Thames Water, the company that keeps sewers flowing freely under London, has released a set of disgusting pictures of a "fatberg" that took a week to remove from a 262-foot stretch of Shepherd's Bush Road in West London. The water authority says it was the size of a Boeing 747, if it were buried underground.
"A team of sewer experts from the company fought the ‘berg all last week (Tuesday, Aug. 26 to Friday, Aug. 29). The immense, solid blockage needed to be broken up and removed from the sewer to prevent sewer flooding to nearby homes and business," the company said in a press release.
Fatbergs are composed largely of cooking oil that has been poured down drains while hot and runny. Once in the cold water of the sewer system, however, the fat congeals. The solid mess then combines with "wet wipes." The wipes are frequently labeled as "disposable" but are turning out not to be.
Cooking oil + wet wipes = fatberg, it turns out.
Here was the scene last week in Sheperd's Bush:
You can see that the leviathan is all the way up to the roof of the tunnel, preventing the Thames Water worker from reaching the bottom. (The Sheperd's Bush fatberg was not as big as the monster removed from Kingston-area sewers last year, however.)
The team used high-powered hot water jets for a week to dislodge the colossus.
For scale, that's a tennis ball in the foreground. But you can see that the lipid dam is nearly at the top of the sewer.
'Pretty soon your fatberg is out of control.'
“Wet wipes cling to the fat. Fat clings to the wipes. And pretty soon your fatberg is out of control and sewage is backing up into roads, gardens, and in the worst cases flooding up through toilets and into homes," said Dave Dennis, Thames Water sewer operations manager. “We’ve found all sorts in this sewer — from tennis balls to planks of wood. It goes without saying they shouldn’t be in those pipes. London — bin it, don’t block it.”
Thames Water spends £12 million a year (about $20 million) on the war against fat. “The sewers serve an important purpose — they are not an abyss for household rubbish," Dennis said.
The worst neighborhood in London for fatbergs is Harrow, which has been plagued by 13,417 fatberg sightings in the past five years.
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