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Thames Water Utilities Limited, commonly known as Thames Water, is the UK's largest water and wastewater services company. It is responsible for the public water supply and wastewater treatment in large parts of Greater London, the Thames Valley, Surrey, Gloucestershire, Wiltshire, Kent, and some other areas of the United Kingdom. The company serves approximately 15 million wastewater customers and 10 million clean water customers across an area of 5,000 square miles. It manages 351 sewage treatment works, 102 water treatment works, 20,000 miles of water pipes, and 68,000 miles of sewers. The company faces significant challenges regarding infrastructure investment, leakage reduction, environmental performance, and financial stability.
Serves as the central administrative and operational hub for Thames Water, housing key departments such as executive leadership, strategic planning, finance, customer services management, and corporate affairs.
Clearwater Court is a modern office complex located near Reading railway station, designed to consolidate various functions of the company. It likely features contemporary office amenities and infrastructure to support a large workforce.
The work culture at Thames Water's HQ is generally professional, focused on delivering essential public services. There's an emphasis on operational efficiency, customer service, and increasingly, environmental responsibility and regulatory compliance, though it has faced public scrutiny and employee morale challenges.
The Reading HQ is critical for coordinating the vast operations of the UK's largest water utility, managing complex infrastructure, stakeholder relations, and responding to regulatory and environmental pressures.
Thames Water's operations are exclusively focused on the United Kingdom, specifically within its designated service area in London and the Thames Valley. It does not have an international operational presence. Any international engagement would typically be through consultancy, knowledge sharing with other utilities, or through its international investors.
Clearwater Court, Vastern Road
Reading
Berkshire
United Kingdom
Address: Kemble Court, Kemble, Swindon, SN2 8NG (Operational/Customer Service Centre)
Supports operations and customer service for the western sector of Thames Water's territory, including parts of Wiltshire and Gloucestershire.
Address: Maple Lodge Sewage Treatment Works, Maple Cross, Rickmansworth, WD3 9SQ (Major Operational Site)
Key infrastructure for wastewater treatment in the northern part of their operational area, vital for environmental protection of local watercourses.
Address: Mogden Sewage Treatment Works, Mogden Lane, Isleworth, TW7 7LR (Major Operational Site)
Essential infrastructure for treating wastewater for millions of Londoners, playing a key role in the health of the River Thames.
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As of April 2025, Thames Water' leadership includes:
Thames Water has been backed by several prominent investors over the years, including:
Thames Water has experienced significant leadership turnover in the past year, including the departure of its CEO Sarah Bentley, the appointment of interim co-CEOs, and subsequently a new permanent CEO, Chris Weston. The CFO role has also seen changes.
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Thames Water typically uses a standard email format for its employees, which is [first].[last]@thameswater.co.uk. Variations may exist for specific departments or roles, but this is the most common structure.
[first].[last]@thameswater.co.uk
Format
john.smith@thameswater.co.uk
Example
90%
Success rate
Financial Times • April 10, 2024
Analysis of the potential scenarios if Thames Water collapses, including the possibility of temporary public ownership, as the company struggles with debt and securing new funding....more
BBC News • March 28, 2024
Thames Water's parent company, Kemble Water, announced that shareholders would not provide a further £500m of equity funding because conditions set by regulator Ofwat had made its business plan 'uninvestable'....more
Thames Water • January 10, 2024
Chris Weston officially started his role as Chief Executive Officer of Thames Water, tasked with leading the company's turnaround plan and addressing its operational and financial challenges....more
The Guardian • December 8, 2023
Thames Water named Chris Weston, former CEO of Aggreko, as its new chief executive, taking over from interim co-CEOs Cathryn Ross and Alastair Cochran....more
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