Awesome Japanese Techniques That Conserve Water and Save Time

Adapted from

Japan has regular earthquakes, landslides, volcanic eruptions, and tsunamis that cause mass destruction. Such disasters have made the Japanese thoughtfully focus on conservation of natural resources so that they can be prepared for whatever comes. That is more than just a personal decision, it is moral responsibility to community. Over-consumption would take away what someone else might need, now or in an uncertain future. This applies to water. Even though Japan’s islands are surrounded by water and there is adequate rainfall, Japan’s high population density makes clean water a commodity to use wisely.

When it comes to countries with the latest technology, Japan immediately comes to mind. In their homes, Japanese people have built an efficient system for bathrooms that has multipurpose gadgets and innovations that help conserving water and time.

1. A Smart way to reuse the bathtub water

Bathtubs require a lot of water and water is one thing that shouldn’t be wasted. Now, you would not want to bathe in the warm bubble water that also includes your own filth and dirt. So just clean yourself up with a water spray before taking a long comfortable bath. You can also put a water disinfectant in the tub. This way the water in the tub will stay clean and it could be used by another person.

2. Re-Use the Bathtub Water for Laundry

As the water in the bathtub is still clean, it can be re-used to do laundry. People attach a tube that sucks the water from the bathtub into the washing machine. Brilliant isn’t it??

3. Save Time, Japanese Style

The bathrooms in Japan are built in such a manner that it can be used by three people for different purposes simultaneously. There are separate spaces in the bathroom to take bath, a sink and mirror for general purposes, and a separate toilet with its own sink. The people have amazing architectural sense that allowed them a maximum utilization of their space and save time.

4.  Control Panel and Security System

A control panel to set the right bathwater temperature is fixed both in the bathroom and the kitchen. Baths before bedtime can be prepared by the person cleaning up the supper dishes. The water heaters are small on-demand heaters under the sink and bathtub. No need to maintain temperature all day in a big hot water tank, or to have heat dissipate as the hot water is piped through the building. The control panel also comes with an emergency call button and a regular call button to contact maintenance, if you live in an apartment building.


Look at the bathroom fixture diagram above.

How is it different from the toilet and hand washing sink in Aiko’s apartment in the “Life Where I’m From” video?


How does it conserve water?


Could plumbing like this work here?


Refer to the “Life Where I’m From” video on doing the laundry. How was greywater reused?


Why would it be important to have the toilet, bathing room, and multi-use sink in separate little rooms in a family apartment?


Creating these separate little rooms saves time and water. Compared to your home, is there something else the Japanese family is probably using less of?


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