 Under the Act, it became unlawful for any water company to extract water for domestic use from the tidal reaches of the Thames after 31 August 1855, and from 31 December 1855 all such water was required to be "effectually filtered".In the meantime, an outbreak of cholera in 1854 led to the deaths of an estimated 4,267 people supplied by the company.To comply with the legislation, the Southwark and Vauxhall Company built new waterworks in Hampton between Molesey and Sunbury Locks in 1855.