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Thames Water Ring Main

London water infrastructureThames WaterTunnels completed in 1993Tunnels in LondonUse British English from October 2017
Water tunnels
Shaft and pump house, London Water Ring Main (geograph 5546519)
Shaft and pump house, London Water Ring Main (geograph 5546519)

The Thames Water Ring Main (TWRM, formerly the London Water Ring Main) is a system of approximately 80 km (50 mi) of concrete tunnels which transfer drinking water from water treatment works in the Thames and River Lea catchments for distribution within central London. A major part of London's water supply infrastructure, the initial ring was constructed by Thames Water between 1988 and 1993 at a cost of £248 million (equivalent to £537 million in 2021), and when completed, it was the longest tunnel in the UK. Two extensions were constructed between 2007 and 2010.

Excerpt from the Wikipedia article Thames Water Ring Main (License: CC BY-SA 3.0, Authors, Images).

Thames Water Ring Main
Walnut Tree Road, Borough of Spelthorne

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Wikipedia: Thames Water Ring MainContinue reading on Wikipedia

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N 51.4125 ° E -0.45 °
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Walnut Tree Road

Walnut Tree Road
TW17 0RW Borough of Spelthorne
England, United Kingdom
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Shaft and pump house, London Water Ring Main (geograph 5546519)
Shaft and pump house, London Water Ring Main (geograph 5546519)
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