Tideway is building the Thames Tideway Tunnel – London's new super sewer

We’re busy constructing a 25km tunnel under London’s river that will prevent the tens of millions of tonnes of pollution that currently pollute the River Thames every year.

This necessary expansion of London’s sewer network is due for completion in 2024, and is happening across 24 construction sites in London. These span from Acton in West London to Beckton in the East, and many are located on the river edge in the centre of the city.

It may be hard to believe, but until the tunnel is built, we’re treating the river like a toilet. Raw sewage flows directly into the Thames when it rains, as this is the only way to stop homes and streets from flooding when the existing Victorian sewers overflow.

Super Sewer updates