The nature and impact of squatter settlements in urban areas

Squatter settlements, also known as shanty towns or slums, are makeshift housing areas that emerge due to rapid urbanisation in emerging and developing countries. These settlements are often built by rural migrants seeking work in cities, who construct homes on unused or unauthorised land due to a lack of affordable housing options.

Characteristics of squatter settlements

• Location challenges - Typically found on the outskirts of cities, along major roads, or on steep slopes and other economically undesirable land.
• Construction materials - Homes are built using scrap materials like corrugated metal, wood, plastic sheeting, and packing boxes, reflecting the limited resources of residents.
• Global terminology - Known by various names worldwide, such as favelas in Brazil, barriadas in Latin America, bidonville in North Africa, and bustees in the Indian subcontinent.
• Population density - High percentages of urban populations live in these areas, for instance, approximately 58% in Nairobi, Kenya, and around 43% in Mexico City, Mexico.

Hazards and risks in squatter settlements

• Environmental dangers - Often located in areas prone to flooding, landslides, or heavy pollution, increasing vulnerability to natural disasters.
• Health and safety issues - Overcrowding contributes to the rapid spread of diseases, frequent fires due to flammable materials, and elevated crime rates.
• Lack of infrastructure - Absence of piped water, sanitation, and waste disposal systems, leading to poor living conditions.

Despite the challenges, squatter settlements provide essential shelter for the urban poor. For many, living in these areas and engaging in informal work offers more opportunities than the rural life they left behind, even if conditions remain harsh.

The role of the informal economy in urban survival

The informal economy plays a critical role in the survival of many urban residents in developing and emerging countries, particularly in cities like Nairobi and Mexico City. It provides a means of income for those who face unemployment or underemployment in formal sectors.

Features of the informal economy

• Prevalence in urban areas - A significant portion of non-agricultural employment is informal, with figures as high as 75% in Kenya and around 52% in Mexico.
• Nature of work - Includes activities like street vending, small-scale trading, and casual labour, often conducted without formal contracts or regulations.
• Survival strategy - Offers a vital lifeline for families, providing just enough income to meet basic needs in the absence of formal job opportunities.

Challenges within the informal economy

• Job insecurity - Work is often irregular, with no guaranteed income or benefits, leaving workers vulnerable to financial instability.
• Limited protections - Lack of legal oversight means workers are often exposed to exploitation, unsafe conditions, and long hours without recourse.
• Economic contribution - Despite challenges, the informal sector supports urban economies by meeting the demand for affordable goods and services.

The causes and effects of urban pollution

Urban pollution is a pervasive issue in cities of developing and emerging countries, particularly in and around squatter settlements. It arises from multiple sources and significantly impacts the health and environment of urban residents.

Sources of urban pollution

• Lack of infrastructure - Squatter settlements often lack proper sanitation and waste disposal, leading to garbage accumulation and water contamination.
• Fuelwood burning - Common in poor areas for cooking and heating, contributing to air pollution through smoke and particulate matter.
• Traffic congestion - High vehicle numbers in urban areas release exhaust fumes, worsening air quality.
• Industrial activities - Manufacturers often operate with minimal environmental controls, discharging pollutants into air and water bodies.
• Additional nuisances - Noise from traffic and industry, unpleasant odours from waste, and visual pollution from litter, graffiti, and dilapidated structures.

Effects of urban pollution

• Health risks - Poor air and water quality lead to respiratory issues, waterborne diseases, and other health problems among residents.
• Environmental degradation - Pollution damages local ecosystems, contaminating rivers and reducing air quality, which affects both urban and surrounding areas.
• Reduced quality of life - Constant exposure to polluted environments lowers overall well-being and creates unpleasant living conditions.

Factors contributing to a low quality of life in cities

A low quality of life is a significant challenge in urban areas of developing and emerging countries, often described as deprivation. This term refers to living standards below the majority in a given city or region, encompassing multiple hardships faced by residents.

Dimensions of deprivation

• Housing issues - Overcrowded, poor-quality homes in squatter settlements with inadequate access to basic services like water and sanitation.
• Employment struggles - High levels of unemployment or underemployment, with many relying on unstable informal work for survival.
• Environmental challenges - Living in polluted areas with constant exposure to health hazards from air, water, and noise pollution.
• Access limitations - Lack of access to essential services such as proper nutrition, education, healthcare, and opportunities for leisure or recreation.

Measuring quality of life

The Quality of Life Index (QLI) provides a comparative measure of living standards across countries, factoring in variables like safety, healthcare, cost of living, and pollution levels. For example, national scores show disparities between emerging and developing countries, with Mexico scoring around 138 and Kenya approximately 85 on a scale where the highest recorded is around 195.

Consequences of low quality of life

• Social inequality - Deprivation widens the gap between the urban poor and wealthier residents, perpetuating cycles of poverty.
• Health and well-being - Limited access to medical care and poor living conditions contribute to higher disease rates and lower life expectancy.
• Economic barriers - Lack of education and secure employment restricts upward mobility, keeping individuals and families trapped in deprivation.