Flood warning over 'super-sewer'

Help

Residents of a US city with a similar "super-sewer" to the one planned for London have said several basements were flooded during downpours in 2010, despite the presence of the tunnel.

Several basements in homes in Milwaukee were damaged by sewage, they said, but officials stressed it was impossible for the sewer to back up into homes.

Thames Water said the US tunnel had achieved everything it set out to do and that it was not designed to deal with basement flooding.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.