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 On February 1, 2021, HALVO Holdings Co., Ltd. took a new step forward as a holding company operating subsidiaries with Green & Water Corp. at the core. Currently, the group operates with three operating companies under its umbrella (as of 2021). Our core company, Green & Water’s proprietary water treatment plant, the “Composite Lagoon System®,” is used by many customers, mainly pig farms, and more than 300 units have been installed throughout Japan.

 We are actively working not only in the field of wastewater treatment but also in the field of drinking water under the credo “Safe Water For All”.
Today, environmental pollution is becoming an increasingly serious problem, especially in developing countries, and the health hazards to local residents are on the rise. It is said that 800 million people in the world do not have access to safe drinking water, and many of them are forced to drink water from wells and rivers that contain heavy metals and arsenic. It is said that the world’s population will enter an era of 10 billion people, and there is concern about the shortage of drinking water. Our goal is to create a system that can produce safe and inexpensive drinking water in order to improve the world’s current situation.

We look forward to your continued guidance and encouragement.

Kazuyoshi Nagahara, President and COO

Management Philosophy

No Borders on the Earth’s Environment

We are committed to improving the world’s environment and bringing security and prosperity to people’s lives.

Contributing to Society through Innovative R&D

We do not compromise on technological development and always pursue results.

Always maintain a spirit of challenge

When in doubt, choose the path that challenges.

Company profile

Company NameHALVO Holdings Co., Ltd.
EstablishmentFebruary 1, 2017
Capital stock100,000,000 JPY

Board member
Chairman and CEO Kiichiro Yamazaki
President and COO Kazuyoshi Nagahara
Senior Managing Director and CTO Yoshiharu Yagyu
Director, Manager of Administration Department and CFO Maiko Kazama
Director Soichiro Yamazaki
Director (Outside Director) Yoshitaka Okada
Director (Outside Director) Sadaharu Tezuka
Director (Outside Director) Shogo Sekimoto
Director (Outside Director) Takuji Tshuchida
Director (Audit & Supervisory Board Member) Chizuko Nakandakari
Director (Audit & Supervisory Board Member) Takanao Mitsui
Director (Audit & Supervisory Board Member) Makoto Muranaka
AdviserSeiichiro Yonekura
Address2F Nihonbashi Horidome-cho First, 1-2-10 Nihonbashi Horidome-cho, Chuo-ku, Tokyo 103-0012, Japan
Affiliated company HALVO TRI (Technical Research Institute) Co., Ltd. (wholly owned subsidiary of HALVO Holdings)
Green & Water Corp. (wholly owned subsidiary of HALVO Holdings)
Reclis Co., Ltd. (wholly owned subsidiary of Green & Water Corporation)

Organization chart


【Head office】
2F Nihonbashi Horidome-cho First, 1-2-10 Nihonbashi Horidome-cho, Chuo-ku, Tokyo 103-0012, Japan

【Kagoshima factory (HALVO TRI)】
11675 Uchiyamada, Kaseda, Minami-Satsuma, Kagoshima 897-0004, Japan