Dr John Snow noticed all the Cholera victims were all concentrated in a small area except one. She got her water from the Bridge Street Pump

With Statistics collected by Mr. William Farr, Snow was able to trace the cholera back to Broad Street, and the pump

The Pump's handle was removed, and Cholera stopped spreading. This proved Cholera was spread by water

After outbreaks of influenza, Cholera and Typhoid, Chadwick was asked by the government to compile a report based upon living conditions

The report showed a direct link between poor living conditions and disease

Hot summer weather caused untreated human waste in the Thames to be easily smelt, and unbearable. This alongside cholera, meant London required a way to get rid of the waste

Joseph Bazalgette engineered a huge number of sewers to take it out of the Thames, where it could be taken away to sea

This caused a positive impact on the public health of the city

William Farr pioneered the idea of Medical statistics. His statistics helped people to understand what was causing deaths, and helped Dr. John Snow with the cholera outbreak

The Government were changing its policy of Laissez- Faire for the first time

A Central Board of Health was created, and towns were encouraged to create Local Boards of Health

Towns were supposed to appoint a medical officer to provide sewers, inspect houses and check food was fit for consumption. However, none of it was compulsory

Local authorities now had to appoint medical officers to oversee public health

Sewers had to be maintained and fresh water provided. Rubbish should also be collected