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. 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. Officials say the massive plug of grease has been growing, far below the surface, in a midtown sewer main between Baltimore Penn Station and the 1700 block of Charles Street, which includes the Charles Theater. 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. 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. (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. They sent a machine with a closed-circuit television camera into the sewer, and soon discovered the walls of the sewer pipe were caked with congealed fats, oils, and grease (FOG). 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. This work will be done as the capacity of Baltimore’s sewer collection and treatment systems are upgraded under the City’s sewer system consent decree. DPW has a FOG program in effect which includes monitoring of food service establishments that discharge, or have the potential to discharge FOG-laden wastewater. 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.
– 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.)