| Company name | Japanese name | 東京水道株式会社 | ||
|---|---|---|---|---|
| English name | Tokyo Water Co., Ltd. | |||
| Head office | Location | Shinjuku i-LAND Tower 37F, 6-5-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-1337, Japan | ||
| Telephone | +81-3-3343-4560 | |||
| Founded | August 1966 | |||
| Established | April 5, 2004 | |||
| Representative | President Kazusa Noda | |||
| Board of Directors | Information about the Board of Directors (as of April 10, 2026) | |||
| Capital funds | 100,000,000 yen | |||
| No. of employees | Approx. 2,800 | |||
| Description of business | 1.Pipeline facility management | |||
| 2.Purification facility management | ||||
| 3.Consulting and research | ||||
| 4.Customer services | ||||
| 5.IT services | ||||
| 6.Other areas of business | ||||
| Shareholders（Shareholding ratio） | Tokyo Metropolitan Government （Bureau of Waterworks）（80.4％） | |||
| Sompo Japan Insurance Inc.（6.7％） | ||||
| Mizuho Bank, Ltd.（5.0％） | ||||
| Mizuho Trust & Banking Co., Ltd.（3.5％） | ||||
| Tokio Marine & Nichido Fire Insurance Co., Ltd.（2.3％） | ||||
| Fukoku Mutual Life Insurance Company（2.1％） | ||||
| articles of incorporation | Articles of incorporation | |||
| License | Privacy Mark （Registration no.: 11820050（14）） | |||
| JIS Q 9001:2015 （Quality Management System）（Registration no.: JUSE-RA-638） | ||||
| JIS Q 27001:2023 （Information Security Management System）（Registration no.: JUSE-IR-010） | ||||
| License for Worker Dispatching Undertakings （License no.: 派13-314681） | ||||
| PUC Co., Ltd. | TSS Tokyo Water Co., Ltd | ||||||
| 1966 | Incorporated foundation established with an office in Otemachi, Chiyoda Ward. | 1966 | |||||
| 1985 | Head office relocated to Shinjuku Kokusai Building, and Shinjuku Center opened. | 1985 | |||||
| 1987 | 1987 | Water General Service Co., Ltd. established. | |||||
| 1997 | 1997 | Head office relocated to 6-14-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo. | |||||
| 2001 | 2001 | Renamed Tokyo Water Service Co., Ltd. | |||||
| 2002 | Water rate network system for Tokyo Metropolitan Government Bureau of Waterworks launched. | 2002 | |||||
| 2004 | PUC Co., Ltd. established. | 2004 | |||||
| 2005 | Tama District water rate network system for Tokyo Metropolitan Government Bureau of Waterworks launched. Customer Center operations for Tokyo Metropolitan Government Bureau of Waterworks launched. | 2005 | |||||
| 2006 | 2006 | ||||||
| The Tokyo Metropolitan Government Bureau of Waterworks adopts policy for construction of comprehensive operating structure and is designated by the Tokyo Metropolitan Government as a Supervising Organization. | The Tokyo Metropolitan Government Bureau of Waterworks adopts policy for construction of comprehensive operating structure and is designated by the Tokyo Metropolitan Government as a Supervising Organization. | ||||||
| 2006 | Tama Customer Center operations for Tokyo Metropolitan Government Bureau of Waterworks launched. | 2006 | |||||
| 2008 | 2008 | Ward area water service installation contract work launched. | |||||
| April 2009 | April 2009 | Contract work for ward area water distribution pipe design and main pipe design and construction supervision work launched. | |||||
| 2011 | Management of Bureau of Waterworks Tokyo Metropolitan Government office launched in ward area. | 2011 | |||||
| 2019 | 2019 | Received the Minister of Health, Labour and Welfare Award in the third Infrastructure Maintenance Awards for efficient leak detection method using time integration-type leak detectors. Tokyo Waterworks Day designated. | |||||
| Apr. 1, 2020 | Apr. 1, 2020 | ||||||
TSS Tokyo Water Co., Ltd. launched business as a comprehensive provider of water supply
services. |
TSS Tokyo Water Co., Ltd. launched business as a comprehensive provider of water supply
services. |
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| 2020 | 2020 | ||||||
| Management of Setagaya office launched. | Management of Setagaya office launched. | ||||||
| 2021 | 2021 | ||||||
| Management of Bunkyo office launched. Contract work to maintain eight water supply stations in the southwest part of the ward area launched. |
Management of Bunkyo office launched. Contract work to maintain eight water supply stations in the southwest part of the ward area launched. |
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| 2022 | 2022 | ||||||
| Management of Katsushika office launched. Contract work to maintain eight water supply stations in the northwest part of the ward area launched. |
Management of Katsushika office launched. Contract work to maintain eight water supply stations in the northwest part of the ward area launched. |
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| 2023 | 2023 | ||||||
| Management of Shibuya office launched. Contract work to comprehensively manage two purification plants aside from the Nagasawa Purification Plant launched. Contract work for maintenance of Tamagawa water supply station launched. |
Management of Shibuya office launched. Contract work to comprehensively manage two purification plants aside from the Nagasawa Purification Plant launched. Contract work for maintenance of Tamagawa water supply station launched. |
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| 2024 | 2024 | ||||||
| Management of Arakawa and Sumida offices launched. Contract work to maintain Kohoku water supply station launched. |
Management of Arakawa and Sumida offices launched. Contract work to maintain Kohoku water supply station launched. |
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| 2025 | 2025 | ||||||
| Management of Minato and Suginami offices launched. Contract work to comprehensively manage waterworks operations in the Akiruno area launched. |
Management of Minato and Suginami offices launched. Contract work to comprehensively manage waterworks operations in the Akiruno area launched. |
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| 2026 | 2026 | ||||||
| Management of Shinjuku and Koto offices launched. (currently managing 16 of 21 locations) Contract work to comprehensively manage one purification plant aside from the Ozaku Purification Plant launched. |
Management of Shinjuku and Koto offices launched. (currently managing 16 of 21 locations) Contract work to comprehensively manage one purification plant aside from the Ozaku Purification Plant launched. |
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Company introduction video
