'The Bayswater Conduit in 1798', (c1876). Outlet pipe and conduit of the River Westbourne, in 15th century conduits were laid to carry drinking water into the City of London, by 19th century, the water was polluted by the use of sewers. From "Old and New London: A Narrative of Its History, Its People, and Its Places. The Western and Northern Studies", by Edward Walford. [Cassell, Petter, Galpin & Co., London, Paris & New York]