The Southern Outfall Sewer is a major sanitary sewer taking sewage from the southern area of central London to Crossness in south-east London. Flows from three interceptory sewers combine at Greenwich pumping station and then run under Greenwich, Woolwich, Plumstead and across Erith Marshes. The Outfall Sewer was designed by Joseph Bazalgette after an outbreak of cholera in 1853 and the Great Stink of 1858.
Abbey Mills Pumping Station is a sewage pumping station in Mill Meads, East London, operated by Thames Water. The pumping station lifts sewage on the London Main Drainage sewerage system into the Northern Outfall Sewer and the Lee Tunnel, which both run to Beckton Sewage Treatment Works.
The pumping station was designed by the architect Charles Driver for the Metropolitan Board of Works Chief Engineer Joseph Bazalgette and was built between 1865 and 1868, housing eight beam engines by Rothwell & Co. of Bolton, two on each arm of a cruciform plan. The architecture is an eclectic style related to Driver's railway station designs. Another of his designs, Crossness Pumping Station, is located south of the River Thames at Crossness, at the end of the Southern Outfall Sewer.
The Great Stink was an event in Central London during July and August 1858 in which the hot weather exacerbated the smell of untreated human waste and industrial effluent that was present on the banks of the River Thames. The problem had been mounting for some years, with an ageing and inadequate sewer system that emptied directly into the Thames. The miasma from the effluent was thought to transmit contagious diseases, and three outbreaks of cholera before the Great Stink were blamed on the ongoing problems with the river.
The smell, and fears of its possible effects, prompted action by the national and local administrators who had been considering possible solutions to the problem. The authorities accepted a proposal from the civil engineer Joseph Bazalgette to move the effluent eastwards along a series of interconnecting sewers that sloped towards outfalls beyond the metropolitan area. Work on high-, mid- and low-level systems for the new Northern and Southern Outfall Sewers started at the beginning of 1859 and lasted until 1875. To aid the drainage, pumping stations were built to lift the sewage from lower levels into higher pipes. Two of the more ornate stations, Abbey Mills in Stratford and Crossness on the Erith Marshes, with architectural designs by the consultant engineer, Charles Driver, are listed for protection by English Heritage. Bazalgette's plan introduced the three embankments to London in which the sewers ran: the Victoria, Chelsea and Albert Embankments.
The Northern Outfall Sewer (NOS) is a major gravity sewer which runs from Wick Lane in Hackney to the Beckton Sewage Treatment Works in east London. Most of it was designed by Joseph Bazalgette, as a result of an outbreak of cholera in 1853 and the "Great Stink" of 1858.
Prior to the work, drains in central London were built primarily to cope with rain water, but the growing use of flush toilets frequently meant that they became overloaded, causing sewage and industrial effluent to flow into the River Thames. Bazalgette's London sewerage system project included the construction of intercepting sewers north and south of the Thames. The Southern Outfall Sewer network diverts flows away from the Thames south of the river.
Crossness Pumping Station is a former sewage pumping station designed by the architect Charles Henry Driver for the Metropolitan Board of Works's chief engineer Sir Joseph Bazalgette. It is located at Crossness Sewage Treatment Works, at the eastern end of the Southern Outfall Sewer and the Ridgeway path in the London Borough of Bexley. Constructed between 1859 and 1865 by William Webster, as part of Bazalgette's redevelopment of the London sewerage system, it features spectacular ornamental cast ironwork, described by architectural historian Nikolaus Pevsner as "a masterpiece of engineering – a Victorian cathedral of ironwork". It was decommissioned in 1956. Subsequently the building has been extensively restored and was opened to the public in 2016.
It is adjacent to Erith Marshes, a grazing marsh, the northern part of which is designated as Crossness Nature Reserve. This provides a valuable habitat for creatures ranging from moths to small amphibians and water voles.