LONDON -- It may look like an iceberg, but there's nothing cool about it.


Utility company Thames Water says it has discovered what it calls the biggest "fatberg" ever recorded in Britain – a 15-ton blob of congealed fat and baby wipes the size of a bus lodged in a sewer drain. Thames Water says the mound of "wrongly flushed festering food fat mixed with wet wipes" was found under a road in the London suburb of Kingston.


london fatberg


In this undated image released by Thames Water company, showing part of a 15-ton lump of fat and other debris coagulated inside a main London city sewer, which they have spent many days clearing from the drain, it is announced Tuesday Aug, 6, 2013. Utility company Thames Water says it has cleared what it calls the biggest "fatberg" ever recorded in Britain, a 15-ton blob of congealed fat and baby wipes the size of a bus, which was lodged inside a London sewer drain. (AP Photo/Thames Water)


Thames Water deals with fatbergs all the time. But the company said Tuesday it was sharing news of the massive lard lump in hopes that customers will think twice about what they dump down the drain.


The company says untreated fatbergs cause flooding and backups.



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    <a href="http://www.americanrivers.org/endangered-rivers/" target="_blank">List courtesy of American Rivers.</a>




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    <a href="http://www.americanrivers.org/endangered-rivers/" target="_blank">List courtesy of American Rivers.</a>