| 2007-02 |
Nippon Gaisi and Fuji Electric reached a basic agreement on the integration of water environment business. |
| 2007-04 |
Nippon Gaisi transferred its environmental-related business to its subsidiary, NGK Water Environment Systems Co., Ltd. |
| 2007-04 |
Fuji Electric transferred its water environment business to its subsidiary, Fuji Electric Water Environment Systems Co., Ltd. |
| 2008-04 |
Meta Water Co., Ltd. was established through the merger of NGK Water Environment Systems and Fuji Electric Water Environment Systems. |
| 2008-04-01 |
Established on April 1, 2008 |
| 2009-07 |
Acquired the environmental business of Climot Technologies Co., Ltd. |
| 2011-04 |
Launched a new business, Water Business Cloud (WBC), to support water supply and wastewater services. |
| 2012-04 |
The 'Omuta-Arago Joint Water Treatment Plant (Arika Water Treatment Plant)' began operation as a DBO project for water treatment plant renewal by two municipalities across the prefectural border. |
| 2012-12 |
First delivery of vehicle-mounted ceramic membrane water purification units to Africa (Republic of Malawi, Republic of Kenya, Republic of Togo). |
| 2013-01 |
Established METAWATER USA, INC. in the United States as our first overseas local corporation. |
| 2013-03 |
Entered into a business partnership with Suidō Kiko Co., Ltd. |
| 2013-04 |
Relocated headquarters from Toranomon, Minato-ku, Tokyo to Kanda-Suda-cho, Chiyoda-ku, Tokyo. |
| 2013-04 |
Established a Phnom Penh liaison office in Cambodia. |
| 2013-06 |
Assumed the capital increase of I/O Co., Ltd., a subsidiary of Nissui Con Co., Ltd. |
| 2013-06 |
Entered into a business partnership with Kokusai Kōgyō Co., Ltd. |
| 2013-06 |
Entered into a business partnership with PWN Technologies of the Netherlands. |
| 2013-08 |
Assumed a third‑party capital increase of Rood Wit Blauw Holding B.V. (Netherlands) and formed a capital and business partnership. |
| 2013-10 |
In partnership with Fujitsu Ltd., began providing the water supply and wastewater infrastructure management service 'Smart FieldService'. |
| 2014-04 |
Established Hybrid Chemical Co., Ltd., a pharmaceutical business, through joint investment with a subsidiary of Tsukishima Machinery Co., Ltd. |
| 2014-04 |
Launched the 'Onagawa Town Fishery Processing Complex Sewage Treatment Facility Development Project' as Japan's first independent‑accounting PFI project in plant operation (Onagawa Town, Miyagi Prefecture). |
| 2014-04 |
Commenced the 'Takizawa Waterworks Renewal and Maintenance Project' as a comprehensive water facility development from water intake to tap (Aizuwakamatsu City, Fukushima Prefecture). |
| 2014-05 |
Started a pilot experiment in waterworks maintenance inspections using big‑data analytics and wearable devices in collaboration with Fujitsu Ltd. |
| 2014-09 |
Established Meta Water Tech Co., Ltd., responsible for the maintenance and management of water supply and wastewater facilities. |
| 2014-11 |
The 'Simultaneous Nitrification–Denitrification Treatment System' jointly researched with the Tokyo Metropolitan Waterworks Bureau and Tokyo Metropolitan Waterworks Service Co., Ltd. received the Excellence Award at the 2014 Nikkei Earth Environment Technology Awards. |
| 2014-12 |
Listed on the First Section of the Tokyo Stock Exchange. |
| 2014-12 |
Commenced the 'Toyokawa Purification Center Sludge Treatment Facility Development and Operation Project', the first domestic sewage project to adopt the RO method. |
| 2015-01 |
The world's largest waterworks ozone system began operation in the United States (Wylie Waterworks, Texas). |
| 2015-02 |
Signed an agreement with the Yokohama City Waterworks Bureau for the water source eco‑project 'W‑eco·p' (Wicop). |
| 2015-03 |
Received the Gold Award in the Water Technology Company of the Year category at the 2015 Global Water Awards. |
| 2015-04 |
Commenced collaboration with NTT DATA Corporation in the water supply and wastewater service sector. |
| 2015-09 |
Launched the TBS Radio program 'Meta Water presents Mizuo (Water Sound) Sketch' on air. |
| 2015-10 |
First contracted for a PFI‑based recycling facility development and operation project (Gotemba City & Oyama Town Regional Administrative Association waste re‑resource facility). |
| 2016-01 |
Fully acquired Aqua‑Aerobic Systems, Inc., a U.S. water treatment engineering company. |
| 2016-12 |
Obtained ISO 55001 certification (Asset Management System). |
| 2017-11 |
Established the 'Equipment Operator Training Center' anticipating the integration and expansion of water supply and wastewater operations. |
| 2017-11 |
Established the satellite space 'Island' as part of work‑style reform. |
| 2018-03 |
Received a third-party allotment of shares in Sky Seeker Inc., and formed a capital and business alliance |
| 2018-04 |
10th anniversary of establishment |
| 2018-09 |
Announced new corporate philosophy "Keep Going. To Continue." |
| 2019-02 |
Established Singapore Representative Office |
| 2019-10 |
Conducted share buyback and tender offer for own shares |
| 2020-04 |
Fully acquired Wigen Companies, Inc. in the United States to expand North American business |
| 2021-01 |
Disposed of own shares through third-party allotment and canceled shares |
| 2021-04 |
Launched the first concession business in Japan in the industrial water supply sector, "Kumamoto Prefectural Ariake and Yatsushiro Industrial Water Supply Operation Business" |
| 2022-04 |
Started the first integrated concession project in Japan involving water, industrial water, and sewage, "Miyagi Prefecture Kamikou Sewage Integrated Public-Private Partnership Operation" |
| 2024-02 |
Completed the first public sewage facility in Phnom Penh, Kingdom of Cambodia |
| 2024-04 |
Announced purpose: "Coexist with the community, protect water and environmental circulation, and support people's lives" |
| 2025-03 |
Established Phnom Penh branch in the Kingdom of Cambodia |
| 2025-04 |
Acquired all shares of Schwing Bioset, Inc. in the United States |
