Bazalgette’s project consisted of the construction of intercepting sewers both North and South of the Thames; the Northern Outfall Sewer joins the Thames at Bow Creek. Until this time, The River Thames in central London did not have an embankment. The drains were built to cope with rain water, and the use of flush toilets led to mud, shingle and sewage building up.
External Links
Crossness Pumping Station (http://www.crossness.org.uk/)
An outfall is the discharge point of a waste stream into a body of water; alternatively it may be the outlet of a river, drain or a sewer where it discharges into the sea, a lake or the like.
An ocean outfall may be conveyed several miles offshore, to discharge by nozzles at the end of a spreader or T-shaped structure.
Outfalls may also be constructed as an outfall tunnels or subsea tunnels and discharge effluent to the ocean via one or more risers with nozzles.
Although limited sewer systems built during colonial period used wood- Boston being the most notable example- it proved to be too porous and was replaced by brick in the mid-nineteenth century.
Sewer construction was an expensive and time consuming process.
Household wastewater is introduced into the sewer system through small pipes (generally 12"-18" in diameter) known as lateral sewers that lead from the house and connect to a collector pipe, or sub-main.
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