The Thames Tideway Tunnel

In 1858 the 'Great Stink of London' made much of the city along the Thames uninhabitable. Between 1848 and 1854 nearly 25,000 Londoners died of cholera, a disease borne by foul water. Joseph Bazalgette saved the city, building sewers that would serve 4 million people and stop waste water emptying into the Thames. These sewers are still the backbone of London's sewerage system today, but the city's...