Crossness Sewage Treatment Works

51°30′19″N 0°08′31″E / 51.50540°N 0.14202°E / 51.50540; 0.14202

The Crossness Sewage Treatment Works is a sewage treatment plant located at Crossness in the London Borough of Bexley. It was opened in 1865 and is Europe's second largest sewage treatment works, after its counterpart Beckton Sewage Treatment Works located north of the river.^[1] Crossness treats the waste water from the Southern Outfall Sewer serving South and South East London, and is operated by Thames Water.

The treated effluent from the plant is discharged into the River Thames at the eastern end of the site.