Our biggest upgrade in 150 years
London and the Thames Valley
A record-breaking investment of over £20 billion to fix leaks, reduce pollution, and protect water quality, upgrading water and wastewater services for generations to come.
Thames Water is undertaking its biggest upgrade in 150 years, investing over £20 billion to fix leaks, reduce pollution, and protect water quality. This ground-breaking programme aims to upgrade water and wastewater services for generations to come, funded by customer bills. The company manages a vast network of over 140,000km of water pipes and sewers, a legacy built upon Sir Joseph Bazalgette's 19th-century sewer network design.
Facing challenges from a doubled population and extreme weather, Thames Water is committed to keeping the region flowing. 7 billion, averaging over £7 million daily. This investment included replacing 88km of leaky water mains, installing 250,000 smart meters, upgrading sewage treatment works, cleaning 1,700km of pipes, and enhancing 37 water quality sampling facilities.
London and the Thames Valley
A record-breaking investment of over £20 billion to fix leaks, reduce pollution, and protect water quality, upgrading water and wastewater services for generations to come.

Central London
Replacing leakiest water mains.
Guildford
Construction of a new treatment works to increase treatment capacity.
Shutford, Oxfordshire
Upgrade of sewage treatment works.
This profile was compiled from public records. Claim it to add the things buyers ask for:
We take care of the water for 16 million people, enabling our customers, communities, and environment to thrive. Their listed services include Civil engineering, Utilities and Drainage.
Thames Water Investments Ltd is registered at Clearwater Court, Vastern Road, Reading, RG1 8DB, in South East.
Thames Water Investments Ltd states that it works across Nationwide.
Thames Water Investments Ltd does not disclose turnover: UK small-company accounts are not required to. Based on trade debtors in its filed accounts, turnover is likely to fall between £100k and £270k. This is an estimate, not a filed figure.
Companies House lists Thames Water Investments Ltd as active, with accounts most recently made up to 2024-09-30.
Thames Water Investments Ltd works in Infrastructure and Energy.
Thames Water Investments Ltd was incorporated on 1990-12-10.
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