The Broad Street pump handle is removed

Assembled from 24 blocks · 1 evidence · 10 related

1. Story
2. After mapping deaths in the Soho cholera outbreak against the pumps that served the households, John Snow persuades the Board of Guardians of St James parish to remove the handle from the Broad Street pump. The outbreak was already in decline, so the action did not end it; its importance is as the first use of spatial epidemiology to identify a source.
3. Knowledge
4. Sanitation and water treatment
5. John Snow
6. The Broad Street pump, Soho
7. The Broad Street pump handle is removed
8. Connections
9. The Broad Street pump, Soho
10. John Snow
11. Sanitation and water treatment
12. John Snow
13. The Broad Street pump handle is removed
14. The Broad Street pump, Soho
15. Sanitation and water treatment
16. The Broad Street pump handle is removed
17. Edwin Chadwick
18. The rise in life expectancy at birth
19. The collapse of infant and child mortality
20. John Snow
21. The Broad Street pump handle is removed
22. Routine chlorination of a municipal water supply begins in the United States
23. Evidence
24. Supports the waterborne-transmission argument, the Broad Street investigation and the South London water-supply comparison. V55 verification basis: not consulted in this session; the 8 September 1854 handle-removal date comes from the standard secondary account rather than from the monograph.