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Executive overview
Key findings
£11 billion: Ofwat's AMP8 total expenditure allowance for 2025–2030 (final determination, December 2024)
593 Ml/d: daily deficit by 2050 if no action is taken (WRMP24 projection)
215.27 Ml/d: leakage in 2025/26 (actual), against a WRMP target of 182.9 Ml/d
280 km: Strategic Pipeline constructed by June 2026, of a 580 km network planned to 2032
02
Buyer relevance
Who the report is for
Infrastructure contractors and engineering consultancies
Size the work behind the 580 km interconnecting grid, the Fens and Lincolnshire reservoirs and the delivery routes that hold it.
Network technology and leakage specialists
Understand why leakage reached 215.27 Ml/d against a 182.9 Ml/d target and where mains renewal stands.
Investors and credit analysts
See the CMA redetermination, gearing measures, ratings and Ofwat's monitoring category in one place.
Regional planners and public bodies
Weigh the 593 Ml/d deficit outlook and drought restrictions against growth plans in the East of England.
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Decision scope
Questions answered
How large is Anglian Water's long-term supply gap?
Its 2024 Water Resources Management Plan projects a 593 Ml/d daily deficit by 2050 without action, with 23 of 27 water resource zones short.
How far has the interconnecting grid progressed?
280 km had been built by June 2026 of a 580 km network, with Phase 1 (320 km) due in spring 2028, a schedule the company said in July 2026 it was reviewing, and Phase 2 (260 km) by spring 2032.
What did the CMA redetermination change?
It set an indicative average bill of £602 in 2022-23 prices, against Ofwat's £591, and the company reports the cost of equity rising from 5.10% to 5.70%.
How did the network perform in the 2025/26 dry year?
Reactive mains repairs rose from 3,842 to 4,633 and leakage reached 215.27 Ml/d, while properties affected by interruptions fell to 412,294.
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Inside the report
Inside the complete report
Executive Overview
1. Water Resource Profile
2. Governance and Institutional Framework
3. Infrastructure and Service Delivery
Strategic Outlook and Opportunities
Source Register
05
Public preview
What to watch next
1. Water Resource Profile
The lifting date of the Temporary Use Ban and whether Grafham Water refills over winter 2026/27; leakage in 2026/27 against the 182.9 Ml/d target; the next WRMP annual review.
2. Governance and Institutional Framework
Ofwat's cost change final decisions in December 2026; introduction of the Water Reform Bill and the Transition Plan; Ofwat's next financial resilience categorization; progress against the 65% gearing target.
3. Infrastructure and Service Delivery
Calendar 2026 pollution results against the 72% serious-incident ambition; reactive mains repairs and leakage in 2026/27; the DWI Chief Inspector's compliance score for 2025.
Strategic Outlook and Opportunities
Completion of Phase 1 of the Strategic Pipeline by spring 2028, a schedule the company said in July 2026 it was reviewing; the Fens DCO submission date; the outcome of the Lincolnshire third-phase consultation; desalination site selection; the second AMP8 Delivery Plan; and whether the reform program changes how reservoirs and desalination are funded before PR29.
Asset base and 2025/26 water and wastewater service indicators, with sources and benchmarks.
06
Included
What you receive
The complete PDF report: 12 pages, 6 sections, 13 tables and a register of 24 sources.
This edition
November 2026, First edition.
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Evidence & method
Evidence and method
The report draws on Anglian Water's 2025/26 annual report, full-year results and Annual Performance Report, its water resources and climate plans, and determinations and performance reports from Ofwat, the Competition and Markets Authority, the Environment Agency and the Drinking Water Inspectorate. Drought and project status were checked against public sources to October 30, 2026.
Sources
24 sources, listed in the report's source register. Evidence current to 6 November 2026. Principal data periods: FY 2025/26 (year ended March 31, 2026) annual report, results and Annual Performance Report; calendar 2025 environmental data; AMP8 price control 2025–2030; drought status to October 30, 2026. All currency is pounds sterling (£)..
Evidence boundaries
This report uses authoritative source material available at the stated research cutoff. It distinguishes published facts, calculated values and analytical interpretation. No independent modelling is performed. Forward-looking analysis reflects published plans, documented trends and stated uncertainties. It does not constitute legal, financial, investment or engineering advice.
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Lead analyst
Robert C. Brears
Founder, Our Future Water Intelligence
Robert C. Brears is a water-security specialist and author whose work examines utility governance, infrastructure investment, climate resilience and long-term water-system change for executive and policy audiences.
- Decision-focused utility intelligence
- Published water-policy author
- Evidence-grounded system analysis
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Buyer FAQs
Before you purchase
Who can use the report?
Licensed for internal use within one purchasing organization. The PDF and its contents may be shared with colleagues within that organization. External redistribution, resale and public publication are prohibited without permission.
How is the report delivered?
The PDF is available to download immediately after confirmed payment, through our secure delivery system.
Can my organization buy wider access?
Institutional purchasing: For invoice enquiries, multi-organization licensing or broader access requirements, contact Our Future Water Intelligence.
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Water Systems Overview: Anglian Water
- Format
- Length
- 12 pages
- Edition
- November 2026, First edition
- Price
- USD 499
11
Report details
Publication details
- Publisher
- Our Future Water Intelligence
- Report family
- Water Utility Intelligence Report
- Edition
- November 2026, First edition
- Format
- Length
- 12 pages
- Reference
- OFW_EXT_WATER_SYSTEMS_OVERVIEW_ANGLIAN_WATER_869e904fd2e0
- Evidence current to
- 6 November 2026
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