Coppermill Stream

The Coppermill Stream is located in the London Borough of Waltham Forest at Walthamstow in an area generally known as the Lea Valley. It is a minor tributary of the River Lea and approximately 2 miles (3.2 km) long. The stream is part of a Site of Metropolitan Importance.[1]

The Coppermill



Rising close to and fed by water from the Low Maynard Reservoir the stream flows in a southerly direction under Ferry Lane A503. Flowing under the Gospel Oak to Barking Line then flowing between the Walthamstow Reservoirs and the East Warwick Reservoir. Before passing through the Coppermill and close to the Coppermills Water Treatment Works. Flowing parallel with Coppermills Lane and skirting Walthamstow Marshes before passing under the Lea Valley Lines and merging with the River Lee Navigation at the Lee Valley Marina close to Springfield Park.


The stream is named after the Coppermill. The mill was purchased by British Copper Company in 1808. The smelted copper was brought to the mill from Landore, Swansea, Wales via the Thames by barge. The copper ingots were used to produce penny and halfpenny tokens.[2] Production ceased in 1857. Before milling copper the mill can be traced back to the 14th century when corn was ground . In the 1670s the mill was used in the production of gunpowder. Later in 1690 for rolling paper . In 1712 as a leather mill and its next use in the manufacture of linseed oil. The mill was purchased by the East London Waterworks Company in the late 1850s and the mill was modified to drive a water pump to assist in the building of reservoirs on nearby marshland.[3] Today the mill is owned by Thames Water.

Coppermills Water Treatment Works

The Copppermills Water Treatment Works was completed in 1969 [4] and is owned and managed by Thames Water. In 2005, work was undertaken to link the works to the London ring main via the Northern Extension tunnel. It was completed in 2009 and enables the facility to be a major supplier of water to the London area. [5]


The clean flowing stream is home to many species of coarse fish including the barbel.[6]


Day tickets are available for angling.[7] Coordinates: 51°34.42′N 0°03.02′W / 51.57367°N 0.05033°W / 51.57367; -0.05033


  1. ^ London Borough of Waltham Forest information Retrieved December 15, 2007
  2. ^ Token collection at Swansea Museum Retrieved December 15, 2007
  3. ^ The Coppermill Retrieved December 14, 2007
  4. ^ Lee Valley Park Retrieved 18 March 2011
  5. ^ Thames Water Retrieved 18 March 2011
  6. ^ Barbel river records Retrieved December 14, 2007
  7. ^ Angling information page 12 Retrieved December 15, 2007

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