The Thames Tideway Tunnel is a major new sewer, urgently needed to protect the River Thames from increasing pollution.

The project will tackle the problem of overflows from the capital’s Victorian sewers for at least the next 100 years, and enable the UK to meet European environmental standards.

Please watch the video below to find out why we need to clean up the River Thames, how combined sewer overflows work and how the Thames Tideway Tunnel will reduce the amount of untreated sewage entering the river.

The capital’s Victorian sewerage system needs more capacity to meet the needs of modern-day London.

Though built to last and in good condition, the existing sewerage network is now too small to transfer all London’s sewage to our treatment works for processing (after rainfall).

39 million tonnes of untreated sewage flushes into the Thames in a typical year. That’s enough to fill the Royal Albert Hall 450 times. It’s an unacceptable problem, getting progressively worse.

Required to ensure the UK complies with European environmental standards, the Thames Tideway Tunnel will also bring wider social and economic benefits.

A cleaner, healthier River Thames is essential for the well being of the city as a whole.
The Thames Tideway Tunnel will ensure the country’s capital remains a flourishing business centre and tourist destination, protecting the city’s reputation around the world. The river is a great, under-used asset for the capital that must be protected.

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