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Executive overview
Key findings
13,928,448: population served in FY2025, through 27,639 km of distribution mains
JPY 322.3 billion: operating revenue in FY2024, against operating expenses of JPY 333.2 billion
JPY 306.4 billion: enterprise bonds outstanding at the end of FY2024, up from JPY 230.9 billion at the end of FY2015 (calculated)
2,475 yen: monthly household bill for 20 m³ (FY2024), with tariffs to be held at their current level through FY2028 (plan)
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Buyer relevance
Who the report is for
Analysts covering Japanese public utilities
Compare the Ministry of Internal Affairs and Communications indicators with the Bureau's own measures, side by side for FY2024.
Suppliers and contractors new to Tokyo
Get the plant list, network figures and major project timetable in one reference before a first meeting.
Peer water utilities and consultants
Benchmark leakage, renewal rate, revenue water and emissions against a system serving 13,928,448 people.
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Decision scope
Questions answered
How much debt does Tokyo's water supply carry?
Enterprise bonds outstanding were JPY 306.4 billion at the end of FY2024, up from JPY 230.9 billion at the end of FY2015.
Is the water business profitable?
It made an operating loss of JPY 10.9 billion in FY2024, though net profit was JPY 1,230 million.
What does a household pay?
A monthly bill for 20 m³ was 2,475 yen in FY2024, and the Management Plan 2026 holds tariffs at their current level through FY2028.
How much of its capital plans does the Bureau deliver?
It delivered 93.6% of planned capital spending under the Management Plan 2016 and expects 91.9% under the Management Plan 2021.
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Inside the report
Inside the complete report
Executive Overview
1. Utility and Service Mandate
2. Water Resources and Supply
3. Infrastructure and Treatment
4. Networks and Assets
5. Financial Position
6. Investment and Major Projects
7. Tariffs and Customer Context
8. Energy and Sustainability
9. Governance and Regulation
10. Climate and Resilience
11. Forward Developments
12. Key Intelligence Summary
Source Register
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Public preview
What to watch next
5. Financial Position
FY2025 settlement statements, the cumulative fund balance against the plan, and the current ratio.
6. Investment and Major Projects
FY2026 actual capital expenditure against the JPY 149.4 billion plan.
7. Tariffs and Customer Context
Any decision on a 2027 waiver and the tariff review after FY2028.
11. Forward Developments
Whether the tariff level is reviewed when the next medium-term plan is drafted for FY2029 onward.
The financial position section sets the FY2015 to FY2024 accounts beside two sets of management indicators for FY2024.
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Included
What you receive
The complete PDF report: 12 pages, 14 sections, 20 tables and a register of 16 sources.
This edition
October 2026 edition.
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Evidence & method
Evidence and method
The profile draws on the Water Supply Business Account statements for FY2015 to FY2024, the Bureau's Business Outlines, plan tracking tables, the Ministry of Internal Affairs and Communications comparison sheet, environmental reports and customer reports. Plans and tariffs are taken from the Management Plan 2026 and current Tokyo Metropolitan Government releases.
Sources
16 sources, listed in the report's source register. Evidence current to 29 October 2026. Principal data periods: Water Supply Business Account statements FY2015 to FY2024 and operating statistics to FY2025 (Japanese fiscal years, April to March; FY2025 ended 31 March 2026); Management Plan 2026 (FY2026 to FY2028). Status checked against public sources on 29 October 2026. All currency is Japanese yen (JPY)..
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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Utility Intelligence Profile: Tokyo Metropolitan Government Bureau of Waterworks
- Format
- Length
- 12 pages
- Edition
- October 2026 edition
- Price
- USD 99
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Report details
Publication details
- Publisher
- Our Future Water Intelligence
- Report family
- Utility Intelligence Profile
- Edition
- October 2026 edition
- Format
- Length
- 12 pages
- Reference
- OFW_EXT_TOKYO_METROPOLITAN_GOVERNMENT_BUREAU_OF_WATERWORKS_UTILITY_INTELLIGENCE_PROFILE_3c8589ec7572
- Evidence current to
- 29 October 2026
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