Our region

We are the UK's largest water and wastewater services company.

Every day, we supply around 2,600 million litres of tap water to 8.7 million customers across London and the Thames Valley. We also remove and treat 2,800 million litres of sewage for 13.8 million customers.

 View a map of our region (0.21Mb)

New customer?

Use our postcode search tool to find out if you're in our region.

 Postcode search

Moving home?

It's easy to register your change of address online
 

Moving premises

Simply fill in our online form and we'll do the rest