Urban Waste Disposal, Rural-Urban Migration & the Problems of Slums

NCERT India: People and Economy — Unit V, Chapter 9 (Part 2)

From Pollution to People: The Urban Question

If Part 1 looked at pollution as the contamination of media — air, water, land and sound — Part 2 looks at the contamination of spaces: the ever-expanding waste mounds of Indian cities, the streams of migrants who keep arriving from the countryside, and the slum settlements where many of them eventually live. These three issues are not separate — they are the same urbanisation crisis seen from different angles. Waste is the residue of urban consumption. Migration is the process by which villages empty into cities. Slums are the housing answer that the formal city refuses to provide.

The NCERT chapter emphasises that urban areas are typically marked by overcrowding, congestion, inadequate facilities to support a fast-growing population, and consequently poor sanitary conditions and foul air. This single sentence explains why the three sub-themes of this lesson belong together.

9.5 Urban Waste Disposal — The Mountain in the City

Environmental pollution by solid wastes^? has now become a matter of serious concern because of the enormous growth in the quantity of waste being generated. NCERT defines solid waste as ‘a variety of old and used articles — for example, stained pieces of metal, broken glassware, plastic containers, polythene bags, ash, floppies, CDs, etc., dumped at different places’. These discarded materials are also called refuse, garbage and rubbish.

Two Sources of Solid Waste

Solid wastes come from two main sources:

• Household / domestic establishments — kitchen waste, paper, plastic packaging, used clothing.
• Industrial / commercial establishments — ashes, debris, packaging, broken machinery, off-cuts.

Household wastes are typically disposed of either on public lands or on private contractors’ sites, while industrial solid wastes are collected and disposed of through public (municipal) facilities at low-lying public grounds called landfill areas. The huge turn-out of ashes and debris from thermal power plants, building construction or demolition has posed problems of serious consequence.

Why Solid Waste Is Hazardous

Solid wastes cause health hazards in three distinct ways:

The concentration of industrial units in and around urban centres adds another problem — the dumping of industrial waste into rivers, leading to water pollution. River pollution from city-based industries combined with untreated sewage leads to serious health problems downstream, exactly as we saw for the Ganga and the Yamuna in Part 1.

The Statistics — A Tale of Two Indias

NCERT records a striking contrast between the metro cities and the rest of urban India. In the four big metros — Mumbai, Kolkata, Chennai and Bengaluru — about 90 per cent of the solid waste is collected and disposed. But in most other cities and towns, about 30-50 per cent of the waste generated is left uncollected. It accumulates on streets, in open spaces between houses, and in wastelands — leading to serious health hazards.

The NCERT chapter is unequivocal in its prescription: “these wastes should be treated as a resource and utilised for generating energy and compost”. Untreated wastes ferment slowly and release toxic biogas to the atmosphere, including methane — a fact that turns every unmanaged dump into a small contributor to climate change.

Why ‘Throw, Don’t Sort’ Is the Real Problem

NCERT raises three plain-English questions in the margin of this section: “What do we throw away? Why? Where does our waste end up?” A simple Indian household generates roughly 500 grams per person per day of waste. About 50% is biodegradable kitchen waste, 25% is paper and plastic, 15% is inert (glass, ceramics) and 10% is hazardous (batteries, medicines, light bulbs). If this stream were sorted at source, the kitchen waste could be composted, the dry waste recycled, and only 10-15% would actually need a landfill. In practice, most cities collect everything mixed up — making recovery near-impossible and forcing the entire load into landfills.

Swachh Bharat Mission — The Big Push (2014 onwards)

The Swachh Bharat Mission (SBM)^? is part of the Government of India’s urban renewal effort. Its urban arm, SBM-U, focuses on door-to-door garbage collection, segregation at source, scientific processing and remediation of legacy dumpsites; its rural arm, SBM-G, has built crores of household toilets to end open defecation. NCERT itself notes that “The Swachh Bharat Mission (SBM) is part of the urban renewal mission launched by the Government of India to improve the quality of life in urban slums.”

9.6 Rural-Urban Migration — The Greatest Movement of People

The flow of population from rural to urban areas is one of the most powerful demographic movements in modern India. NCERT lists four reasons for this flow: high demand for labour in urban areas, low job opportunities in rural areas, unbalanced patterns of development between urban and rural regions, and the lure of city wages. Because opportunities in smaller and medium cities are themselves limited, poor people often bypass these towns and head directly to the mega cities for their livelihood.

Push and Pull Factors

According to NCERT estimates, after 1961 around 60 per cent of urban growth in India has been due to natural increase, and about 29 per cent due to rural-to-urban migration. Globally, the trend is even sharper: at present, 55 per cent of the world’s population lives in cities, and this proportion is expected to rise to 68 per cent by 2050 — putting tremendous pressure on governments to make urban areas livable.

9.7 Problems of Slums

Migration to cities does not, by itself, guarantee a better life. NCERT observes that urban centres in India are more differentiated in socio-economic, politico-cultural and developmental indicators than any other geographical area. At the top of the urban hierarchy lie farm-houses and high-income localities — with wide roads, streetlights, water and sanitation, lawns, parks and well-developed green belts. At the other extreme lie slums, jhuggi-jhopari clusters and shanty colonies.

These bottom-of-the-pyramid neighbourhoods are inhabited by people who were forced to migrate from rural areas to the urban centres in search of livelihood but could not afford proper housing due to high rent and high land prices. They occupy environmentally incompatible and degraded patches — floodplains, railway-track edges, marshes, hill slopes — precisely the spaces that the formal city has rejected.

Living Conditions in a Slum

Most of the slum population works in the low-paid, high-risk-prone, unorganised sectors of the urban economy — construction labour, domestic help, sanitation, hawking. Because wages are low and irregular, slum-dwellers tend to be undernourished, prone to disease and unable to afford proper schooling for their children. The poverty makes them vulnerable to drug abuse, alcoholism, crime, vandalism, escapism, apathy and ultimately social exclusion.

NCERT poses a poignant question in the margin: “Why are the children of slum-dwellers deprived of school education?” The answer is the cycle of poverty — parents need the children’s small earnings, the school is far away, the household has no place for homework, and the system rarely accommodates children who lack birth certificates or fixed addresses.

Dharavi by the Numbers

Why Do Slums Multiply?

Three causes act together:

• The migration push-pull engine — rural distress sends labourers to cities every year, and city economies need their cheap labour.
• The shortage of affordable formal housing — land prices in metros are so high that even a steady wage cannot rent a flat in the formal market.
• Weak urban planning & political economy — slums often emerge on disputed or vacant public land, with informal ‘rents’ collected by local intermediaries; demolitions are politically costly.

The challenge is not to make slums illegal — the migrants and the work they do are essential to the city — but to upgrade the quality of housing, provide piped water, sewage, and toilets, secure land tenure, and integrate the slum into the urban grid. The Swachh Bharat Mission, the Pradhan Mantri Awas Yojana — Urban, and city-level slum redevelopment plans (such as the Dharavi Redevelopment Plan) are the policy instruments designed to do this.