What was the size of the fatberg removed from the Feltham sewers?

The fatberg removed from the Feltham sewers in London weighed an astonishing 100 tons, equivalent to the mass of 8 double-decker buses.

How long did it take Thames Water to clear the Feltham fatberg?

It took a team of water engineers from Thames Water a full month to blast and chisel the massive 100-ton fatberg loose from the sewers 10 meters below the streets of Feltham.

What is Thames Water doing to raise awareness about the impact of drain pollution?

Thames Water is circulating details of the Feltham fatberg cleanup as part of a month-long national campaign to educate the public on how substances and items tipped down drains can harm the environment, including rivers and seas.

Home / Environment / Massive 100-Ton Fatberg Cleared from London Sewers in Monthlong Operation

Massive 100-Ton Fatberg Cleared from London Sewers in Monthlong Operation

6 Oct

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Summary

Water engineers spent a month blasting and chiseling a 100-ton fatberg from Feltham sewers
Blockage was equivalent to 8 double-decker buses, stuck 10 meters below street level
Thames Water circulating details to raise awareness of drain pollution's impact on environment

Massive 100-Ton Fatberg Cleared from London Sewers in Monthlong Operation

In a major sewer cleanup operation, a team of water engineers from Thames Water have spent the past month blasting and chiseling a massive 100-ton fatberg loose from under the streets of Feltham, west London. The blockage, equivalent in mass to 8 double-decker buses, was discovered 10 meters below street level and consisted primarily of wet wipes compacted into a fibrous and gelatinous mass, combined with congealed fat, oil, and grease.

The Feltham fatberg fiasco has prompted Thames Water to circulate details of the mammoth cleanup job as part of a month-long national campaign to raise awareness of how substances and items tipped down drains can negatively impact rivers, seas, and the wider environment. The company says it spends £18 million clearing 3.8 billion wipes from its network every year, with over 28,000 rag blockages cleared so far in 2025 alone.