Thames Water, a privately owned company headquartered in the UK, employs approximately 5,630 individuals and operates as a utilities provider. The company serves around 15 million customers across London and the Thames Valley, providing clean water and managing wastewater for approximately 25 percent of the UK population. It conducts over 400,000 tests per year on its drinking water and invests over £1 billion annually to improve its networks and infrastructure, encompassing pipes, sewerage treatment, and clean water treatment plants. Thames Water also generates electricity, capable of powering over 55,000 homes, and implements sustainability and education programs in schools while managing a number of nature reserves.
Thames Water indicated on August 20, 2026, that its hosepipe ban, affecting 10.1 million customers, will likely remain in force until the end of the year to protect the environment following a record-breaking dry summer. This contributes to more than 27 million people currently facing water restrictions across England, after the company enforced the restrictions last month when most of England and Wales was declared in drought. Earlier on August 20, Barhale began preparations to reline part of the Southern Inlet abstraction tunnel at Ashford Common Water Treatment Works in Surrey, following inspections that identified defects in the existing glass-reinforced plastic lining, a contract stemming from mandatory five-year inspections. On August 19, Costain secured a contract from Thames Water to deliver approximately £150 million in wastewater treatment upgrades across 15 sites in the Thames Valley region, as part of Thames Water’s Wastewater Asset Assurance Programme (WAAP). The same day, the imposition of a hosepipe ban in Abingdon, Oxfordshire, highlighted a decades-long debate surrounding water usage and provision in the Thames Basin, including discussions about building Britain's first reservoir in 35 years to serve the entire South East.
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