X-Nico

Natural experiment

Snow found that the Southwark and Vauxhall Waterworks Company, which supplied water to districts with high attack rates, obtained the water from the Thames downstream from where raw sewage was discharged into the river.

Sunnyside Reservoir

The reservoir was originally built by the Southwark and Vauxhall Waterworks Company for pre-treatment water storage, but is now used as a settlement lagoon for washwater from the adjacent treatment works before the water is discharged back to the River Thames.

see also