Last reviewed: 10.4.2012 - 5.22pm
We have replaced more than 1,400 miles of old water mains, to reduce leaks and bursts and improve supplies for a growing population.
Please click the links below to find out more.
In this section
Why we are replacing pipes
London's water mains are among the the oldest in the UK, with 44 per cent over 100 years old.
Possible impacts of our work
Find out how our mains replacement work may affect you, both during and after the work has been completed.
How we replace pipes
Read about the various ways we can go about replacing the Victorian water mains in your street.
Easing congestion in the capital
We were the first UK utility to start using road plates to allow motorists to drive straight over open trenches where we are working.
Frequently asked questions
Read answers to the most frequently asked questions about out Victorian mains replacement programme.
Contact us
Find out how to contact us if your would like more information on our mains replacement work.
Planned improvements
Get the latest information on major repairs, reported leaks and planned work across our network.
The Big Map
We're investing nearly £5bn between 2010 and 2015. Explore our interactive map to find out how your region will benefit.
