 The Metropolitan Commission of Sewers was formed, water filtration was made compulsory, and new water intakes on the Thames were established above Teddington Lock.The Chelsea Waterworks Company and the Lambeth Waterworks Company, who shared the services of James Simpson, established the reservoirs and filtration plants at Seething Wells along part of the riverside of Thames Ditton and Surbiton.The Chelsea's former central site was taken over by railway companies to make space for Victoria Station.