A 100-tonne fatberg made of wet wipes and grease was removed from a London sewer after a month of work.

A 100-tonne fatberg, made of wet wipes bound by fat, oil, and grease, has been removed from a sewer in Feltham, west London, after over a month of work by Thames Water engineers. The blockage, located over 10 meters below street level and stretching 125 meters, required specialized equipment, safety measures including gas monitoring, and methods like blasting and suction. The waste was transported to landfill. Thames Water noted that while such large fatbergs are rare, most sewer blockages occur in household pipes and are often caused by flushing non-biodegradable items like wet wipes. The utility reported clearing thousands of blockages in 2025, with wet wipes being a leading cause, and warned that backups can lead to flooding and environmental harm. It continues urging the public to flush only toilet paper.