Our business

We're the UK's largest water and wastewater services provider

We supply around 2,600 million litres of tap water across London and the Thames Valley.


Our supply area

View a map of the region we serve, or use our postcode checker.

Read more

Our management team

Our directors have a wealth of experience and extensive knowledge of the water and utility industry.

Find out more

Our performance

Find out more about our regulatory performance.

Read more

Our regulators

The organisations we work with to maintain our good performance.

Read more

Facts and figures

At-a-glance stats and interesting information about Thames Water.

Find out more

Our history

Our history dates back to the 1600s with the creation of the New River.

Find out more

Property services

We manage around 18,000 acres in total on over 5,000 sites.

Know more