Remove every limitation
between people and water.

Human history is the history of our relationship with water.
Water gave rise to civilizations.
Water has nourished people's livelihoods.
But that means humans need a river or water supply in order to survive.
At WOTA, we want to remove every limitation from people's relationship with water.
By integrating small water systems into the big water infrastructure of the past,
we can achieve a more creative and sustainable way of life.
That is our belief.
In cities and deserts, remote islands and outer space.
We imagine a future where water is more freely available to all people.
Our work will always continue.



WOTA BOX is a portable recycled water treatment plant.
Access water even where there is no water supply.
Safely use water anytime and anywhere,
during disasters or in the wilderness,
by reusing 98% of waste water
from showers, handwashing, and laundry.
Built with WOTA's unique technology,
developed through our intense focus on water.

Learn more


WOSH is an entirely new handwash stand.
Set it up in places without a water supply.
In cafes, restaurants, offices, or on the street.
Refresh anytime, anywhere.
Provide safety and peace of mind for everyone.
Built with WOTA's unique technology,
developed through our intense focus on water.

Learn more


At WOTA, we are looking for new colleagues to achieve our vision together.
Our employees come from a variety of backgrounds, including foreign consulting companies, government ministries, research institutes, and advertising agencies. We look forward to applications from people who share our vision outlined in the article below.

B2B Sales

Finance Officer

Corporate Planning Officer

Legal and Certification Officer

Mechanical Design Engineer

Electrical Circuit Engineer

Embedded Engineer

Water Treatment Engineer

Product Designer

UX/UI Designer

Quality Control Officer

Field/Service Engineer

Data Scientist

Software Engineer

Software Manager

Open Position

Engineering Interns

About us

  • Company Name(Japanese)


  • Company Name(English)


  • Location

    4−12−5, Hongo, Bunkyo-ku, Tokyo

  • Founded

    24 October 2014

  • CEO

    Yosuke Maeda

  • Main Financing Banks

    Mizuho Bank, Tokyo Chuo Branch
    Sumitomo Mitsui Banking Corporation, Shinjuku West Exit Branch

  • Business Content

    Manufacture and development of water treatment equipment
    Algorithm development

  • Joint Research Partners

    University of Tokyo,Kobe University,Japan Aerospace Exploration Agency


For questions or consultation,
please contact us here.


For inquiries about media or interviews,
please contact us here.