The River Thames had much to do with the epidemic spread of cholera in nineteenth century London. When the water companies were told by Parliament in 1852 to move their intakes up river to above Teddington Lock, it served as a major step in improving the drinking water. One company (Lambeth) complied quickly, and the other (Southwark and Vauxhall) waited until the last minute, right before the August, 1855 deadline. When cholera reappeared in London during the mid-1800s, the delayed move of the Southwark and Vauxall company provided the basis for Snow's grand experiment. Adrian Procktor offers a photo tour of these historical times.
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Click to continue to Stream 3 - d: The "Grand Experiment"