Thames Tideway Tunnel

The tunnel will take six years to build and will protect the River Thames from increasing pollution for at least the next 100 years.


The Thames Tideway Tunnel is needed to help the aging Victorian sewer system, which was originally designed for a capacity of 4 million people but now deals with double that at 8 million. Over 39 million tonnes of untreated sewage are flushed into the River Thames each year. The Thames Tideway Tunnel will help reduce this rising pollution for the next 100 years.

What's The Plan?

Watch below to find out more

Building the Thames Tunnel Video

Did You Know?

tunnel logo The width of the sewer will fit 3 London buses side by side

tunnel logo Enough sewage is flushed into the Thames in each year to fill the Royal Albert Hall 450 times

tunnel logo The deepest point will be the height of the Shard's spire

tunnel logo The tunnel will be half the length of the London Marathon

Women into Construction: The ACE Challenge

More Information

Thames Tideway Tunnel


Tunnel Works

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