Thames Water
Thames Water Utilities Limited is the UK's largest regulated water and wastewater monopoly, supplying 2.6 billion litres of drinking water daily and treating 4.6 billion litres of sewage for 16 million customers across London and the Thames Valley.
- Company typePrivate
- Founded1989
- HeadquartersReading, United Kingdom
- Headcount5,001–10,000
- GTM typeB2C
- OfferingServices
What Thames Water does
Thames Water Utilities Limited is the UK's largest water and wastewater company, providing essential regulated services to approximately 16 million customers across London, the Thames Valley, and surrounding Home Counties. The company operates an extensive network infrastructure spanning 31,500 miles of water mains and 68,000 miles of sewers, supplying 2.6 billion litres of drinking water and treating 4.6 billion litres of sewage daily. The company traces its origins to the early 1800s, was incorporated in 1989, and has been owned since 2006 by a consortium of institutional investors led by Kemble Water Holdings Limited (with shareholders including OMERS, Universities Superannuation Scheme, China Investment Corporation, Abu Dhabi Investment Authority, and British Columbia Investment Management Corporation). The legal entity is structured under a whole business securitisation with multiple intermediate financing subsidiaries.
The company's core product offering consists of water supply, wastewater collection and treatment, and supplementary services including property searches (CON29DW reports), developer connections, and wholesale services to retailers. It is executing a £20 billion AMP8 investment programme for 2025-2030 targeting pipe renewal, leakage reduction, and pollution reduction. Technology initiatives include the Origin Orbit AI-powered satellite leak detection system (partnered with Origin Tech), digital twin technology for asset management, and over 1.1 million installed smart meters for consumption monitoring. Customer engagement and billing are being modernised through a three-year partnership with Qualco UK deploying its Collections and Recoveries platform.
Thames Water operates as a regulated monopoly utility under pricing determinations set by Ofwat, generating approximately 95% of revenue from regulated household bills averaging £470 in 2024-25, with planned real-terms increases of approximately 40% over the 2025-2030 period. FY2024-25 underlying revenue reached £2,603 million and H1 2025-26 underlying revenue reached £1,880 million (up 42% year-on-year). The company is in severe financial distress, carrying £17.6 billion of statutory net debt and navigating active recapitalisation; the UK government rejected a £10 billion creditor rescue package in June 2026, raising the prospect of Special Administration (temporary nationalisation). Ofwat fined Thames Water a record £122.7 million in July 2025 for sewage spills and illegal dividend payments, and the Environment Agency rated the company 1-star (worst among nine English water and sewerage companies) in its 2024 assessment.
Thames Water firmographics
Firmographics- Name
- Thames Water
- Legal name
- Thames Water Utilities Limited
- Website
- https://thameswater.co.uk
- Company type
- Private
- Founded year
- 1989
- Operating status
- Operating
- Headcount range
- 5,001–10,000 employees
- Short description
- Thames Water Utilities Limited is the UK's largest regulated water and wastewater monopoly, supplying 2.6 billion litres of drinking water daily and treating 4.6 billion litres of sewage for 16 million customers across London and the Thames Valley.
- Ownership category
- akta.pro rank
Thames Water industry classification
Industry- Product category
- Water and Wastewater Utility Services
- NAICS
- Water, Sewage and Other Systems (2213), Sewage Treatment Facilities (22132), Water Supply and Irrigation Systems (22131)
- SIC
- Water Supply (4941), Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Electric, Gas & Sanitary Services (4900)
- akta.pro primary industry
- Water Supply & Wastewater Utilities Administration (BPAIACAG)
- akta.pro secondary industries
- Water Resources Administration (Watersheds, Rivers, Groundwater) (BPAIAMAE), Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ), Raw Water Conveyance & Transmission (Aqueducts, Mains, Pumping Stations) (EUANAAAB)
Keywords
Where Thames Water is headquartered
LocationHeadquarters
- HQ city
- Reading
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Thames Water business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Infrastructure, Operations, Personnel, Technology or R&D, Marketing or Sales, Supply Chain
Revenue model
- Regulated Household Water and Wastewater Services: Approximately 95% of Thames Water's revenue comes from regulated household bills averaging £470 in 2024-25. The company supplies 2.6 billion liters of drinking water and treats 4.6 billion liters of sewage daily.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Standard household water and wastewater tariff |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels4 records
Thames Water product offering
Product offeringCore offering
Thames Water supplies clean drinking water and provides wastewater collection and treatment services to approximately 16 million residential and business customers across London and the Thames Valley under a regulated monopoly framework. The company operates 31,500 miles of water mains and 68,000 miles of sewers, supplying 2.6 billion litres of drinking water and treating 4.6 billion litres of sewage daily. Supplementary services include property searches, developer connections, wholesale non-household supply, and customer financial assistance schemes (WaterHelp and WaterSure).
Product overview
Thames Water operates as a single unified water and wastewater utility service, not a modular platform. The company provides core water supply and sewage treatment services to approximately 16 million customers across London and the Thames Valley. Key offerings include clean water supply, wastewater collection and treatment, property search services, developer services for new connections and infrastructure, and wholesale services for business customers and retailers. Supporting capabilities include smart water meters (over 1.1M installed), AI-powered satellite leak detection via the Origin Orbit® system, customer billing and account management, financial assistance schemes (WaterHelp, WaterSure), and the Qualco Collections and Recoveries platform for customer engagement. The company is executing its AMP8 (2025-2030) investment programme, described as the 'biggest upgrade in 150 years' with approximately £20 billion planned investment.
Differentiator
Problem solved
Functional benefit
Products and services
- Water Supply Service
Quantifiable outcome
- 20% reduction in pollutions reported in H1 2025/26
- +3 more outcomes
Companies that use Thames Water
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles3 records
Thames Water technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration2 records
AI capability3 records
Feature2 records
Thames Water partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered strategic, core and pilot.
- Typsa-StantecstrategicAnglian Water awarded a £29 million technical contract to Typsa-Stantec in January 2026 to develop desalination plants. Thames Water is mentioned in the context of broader southeast England water supply planning including desalination schemes.
- BarhalecoreAwarded a £12.5 million programme of statutory tunnel inspection and maintenance across key water infrastructure including the Thames Water Ring Main and North London Abstraction Zone assets. The programme covers almost 48km of tunnels at depths reaching 65m.
- Origin TechcoreThames Water signed a landmark 13-month contract with North East-based start-up Origin Tech to deploy AI-powered satellite leak detection technology (Origin Orbit®). This makes Thames Water the first UK water company to fully integrate the technology into day-to-day operations. The technology identifies underground leaks within a 30-metre search radius and aims to save over 100 million litres of water per day. The deal follows successful trials where Origin Orbit® found over 800 leaks and saved an estimated 8.7 million litres per day.
- Ferrovial SEcoreFerrovial, through a joint venture with Cadagua, was awarded an approximately £80 million contract to upgrade the Slough Sewage Treatment Works for Thames Water. The project, with design beginning November 2025 and construction starting about 15 months later, aims to meet updated Environment Agency wastewater quality standards.
- Qualco UKcoreThree-year strategic partnership with Qualco UK to enhance customer engagement, affordability management, and operational effectiveness. Thames Water is implementing Qualco's Collections and Recoveries platform integrated with ExtraCollect capability, replacing legacy systems with automated workflows and real-time prioritization. Atos provides SAP integration services.
- BarhalecoreBarhale secured multiple infrastructure projects under Thames Water's £200 million+ AMP8 framework for various UK locations, including construction of sewage systems and upgrades to existing infrastructure to meet growth needs and increase resilience.
- RWEcoreFive-year power purchase agreement (PPA) to supply Thames Water with 132 GWh of clean electricity annually until 2030, covering up to 15% of Thames Water's essential services power needs.
- Turner & TownsendcoreAppointed as AMP8 Regulatory Assurance Provider to support Thames Water's £20+ billion investment programme over five years (2025-2030). The role involves delivering independent assurance, overseeing major projects, and ensuring transparency and accountability in regulatory reporting.
- AtkinsRéalis and StantecstrategicJoint venture awarded contract to develop designs for the Severn to Thames Transfer project, aimed at increasing water supply during droughts. The project involves transferring water from the River Severn to the River Thames via pipeline or canals as part of Thames Water's long-term resource management plan.
- Skanska/MWH/Balfour Beatty (SMB Joint Venture)coreDesign and build partner for Thames Water's £2 billion AMP6 eight2o alliance, delivering water infrastructure projects across London from 2015 to 2020. Key projects included upgrades to Coppermills Water Treatment Works serving four million Londoners and Waterworks Bridge sewage infrastructure.
- Xylem UK&IcoreXylem UK&I supported Thames Water in large-scale refurbishment of private sewage pumping stations, implementing a scaled-up digital-enabled model that increased site upgrades to four per week over 32 weeks, achieving 130 site upgrades on schedule and within budget.
- UnifAI TechnologypilotUnifAI Technology partnered with Wessex Water (not Thames Water) on an AI-based water quality monitoring program achieving 87% accuracy in predicting high bacterial levels. Referenced in context of water sector AI innovation.
Scale indicators7 records
Recent moves6 records
Expansion highlights5 records
Thames Water competitors and assessment
Company assessmentDirect peers
- Southern Water: Southern Water serves around 2.5 million customers across the south of England and has similarly faced Ofwat fines, pollution incidents, and shareholder/creditor restructuring pressure. It is a directly comparable regulated water and wastewater utility with overlapping environmental and financial-distress themes.
- Yorkshire Water: Yorkshire Water serves around 5 million customers and operates under the same Ofwat regulatory regime. It is comparable as a regional regulated water and wastewater utility with similar AMP-cycle capex obligations and shareholder structure considerations.
- Anglian Water: Anglian Water serves around 4.3 million customers in the east of England and is pursuing similar leakage-reduction, demand-management, and desalination initiatives. Its recently appointed desalination contracts and drought-resilience strategy are directly comparable to Thames Water's AMP8 and Severn-to-Thames programmes.
- Dwr Cymru Welsh Water: Dwr Cymru Welsh Water is a not-for-profit water and sewerage company serving around 3 million customers in Wales. It is comparable to Thames Water as a regulated water and wastewater monopoly under a similar UK regulatory framework, though its ownership structure (customer-owned) differs.
- Severn Trent: Severn Trent is one of the UK's largest water and sewerage companies, serving around 8 million customers across the Midlands. It is directly comparable to Thames Water as a regulated water and wastewater monopoly under Ofwat with similar capex programs, dividend/penalty dynamics, and investor base considerations.
- Northumbrian Water: Northumbrian Water supplies water and wastewater services to around 2.7 million customers in the North East. It is a directly comparable Ofwat-regulated monopoly with overlapping capex, leakage, and environmental performance agendas.
- United Utilities: United Utilities is the largest listed water company in the UK, serving around 7 million customers in the North West of England. It is a direct peer in regulated water and wastewater services, AMP-cycle capex delivery, environmental performance improvement, and customer service metrics under the same Ofwat framework.
- Pennon Group: Pennon Group is the parent of South West Water, serving around 1.8 million customers, and is a directly comparable listed UK water utility. Notably, Thames Water's new CFO Steve Buck was previously Pennon's CFO, making it an exceptionally close operational peer.
- Wessex Water: Wessex Water serves around 2.8 million customers in the south-west of England and is similarly engaged in AI-driven water quality monitoring and regulated monopoly operations. It is directly comparable as a regional water and wastewater utility facing the same regulatory and ESG pressures.
Regional players
- Scottish Water: Scottish Water is the publicly-owned water and wastewater provider for Scotland, serving around 5 million customers. It is comparable as a regional UK water and wastewater utility with similar infrastructure investment cycles, but is regulated by the Scottish Water Commission rather than Ofwat and does not directly compete with Thames Water.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Thames Water social profiles
Digital presenceThames Water financial estimates
Financial estimateRevenue estimate
Valuation estimate
Thames Water leadership team
Management profileNumber of profiles
Profiles18 records
Thames Water subsidiaries and ownership
Company hierarchySubsidiaries6 records
Thames Water funding detail
Funding detailFunding overview
Funding rounds4 records
Investors3 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Thames Water M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Thames Water
What does Thames Water do?
Thames Water supplies clean drinking water and provides wastewater collection and treatment services to approximately 16 million residential and business customers across London and the Thames Valley under a regulated monopoly framework. The company operates 31,500 miles of water mains and 68,000 miles of sewers, supplying 2.6 billion litres of drinking water and treating 4.6 billion litres of sewage daily. Supplementary services include property searches, developer connections, wholesale non-household supply, and customer financial assistance schemes (WaterHelp and WaterSure).
Is Thames Water a public or private company?
Thames Water is a private company. It is classified as private equity controlled and is currently operating.
When was Thames Water founded?
Thames Water was founded in 1989. It employs 5,001 to 10,000 people.
Where is Thames Water based?
Thames Water is headquartered in Reading, United Kingdom, in the Europe region.
How does Thames Water make money?
One revenue line is on record: regulated Household Water and Wastewater Services.
Who are Thames Water's main competitors?
Direct peers on record are Southern Water, Yorkshire Water, Anglian Water, Dwr Cymru Welsh Water, Severn Trent, Northumbrian Water, United Utilities, Pennon Group and Wessex Water. Scottish Water is listed as a regional player.
Does Thames Water have an API?
No public API is recorded for Thames Water.
What industry is Thames Water in?
Thames Water's product category is Water and Wastewater Utility Services. Its primary akta.pro industry code is BPAIACAG, Water Supply & Wastewater Utilities Administration, with a secondary code of BPAIAMAE, Water Resources Administration (Watersheds, Rivers, Groundwater). Its NAICS code is 2213 and its SIC code is 4941.