Projects

We invest around £2 billion each year on improving our water and wastewater network. A number of large-scale projects are in progress to help us transform the way we deliver water. 

As well as this, we're carrying out improvements and repairs across the network. View work in your area.

What we're working on

Find out more about our biggest investment projects.

Thames Tideway Tunnel

Thames Tideway Tunnel

Learn all about the tunnel that will help create a healthy river environment for our capital city. 

White Horse Reservoir

Learn more about our proposed reservoir in Oxfordshire. It will ensure long-term water security for the South East.

Teddington Direct River Abstraction (TDRA)

Discover more about our vital drought resilience project for London.

A view across Esher sewage treatment works and Island Barn Reservoir

Reducing storm discharges

We're making improvements to significantly reduce the need for sewage discharges into rivers.

Overhead shot of London

London flooding response

After the London flooding in 2021, we carried out two reviews to prevent it happening again.

View from the Cumnor Road

Clean power at Farmoor

We’re planning to install a floating solar array at Farmoor Reservoir. This will help to power the water treatment works.

Guildford STW

Relocating Guildford STW

Find out the benefits of moving the sewage treatment works (STW) in Guildford. 

Thames Water engineers installing water meter

Bulk water meter programme

We're installing water meters across the region. These will help to make your water bills more accurate. 

Sewer flooding

Misbourne Valley flooding

We're taking action to prevent sewer flooding that's affecting residents, businesses and the environment.