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Our site in King George’s Park in Wandsworth, is the start of our Frogmore Connection Tunnel, which links the sewer overflows into the main tunnel.

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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.

Explore the next sites

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Visit Dormay Street location

Dormay Street

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