| 2002 |
- Establishment of Veolia Water Japan K.K.
- Jenets Co., Ltd. joined the Group, marking the launch of water meter reading and tariff collection services for municipalities in Japan.
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| 2005 |
- Showa Kankyo System Co., Ltd. (formerly Showa Engineering Co., Ltd.) joined the Group, launching water EPC (Engineering, Procurement, and Construction) services for the private sector in Japan.
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| 2006 |
- Launched water O&M (Operation and Maintenance) services for the public sector in Japan.
- Nishihara Environment Co., Ltd. joined the Group, launching public sector water EPC services and expanding O&M operations.
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| 2007 |
- Nihon Josui Kanri K.K. joined the Group.
- Japan Environment Clear K.K. joined the Group.
- Fuji Subsurface Information Co., Ltd. joined the Group, launching pipe network management and leak detection services in Japan.
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| 2008 |
- Nichijo Co., Ltd. joined the Group.
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| 2011 |
- Eco Creative Japan Co., Ltd. joined the Group, launching water O&M services for the private sector (renamed to Veolia Water Industries Japan K.K. in 2012).
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| 2012 |
- Establishment of Veolia Water JIO K.K.
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| 2014 |
- Establishment of K.K. V T Energy Management launching renewable energy business development in Japan.
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| 2015 |
- Veolia Water Japan K.K. renamed to Veolia Japan K.K.
- Jenets Co., Ltd. renamed to Veolia Jenets K.K.
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| 2016 |
- Merger of four entities: Veolia Jenets K.K., Veolia Water Industries Japan K.K., Veolia Water JIO K.K., and Showa Kankyo System Co., Ltd., centralizing all operations under Veolia Jenets K.K. as the operating company.
- Green Loop Inc. (Kikugawa, Shizuoka) and Ecos Factory Inc. (Honjo, Saitama) joined the Group, launching plastic recycling operations in Japan.
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| 2018 |
- Launched Japan’s first-ever sewage system concession project at the Hamamatsu City Public Sewage Treatment Plant (Hamamatsu, Shizuoka) through Hamamatsu Water Symphony K.K.
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| 2019 |
- Establishment of Funabashi Biomass Energy (Funabashi, Chiba), launching biogas power generation and electricity retail business in Japan.
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| 2021 |
- Taiyo Service Inc. joined the Group, launching industrial waste treatment services in Japan.
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| 2022 |
- Launched the Miyagi Prefecture Integrated Water, Sewage, and Industrial Water Supply Public-Private Partnership (PPP) through Mizumusubi Management Miyagi Co., Ltd. and Mizumusubi Service Miyagi Co., Ltd.
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| 2023 |
- Veolia Japan K.K. transitioned its corporate structure to Veolia Japan G.K. (Godo Kaisha).
- Launched PET bottle recycling operations with the start of operations at Circular Pet Co., Ltd.
- Aoki Environment Enterprise Co., Ltd. joined the Group.
- K.K. Ecology Force established following a company split of Japan Environment Clear K.K. inheriting public sector water O&M operations.
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| 2025 |
- Goi Coast Energy Co., Ltd. joined the Group, launching on-site energy supply services for industrial plants in Japan.
- Zeeklite Co.,Ltd. joined the Group, launching controlled landfill business in Japan.
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