London’s $6.6 billion mega-sewer, known as Thames Tideway, formally crossed its final procedural hurdle on August 24, paving the way for the seven-year construction project to begin in 2016.
Under a privately financed deal, a consortium of investors was awarded the contract to build, own and operate in perpetuity approximately 25 km of tunnels across London to capture flows from 34 combined sewer overflows.