LONDON, ENGLAND - MAY 25: Field operations manager Nick Fox pictured in the Northern Outfall Sewer at Wick Lane depot on May 25, 2016 in London, England. The sewer was designed by British engineer Joseph Bazalgette following the 'Great Stink' of 1858 and is today worked on by sewer technicians known as 'Flushers'. Thames Water marks Sewage Week this week with a series of events inviting members of the public down into the underground sewer network and around the Abbey Mills pumping station in east London. (Photo by Jack Taylor/Getty Images)