Last September , London ’s Whitechapel fatberg went viral . It was one of the bombastic on record , measure out   250 meters ( 820 ft ) tip to tip and weighing a astounding   130 metric ton ( 143 ton )   – roughly tantamount to   19 adult African elephants or 878 sumo wrestlers .

But it pal in comparability to the latest ' berg discovered in London ’s toilet . The goliath   recently constitute near the South Bank in Central London is figure to be 750 meters ( 2,460 foot ) long , which would make it three time the size of its record - breaking predecessor and twice the size of the Empire State Building .

This even , Brits with a strong stomach can tune up intoChannel 4to watch a team of flushers perform the unenviable   task of dissecting a 5 - metric ton ( 5.5 - ton ) sample distribution of the beast to find what on the nose it is Londoners have been flushing down their toilets . word of advice : look at really is n’t for the faint - hearted .

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Fatbergs are a gruesome concoction of   congeal fat , human waste , sanitary intersection , wet wipe , and safe , and tests confirm that this particular monster is almost 90 percent discarded preparation oil .

“ The fertile spliff to the side of the tobacco pipe , the wet wipes fare down and pose to the juicy , other fat come down and sticks to the wet wipes and that tot to the heap of the fatberg , ” explained Andy Drinkwater , a civil engineering consultant ,   according toThe Guardian .

In and among the fat and pixilated wipes , the team distinguish traces of street drugs and illegal gym drugs , reveal a dark side to London lifespan . passably surprisingly , ostracise sports - enhancing accessory , such as hordenine and ostarine , which are used to promote muscle growth , were detected more often than amateur drugs like MDMA and cocain . The flushers also   found baggies , a needle , and a syringe .

Most distressful was the   level of potentially life sentence - threatening antibiotic - immune bacterium ( Listeria , Campylobacter , andE.   coli ) the team detected . Not only does this pose a risk of exposure to London ’s sewage workers who spend their day trudge through the populace ’s kettle of fish to keep   the urban center clean , it could also be a public health risk if there was ever a sewerage flood .

The Southbank fatberg is just one of 12 currently lurk in London ’s sewage system , all of which have to be dealt with by flushers by hand . The arduous job of clean and removing fatbergs costs Thames   Water £ 930,000 ( $ 1.3 million ) everysinglemonth , and the situation is getting worse .

“ We and other water companies are face a unremitting battle to keep the nation ’s sewers free from fatbergs and other blockages,”saidThames Water ’s waste networks manager , Alex Saunders .

Part of the problem is an honest-to-god and superannuated sewage system , perfectly capable of deal with the " Great Stink " in Victorian England but perhaps not quite up to labor   in a grow and modernizing city . However , there are things Londoners can do to help . One thing is tothink before you blush .

Fatberg Autopsy : Secrets of the Sewers . Channel 4 / Youtube