[2] In October 2006, Biffa was de merged from the group Severn Trent, and was subsequently listed separately on the London Stock Exchange.

[6] In September 2007, the company announced they would be closing its headquarters in Birmingham and relocating to a custom built office complex in the centre of Coventry in the autumn of 2010.

[16] In July 2008, the company was fined £2m (reduced from a previous judgement of £4m) for poor information reporting and covering up misleading leakage data.

[17] Despite improvements, according to Ofwat, the percentage of leakages from 2010 to 2011 was the highest in England and Wales, at 27%, representing 0.5 billion litres (500,000 tonnes) per day.

[21] On 20 February 2024, Severn Trent Water was fined over £2 million for discharging more than 260 million litres of raw sewage into the River Trent from its Strongford Treatment Works, an incident that occurred between November 2019 and February 2020 but avoided catastrophic pollution due to high river flows from storms.

[22] In December 2024, Severn Trent Water was accused by the BBC's Panorama of an accounting trick artificially inflating its balance sheet by more than a billion pounds.