A Water-Regenerating
Handwashing Stand
With WOTA’s proprietary technology—
built on years of working with water—
we’ve made it possible to
wash your hands anywhere,
in a way that’s gentle on people
and the planet.
features
A water-regenerating
handwashing stand that’s gentle
on people and the planet.
WOSH regenerates up to 98% of the water used—right on the spot—
so it can be easily installed even in places without access to running water.
That’s the water-regenerating handwashing stand, “WOSH.”
Enjoy the soft, skin-friendly feel of soft water, and a smartphone sanitizing feature.
Peace of mind, made more comfortable.
WOSH delivers a handwashing experience unlike anything before.
* The water recovery rate and the number of people who can use the unit may vary depending
on factors such as the level of soiling and the source water.
To maintain water circulation, periodic maintenance is required,
such as cleaning the shower equipment after a certain number of uses and replacing the unit’s filters.
-
SUSTAINABILITY
Less water, for more people.
Cuts water use by 98%.Used water is regenerated and recirculated on site.
With just 20 liters, WOSH enables up to 500 handwashes.
By reducing wastewater, WOSH is a handwashing stand designed
with the future of the planet in mind. -
CORE TECHNOLOGY
Proprietary water-treatment and
control technology ensures compliance
with stringent water-quality standards.A combination of three filters removes viruses and impurities.
In addition, sensors monitor water quality and other conditions,
and an algorithm autonomously controls system operation to maintain safe water quality. -
SUPPORT YOUR HABITS
A ring of light helps
you wash your hands properly.As you begin washing, a beautiful ring of light appears
and intuitively counts down the recommended 30 seconds.
Over time, it helps proper hygiene habits become second nature. -
INSTALL ANYWHERE
All you need is a power source—
you can install it almost anywhere.No water mains, sewer connection, or construction is required.
Just fill WOSH with water and plug it in, and setup is complete.
Ongoing operation requires only periodic replacement of consumables such as filters. -
STERILIZE YOUR SMARTPHONE
Keep not only your hands,
but your smartphone clean too.Sanitizes 99.9% in just 30 seconds.
Your phone is automatically sanitized while you wash your hands.
Deep ultraviolet (UV-C) light sanitizes even hard-to-reach areas. -
GENTLE CLEANING
A uniquely gentle wash—
thanks to soft water.WOSH uses fine, soft water with a smooth feel.
It’s gentle on the skin and absorbs quickly,
and many customers comment that “the water feels soft.”
Use Cases
WOSH’s design—upcycled from a drum can—blends surprisingly well into its surroundings.
From restaurants and retail stores to children’s play areas,
and from offices to medical settings,
WOSH helps create spaces where people can spend time with confidence and peace of mind.
Normal
times
Shopping Malls
& Department StoresWelcome customers with a thoughtful handwashing station at the entrance—
helping them enjoy shopping in comfort and with peace of mind.
Restaurants & Food Courts
By washing away dirt and germs with soap before
and after eating, diners can enjoy their meals in a cleaner,
more comfortable environment.
Kids’ Areas & Amusement Parks
No need to take children to the restroom just to wash up.
At the facility entrance, families can enjoy handwashing together—
almost like play—offering a fun, experience-based service.
Offices, Logistics Centers & Factories
Install handwashing stands directly at worksites where hands get dirty easily,
and create a cleaner, more comfortable, and more hygienic workplace.
Medical & Care Facilities
For older patients, residents, and visitors whose hands can become
irritated by alcohol sanitizers—and for staff whose hands have become
rough from daily alcohol use—WOSH enables comfortable,
thorough hand hygiene.
emergency
Handwashing support
during disastersWith 20 liters of water, the system can provide roughly 500 hand washes.
During the 2024 Noto Peninsula Earthquake,
about 200 units were deployed to six cities and towns in Ishikawa Prefecture
where water outages lasted for an extended period
(Suzu, Wajima, Noto, Anamizu, Shika, and Nanao).
They were used not only in evacuation shelters,
but also in hospitals, nursing homes, and other facilities
where maintaining hygiene was especially critical.
technology
WOSH removes impurities—including bacteria and viruses—from water using two activated carbon filters and one reverse osmosis (RO) membrane filter. It then disinfects the water via deep ultraviolet (DUV) irradiation and the addition of a chlorine-based disinfectant, eliminating 99.9999% or more of bacteria and viruses.
In addition, WOSH features an autonomous water treatment control system that combines multiple proprietary built-in sensors with AI. By continuously monitoring and controlling water quality and system status, it immediately notifies users if maintenance is required or if any issues arise.
With these technologies, WOSH complies with the WHO Guidelines for Drinking-water Quality and supplies safe, clean water. You can view the results of third-party testing below.
The built-in sensors and AI also enable users to visualize WOSH’s operating status and the number of hand washes on a device. By making handwashing—previously tracked only at the individual level—visible at the level of a facility/space or even an entire city, WOSH brings a new level of insight to public health.
faq
About the Product
Can WOSH be installed outdoors?
WOSH can be installed in a semi-outdoor location as long as it is under a roof and protected from rain.
Is the regenerated water safe?
Are there any third-party test results?Yes. Safety is assured. We commissioned a third-party laboratory to test the water against the 51 water quality parameters defined under Japan’s Water Supply Act, and the test results are available here.
If the system uses recirculated water,
are viruses and bacteria (including COVID-19) removed?Yes. Viruses and bacteria are removed. Please see here for details.
How clean do hands get?
It is said that scrubbing for 10 seconds and rinsing under running water for 15 seconds achieves a 99–99.9% reduction in germs.
Can I drink the water? Can I use it for gargling?
Please refrain from using the water for gargling or drinking.
Even if a small amount accidentally enters your mouth, it is not a safety concern; however, because this product is designed for water reuse, it is not intended for drinking purposes.Is there anything I should not pour into it?
WOSH is for handwashing only. If wastewater generated from anything other than handwashing is discharged into the unit, it may compromise water safety or lead to filter or pump failure, requiring repairs.
Examples of items that must not be discharged:
Oil; alcoholic beverages; leftover coffee/tea/juice and other drinks; seawater; cleaning agents other than neutral detergents (e.g., mold/mildew removers); paints/organic solvents; dyes and dyeing auxiliaries and other dyeing materials; sewage/dirty water; discharging feces or other waste; spitting phlegm into the sink; blowing your nose; vomit; leftover designated handwashing soap or chlorine tablets; any soap other than the designated soap.How much does the unit weigh?
WOSH weighs approximately 80 kg when drained and approximately 100 kg when full. It is equipped with lockable casters at the bottom, so one person can move it easily.
Other
Is delivery limited to Japan?
Currently, only domestic delivery is available.
I haven’t received a reply to my inquiry.
We apologize for the inconvenience. Depending on the nature and status of your inquiry, it may take a few days for us to respond. If you do not hear from us within one week, or if your inquiry is urgent, we kindly ask that you contact us again.