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For all its opportunities, Mumbai faces immense challenges created by rapid urbanisation. The sheer speed and scale of population growth have overwhelmed the city's infrastructure, housing, water supply, sanitation systems and transport networks. These challenges are most visible in Mumbai's vast informal settlements (slums), home to an estimated 60% of the population. This lesson examines these challenges in detail, with a particular focus on Dharavi — one of the most studied slum settlements in the world.
Mumbai faces one of the most severe housing crises of any city in the world:
| Issue | Detail |
|---|---|
| Housing deficit | Estimated shortage of 1.1 million affordable housing units |
| Land scarcity | Mumbai's peninsula geography severely limits available land; prices among the highest globally |
| Property prices | Average apartment price in South Mumbai: ~15,000–20,000perm2(comparabletoLondonorManhattan);evensuburbsaverage3,000–5,000/m² |
| Slum population | Approximately 6.5 million people (about 60% of the city's population) live in slums or informal settlements |
| Pavement dwellers | An estimated 200,000–300,000 people live on pavements, under bridges and in other open spaces with no shelter at all |
The housing crisis creates a stark spatial inequality: luxury high-rise apartments (such as the Antilia building, the private residence of Mukesh Ambani, valued at over $1 billion) stand within sight of sprawling slum settlements where families live in structures of corrugated metal, plastic sheeting and reclaimed materials.
Exam Tip: The contrast between extreme wealth and poverty in Mumbai is a powerful point to make in exam answers. Mentioning that Antilia (a 27-storey private home) is located just 10 km from Dharavi (where 1 million+ people share 2.1 km²) vividly illustrates inequality.
Dharavi is essential knowledge for the Edexcel B specification. Located in central Mumbai between the Western and Central railway lines, it is one of the largest and most densely populated slum settlements in Asia.
| Feature | Detail |
|---|---|
| Area | Approximately 2.1 km² (about the size of 300 football pitches) |
| Population | Estimated 1 million+ people (some estimates suggest up to 1.5 million) |
| Population density | Over 300,000 people per km² — one of the highest anywhere in the world |
| Location | Central Mumbai, between Mahim and Sion stations; prime real estate worth an estimated $10 billion |
| Housing | Multi-storey structures of corrugated iron, concrete blocks and reclaimed materials; average dwelling ~10 m² (the size of a parking space) |
| Floors | Many structures are 2–3 storeys high; extremely narrow alleys (some less than 1 metre wide) |
| Origins | Grew from the 1880s when residents were displaced from central Bombay by colonial development; fishermen, potters and tanners were among the first settlers |
| Challenge | Detail |
|---|---|
| Water supply | One municipal water tap for every 500–1,000 residents; water available for only 2–3 hours per day; residents queue for hours |
| Sanitation | One toilet for every 500–1,500 people; many residents use open drains or open defecation; sewage flows through narrow alleys |
| Disease | Overcrowding and poor sanitation lead to high rates of tuberculosis (TB is 6 times more common in Dharavi than Mumbai's average), diarrhoeal diseases, malaria and dengue fever |
| Fire risk | Narrow alleys, flammable building materials and illegal electricity connections create severe fire risk — fires break out regularly, destroying homes and possessions |
| Flooding | Dharavi lies on a former mangrove swamp; low-lying areas flood during every monsoon season |
Despite its challenges, Dharavi has a thriving informal economy:
Exam Tip: Dharavi is NOT simply a place of poverty and deprivation. The best exam answers recognise that Dharavi is also a place of enterprise, community and resilience. Mentioning its $1 billion economy, recycling industry and strong community networks shows balanced understanding.
Water and sanitation challenges extend far beyond Dharavi:
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