Environment minister Rory Stewart has said that the new Thames Tideway Tunnel is set to bring environmental benefits worth almost £13bn.
New figures show that construction of the tunnel will deliver greater than previously expected improvements in water quality.
“London is one of the most dynamic cities in the world and it is vital we have a river that is not filled with sewage every time there is heavy rainfall,” said Stewart during a visit to the Lee Tunnel construction site at Abbey Mills where it will connect with the Tideway Tunnel.
“This new research reveals the tunnel will bring up to £13bn worth of benefits to the capital’s natural environment. It will prevent millions of tonnes of sewage flowing into the river every year and it will mean we will have cleaner water for all to enjoy and improved water quality to better protect the Thames’ precious marine wildlife.
“The tunnel is an excellent example of world-leading British engineering at its best as well as boosting economic growth and generating thousands of jobs.”