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Johkasou Points of Excellence

johkasou has many good points.
Taking detached houses as an example, it would look like this:

1. You can set up a flush toilet in a short period of time.

  • A flush toilet makes your life easier. Especially for the elderly, it is useful for health management.
  • There are reports of an increase in the number of urban children returning to their hometowns as a result of switching from drawing water to flushing toilets.
  • The installation work of johkasou will be completed in about one week, so the flush toilet can be used in a short period of time.In addition, if there is space for one passenger car, it can be installed anywhere.
Source: Ministry of the Environment booklet "Johkasou's Initiatives to Improve Local Water Environments"

2. Contribute to the preservation of the local water environment.

  • Contamination derived from domestic wastewater is reduced in 10 parts to less than 1, and clean water can be discharged into familiar waterways.
    In addition to improving the living environment by eliminating sources of odors, mosquitoes and flies, it is also useful for maintaining the water volume of small and medium-sized rivers flowing through the area.   
    For example, in Samukawa Town (now Sanuki City) in Kagawa Prefecture, it is said that sales of mosquito coils have declined as johkasou construction progressed.
  • By cleaning up the water they polluted themselves and returning it to the river, and experiencing the improvement effect up close, it will help raise children's environmental awareness.
  • In areas where countermeasures against blue-green algae and red tide are required, johkasou can be installed to remove nitrogen and phosphorus in addition to BOD.

3. It helps to revitalize the local economy.

  • Contamination derived from domestic wastewater is reduced in 10 parts to less than 1, and clean water can be discharged into familiar waterways.
    In addition to improving the living environment by eliminating sources of odors, mosquitoes and flies, it is also useful for maintaining the water volume of small and medium-sized rivers flowing through the area.   
    For example, in Samukawa Town (now Sanuki City) in Kagawa Prefecture, it is said that sales of mosquito coils have declined as johkasou construction progressed.
  • Local companies can be entrusted with everything from installation work to maintenance and management, which leads to the revitalization of the local economy, including the creation of employment.
  • It is easy to make business plans according to the financial situation of municipalities. We will set up johkasou according to the wishes of the residents, so the participation rate is 100%. In addition, since it is possible to respond flexibly to changes in the population and the number of households, the impact on municipal finances is small.

4. Long lasting and earthquake resistant.

  • The johkasou, which is produced in advance at the factory, has excellent strength and durability even though it is small, and has a track record of over 30 years of operation since the start of use.  
    For example, in Samukawa Town (now Sanuki City) in Kagawa Prefecture, it is said that sales of mosquito coils have declined as johkasou construction progressed.
  • It is said to be an earthquake-resistant facility.For example, even if the water supply cannot be used in the event of an earthquake, the function of the toilet will be ensured as long as the tank itself is not damaged.
    The Ministry of the Environment has been promoting the development of johkasou facilities that will serve as evacuation shelters in the event of a disaster, starting with the Heisei 20 2nd revision.

5. For those who are considering installing

  • The installation work (including the main unit cost) costs about 840,000 yen (5 people tank), but various subsidies and
    since there is a capital system, the burden on individuals will be lighter. For details, contact your municipality
    Please contact us.

Travel Tips

  • Highly effective in water conservation.According to the "BOD measurement results of the Heisei 19 article 11 (approximately 590,000 units surveyed)" announced by the Ministry of the Environment, facilities that have BOD of 5 mg / L or less and water quality recommended for carp and crucian carp, accounting for about 40% of the total.
Public interest incorporated foundation
Japan Education Center of Environmental Sanitation
130-0024
2-23-3 Kikukawa, Sumida-ku, Tokyo
TEL: 03-3635-4880 (Switchboard),


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