Lee Tunnel
| Overview | |
|---|---|
| Official name | Lee Tunnel |
| Coordinates | 51°31′51″N 0°00′03″W / 51.5307°N 0.000835°WCoordinates: 51°31′51″N 0°00′03″W / 51.5307°N 0.000835°W |
| Status | Open |
| Start | Abbey Mills Pumping Station |
| End | Beckton Sewage Treatment Works |
| Operation | |
| Work begun | 2010 |
| Constructed | MVB JV consortium |
| Opened | 28 January 2016 |
| Owner | Thames Water |
| Operator | Thames Water |
| Technical | |
| Length | 6.9 km (4.3 mi) |
| Highest elevation | −75 m (−246 ft) at Abbey Mills |
| Lowest elevation | −80 m (−260 ft) at Beckton |
| Width | 7.2 m (24 ft) |
The Lee Tunnel, also known as the East Ham to Stratford deep tunnel, is a tunnel in East London for storage and conveyance of sewage mixed with rainwater. The tunnel is part of the Thames Tideway Scheme and runs from Abbey Mills Pumping Station down to Beckton Sewage Treatment Works under the London Borough of Newham.
This 6.9 km (4.3 mi) long tunnel, of diameter 7.2 m (24 ft), running from 75 m (246 ft) deep at Abbey Mills down to 80 m (260 ft) deep at its terminus at Jenkins Lane, East Ham, will capture 16,000,000 m3 (1.6×1010 l), or 16 million tonnes, of sewage annually from the single largest polluting CSO in London. This sewage would otherwise flow straight into the River Lea, the Thames Tideway and eventually the Thames Estuary. However, the sewage will now be pumped up to the Beckton Sewage Treatment Works – the largest sewage treatment works in Europe – and the resultant clean water will be emptied into the River Thames. The reason for starting at −75 m is to be ready to collect sewage from the lowest point of the Thames Tideway Tunnel, which is under construction and intended to connect.
Thames Water awarded the construction contract to the MVB JV consortium, comprising Morgan Sindall, VINCI Construction Grands Projets and Bachy Soletanche, in January 2010. The cost was an estimated £635 million.
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