• WOTA BOX
  • WOTA BOX
  • WOTA BOX
  • WOTA BOX
  • WOTA BOX

Make life more free
than before.

WOTA BOX is a portable
water recycling system
that enables water use even
with no water supply.
Optional units expand its functionality
for showering or hand washing
in the middle of nature or after disasters.
Approximately 98%* of wastewater
is reused for reuse,
delivering safe and reliable water
anytime, anywhere.
WOTA BOX is built with
WOTA’s unique technology,
distilled from years of
research and development.

features

ANYTIME, ANYWHERE

A portable water recycling
system designed
for rapid deployment anywhere

In evacuation shelters, temporary housing, or welfare facilities where water supply has been
cut off by large-scale disasters, the WOTA BOX can be transported to the required location
and set up to provide a fully functioning shower facilities on the spot.
Powered by cutting-edge autonomous water treatment control, it regenerates
and recirculates used water on site, offering a solution that is gentle on both people and the environment.
A portable water recycling system that can be deployed “whenever and wherever it’s needed.”

*The regeneration rate and number of users may vary depending on the operating environment and how the water is used.
To maintain water circulation, regular maintenance such as cleaning the shower equipment and replacing the system’s filters is required after a certain number of uses.

scene

For disaster preparedness—and for comfort at events.
No connection to a water supply is required;
you can use clean water freely anytime, anywhere

Normal
times

  • Marine activities /
    Water use at event venues

    By connecting the shower kit to the main unit,
    this water-recirculating system allows approximately 100 people
    to shower with just 100 liters of water.
    It has a proven track record of versatile use at various events,
    including sports events such as marathons, outdoor events with overnight stays,
    and disaster-preparedness drills.
    It has also been utilized as part of health and safety measures—
    for example, to help prevent heatstroke during events.

    Marine activities / <br>Water use at event venues

emergency

  • Emergency shelters /
    Bathing support during disasters

    Two adults can assemble the unit in about 15 minutes.
    Because it is easy to carry and can be transported in a standard minivan or similar vehicle,
    as long as you have 100 liters of initial initial water,
    you can deploy and use it where and when it is needed
    in the event of a disaster such as an earthquake or storm/flood damage.

    During the 2024 Noto Peninsula Earthquake (Reiwa 6), around 100 units were deployed
    to six municipalities in Ishikawa Prefecture
    where the water outage lasted for an extended period
    (Suzu City, Wajima City, Noto Town, Anamizu Town, Shika Town, and Nanao City).

    Since the shower kit consists of private, individual stalls,
    it can be used relatively easily even by people requiring special care in disasters
    (such as older adults, persons with disabilities, infants, and pregnant or postpartum women).

    Emergency shelters / <br class="visible-pc">Bathing support during disasters

outdoor shower kit Expansion Unit

Portable and ready in 15 minutes
A portable shower kit
that can be set up in about 15 minutes

The Outdoor Shower Kit is an easy-to-use package that includes everything needed to provide showers in emergencies and other disaster situations.
It prioritizes cleanliness and privacy, and uses a tent-style design that is easy to carry
and store for rapid deployment.
At evacuation shelters and other disaster sites, simply connect it to the WOTA BOX,
and anyone can start using it right away.

*Images are for illustrative purposes only. Actual product design and specifications may vary.

technology

WOTA BOX removes impurities, bacteria, and viruses through filtration using a total of six filters (activated carbon and RO membrane filtration).
It then applies deep-UV irradiation and doses a chlorine-based disinfectant, achieving at least 99.9999% disinfection of bacteria and viruses.

In addition, WOTA CORE—an autonomous water-treatment control system that combines multiple proprietary embedded sensors with AI—continuously monitors and controls both water quality and system operation, and immediately notifies users if maintenance is required or a problem occurs.

These technologies enable WOTA BOX to maintain purified water that conforms to Japan’s public bath water-quality standards (for water used after bathing), in accordance with the “Guidelines on Water Quality Standards, etc. in Public Baths” (Notification Seiei-hatsu No. 1811, dated December 15, 2000, issued by the Director-General of the Environmental Health Bureau, Ministry of Health and Welfare).

information

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faq

About the Product

  • Can it be used with freshwater sources other than tap water?

    Yes, it can be used with freshwater sources such as swimming pool water,
    fire cistern water, rainwater, or river water.
    However, it cannot be used if the water contains dissolved poisons,
    hazardous substances, or similar contaminants. When using non-tap water, pre-purification is required before use.
    It is not compatible with turbid (cloudy or muddy) water.

  • Can WOTA BOX use salt water?

    No, salt water cannot be used.

  • What water quality standards does WOTA BOX meet?

    WOTA BOX conforms to the WHO water quality standard for drinking water (“WHO Guidelines for drinking-water quality”).

  • Can I drink the water?

    Water getting into your mouth or eyes in small amounts will not adversely affect your health, but the water is not for drinking.

  • Is there any chlorine in the water?

    Yes, water from WOTA BOX contains chlorine at a concentration similar to a swimming pool. It is added automatically by a device inside WOTA BOX.

  • Can I store WOTA BOX in a place where it might freeze?

    WOTA BOX can be stored at temperatures between -10°C and 60°C,
    but be sure to drain the water before storage.
    Please note that if WOTA BOX freezes without draining the water,
    it will not be covered under warranty.

  • Can I store WOTA BOX outdoors?

    Please store WOTA BOX indoors.

About
the Outdoor Shower Kit

  • Does it take long to set up?

    Two adults can set it up in about 15 minutes.

  • What are the site requirements for setup?

    Please choose a location that meets the following conditions
    (e.g., a shelter parking lot):
    A flat, level surface
    Approximately 4 m × 2 m of space
    A place where some noise is acceptable

  • What power supply and fuel are required for operation?

    WOTA BOX: 100 V AC (50/60 Hz)
    (max. power consumption: 700 W)
    Hot water system: 100 V AC (50/60 Hz)
    (max. power consumption: 135 W)
    + kerosene (5.25 L/hour)

  • Can it be used with batteries or a generator?

    Yes—batteries or generators that meet the above requirements can be used.

  • What is the shower flow rate?

    Approximately 4 L/min. Because it uses a water-saving shower head, it provides a showering feel comparable to a typical household shower.

  • What happens if someone urinates while showering?

    Please refrain from urinating while using the shower. If it happens,
    the WOTA BOX has a built-in safety function: internal sensors detect urine, separate it, and discharge it without purification.

  • Is there anything that must not be done while showering?

    To ensure safe use, do not drain any of the following:
    Oil/grease
    Alcoholic beverages or other alcohol-based liquids
    Hair dye
    Cleaning agents other than neutral detergents (e.g., mold removers)
    Human waste
    Any wastewater generated for purposes other than shower use

    * If any of these are drained, water safety may be compromised, and it may lead to failures such as filter or pump damage, which could require repairs.

Maintenance

  • How often do the filters need to be replaced?

    This depends on how the system is used, but the filter that requires replacement most frequently typically needs to be replaced about once every 50 showers.

  • What is a firmware update?

    The WOTA BOX has an automatic software update function that adds new features and improves existing ones. New software is automatically downloaded to the unit, and when it is ready to be installed, a notification appears on the unit’s LCD panel. Please follow the on-screen instructions to complete the update.

  • Can the shower be used during a firmware update?

    No. The shower cannot be used while the update is in progress.
    The update takes about 30 seconds.

  • Can I continue using the system without installing firmware updates?

    Yes, the system will continue to function. However, updates may include important improvements, so we recommend installing them.

About Purchasing

  • Where can I purchase it?

    Please contact us via the inquiry form.

  • Is shipping limited to within Japan?

    At present, we only handle shipments within Japan.

  • Where can I buy consumables?

    You can purchase genuine consumables through WOTA’s dedicated online store.
    Detailed purchasing instructions will be provided in the manual when you buy the product.

    *Please note that consumables are sold exclusively by our company, so they cannot be purchased elsewhere.
    I haven’t received a reply to my inquiry.
    We apologize for the inconvenience. Depending on the volume and nature of inquiries, it may take several days for us to respond. If you have not heard back after one week, or if your matter is urgent, we respectfully ask that you contact us again.