cities; plastic in road building (Indian Roads Congress guidelines).

Data snapshot

The global treaty talks

In March 2022 the UN Environment Assembly (UNEA-5.2) agreed to negotiate a legally binding treaty “to end plastic pollution” covering the full life cycle. The Intergovernmental Negotiating Committee met five times; the session at Busan (November-December 2024) and its resumed session at Geneva (August 2025) ended without agreement. A “high ambition” group wanted caps on primary plastic production; oil-producing countries and others, including India, preferred a focus on waste management and national choices. India has said any treaty must respect national circumstances and provide finance and technology.

Issues

• Weak enforcement of the SUP ban in markets and small shops.
• Multi-layered packaging (chips, sachets) is hard to recycle.
• Informal waste pickers do most recycling without protection.
• Fake EPR certificates were detected on the CPCB portal.
• Alternatives (paper, cloth, compostables) cost more.

Way forward

Strict EPR audits, design for recycling, deposit-return schemes for bottles, recognising and protecting waste pickers (Pune’s SWaCH model), source segregation, cheaper alternatives through MSME support, and behaviour change campaigns. Some States have shown results: Sikkim banned packaged drinking water in government functions and Styrofoam products years ago.

Life cycle: where plastic leaks

Plastic pollution is not only a litter problem; it can be traced through the whole life of a product. About 99% of plastics are made from fossil fuels. Production releases greenhouse gases; additives such as phthalates and bisphenol A (BPA) are mixed in to make plastic soft, coloured or fire-resistant, and some of them disturb hormones. Plastics used in packaging have the shortest lives, often a single use. After use, waste is collected, sorted and recycled only if segregation works; much of it is burnt in the open or dumped. Rivers carry plastic to the sea, where sunlight and waves break it into ever smaller pieces. Each stage offers a place to act: less production, safer design, reuse, better collection and clean-up. This “full life cycle” approach is what the UNEA-5.2 mandate asked the treaty talks to cover.

Microplastics and health

Microplastics have now been found in human blood, lungs, placenta and breast milk. A 2024 study in the New England Journal of Medicine found microplastics and nanoplastics in fatty plaque in the neck arteries of patients, and those who had them were at higher risk of heart attack, stroke or death over the following three years. Such studies show association, not yet proof of cause, but they have shifted the debate from wildlife to human health. Tyre wear and synthetic textiles are among the biggest sources of microplastics in the environment, which is why the problem cannot be solved by banning bags alone.

Global milestones

• Basel Convention plastic amendments (adopted 2019, in force 2021): exports of mixed or contaminated plastic waste need the prior informed consent of the importing country.
• UNEA-4 (2019): India piloted a resolution on single-use plastic pollution.
• UNEA-5.2 (March 2022): mandate for a binding treaty.
• INC-5 (Busan, 2024) and INC-5.2 (Geneva, August 2025): no agreement.
• MARPOL Annex V already bans the dumping of plastics from ships.

In India, the 2024 amendment to the Plastic Waste Management Rules defined compostable and biodegradable plastics and required makers of such products to get certification and to label them; Uttar Pradesh had banned polythene carry bags from 15 July 2018, ahead of the national ban.

PYQ trend

Prelims 2024 (chewing gum) and 2025 (cigarette butts, lenses, tyres) asked hidden plastics. Mains GS-III 2026 asked about solid waste management challenges and policy. Expect questions on EPR and the treaty.

Plastic Pollution: UPSC angle

Plastic Pollution UPSC PYQs (Prelims)

Questions UPSC has actually asked, from the official papers. Pick an option to check yourself.

Mains PYQs on this topic

Questions from the official UPSC Mains papers (2023-2026 in the Battle IAS Mains bank), newest first. Each links to a model answer.

1. UPSC Mains 2026 · GS Paper III · Q17 · 15 marks

   What are the challenges to solid waste management in India? Discuss the governmental policy framework on solid waste management. Discuss the success/failure cases of Delhi and Indore cities highlighting the salient feature of their solid waste management initiatives.

   Model answer and approach

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