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H3.6Public health reform in the 19th century: Edwin Chadwick, the 1848 and 1875 Public Health Acts, John Snow, Joseph Bazalgette and London’s sewers

Notes

Public health reform in 19th-century Britain

The Industrial Revolution made British cities terrible places to live. Crowded slums, contaminated water, no sewage systems and repeated cholera epidemics made public health a political crisis. Reformers — chief among them Edwin Chadwick, John Snow and Joseph Bazalgette — eventually forced government action, culminating in the Public Health Act of 1875.

Conditions in industrial cities

By 1850 Britain had become the first majority-urban nation:

  • Population — Manchester grew from 70,000 (1801) to 350,000 (1851).
  • Slums — back-to-back terraces, no ventilation, shared privies (sometimes one for 100 families).
  • Water — drawn from polluted rivers (Thames was an open sewer); pumps shared by streets.
  • Sewage — open drains, cesspits leaking into wells.
  • Air — coal smoke from factories and homes; smog killed thousands.
  • Workplaces — long hours, dangerous machinery, child labour.

Average life expectancy in Manchester was 17 in 1840 (compared with 38 in rural Rutland).

Cholera — the trigger

Britain suffered four major cholera epidemics:

  • 1831–32 — 32,000 deaths.
  • 1848–49 — 62,000 deaths.
  • 1853–54 — 20,000 deaths (the year of Snow's discovery).
  • 1866 — 14,000 deaths (last major outbreak).

Symptoms — severe diarrhoea, vomiting, dehydration, blue-grey skin from collapse — death within hours. Disease arrived from India via shipping. The fear of cholera (a disease of rich and poor alike) created political pressure.

Edwin Chadwick (1800–1890) — reform champion

Chadwick, a lawyer and civil servant, worked on the Poor Law Commission. He realised the link between disease and poverty: sick people couldn't work, costing the parish.

Chadwick's Report on the Sanitary Condition of the Labouring Population of Great Britain (1842) was a turning point. He used statistics to argue that:

  • Slum conditions caused disease.
  • Disease caused poverty (sickness → no income).
  • Public health investment would save money in poor relief.

He argued for clean water, sewage systems, and a national public health authority.

Public Health Act 1848 — passed after the 1848 cholera epidemic. Created:

  • A General Board of Health.
  • Local boards of health (where 10% of ratepayers requested one or where death rate exceeded 23 per 1,000).
  • Powers to provide clean water, sewerage, drainage.

But the Act was permissive, not compulsory — most areas did not adopt it. Chadwick was abrasive and made enemies; the Board was abolished in 1854.

John Snow (1813–1858) — cholera and epidemiology

Snow was a London physician who suspected cholera spread through water, not miasma. The 1854 Soho outbreak gave him his chance.

  • Within 10 days, 500 people died in a small area around Broad Street, Soho.
  • Snow plotted deaths on a map — they clustered around the Broad Street pump.
  • He removed the pump handle on 8 September 1854.
  • The outbreak ended.
  • He showed the local water company drew water from sewage-contaminated Thames.

Why important:

  • First epidemiological investigation — using maps and data.
  • Proved cholera was waterborne (though without germ theory yet — Koch identified the bacterium in 1883).
  • Built scientific case for clean water supply.

Limits:

  • Many doctors still believed in miasma.
  • Snow died young; full acceptance came after Koch.

Joseph Bazalgette (1819–1891) — London's sewers

Bazalgette was Chief Engineer of the Metropolitan Board of Works. The Great Stink of 1858 — when the Thames smelled so bad Parliament was suspended — finally produced political will. Parliament authorised a vast sewerage scheme.

  • 1859–1875 — Bazalgette built 132 km (82 miles) of intercepting sewers along the Thames.
  • Sewage was diverted to outfalls east of London, away from drinking water.
  • Pumping stations at Crossness and Abbey Mills.
  • Used Portland cement (an innovation) for durability.
  • The system still serves London today.

Result:

  • Cholera vanished from London after 1866.
  • Death rates from waterborne disease fell sharply.

The Second Public Health Act 1875

The Conservative government under Disraeli passed the Public Health Act 1875 — a landmark.

  • Compulsory for local councils (unlike 1848).
  • Required sewers, water supply, waste removal in every district.
  • Appointed a Medical Officer of Health in every area.
  • Council inspectors enforced building standards.

Coupled with:

  • Artisans' Dwellings Act 1875 — slum clearance.
  • Sale of Food and Drugs Act 1875 — quality control.
  • Education Act 1870 — literacy enabled informed citizenry.

Why did reform finally succeed?

  • Cholera — recurring epidemics forced political action.
  • Statistics — Chadwick made the economic case.
  • Snow's epidemiology — proved waterborne transmission.
  • Engineering capacity — Bazalgette's sewers possible only with industrial materials and skills.
  • Ending of laissez-faire — political acceptance that government must intervene.
  • Reform Act 1867 — extended vote to urban working-class men.
  • Civil service reform — professional public health officials.

Continuity vs change

  • Pre-1830 — local, voluntary, ineffective.
  • 1842–48 — Chadwick's Report and first Public Health Act (permissive).
  • 1858–66 — Bazalgette's sewers; Snow's epidemiology.
  • 1875 — Compulsory national framework.

By 1900 Britain's public health was transformed — life expectancy in cities rose from 17 (1840) to over 50.

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Practice questions

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  1. Question 14 marks

    Industrial conditions

    Describe two features of conditions in 19th-century British cities that caused disease. (4 marks)

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  2. Question 28 marks

    Chadwick

    Why was Edwin Chadwick important to public health reform? (8 marks)

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  3. Question 38 marks

    John Snow

    Explain how John Snow proved cholera was waterborne. (8 marks)

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  4. Question 48 marks

    Bazalgette

    Why was Joseph Bazalgette's London sewer system so significant? (8 marks)

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  5. Question 54 marks

    Public Health Act 1875

    Describe two features of the Public Health Act 1875. (4 marks)

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  6. Question 616 marks

    Why reform finally happened

    "Cholera was the most important reason public health reform happened in 19th-century Britain." How far do you agree? (16 marks)

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Flashcards

H3.6 — Public health reform: Chadwick, Snow, Bazalgette and the 1875 Act

11-card SR deck for AQA GCSE History topic H3.6

11 cards · spaced repetition (SM-2)