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. |
2020 |
2020 |
Management of Setagaya office launched. |
Management of Setagaya office launched. |
2021 |
2021 |
Management of Bunkyo office launched. Contract work to manage eight
water supply stations in the southwest part of the ward area launched. |
Management of Bunkyo office launched. Contract work to manage eight
water supply stations in the southwest part of the ward area launched. |
2022 |
2022 |
Management of Katsushika office launched. Contract work to manage
eight water supply stations in the northwest part of the ward area launched. |
Management of Katsushika office launched. Contract work to manage
eight water supply stations in the northwest part of the ward area launched. |
2023 |
2023 |
Management of Shibuya office launched. Contract work to
comprehensively manage two purification plants aside from the Nagasawa Purification Plant
launched. |
Management of Shibuya office launched. Contract work to
comprehensively manage two purification plants aside from the Nagasawa Purification Plant
launched. |
2024 |
2024 |
Management of Arakawa-Sumida office launched. (Currently managing 12
of 23 offices.) Contract work for maintenance of Tamagawa water supply station launched. |
Management of Arakawa-Sumida office launched. (Currently managing 12
of 23 offices.) Contract work for maintenance of Tamagawa water supply station launched. |