Among 100 acres of west-London wetland and more than a dozen sports pitches you’ll find Tideway’s site at Barn Elms. Our work here will ‘intercept’ the West Putney storm relief combined sewer overflow (CSO) and divert its flows into the main tunnel via a 213m-long connection tunnel. Access to the West Putney storm relief CSO requires the removal of changing rooms belonging to the Barn Elms Sports Centre – so we’ve built brand-new changing rooms, giving the local community state-of-the-art facilities.

Reconnecting London with the River Thames

London relies on a 150-year-old sewer system built for a population less than half its current size. As a result, millions of tonnes of raw sewage spills, untreated, into the River Thames each year. 

That’s where we come in.  

We’re building a 25km Super Sewer under the Thames to intercept those nasty spills and clean up our river for the good of the city, its wildlife and you.