Thames super sewer begins cleaning up London’s river
London’s ambitious effort to clean up the River Thames is making significant progress, with the new “super sewer” already preventing hundreds of thousands of tonnes of sewage from entering the water. The Thames Tideway Tunnel, a colossal engineering project, has begun to show results with the activation of valves at four of the 21 planned connection sites.
The first test came on the 23rd of September, during a period of heavy rainfall, when the tunnel successfully captured nearly 600,000 cubic meters of sewage in just 24 hours. This demonstrates the growing impact of the system, which is designed to intercept, store, and transfer sewage waste away from the river.
The 25-kilometer tunnel, which connects to the 6.7-kilometer Lee Tunnel, is now fully operational. The system, with a capacity to handle 1.6 million cubic meters of sewage, is expected to drastically reduce the harmful effects of sewage pollution in the Thames, especially during storms.
Andy Mitchell, CEO of Tideway, emphasized the importance of these early results, stating, “We are starting to have an impact. The cleaning up of the tidal Thames has definitely started.” However, he also noted that more work remains, including further system testing and connecting additional discharge points.
The £4.5 billion project, which has been under construction for eight years, involves over 20 deep shafts across London to divert sewage flows. Once fully operational, the super sewer will reduce storm sewage spills by around 95%, offering a major boost to the health of the river and its wildlife.
Environmental advocates, including Thames Water CEO Chris Weston and Thames21 CEO Chris Coode, have praised the project, highlighting its potential to protect and restore the river’s ecosystem. The government also supports the initiative, with Water Minister Emma Hardy calling it a model for future investments in the country’s waterways.
The super sewer represents a crucial step towards a cleaner, healthier Thames for London and its inhabitants.
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