Science & Technology
Environmental Pollution and Waste Management
Solid Waste Management
SWM Rules 2026 (four-stream segregation), plastic, e-waste, bio-medical, battery and C&D waste rules, Swachh Bharat, and Chhattisgarh's Ambikapur SLRM model.
Prerequisites
- Soil and Noise Pollution, for how dumped waste poisons soil and water.
- Urban Local Bodies in Chhattisgarh, because sanitation and waste are municipal functions.
- Urban Local Bodies and the 74th Amendment, for the Twelfth Schedule, which lists solid waste management.
The Hook: The Town That Closed Its Dump
Connect
Early every morning in Ambikapur, the divisional headquarters of Surguja, women in uniform push carts from door to door, collecting wet and dry waste separately. They take it to small neighbourhood centres, sort it into dozens of categories and sell what can be recycled. Little is left for a dump. These women, known as “swachhata didis” (स्वच्छता दीदी), turned a small hill town into a national model, and in 2019 it opened India’s first “Garbage Cafe”, where plastic waste could be exchanged for a meal.
Meanwhile, the mountains of waste in many big Indian cities keep growing and sometimes catch fire. What do the rules require, what technologies exist, and why did Ambikapur succeed where others failed?
Why it matters: Prelims asks about the waste rules (which rule covers what, colour codes, thresholds), processing methods and Swachh Bharat. Since 1 April 2026, India has had new Solid Waste Management Rules, a near-certain current-affairs question. Mains asks about urban waste management and models like Ambikapur and Indore.
Types of Waste and the Rule That Governs Each
All these rules are made under the Environment (Protection) Act, 1986. Status as of October 2026:
| Waste | Rules in force | Key features |
|---|---|---|
| Municipal solid waste (ठोस अपशिष्ट) | Solid Waste Management Rules, 2026 (in force 1 April 2026; superseded the SWM Rules, 2016) | Four-stream segregation at source; bulk generator responsibility; landfill only for residual waste (details below) |
| Plastic waste | Plastic Waste Management Rules, 2016 (amended repeatedly, including 2021, 2022 and 2025) | Ban on identified single-use plastic items; carry-bag thickness; Extended Producer Responsibility (EPR) |
| E-waste | E-Waste (Management) Rules, 2022 (in force 1 April 2023) | EPR with recycling targets for producers via a CPCB portal; covers over 100 categories of equipment, including solar panels |
| Batteries | Battery Waste Management Rules, 2022 (August 2022) | EPR for all battery types, including electric-vehicle and industrial batteries; replaced the 2001 rules that covered only lead-acid batteries |
| Bio-medical waste | Bio-Medical Waste Management Rules, 2016 (as amended, most recently 2026) | Colour-coded segregation; common treatment facilities |
| Construction and demolition (C&D) waste | Environment (Construction and Demolition) Waste Management Rules, 2025 (in force 1 April 2026; superseded the 2016 rules) | EPR for builders of projects with built-up area of 20,000 m² or more; targets for using recycled C&D material |
| Hazardous industrial waste | Hazardous and Other Wastes (Management and Transboundary Movement) Rules, 2016 | Authorisation, safe storage and disposal; import and export controls in line with the Basel Convention |
The Solid Waste Management Rules, 2026
Notified by the Ministry of Environment, Forest and Climate Change in January 2026, in force from 1 April 2026, applying to both urban and rural local bodies.
Four-stream segregation at source
| Stream | Examples | Where it goes |
|---|---|---|
| Wet waste | Kitchen waste, food leftovers, fruit and vegetable peels | Composting or biomethanation, preferably close to the source |
| Dry waste | Plastic, paper, metal, glass | Material Recovery Facilities (MRFs) for sorting and recycling |
| Sanitary waste | Diapers, sanitary napkins | Wrapped securely and stored separately |
| Special care waste | Used bulbs and tubelights, batteries, expired medicines | Handed only to authorised agencies or designated collection centres |
Other key provisions
- Bulk waste generators (BWGs): entities with floor area of 20,000 m² or more, or water use of 40,000 litres a day or more, or generating more than 100 kg of waste a day. They must process their wet waste on site, or obtain an Extended Bulk Waste Generator Responsibility (EBWGR) certificate where on-site processing is not feasible.
- Polluter pays: penalties and environmental compensation for non-compliance, including higher fees for dumping unsegregated waste.
- Landfill as the last resort: only non-recyclable, non-energy-recoverable and inert waste may be landfilled.
- Refuse-derived fuel (RDF): industries such as cement plants and waste-to-energy plants must raise their use of RDF in place of solid fuel, from 5% to 15% over six years.
- Legacy waste: time-bound biomining and bioremediation of old dumpsites, with periodic reporting.
- Hilly areas and islands: local bodies may levy a user fee on tourists and regulate tourist inflow according to waste-handling capacity.
- Monitoring: a centralised online portal to track waste; annual audits by State Pollution Control Boards, monitored by the District Collector.
2016 vs 2026 in one line
The 2016 Rules (which had replaced the Municipal Solid Waste Rules, 2000) required three-stream segregation: biodegradable, non-biodegradable and domestic hazardous. The 2026 Rules split this into four streams (adding sanitary waste as a separate stream), tighten bulk-generator responsibility through EBWGR, push RDF, and add digital tracking.
The Waste Hierarchy
The best option is at the top; landfill is the last resort.
graph TD
A["1. Refuse / Reduce
do not create waste"] --> B["2. Reuse
use again as it is"]
B --> C["3. Recycle
make new products
(compost counts here)"]
C --> D["4. Recover energy
RDF, biogas, waste-to-energy"]
D --> E["5. Dispose
sanitary landfill: residual only"]This is the logic of the circular economy: keep materials in use and design waste out of the system.
Processing and Disposal Methods
| Method | How it works | Best for | Concern |
|---|---|---|---|
| Composting | Aerobic decomposition of organic matter by microbes | Wet waste | Needs good segregation |
| Vermicomposting | Earthworms (commonly Eisenia fetida, the red wiggler) convert organic waste into vermicompost | Kitchen and farm waste | Slower; needs moisture and shade |
| Biomethanation | Anaerobic digestion producing biogas (mainly methane) and slurry | Wet waste, cattle dung | Needs steady feedstock |
| Refuse-derived fuel (RDF) | Dry, non-recyclable combustible waste shredded and dried into fuel | Cement kilns, power plants | Needs low moisture and no chlorinated plastics |
| Incineration / waste-to-energy | Burning at high temperature; heat makes power | Mixed residual waste | Dioxins and furans if poorly run; Indian waste is wet and low in calorific value |
| Pyrolysis / gasification | Heating with little or no oxygen | Plastics, biomass | Costly |
| Sanitary landfill | Engineered pit with a liner, leachate collection and gas capture | Inert residual waste only | Methane emissions, fires and leachate if unscientific |
| Biomining | Excavating old dumps, screening the material, recovering soil-like fractions and RDF | Legacy dumpsites | Slow and costly |
Leachate is the dark, toxic liquid that seeps from waste and can pollute groundwater. Landfill gas (methane) is a greenhouse gas and the reason dump fires keep breaking out.
Plastic, E-Waste and Bio-Medical Waste: the Exam Favourites
Plastic Waste Management Rules, 2016 (as amended)
| Provision | Detail |
|---|---|
| Carry-bag thickness | At least 75 microns from 30 September 2021; at least 120 microns from 31 December 2022 |
| Single-use plastic ban | Identified items banned from 1 July 2022: e.g. earbuds with plastic sticks, plastic sticks for balloons, candy and ice-cream, thermocol for decoration, plastic plates, cups, cutlery and straws, wrapping film on sweet boxes and cigarette packets, and PVC banners under 100 microns |
| EPR | Producers, importers and brand owners must collect and recycle the plastic packaging they put on the market (guidelines of 2022) |
| 2025 amendment | Product and registration details on plastic packaging, which can be given through a barcode or QR code (from 1 July 2025) |
Bio-medical waste colour codes (BMW Rules, 2016)
| Colour | What goes in | Treatment |
|---|---|---|
| Yellow | Human and animal anatomical waste, soiled waste (dressings, cotton), expired medicines, chemical waste | Incineration or deep burial (in remote areas) |
| Red | Contaminated recyclable plastics: tubing, bottles, IV sets, catheters, syringes without needles, gloves | Autoclaving or microwaving, then shredding and recycling |
| White (translucent) | Sharps: needles, blades, scalpels, in a puncture-proof container | Autoclaving, then shredding |
| Blue | Glassware and metallic body implants, in cardboard boxes with blue marking | Disinfection, then recycling |
E-waste
- E-waste contains lead, mercury, cadmium, brominated flame retardants, and also valuable gold, copper and rare earths (“urban mining”).
- Much of it is still handled by the informal sector, where open burning and acid baths harm workers and soil.
- The 2022 Rules put EPR obligations on producers through a CPCB online portal, with recycling targets rising year by year. A 2024 amendment set a price band for EPR certificates, which some manufacturers challenged in court (2025–26).
Swachh Bharat and Other Programmes
| Programme | Year | Key point |
|---|---|---|
| Swachh Bharat Mission (स्वच्छ भारत मिशन) | 2 October 2014 | Urban (MoHUA) and Gramin (Jal Shakti) components; ODF target by 2 October 2019 |
| SBM-Urban 2.0 | 1 October 2021 (five years) | Vision of “Garbage Free Cities”: source segregation, MRFs, remediation of all legacy dumpsites |
| SBM-Gramin Phase II | 2020-21 to 2024-25 | ODF Plus: solid and liquid waste management in villages |
| Swachh Survekshan | From 2016 | Annual cleanliness ranking of cities by MoHUA |
| Garbage Free City star rating | Launched 2018 | Cities rated up to 7 stars for waste management |
| GOBARdhan | 2018 | Converting cattle dung and organic waste into biogas and compressed biogas |
| SATAT | 2018 | Compressed biogas plants and offtake by oil companies |
Chhattisgarh: The Ambikapur Model
Ambikapur's SLRM model
- SLRM = Solid and Liquid Resource Management. Started in 2015 in Ambikapur (Surguja) under the district administration led by then-Collector Ritu Sen, with women’s self-help groups federated as the Swachh Ambikapur Mission society.
- How it works: door-to-door collection of segregated waste by the swachhata didis → neighbourhood SLRM centres (each serving a few wards) → sorting into many categories (reports cite more than 60) → sale of recyclables → organic waste composted → small residue sent to cement plants as fuel.
- Results: the old dumping ground was closed, and Ambikapur was described as having no operating landfill. User charges and sale of recyclables pay the women’s wages, making the system largely self-financing.
- Recognition: cleanest small city in Swachh Survekshan 2017; 2nd cleanest city in India in Swachh Survekshan 2019; India’s first Garbage Cafe (2019; a meal in exchange for 1 kg of plastic).
- Scaling up: the state adopted the model across its urban local bodies, with SLRM centres and compost sheds in towns, and segregation sheds and compost pits in villages under SBM-Gramin.
Swachh Survekshan 2024-25 (awards presented by President Droupadi Murmu on 17 July 2025):
- Ambikapur, Patan and Bishrampur entered the new Super Swachh League, a category for cities that had ranked consistently high in earlier surveys.
- Bilaspur was 2nd nationally in the 3–10 lakh population category.
- Bilha (Bilaspur district) was the cleanest town in India with a population under 20,000.
- Raipur received a 7-star Garbage Free City rating.
These are survey-year results: always quote them with the year.
Analysis for Mains
Challenges
- Poor segregation at source: mixed waste cannot be composted or recycled well.
- Legacy dumpsites that pollute groundwater, emit methane and catch fire.
- Weak municipal finances and low user-fee collection (see Urban Local Bodies in Chhattisgarh).
- Informal waste pickers do much of the recycling without recognition, safety or social security.
- Indian waste is wet and low in calorific value, so waste-to-energy plants often underperform.
- EPR compliance and the plastic ban are poorly enforced; rising e-waste and C&D waste.
Why Ambikapur worked (lessons)
- Segregation at source made recycling and composting viable.
- Decentralised SLRM centres cut transport costs.
- Women’s SHGs gave ownership, livelihoods and dignity.
- Revenue from recyclables + user fees gave financial sustainability.
- Administrative leadership and citizen participation sustained it.
Way forward
- Implement the 2026 Rules’ four-stream segregation with door-to-door collection everywhere.
- Integrate waste pickers into the formal system with ID cards and insurance.
- Strengthen MRFs, composting and biomethanation; use RDF in Chhattisgarh’s many cement plants.
- Enforce EPR for plastics, e-waste and batteries.
- Behaviour change: Mission LiFE (Lifestyle for Environment), refusing single-use plastic.
Memory Tricks
SWM Rules 2026: four bins 'W-D-S-S'
Wet · Dry · Sanitary · Special care. Think “With Discipline, Segregate Smart.”
Bulk generator: '20-40-100'
20,000 m² floor area · 40,000 litres of water a day · 100 kg of waste a day.
Bio-medical colours: 'Yellow burns, Red recycles, White pricks, Blue breaks'
Yellow → incinerate (anatomical, soiled). Red → contaminated plastics, autoclave and recycle. White → sharps. Blue → glass.
Plastic thickness: '75 then 120'
75 µm from Sept 2021 → 120 µm from Dec 2022. Single-use plastic items banned 1 July 2022.
Don’t Confuse
| This | vs | That |
|---|---|---|
| SWM Rules 2016 — three streams | vs | SWM Rules 2026 — four streams (in force 1 April 2026) |
| Composting — aerobic | vs | Biomethanation — anaerobic, produces biogas |
| Red bag — contaminated recyclable plastics | vs | Yellow bag — anatomical and soiled waste for incineration |
| E-Waste Rules 2022 | vs | Battery Waste Rules 2022 (separate rules) |
| SLRM — Solid and Liquid Resource Management (Ambikapur) | vs | MRF — Material Recovery Facility for dry waste |
| Basel Convention — transboundary hazardous waste | vs | Stockholm Convention — persistent organic pollutants |
Common Mistakes
MCQ traps
- “The SWM Rules, 2016 are still in force.” False. They were superseded by the SWM Rules, 2026 from 1 April 2026.
- “The SWM Rules apply only to urban areas.” False. The 2026 Rules cover urban and rural local bodies.
- “Syringes with needles go in the red bag.” False. Needles and other sharps go in the white (translucent) puncture-proof container; the red bag is for contaminated plastics such as tubing and syringes without needles.
- “Incineration is the best option for Indian municipal waste.” False. Indian waste is wet and low in calorific value; the hierarchy puts reduction, recycling and composting first.
- “Landfill gas is mainly carbon monoxide.” False. It is mainly methane (and CO₂).
- “Batteries are covered by the E-Waste Rules.” False. They have separate Battery Waste Management Rules, 2022.
Practice
All questions below are original practice questions written in CGPSC style. They are not previous-year questions.
Level 1: Foundation
- The Solid Waste Management Rules, 2026 came into force on ______.
- SLRM in the Ambikapur model stands for ______.
- In bio-medical waste segregation, needles and blades go into the ______ container.
Answers
- 1 April 2026.
- Solid and Liquid Resource Management.
- White (translucent), puncture-proof container.
Level 2: Prelims MCQs
Q1. Consider the following statements about the Solid Waste Management Rules, 2026:
- They require segregation of waste at source into four streams, including sanitary waste.
- They apply only to urban local bodies.
- An entity generating more than 100 kg of waste a day is treated as a bulk waste generator.
Which of the statements given above is/are correct?
- (a) 1 only
- (b) 1 and 3 only
- (c) 2 and 3 only
- (d) 1, 2 and 3
Answer and explanation
(b) 1 and 3 only. The 2026 Rules require four-stream segregation (wet, dry, sanitary, special care) and cover both urban and rural local bodies, so statement 2 is wrong. The 100 kg a day threshold is one of the three bulk-generator criteria (with 20,000 m² floor area and 40,000 litres of water a day).
Q2. Match List I (Bio-medical waste category) with List II (Colour code):
| List I | List II |
|---|---|
| A. Human anatomical waste | 1. White (translucent) |
| B. Contaminated plastic tubing and IV sets | 2. Blue |
| C. Needles and scalpels | 3. Yellow |
| D. Broken glass vials | 4. Red |
- (a) A-3, B-4, C-1, D-2
- (b) A-4, B-3, C-1, D-2
- (c) A-3, B-4, C-2, D-1
- (d) A-3, B-1, C-4, D-2
Answer and explanation
(a) A-3, B-4, C-1, D-2. Anatomical waste goes in yellow for incineration; contaminated recyclable plastics in red for autoclaving; sharps in the white puncture-proof container; glassware in blue-marked cardboard boxes.
Q3. The “Ambikapur model” of waste management in Chhattisgarh is best known for:
- (a) a large centralised waste-to-energy incineration plant
- (b) door-to-door collection of segregated waste by women’s self-help groups and decentralised sorting centres
- (c) converting all municipal waste into compressed biogas
- (d) exporting dry waste to other states for landfilling
Answer and explanation
(b). Ambikapur’s SLRM model relies on women’s SHGs (swachhata didis) collecting segregated waste door to door and sorting it at neighbourhood SLRM centres for recycling and composting. It is decentralised and avoids incineration and landfill.
Q4. Which one of the following is the least preferred option in the waste management hierarchy?
- (a) Reuse
- (b) Recycling
- (c) Energy recovery
- (d) Landfilling
Answer and explanation
(d) Landfilling. The hierarchy runs reduce → reuse → recycle → recover energy → dispose. The 2026 Rules limit landfills to non-recyclable, non-energy-recoverable and inert waste.
Q5. Under the Plastic Waste Management Rules (as amended), the minimum thickness of plastic carry bags from 31 December 2022 is:
- (a) 50 microns
- (b) 75 microns
- (c) 100 microns
- (d) 120 microns
Answer and explanation
(d) 120 microns. The limit was raised from 50 to 75 microns on 30 September 2021 and to 120 microns on 31 December 2022. The 100-micron figure applies to PVC and non-woven banners, which is the usual distractor.
Level 3: Mains Answer Writing
Q1. (60 words) What is refuse-derived fuel (RDF)? Why do the Solid Waste Management Rules, 2026 promote it?
Model answer outline
- Definition: fuel made by shredding and drying the non-recyclable, combustible fraction of municipal waste.
- Why promoted: diverts waste from landfills; replaces coal in cement kilns and power plants; the 2026 Rules require industries to raise RDF use from 5% to 15% over six years.
- Chhattisgarh angle: the state’s cement plants can absorb RDF from its towns, as Ambikapur already does with its residue.
Q2. (150–200 words) “The Ambikapur model shows that solid waste management is more about people than technology.” Discuss, with reference to the Solid Waste Management Rules, 2026.
Model answer outline
- Intro: India’s cities struggle with mixed waste and legacy dumps; Ambikapur (Surguja) became a national model through its SLRM approach from 2015.
- People-centred features: women’s SHGs (swachhata didis) as collectors and sorters; citizen segregation at source; user fees; dignity and livelihoods; administrative leadership.
- Simple technology: decentralised SLRM centres, manual sorting into many categories, composting; residue to cement plants. No costly incinerator.
- Results: dump closed; 2nd cleanest city (Swachh Survekshan 2019); Super Swachh League (2024-25); model scaled across Chhattisgarh.
- Link to the 2026 Rules: four-stream segregation, bulk-generator responsibility, landfill only for residual waste, RDF and legacy-waste remediation all build on the same idea: segregate at source, process locally.
- Limits: technology is still needed for big cities (MRFs, biomethanation, RDF plants); informal waste pickers must be integrated; EPR enforcement.
- Conclusion: Rules and machines work only when citizens segregate and local institutions own the system.
Quick Revision Table
| Fact | Detail |
|---|---|
| SWM Rules 2026 | Notified Jan 2026; in force 1 April 2026; replaced 2016 Rules; urban + rural |
| Four streams | Wet, dry, sanitary, special care |
| Bulk generator | 20,000 m² / 40,000 L a day / 100 kg a day; EBWGR |
| RDF mandate | 5% → 15% over six years |
| Plastic carry bags | 75 µm (Sept 2021) → 120 µm (Dec 2022) |
| SUP ban | 1 July 2022 |
| E-Waste Rules | 2022; in force 1 April 2023; EPR |
| Battery Rules | 2022 |
| C&D Waste Rules | 2025; in force 1 April 2026 |
| BMW colours | Yellow incinerate; Red plastics; White sharps; Blue glass |
| SBM | 2 Oct 2014; SBM-U 2.0 from 1 Oct 2021 (Garbage Free Cities) |
| Ambikapur | SLRM from 2015; SHG swachhata didis; Garbage Cafe 2019 |
| SS 2024-25 (CG) | Ambikapur, Patan, Bishrampur in Super Swachh League; Bilha cleanest under 20,000; Raipur 7-star GFC |
Key Takeaways
Key Takeaways
- The SWM Rules, 2026 (in force 1 April 2026) replaced the 2016 Rules: four-stream segregation, bulk-generator responsibility, landfill only for residual waste, and an RDF push.
- Each waste type has its own rules: plastic (2016, amended), e-waste (2022), batteries (2022), bio-medical (2016), C&D (2025).
- The waste hierarchy puts reduce and reuse first and landfill last.
- Ambikapur’s SLRM model shows segregation, decentralisation and women’s SHGs can make a city nearly landfill-free.
- Quote Swachh Survekshan results with their year.
What’s Next
- Pollution and Waste — Quick Revision, the whole chapter on one page
- Soil and Noise Pollution, the previous topic
- Urban Local Bodies in Chhattisgarh, the institutions that run waste services
- Environmental Conventions, for the Basel, Stockholm and Minamata conventions
- Welfare Programmes, for Swachh Bharat in the wider welfare context
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