A massive lump of congealed fat, wet wipes and other detritus — dubbed the “fatberg” — is growing underneath the streets of Baltimore. 
 
 The Baltimore Department of Public Works said Monday it discovered the fatberg earlier this month in a sewer main between Baltimore Penn Station and the 1700 block of Charles Street. So far the fatberg has been responsible for a dry weather sewer overflow on Sept. 21 that discharged around 1.2 million gallons of sewage into the Jones Falls, the department said. 
 
 A similar fatberg estimated to weigh more than 140 tons was also recently discovered in London’s sewer system and is expected to take weeks to destroy. Baltimore’s fatberg, however, has been mostly scraped off and sent to the landfill on Quarantine Road. 
 
 Department of Public Works Congealed fats, oils and grease have blocked a sewer main between Baltimore Penn Station and the 1700 block of Charles Street. Congealed fats, oils and grease have blocked a sewer main between Baltimore Penn Station and the 1700 block of Charles Street. (Department of Public Works) 
 
 When engineers decided to explore the sewer to determine the cause of multiple sewer overflows in the area, they discovered the fatberg, DPW said. The walls of a 100-year-old, 24-inch wide pipe were caked with congealed fats, oils and grease. Up to 85 percent of the pipe was clogged with the congealed fat, blocking the flow of sewage.Raymond said there were other, smaller fatbergs throughout the city’s pipes, but none as large as the one under Penn Station. 
 
 Raymond said the city has a fats, oils and grease — known as FOG — prevention program targeting restaurants and other food service establishments. When the substances go down a pipe, they congeal, harden and often attach to other items that don’t break down in the sewer, such as wet wipes. 
 
 Plus, Raymond added, FOG can block up a homeowner’s pipes, causing an expensive call to a plumber. 
 
 cwells@baltsun.com 
 
 twitter.com/cwellssun ||||| BALTIMORE (WJZ) — A fatberg has been found in Baltimore sewers, and it is being blamed for a couple recent sewer overflows. 
 
 The fatberg, “a congealed lump of fat” that contains items that do not break down in sewer systems, is in a sewer main between Baltimore Penn Station and the 1700 block of Charles St. 
 
 The fatberg is has caused two severe overflows in the past two weeks, including one on September 21 that discharged nearly 1.2 million gallons into the Jones Falls at North Charles and West Lanvale Streets. 
 
 Baltimore City Department of Public Works engineers went into the sewer to find what was causing the sewer overflows, and found the fatberg. 
 
 Follow @CBSBaltimore on Twitter and like WJZ-TV | CBS Baltimore on Facebook ||||| Media playback is unsupported on your device Media caption The fatberg was filmed by Thames Water engineers who are trying to remove the blockage 
 
 A 250-metre long fatberg weighing 130 tonnes has been found blocking a sewer. 
 
 The solid mass of congealed fat, wet wipes, nappies, oil and condoms formed in the Victorian-era tunnel in Whitechapel, London. 
 
 Thames Water described it as one of the largest it had seen and said it would take three weeks to remove. 
 
 The company's head of waste networks Matt Rimmer said: "It's a total monster and taking a lot of manpower and machinery to remove as it's set hard." 
 
 The company says fatbergs form when people put things they shouldn't down sinks and toilets. 
 
 Media playback is unsupported on your device Media caption What causes fatbergs? 
 
 "It's basically like trying to break up concrete," Mr Rimmer said. 
 
 "It's frustrating as these situations are totally avoidable and caused by fat, oil and grease being washed down sinks and wipes flushed down the loo. 
 
 "The sewers are not an abyss for household rubbish and our message to everyone is clear - please bin it - don't block it." 
 
 The fatberg is about as heavy as 11 double decker buses. 
 
 Work at Whitechapel Road to remove the immense fatberg started this week. 
 
 Eight workers will break up the mass with high-pressure hoses, suck up the pieces into tankers and take it to a recycling site in Stratford. 
 
 In 2013, Thames Water found a bus-size fatberg in a sewer in Kingston-upon-Thames. 
 
 A spokesman for Tower Hamlets Council said: "We know this is a major issue across London. 
 
 "We have set up a waste oil collection point with Truman Brewery in Brick Lane, and strongly encourage businesses to set up collection contracts for their waste oil with companies for recycling."
– Not content to let those tea-sippers across the pond hog the spotlight, Baltimore just announced its very own "fatberg." CBS Baltimore reports the "congealed lump of fat" was found between Baltimore Penn Station and the 1700 block of Charles Street. The fatberg is comprised of fats, oils, and grease that hardened and collected other things that don't break down in the sewer, such as wet wipes, according to the Baltimore Sun. Authorities say it was blocking up to 85% of a 2-foot-wide, 100-year-old pipe. London recently made international news when a fatberg weighing more than 140 tons was discovered lurking in its sewer. Authorities found the fatberg while looking for the source of two sewer overflows in recent weeks, including one on Sept. 21 that sent 1.2 million gallons of sewage into the Jones Falls. While the main fatberg has already been largely broken apart and shipped to a landfill, authorities found a number of smaller fatbergs throughout Baltimore's sewer system. Restaurants and residents alike are advised to avoid putting fats, oils, grease, and wet wipes (even if they're technically "flushable") into the sewer system. "The only items that should be considered flushable are poo, pee, and toilet paper," WBFF states. (Part of London's fatberg may find an unusual home.)