Analysis of information sources in references of the Wikipedia article "Fatberg" in English language version.
The consummate cautionary tale is that of London, where in 2013 a collection of wipes, congealed cooking oil and other materials totaled 15 [metric] tons, according to Thames Water, the utility company that removed it. It was known, like some previous occurrences, as the fatberg. "We reckon it has to be the biggest such berg in British history," Gordon Hailwood, an official with Thames Water, said at the time.